Michael Chan [Tue, 23 Jun 2020 23:01:37 +0000 (19:01 -0400)]
bnxt_en: Fix statistics counters issue during ifdown with older firmware.
[ Upstream commit
c2dec363feb41544a76c8083aca2378990e17166 ]
On older firmware, the hardware statistics are not cleared when the
driver frees the hardware stats contexts during ifdown. The driver
expects these stats to be cleared and saves a copy before freeing
the stats contexts. During the next ifup, the driver will likely
allocate the same hardware stats contexts and this will cause a big
increase in the counters as the old counters are added back to the
saved counters.
We fix it by making an additional firmware call to clear the counters
before freeing the hw stats contexts when the firmware is the older
20.x firmware.
Fixes: b8875ca356f1 ("bnxt_en: Save ring statistics before reset.")
Reported-by: Jakub Kicinski <kicinski@fb.com>
Reviewed-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Tested-by: Jakub Kicinski <kicinski@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michael Chan [Tue, 23 Jun 2020 23:01:36 +0000 (19:01 -0400)]
bnxt_en: Do not enable legacy TX push on older firmware.
[ Upstream commit
fed7edd18143c68c63ea049999a7e861123de6de ]
Older firmware may not support legacy TX push properly and may not
be disabling it. So we check certain firmware versions that may
have this problem and disable legacy TX push unconditionally.
Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michael Chan [Tue, 23 Jun 2020 23:01:35 +0000 (19:01 -0400)]
bnxt_en: Store the running firmware version code.
[ Upstream commit
d0ad2ea2bc185835f8a749302ad07b70528d2a09 ]
We currently only store the firmware version as a string for ethtool
and devlink info. Store it also as a version code. The next 2
patches will need to check the firmware major version to determine
some workarounds.
We also use the 16-bit firmware version fields if the firmware is newer
and provides the 16-bit fields.
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Taehee Yoo [Tue, 16 Jun 2020 16:51:51 +0000 (16:51 +0000)]
ip_tunnel: fix use-after-free in ip_tunnel_lookup()
[ Upstream commit
ba61539c6ae57f4146284a5cb4f7b7ed8d42bf45 ]
In the datapath, the ip_tunnel_lookup() is used and it internally uses
fallback tunnel device pointer, which is fb_tunnel_dev.
This pointer variable should be set to NULL when a fb interface is deleted.
But there is no routine to set fb_tunnel_dev pointer to NULL.
So, this pointer will be still used after interface is deleted and
it eventually results in the use-after-free problem.
Test commands:
ip netns add A
ip netns add B
ip link add eth0 type veth peer name eth1
ip link set eth0 netns A
ip link set eth1 netns B
ip netns exec A ip link set lo up
ip netns exec A ip link set eth0 up
ip netns exec A ip link add gre1 type gre local 10.0.0.1 \
remote 10.0.0.2
ip netns exec A ip link set gre1 up
ip netns exec A ip a a 10.0.100.1/24 dev gre1
ip netns exec A ip a a 10.0.0.1/24 dev eth0
ip netns exec B ip link set lo up
ip netns exec B ip link set eth1 up
ip netns exec B ip link add gre1 type gre local 10.0.0.2 \
remote 10.0.0.1
ip netns exec B ip link set gre1 up
ip netns exec B ip a a 10.0.100.2/24 dev gre1
ip netns exec B ip a a 10.0.0.2/24 dev eth1
ip netns exec A hping3 10.0.100.2 -2 --flood -d 60000 &
ip netns del B
Splat looks like:
[ 77.793450][ C3] ==================================================================
[ 77.794702][ C3] BUG: KASAN: use-after-free in ip_tunnel_lookup+0xcc4/0xf30
[ 77.795573][ C3] Read of size 4 at addr
ffff888060bd9c84 by task hping3/2905
[ 77.796398][ C3]
[ 77.796664][ C3] CPU: 3 PID: 2905 Comm: hping3 Not tainted 5.8.0-rc1+ #616
[ 77.797474][ C3] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 77.798453][ C3] Call Trace:
[ 77.798815][ C3] <IRQ>
[ 77.799142][ C3] dump_stack+0x9d/0xdb
[ 77.799605][ C3] print_address_description.constprop.7+0x2cc/0x450
[ 77.800365][ C3] ? ip_tunnel_lookup+0xcc4/0xf30
[ 77.800908][ C3] ? ip_tunnel_lookup+0xcc4/0xf30
[ 77.801517][ C3] ? ip_tunnel_lookup+0xcc4/0xf30
[ 77.802145][ C3] kasan_report+0x154/0x190
[ 77.802821][ C3] ? ip_tunnel_lookup+0xcc4/0xf30
[ 77.803503][ C3] ip_tunnel_lookup+0xcc4/0xf30
[ 77.804165][ C3] __ipgre_rcv+0x1ab/0xaa0 [ip_gre]
[ 77.804862][ C3] ? rcu_read_lock_sched_held+0xc0/0xc0
[ 77.805621][ C3] gre_rcv+0x304/0x1910 [ip_gre]
[ 77.806293][ C3] ? lock_acquire+0x1a9/0x870
[ 77.806925][ C3] ? gre_rcv+0xfe/0x354 [gre]
[ 77.807559][ C3] ? erspan_xmit+0x2e60/0x2e60 [ip_gre]
[ 77.808305][ C3] ? rcu_read_lock_sched_held+0xc0/0xc0
[ 77.809032][ C3] ? rcu_read_lock_held+0x90/0xa0
[ 77.809713][ C3] gre_rcv+0x1b8/0x354 [gre]
[ ... ]
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: c54419321455 ("GRE: Refactor GRE tunneling code.")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Florian Fainelli [Fri, 19 Jun 2020 18:47:47 +0000 (11:47 -0700)]
net: phy: Check harder for errors in get_phy_id()
[ Upstream commit
b2ffc75e2e990b09903f9d15ccd53bc5f3a4217c ]
Commit
02a6efcab675 ("net: phy: allow scanning busses with missing
phys") added a special condition to return -ENODEV in case -ENODEV or
-EIO was returned from the first read of the MII_PHYSID1 register.
In case the MDIO bus data line pull-up is not strong enough, the MDIO
bus controller will not flag this as a read error. This can happen when
a pluggable daughter card is not connected and weak internal pull-ups
are used (since that is the only option, otherwise the pins are
floating).
The second read of MII_PHYSID2 will be correctly flagged an error
though, but now we will return -EIO which will be treated as a hard
error, thus preventing MDIO bus scanning loops to continue succesfully.
Apply the same logic to both register reads, thus allowing the scanning
logic to proceed.
Fixes: 02a6efcab675 ("net: phy: allow scanning busses with missing phys")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Taehee Yoo [Tue, 16 Jun 2020 16:04:00 +0000 (16:04 +0000)]
ip6_gre: fix use-after-free in ip6gre_tunnel_lookup()
[ Upstream commit
dafabb6590cb15f300b77c095d50312e2c7c8e0f ]
In the datapath, the ip6gre_tunnel_lookup() is used and it internally uses
fallback tunnel device pointer, which is fb_tunnel_dev.
This pointer variable should be set to NULL when a fb interface is deleted.
But there is no routine to set fb_tunnel_dev pointer to NULL.
So, this pointer will be still used after interface is deleted and
it eventually results in the use-after-free problem.
Test commands:
ip netns add A
ip netns add B
ip link add eth0 type veth peer name eth1
ip link set eth0 netns A
ip link set eth1 netns B
ip netns exec A ip link set lo up
ip netns exec A ip link set eth0 up
ip netns exec A ip link add ip6gre1 type ip6gre local fc:0::1 \
remote fc:0::2
ip netns exec A ip -6 a a fc:100::1/64 dev ip6gre1
ip netns exec A ip link set ip6gre1 up
ip netns exec A ip -6 a a fc:0::1/64 dev eth0
ip netns exec A ip link set ip6gre0 up
ip netns exec B ip link set lo up
ip netns exec B ip link set eth1 up
ip netns exec B ip link add ip6gre1 type ip6gre local fc:0::2 \
remote fc:0::1
ip netns exec B ip -6 a a fc:100::2/64 dev ip6gre1
ip netns exec B ip link set ip6gre1 up
ip netns exec B ip -6 a a fc:0::2/64 dev eth1
ip netns exec B ip link set ip6gre0 up
ip netns exec A ping fc:100::2 -s 60000 &
ip netns del B
Splat looks like:
[ 73.087285][ C1] BUG: KASAN: use-after-free in ip6gre_tunnel_lookup+0x1064/0x13f0 [ip6_gre]
[ 73.088361][ C1] Read of size 4 at addr
ffff888040559218 by task ping/1429
[ 73.089317][ C1]
[ 73.089638][ C1] CPU: 1 PID: 1429 Comm: ping Not tainted 5.7.0+ #602
[ 73.090531][ C1] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 73.091725][ C1] Call Trace:
[ 73.092160][ C1] <IRQ>
[ 73.092556][ C1] dump_stack+0x96/0xdb
[ 73.093122][ C1] print_address_description.constprop.6+0x2cc/0x450
[ 73.094016][ C1] ? ip6gre_tunnel_lookup+0x1064/0x13f0 [ip6_gre]
[ 73.094894][ C1] ? ip6gre_tunnel_lookup+0x1064/0x13f0 [ip6_gre]
[ 73.095767][ C1] ? ip6gre_tunnel_lookup+0x1064/0x13f0 [ip6_gre]
[ 73.096619][ C1] kasan_report+0x154/0x190
[ 73.097209][ C1] ? ip6gre_tunnel_lookup+0x1064/0x13f0 [ip6_gre]
[ 73.097989][ C1] ip6gre_tunnel_lookup+0x1064/0x13f0 [ip6_gre]
[ 73.098750][ C1] ? gre_del_protocol+0x60/0x60 [gre]
[ 73.099500][ C1] gre_rcv+0x1c5/0x1450 [ip6_gre]
[ 73.100199][ C1] ? ip6gre_header+0xf00/0xf00 [ip6_gre]
[ 73.100985][ C1] ? rcu_read_lock_sched_held+0xc0/0xc0
[ 73.101830][ C1] ? ip6_input_finish+0x5/0xf0
[ 73.102483][ C1] ip6_protocol_deliver_rcu+0xcbb/0x1510
[ 73.103296][ C1] ip6_input_finish+0x5b/0xf0
[ 73.103920][ C1] ip6_input+0xcd/0x2c0
[ 73.104473][ C1] ? ip6_input_finish+0xf0/0xf0
[ 73.105115][ C1] ? rcu_read_lock_held+0x90/0xa0
[ 73.105783][ C1] ? rcu_read_lock_sched_held+0xc0/0xc0
[ 73.106548][ C1] ipv6_rcv+0x1f1/0x300
[ ... ]
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Christensen [Wed, 17 Jun 2020 18:51:17 +0000 (11:51 -0700)]
tg3: driver sleeps indefinitely when EEH errors exceed eeh_max_freezes
[ Upstream commit
3a2656a211caf35e56afc9425e6e518fa52f7fbc ]
The driver function tg3_io_error_detected() calls napi_disable twice,
without an intervening napi_enable, when the number of EEH errors exceeds
eeh_max_freezes, resulting in an indefinite sleep while holding rtnl_lock.
Add check for pcierr_recovery which skips code already executed for the
"Frozen" state.
Signed-off-by: David Christensen <drc@linux.vnet.ibm.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Dumazet [Tue, 16 Jun 2020 03:37:07 +0000 (20:37 -0700)]
tcp: grow window for OOO packets only for SACK flows
[ Upstream commit
662051215c758ae8545451628816204ed6cd372d ]
Back in 2013, we made a change that broke fast retransmit
for non SACK flows.
Indeed, for these flows, a sender needs to receive three duplicate
ACK before starting fast retransmit. Sending ACK with different
receive window do not count.
Even if enabling SACK is strongly recommended these days,
there still are some cases where it has to be disabled.
Not increasing the window seems better than having to
rely on RTO.
After the fix, following packetdrill test gives :
// Initialize connection
0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0
+0 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
+0 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 8>
+0 < . 1:1(0) ack 1 win 514
+0 accept(3, ..., ...) = 4
+0 < . 1:1001(1000) ack 1 win 514
// Quick ack
+0 > . 1:1(0) ack 1001 win 264
+0 < . 2001:3001(1000) ack 1 win 514
// DUPACK : Normally we should not change the window
+0 > . 1:1(0) ack 1001 win 264
+0 < . 3001:4001(1000) ack 1 win 514
// DUPACK : Normally we should not change the window
+0 > . 1:1(0) ack 1001 win 264
+0 < . 4001:5001(1000) ack 1 win 514
// DUPACK : Normally we should not change the window
+0 > . 1:1(0) ack 1001 win 264
+0 < . 1001:2001(1000) ack 1 win 514
// Hole is repaired.
+0 > . 1:1(0) ack 5001 win 272
Fixes: 4e4f1fc22681 ("tcp: properly increase rcv_ssthresh for ofo packets")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Denis Kirjanov [Thu, 25 Jun 2020 11:51:06 +0000 (14:51 +0300)]
tcp: don't ignore ECN CWR on pure ACK
[ Upstream commit
2570284060b48f3f79d8f1a2698792f36c385e9a ]
there is a problem with the CWR flag set in an incoming ACK segment
and it leads to the situation when the ECE flag is latched forever
the following packetdrill script shows what happens:
// Stack receives incoming segments with CE set
+0.1 <[ect0] . 11001:12001(1000) ack 1001 win 65535
+0.0 <[ce] . 12001:13001(1000) ack 1001 win 65535
+0.0 <[ect0] P. 13001:14001(1000) ack 1001 win 65535
// Stack repsonds with ECN ECHO
+0.0 >[noecn] . 1001:1001(0) ack 12001
+0.0 >[noecn] E. 1001:1001(0) ack 13001
+0.0 >[noecn] E. 1001:1001(0) ack 14001
// Write a packet
+0.1 write(3, ..., 1000) = 1000
+0.0 >[ect0] PE. 1001:2001(1000) ack 14001
// Pure ACK received
+0.01 <[noecn] W. 14001:14001(0) ack 2001 win 65535
// Since CWR was sent, this packet should NOT have ECE set
+0.1 write(3, ..., 1000) = 1000
+0.0 >[ect0] P. 2001:3001(1000) ack 14001
// but Linux will still keep ECE latched here, with packetdrill
// flagging a missing ECE flag, expecting
// >[ect0] PE. 2001:3001(1000) ack 14001
// in the script
In the situation above we will continue to send ECN ECHO packets
and trigger the peer to reduce the congestion window. To avoid that
we can check CWR on pure ACKs received.
v3:
- Add a sequence check to avoid sending an ACK to an ACK
v2:
- Adjusted the comment
- move CWR check before checking for unacknowledged packets
Signed-off-by: Denis Kirjanov <denis.kirjanov@suse.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Marcelo Ricardo Leitner [Wed, 24 Jun 2020 20:34:18 +0000 (17:34 -0300)]
sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket
[ Upstream commit
471e39df96b9a4c4ba88a2da9e25a126624d7a9c ]
If a socket is set ipv6only, it will still send IPv4 addresses in the
INIT and INIT_ACK packets. This potentially misleads the peer into using
them, which then would cause association termination.
The fix is to not add IPv4 addresses to ipv6only sockets.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Tested-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Howells [Fri, 19 Jun 2020 22:38:16 +0000 (23:38 +0100)]
rxrpc: Fix notification call on completion of discarded calls
[ Upstream commit
0041cd5a50442db6e456b145892a0eaf2dff061f ]
When preallocated service calls are being discarded, they're passed to
->discard_new_call() to have the caller clean up any attached higher-layer
preallocated pieces before being marked completed. However, the act of
marking them completed now invokes the call's notification function - which
causes a problem because that function might assume that the previously
freed pieces of memory are still there.
Fix this by setting a dummy notification function on the socket after
calling ->discard_new_call().
This results in the following kasan message when the kafs module is
removed.
==================================================================
BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 fs/afs/rxrpc.c:707
Write of size 1 at addr
ffff8880946c39e4 by task kworker/u4:1/21
CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x18f/0x20d lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xd3/0x413 mm/kasan/report.c:383
__kasan_report mm/kasan/report.c:513 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
afs_wake_up_async_call+0x6aa/0x770 fs/afs/rxrpc.c:707
rxrpc_notify_socket+0x1db/0x5d0 net/rxrpc/recvmsg.c:40
__rxrpc_set_call_completion.part.0+0x172/0x410 net/rxrpc/recvmsg.c:76
__rxrpc_call_completed net/rxrpc/recvmsg.c:112 [inline]
rxrpc_call_completed+0xca/0xf0 net/rxrpc/recvmsg.c:111
rxrpc_discard_prealloc+0x781/0xab0 net/rxrpc/call_accept.c:233
rxrpc_listen+0x147/0x360 net/rxrpc/af_rxrpc.c:245
afs_close_socket+0x95/0x320 fs/afs/rxrpc.c:110
afs_net_exit+0x1bc/0x310 fs/afs/main.c:155
ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:186
cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
process_one_work+0x965/0x1690 kernel/workqueue.c:2269
worker_thread+0x96/0xe10 kernel/workqueue.c:2415
kthread+0x3b5/0x4a0 kernel/kthread.c:291
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Allocated by task 6820:
save_stack+0x1b/0x40 mm/kasan/common.c:48
set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc mm/kasan/common.c:494 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
kmem_cache_alloc_trace+0x153/0x7d0 mm/slab.c:3551
kmalloc include/linux/slab.h:555 [inline]
kzalloc include/linux/slab.h:669 [inline]
afs_alloc_call+0x55/0x630 fs/afs/rxrpc.c:141
afs_charge_preallocation+0xe9/0x2d0 fs/afs/rxrpc.c:757
afs_open_socket+0x292/0x360 fs/afs/rxrpc.c:92
afs_net_init+0xa6c/0xe30 fs/afs/main.c:125
ops_init+0xaf/0x420 net/core/net_namespace.c:151
setup_net+0x2de/0x860 net/core/net_namespace.c:341
copy_net_ns+0x293/0x590 net/core/net_namespace.c:482
create_new_namespaces+0x3fb/0xb30 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:231
ksys_unshare+0x43d/0x8e0 kernel/fork.c:2983
__do_sys_unshare kernel/fork.c:3051 [inline]
__se_sys_unshare kernel/fork.c:3049 [inline]
__x64_sys_unshare+0x2d/0x40 kernel/fork.c:3049
do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 21:
save_stack+0x1b/0x40 mm/kasan/common.c:48
set_track mm/kasan/common.c:56 [inline]
kasan_set_free_info mm/kasan/common.c:316 [inline]
__kasan_slab_free+0xf7/0x140 mm/kasan/common.c:455
__cache_free mm/slab.c:3426 [inline]
kfree+0x109/0x2b0 mm/slab.c:3757
afs_put_call+0x585/0xa40 fs/afs/rxrpc.c:190
rxrpc_discard_prealloc+0x764/0xab0 net/rxrpc/call_accept.c:230
rxrpc_listen+0x147/0x360 net/rxrpc/af_rxrpc.c:245
afs_close_socket+0x95/0x320 fs/afs/rxrpc.c:110
afs_net_exit+0x1bc/0x310 fs/afs/main.c:155
ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:186
cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
process_one_work+0x965/0x1690 kernel/workqueue.c:2269
worker_thread+0x96/0xe10 kernel/workqueue.c:2415
kthread+0x3b5/0x4a0 kernel/kthread.c:291
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
The buggy address belongs to the object at
ffff8880946c3800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 484 bytes inside of
1024-byte region [
ffff8880946c3800,
ffff8880946c3c00)
The buggy address belongs to the page:
page:
ffffea000251b0c0 refcount:1 mapcount:0 mapping:
0000000000000000 index:0x0
flags: 0xfffe0000000200(slab)
raw:
00fffe0000000200 ffffea0002546508 ffffea00024fa248 ffff8880aa000c40
raw:
0000000000000000 ffff8880946c3000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880946c3880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880946c3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>
ffff8880946c3980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880946c3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880946c3a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Reported-by: syzbot+d3eccef36ddbd02713e9@syzkaller.appspotmail.com
Fixes: 5ac0d62226a0 ("rxrpc: Fix missing notification")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Aditya Pakki [Fri, 12 Jun 2020 20:27:55 +0000 (15:27 -0500)]
rocker: fix incorrect error handling in dma_rings_init
[ Upstream commit
58d0c864e1a759a15c9df78f50ea5a5c32b3989e ]
In rocker_dma_rings_init, the goto blocks in case of errors
caused by the functions rocker_dma_cmd_ring_waits_alloc() and
rocker_dma_ring_create() are incorrect. The patch fixes the
order consistent with cleanup in rocker_dma_rings_fini().
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lorenzo Bianconi [Tue, 23 Jun 2020 16:33:15 +0000 (18:33 +0200)]
openvswitch: take into account de-fragmentation/gso_size in execute_check_pkt_len
[ Upstream commit
17843655708e1941c0653af3cd61be6948e36f43 ]
ovs connection tracking module performs de-fragmentation on incoming
fragmented traffic. Take info account if traffic has been de-fragmented
in execute_check_pkt_len action otherwise we will perform the wrong
nested action considering the original packet size. This issue typically
occurs if ovs-vswitchd adds a rule in the pipeline that requires connection
tracking (e.g. OVN stateful ACLs) before execute_check_pkt_len action.
Moreover take into account GSO fragment size for GSO packet in
execute_check_pkt_len routine
Fixes: 4d5ec89fc8d14 ("net: openvswitch: Add a new action check_pkt_len")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jeremy Kerr [Mon, 15 Jun 2020 02:54:56 +0000 (10:54 +0800)]
net: usb: ax88179_178a: fix packet alignment padding
[ Upstream commit
e869e7a17798d85829fa7d4f9bbe1eebd4b2d3f6 ]
Using a AX88179 device (0b95:1790), I see two bytes of appended data on
every RX packet. For example, this 48-byte ping, using 0xff as a
payload byte:
04:20:22.528472 IP 192.168.1.1 > 192.168.1.2: ICMP echo request, id 2447, seq 1, length 64
0x0000: 000a cd35 ea50 000a cd35 ea4f 0800 4500
0x0010: 0054 c116 4000 4001 f63e c0a8 0101 c0a8
0x0020: 0102 0800 b633 098f 0001 87ea cd5e 0000
0x0030: 0000 dcf2 0600 0000 0000 ffff ffff ffff
0x0040: ffff ffff ffff ffff ffff ffff ffff ffff
0x0050: ffff ffff ffff ffff ffff ffff ffff ffff
0x0060: ffff 961f
Those last two bytes - 96 1f - aren't part of the original packet.
In the ax88179 RX path, the usbnet rx_fixup function trims a 2-byte
'alignment pseudo header' from the start of the packet, and sets the
length from a per-packet field populated by hardware. It looks like that
length field *includes* the 2-byte header; the current driver assumes
that it's excluded.
This change trims the 2-byte alignment header after we've set the packet
length, so the resulting packet length is correct. While we're moving
the comment around, this also fixes the spelling of 'pseudo'.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Dumazet [Thu, 18 Jun 2020 05:23:25 +0000 (22:23 -0700)]
net: increment xmit_recursion level in dev_direct_xmit()
[ Upstream commit
0ad6f6e767ec2f613418cbc7ebe5ec4c35af540c ]
Back in commit
f60e5990d9c1 ("ipv6: protect skb->sk accesses
from recursive dereference inside the stack") Hannes added code
so that IPv6 stack would not trust skb->sk for typical cases
where packet goes through 'standard' xmit path (__dev_queue_xmit())
Alas af_packet had a dev_direct_xmit() path that was not
dealing yet with xmit_recursion level.
Also change sk_mc_loop() to dump a stack once only.
Without this patch, syzbot was able to trigger :
[1]
[ 153.567378] WARNING: CPU: 7 PID: 11273 at net/core/sock.c:721 sk_mc_loop+0x51/0x70
[ 153.567378] Modules linked in: nfnetlink ip6table_raw ip6table_filter iptable_raw iptable_nat nf_nat nf_conntrack nf_defrag_ipv4 nf_defrag_ipv6 iptable_filter macsec macvtap tap macvlan 8021q hsr wireguard libblake2s blake2s_x86_64 libblake2s_generic udp_tunnel ip6_udp_tunnel libchacha20poly1305 poly1305_x86_64 chacha_x86_64 libchacha curve25519_x86_64 libcurve25519_generic netdevsim batman_adv dummy team bridge stp llc w1_therm wire i2c_mux_pca954x i2c_mux cdc_acm ehci_pci ehci_hcd mlx4_en mlx4_ib ib_uverbs ib_core mlx4_core
[ 153.567386] CPU: 7 PID: 11273 Comm:
b159172088 Not tainted 5.8.0-smp-DEV #273
[ 153.567387] RIP: 0010:sk_mc_loop+0x51/0x70
[ 153.567388] Code: 66 83 f8 0a 75 24 0f b6 4f 12 b8 01 00 00 00 31 d2 d3 e0 a9 bf ef ff ff 74 07 48 8b 97 f0 02 00 00 0f b6 42 3a 83 e0 01 5d c3 <0f> 0b b8 01 00 00 00 5d c3 0f b6 87 18 03 00 00 5d c0 e8 04 83 e0
[ 153.567388] RSP: 0018:
ffff95c69bb93990 EFLAGS:
00010212
[ 153.567388] RAX:
0000000000000011 RBX:
ffff95c6e0ee3e00 RCX:
0000000000000007
[ 153.567389] RDX:
ffff95c69ae50000 RSI:
ffff95c6c30c3000 RDI:
ffff95c6c30c3000
[ 153.567389] RBP:
ffff95c69bb93990 R08:
ffff95c69a77f000 R09:
0000000000000008
[ 153.567389] R10:
0000000000000040 R11:
00003e0e00026128 R12:
ffff95c6c30c3000
[ 153.567390] R13:
ffff95c6cc4fd500 R14:
ffff95c6f84500c0 R15:
ffff95c69aa13c00
[ 153.567390] FS:
00007fdc3a283700(0000) GS:
ffff95c6ff9c0000(0000) knlGS:
0000000000000000
[ 153.567390] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 153.567391] CR2:
00007ffee758e890 CR3:
0000001f9ba20003 CR4:
00000000001606e0
[ 153.567391] Call Trace:
[ 153.567391] ip6_finish_output2+0x34e/0x550
[ 153.567391] __ip6_finish_output+0xe7/0x110
[ 153.567391] ip6_finish_output+0x2d/0xb0
[ 153.567392] ip6_output+0x77/0x120
[ 153.567392] ? __ip6_finish_output+0x110/0x110
[ 153.567392] ip6_local_out+0x3d/0x50
[ 153.567392] ipvlan_queue_xmit+0x56c/0x5e0
[ 153.567393] ? ksize+0x19/0x30
[ 153.567393] ipvlan_start_xmit+0x18/0x50
[ 153.567393] dev_direct_xmit+0xf3/0x1c0
[ 153.567393] packet_direct_xmit+0x69/0xa0
[ 153.567394] packet_sendmsg+0xbf0/0x19b0
[ 153.567394] ? plist_del+0x62/0xb0
[ 153.567394] sock_sendmsg+0x65/0x70
[ 153.567394] sock_write_iter+0x93/0xf0
[ 153.567394] new_sync_write+0x18e/0x1a0
[ 153.567395] __vfs_write+0x29/0x40
[ 153.567395] vfs_write+0xb9/0x1b0
[ 153.567395] ksys_write+0xb1/0xe0
[ 153.567395] __x64_sys_write+0x1a/0x20
[ 153.567395] do_syscall_64+0x43/0x70
[ 153.567396] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 153.567396] RIP: 0033:0x453549
[ 153.567396] Code: Bad RIP value.
[ 153.567396] RSP: 002b:
00007fdc3a282cc8 EFLAGS:
00000246 ORIG_RAX:
0000000000000001
[ 153.567397] RAX:
ffffffffffffffda RBX:
00000000004d32d0 RCX:
0000000000453549
[ 153.567397] RDX:
0000000000000020 RSI:
0000000020000300 RDI:
0000000000000003
[ 153.567398] RBP:
00000000004d32d8 R08:
0000000000000000 R09:
0000000000000000
[ 153.567398] R10:
0000000000000000 R11:
0000000000000246 R12:
00000000004d32dc
[ 153.567398] R13:
00007ffee742260f R14:
00007fdc3a282dc0 R15:
00007fdc3a283700
[ 153.567399] ---[ end trace
c1d5ae2b1059ec62 ]---
f60e5990d9c1 ("ipv6: protect skb->sk accesses from recursive dereference inside the stack")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
guodeqing [Wed, 17 Jun 2020 02:07:16 +0000 (10:07 +0800)]
net: Fix the arp error in some cases
[ Upstream commit
5eea3a63ff4aba6a26002e657a6d21934b7e2b96 ]
ie.,
$ ifconfig eth0 6.6.6.6 netmask 255.255.255.0
$ ip rule add from 6.6.6.6 table 6666
$ ip route add 9.9.9.9 via 6.6.6.6
$ ping -I 6.6.6.6 9.9.9.9
PING 9.9.9.9 (9.9.9.9) from 6.6.6.6 : 56(84) bytes of data.
3 packets transmitted, 0 received, 100% packet loss, time 2079ms
$ arp
Address HWtype HWaddress Flags Mask Iface
6.6.6.6 (incomplete) eth0
The arp request address is error, this is because fib_table_lookup in
fib_check_nh lookup the destnation 9.9.9.9 nexthop, the scope of
the fib result is RT_SCOPE_LINK,the correct scope is RT_SCOPE_HOST.
Here I add a check of whether this is RT_TABLE_MAIN to solve this problem.
Fixes: 3bfd847203c6 ("net: Use passed in table for nexthop lookups")
Signed-off-by: guodeqing <geffrey.guo@huawei.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yang Yingliang [Tue, 16 Jun 2020 09:39:21 +0000 (09:39 +0000)]
net: fix memleak in register_netdevice()
[ Upstream commit
814152a89ed52c722ab92e9fbabcac3cb8a39245 ]
I got a memleak report when doing some fuzz test:
unreferenced object 0xffff888112584000 (size 13599):
comm "ip", pid 3048, jiffies
4294911734 (age 343.491s)
hex dump (first 32 bytes):
74 61 70 30 00 00 00 00 00 00 00 00 00 00 00 00 tap0............
00 ee d9 19 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[<
000000002f60ba65>] __kmalloc_node+0x309/0x3a0
[<
0000000075b211ec>] kvmalloc_node+0x7f/0xc0
[<
00000000d3a97396>] alloc_netdev_mqs+0x76/0xfc0
[<
00000000609c3655>] __tun_chr_ioctl+0x1456/0x3d70
[<
000000001127ca24>] ksys_ioctl+0xe5/0x130
[<
00000000b7d5e66a>] __x64_sys_ioctl+0x6f/0xb0
[<
00000000e1023498>] do_syscall_64+0x56/0xa0
[<
000000009ec0eb12>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
unreferenced object 0xffff888111845cc0 (size 8):
comm "ip", pid 3048, jiffies
4294911734 (age 343.491s)
hex dump (first 8 bytes):
74 61 70 30 00 88 ff ff tap0....
backtrace:
[<
000000004c159777>] kstrdup+0x35/0x70
[<
00000000d8b496ad>] kstrdup_const+0x3d/0x50
[<
00000000494e884a>] kvasprintf_const+0xf1/0x180
[<
0000000097880a2b>] kobject_set_name_vargs+0x56/0x140
[<
000000008fbdfc7b>] dev_set_name+0xab/0xe0
[<
000000005b99e3b4>] netdev_register_kobject+0xc0/0x390
[<
00000000602704fe>] register_netdevice+0xb61/0x1250
[<
000000002b7ca244>] __tun_chr_ioctl+0x1cd1/0x3d70
[<
000000001127ca24>] ksys_ioctl+0xe5/0x130
[<
00000000b7d5e66a>] __x64_sys_ioctl+0x6f/0xb0
[<
00000000e1023498>] do_syscall_64+0x56/0xa0
[<
000000009ec0eb12>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
unreferenced object 0xffff88811886d800 (size 512):
comm "ip", pid 3048, jiffies
4294911734 (age 343.491s)
hex dump (first 32 bytes):
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
ff ff ff ff ff ff ff ff c0 66 3d a3 ff ff ff ff .........f=.....
backtrace:
[<
0000000050315800>] device_add+0x61e/0x1950
[<
0000000021008dfb>] netdev_register_kobject+0x17e/0x390
[<
00000000602704fe>] register_netdevice+0xb61/0x1250
[<
000000002b7ca244>] __tun_chr_ioctl+0x1cd1/0x3d70
[<
000000001127ca24>] ksys_ioctl+0xe5/0x130
[<
00000000b7d5e66a>] __x64_sys_ioctl+0x6f/0xb0
[<
00000000e1023498>] do_syscall_64+0x56/0xa0
[<
000000009ec0eb12>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
If call_netdevice_notifiers() failed, then rollback_registered()
calls netdev_unregister_kobject() which holds the kobject. The
reference cannot be put because the netdev won't be add to todo
list, so it will leads a memleak, we need put the reference to
avoid memleak.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexander Lobakin [Tue, 23 Jun 2020 10:43:48 +0000 (10:43 +0000)]
net: ethtool: add missing string for NETIF_F_GSO_TUNNEL_REMCSUM
[ Upstream commit
b4730ae6a443afe611afb4fb651c885c51003c15 ]
Commit
e585f2363637 ("udp: Changes to udp_offload to support remote
checksum offload") added new GSO type and a corresponding netdev
feature, but missed Ethtool's 'netdev_features_strings' table.
Give it a name so it will be exposed to userspace and become available
for manual configuration.
v3:
- decouple from "netdev_features_strings[] cleanup" series;
- no functional changes.
v2:
- don't split the "Fixes:" tag across lines;
- no functional changes.
Fixes: e585f2363637 ("udp: Changes to udp_offload to support remote checksum offload")
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tariq Toukan [Mon, 22 Jun 2020 20:26:04 +0000 (23:26 +0300)]
net: Do not clear the sock TX queue in sk_set_socket()
[ Upstream commit
41b14fb8724d5a4b382a63cb4a1a61880347ccb8 ]
Clearing the sock TX queue in sk_set_socket() might cause unexpected
out-of-order transmit when called from sock_orphan(), as outstanding
packets can pick a different TX queue and bypass the ones already queued.
This is undesired in general. More specifically, it breaks the in-order
scheduling property guarantee for device-offloaded TLS sockets.
Remove the call to sk_tx_queue_clear() in sk_set_socket(), and add it
explicitly only where needed.
Fixes: e022f0b4a03f ("net: Introduce sk_tx_queue_mapping")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Taehee Yoo [Tue, 16 Jun 2020 15:52:05 +0000 (15:52 +0000)]
net: core: reduce recursion limit value
[ Upstream commit
fb7861d14c8d7edac65b2fcb6e8031cb138457b2 ]
In the current code, ->ndo_start_xmit() can be executed recursively only
10 times because of stack memory.
But, in the case of the vxlan, 10 recursion limit value results in
a stack overflow.
In the current code, the nested interface is limited by 8 depth.
There is no critical reason that the recursion limitation value should
be 10.
So, it would be good to be the same value with the limitation value of
nesting interface depth.
Test commands:
ip link add vxlan10 type vxlan vni 10 dstport 4789 srcport 4789 4789
ip link set vxlan10 up
ip a a 192.168.10.1/24 dev vxlan10
ip n a 192.168.10.2 dev vxlan10 lladdr fc:22:33:44:55:66 nud permanent
for i in {9..0}
do
let A=$i+1
ip link add vxlan$i type vxlan vni $i dstport 4789 srcport 4789 4789
ip link set vxlan$i up
ip a a 192.168.$i.1/24 dev vxlan$i
ip n a 192.168.$i.2 dev vxlan$i lladdr fc:22:33:44:55:66 nud permanent
bridge fdb add fc:22:33:44:55:66 dev vxlan$A dst 192.168.$i.2 self
done
hping3 192.168.10.2 -2 -d 60000
Splat looks like:
[ 103.814237][ T1127] =============================================================================
[ 103.871955][ T1127] BUG kmalloc-2k (Tainted: G B ): Padding overwritten. 0x00000000897a2e4f-0x000
[ 103.873187][ T1127] -----------------------------------------------------------------------------
[ 103.873187][ T1127]
[ 103.874252][ T1127] INFO: Slab 0x000000005cccc724 objects=5 used=5 fp=0x0000000000000000 flags=0x10000000001020
[ 103.881323][ T1127] CPU: 3 PID: 1127 Comm: hping3 Tainted: G B 5.7.0+ #575
[ 103.882131][ T1127] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 103.883006][ T1127] Call Trace:
[ 103.883324][ T1127] dump_stack+0x96/0xdb
[ 103.883716][ T1127] slab_err+0xad/0xd0
[ 103.884106][ T1127] ? _raw_spin_unlock+0x1f/0x30
[ 103.884620][ T1127] ? get_partial_node.isra.78+0x140/0x360
[ 103.885214][ T1127] slab_pad_check.part.53+0xf7/0x160
[ 103.885769][ T1127] ? pskb_expand_head+0x110/0xe10
[ 103.886316][ T1127] check_slab+0x97/0xb0
[ 103.886763][ T1127] alloc_debug_processing+0x84/0x1a0
[ 103.887308][ T1127] ___slab_alloc+0x5a5/0x630
[ 103.887765][ T1127] ? pskb_expand_head+0x110/0xe10
[ 103.888265][ T1127] ? lock_downgrade+0x730/0x730
[ 103.888762][ T1127] ? pskb_expand_head+0x110/0xe10
[ 103.889244][ T1127] ? __slab_alloc+0x3e/0x80
[ 103.889675][ T1127] __slab_alloc+0x3e/0x80
[ 103.890108][ T1127] __kmalloc_node_track_caller+0xc7/0x420
[ ... ]
Fixes: 11a766ce915f ("net: Increase xmit RECURSION_LIMIT to 10.")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Martitz [Thu, 25 Jun 2020 12:26:03 +0000 (14:26 +0200)]
net: bridge: enfore alignment for ethernet address
[ Upstream commit
db7202dec92e6caa2706c21d6fc359af318bde2e ]
The eth_addr member is passed to ether_addr functions that require
2-byte alignment, therefore the member must be properly aligned
to avoid unaligned accesses.
The problem is in place since the initial merge of multicast to unicast:
commit
6db6f0eae6052b70885562e1733896647ec1d807 bridge: multicast to unicast
Fixes: 6db6f0eae605 ("bridge: multicast to unicast")
Cc: Roopa Prabhu <roopa@cumulusnetworks.com>
Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Martitz <t.martitz@avm.de>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sven Auhagen [Sun, 14 Jun 2020 07:19:17 +0000 (09:19 +0200)]
mvpp2: ethtool rxtx stats fix
[ Upstream commit
cc970925feb9a38c2f0d34305518e00a3084ce85 ]
The ethtool rx and tx queue statistics are reporting wrong values.
Fix reading out the correct ones.
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ido Schimmel [Sun, 21 Jun 2020 08:29:17 +0000 (11:29 +0300)]
mlxsw: spectrum: Do not rely on machine endianness
[ Upstream commit
f3fe412b0a634286a6a3753c3f9ff201e6bec716 ]
The second commit cited below performed a cast of 'u32 buffsize' to
'(u16 *)' when calling mlxsw_sp_port_headroom_8x_adjust():
mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, (u16 *) &buffsize);
Colin noted that this will behave differently on big endian
architectures compared to little endian architectures.
Fix this by following Colin's suggestion and have the function accept
and return 'u32' instead of passing the current size by reference.
Fixes: da382875c616 ("mlxsw: spectrum: Extend to support Spectrum-3 ASIC")
Fixes: 60833d54d56c ("mlxsw: spectrum: Adjust headroom buffers for 8x ports")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Colin Ian King <colin.king@canonical.com>
Suggested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Wang Hai [Thu, 11 Jun 2020 07:57:50 +0000 (15:57 +0800)]
mld: fix memory leak in ipv6_mc_destroy_dev()
[ Upstream commit
ea2fce88d2fd678ed9d45354ff49b73f1d5615dd ]
Commit
a84d01647989 ("mld: fix memory leak in mld_del_delrec()") fixed
the memory leak of MLD, but missing the ipv6_mc_destroy_dev() path, in
which mca_sources are leaked after ma_put().
Using ip6_mc_clear_src() to take care of the missing free.
BUG: memory leak
unreferenced object 0xffff8881113d3180 (size 64):
comm "syz-executor071", pid 389, jiffies
4294887985 (age 17.943s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 ff 02 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 ................
backtrace:
[<
000000002cbc483c>] kmalloc include/linux/slab.h:555 [inline]
[<
000000002cbc483c>] kzalloc include/linux/slab.h:669 [inline]
[<
000000002cbc483c>] ip6_mc_add1_src net/ipv6/mcast.c:2237 [inline]
[<
000000002cbc483c>] ip6_mc_add_src+0x7f5/0xbb0 net/ipv6/mcast.c:2357
[<
0000000058b8b1ff>] ip6_mc_source+0xe0c/0x1530 net/ipv6/mcast.c:449
[<
000000000bfc4fb5>] do_ipv6_setsockopt.isra.12+0x1b2c/0x3b30 net/ipv6/ipv6_sockglue.c:754
[<
00000000e4e7a722>] ipv6_setsockopt+0xda/0x150 net/ipv6/ipv6_sockglue.c:950
[<
0000000029260d9a>] rawv6_setsockopt+0x45/0x100 net/ipv6/raw.c:1081
[<
000000005c1b46f9>] __sys_setsockopt+0x131/0x210 net/socket.c:2132
[<
000000008491f7db>] __do_sys_setsockopt net/socket.c:2148 [inline]
[<
000000008491f7db>] __se_sys_setsockopt net/socket.c:2145 [inline]
[<
000000008491f7db>] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2145
[<
00000000c7bc11c5>] do_syscall_64+0xa1/0x530 arch/x86/entry/common.c:295
[<
000000005fb7a3f3>] entry_SYSCALL_64_after_hwframe+0x49/0xb3
Fixes: 1666d49e1d41 ("mld: do not remove mld souce list info when set link down")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Acked-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Falcon [Thu, 18 Jun 2020 15:43:46 +0000 (10:43 -0500)]
ibmveth: Fix max MTU limit
[ Upstream commit
5948378b26d89f8aa5eac37629dbd0616ce8d7a7 ]
The max MTU limit defined for ibmveth is not accounting for
virtual ethernet buffer overhead, which is twenty-two additional
bytes set aside for the ethernet header and eight additional bytes
of an opaque handle reserved for use by the hypervisor. Update the
max MTU to reflect this overhead.
Fixes: d894be57ca92 ("ethernet: use net core MTU range checking in more drivers")
Fixes: 110447f8269a ("ethernet: fix min/max MTU typos")
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sabrina Dubroca [Thu, 18 Jun 2020 10:13:22 +0000 (12:13 +0200)]
geneve: allow changing DF behavior after creation
[ Upstream commit
56c09de347e40804fc8dad155272fb9609e0a97b ]
Currently, trying to change the DF parameter of a geneve device does
nothing:
# ip -d link show geneve1
14: geneve1: <snip>
link/ether <snip>
geneve id 1 remote 10.0.0.1 ttl auto df set dstport 6081 <snip>
# ip link set geneve1 type geneve id 1 df unset
# ip -d link show geneve1
14: geneve1: <snip>
link/ether <snip>
geneve id 1 remote 10.0.0.1 ttl auto df set dstport 6081 <snip>
We just need to update the value in geneve_changelink.
Fixes: a025fb5f49ad ("geneve: Allow configuration of DF behaviour")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gaurav Singh [Sun, 21 Jun 2020 15:30:17 +0000 (11:30 -0400)]
ethtool: Fix check in ethtool_rx_flow_rule_create
[ Upstream commit
21a739c64d3e9871186483a0cc3e7b52638c3d59 ]
Fix check in ethtool_rx_flow_rule_create
Fixes: eca4205f9ec3 ("ethtool: add ethtool_rx_flow_spec to flow_rule structure translator")
Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Claudiu Manoil [Fri, 26 Jun 2020 16:17:29 +0000 (19:17 +0300)]
enetc: Fix tx rings bitmap iteration range, irq handling
[ Upstream commit
0574e2000fc3103cbc69ba82ec1175ce171fdf5e ]
The rings bitmap of an interrupt vector encodes
which of the device's rings were assigned to that
interrupt vector.
Hence the iteration range of the tx rings bitmap
(for_each_set_bit()) should be the total number of
Tx rings of that netdevice instead of the number of
rings assigned to the interrupt vector.
Since there are 2 cores, and one interrupt vector for
each core, the number of rings asigned to an interrupt
vector is half the number of available rings.
The impact of this error is that the upper half of the
tx rings could still generate interrupts during napi
polling.
Fixes: d4fd0404c1c9 ("enetc: Introduce basic PF and VF ENETC ethernet drivers")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
yu kuai [Mon, 1 Jun 2020 12:38:56 +0000 (20:38 +0800)]
block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed
commit
a75ca9303175d36af93c0937dd9b1a6422908b8d upstream.
commit
e7bf90e5afe3 ("block/bio-integrity: fix a memory leak bug") added
a kfree() for 'buf' if bio_integrity_add_page() returns '0'. However,
the object will be freed in bio_integrity_free() since 'bio->bi_opf' and
'bio->bi_integrity' were set previousy in bio_integrity_alloc().
Fixes: commit e7bf90e5afe3 ("block/bio-integrity: fix a memory leak bug")
Signed-off-by: yu kuai <yukuai3@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Krzysztof Kozlowski [Wed, 10 Jun 2020 15:41:57 +0000 (17:41 +0200)]
spi: spi-fsl-dspi: Free DMA memory with matching function
commit
03fe7aaf0c3d40ef7feff2bdc7180c146989586a upstream.
Driver allocates DMA memory with dma_alloc_coherent() but frees it with
dma_unmap_single().
This causes DMA warning during system shutdown (with DMA debugging) on
Toradex Colibri VF50 module:
WARNING: CPU: 0 PID: 1 at ../kernel/dma/debug.c:1036 check_unmap+0x3fc/0xb04
DMA-API: fsl-edma
40098000.dma-controller: device driver frees DMA memory with wrong function
[device address=0x0000000087040000] [size=8 bytes] [mapped as coherent] [unmapped as single]
Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
(unwind_backtrace) from [<
8010bb34>] (show_stack+0x10/0x14)
(show_stack) from [<
8011ced8>] (__warn+0xf0/0x108)
(__warn) from [<
8011cf64>] (warn_slowpath_fmt+0x74/0xb8)
(warn_slowpath_fmt) from [<
8017d170>] (check_unmap+0x3fc/0xb04)
(check_unmap) from [<
8017d900>] (debug_dma_unmap_page+0x88/0x90)
(debug_dma_unmap_page) from [<
80601d68>] (dspi_release_dma+0x88/0x110)
(dspi_release_dma) from [<
80601e4c>] (dspi_shutdown+0x5c/0x80)
(dspi_shutdown) from [<
805845f8>] (device_shutdown+0x17c/0x220)
(device_shutdown) from [<
80143ef8>] (kernel_restart+0xc/0x50)
(kernel_restart) from [<
801441cc>] (__do_sys_reboot+0x18c/0x210)
(__do_sys_reboot) from [<
80100060>] (ret_fast_syscall+0x0/0x28)
DMA-API: Mapped at:
dma_alloc_attrs+0xa4/0x130
dspi_probe+0x568/0x7b4
platform_drv_probe+0x6c/0xa4
really_probe+0x208/0x348
driver_probe_device+0x5c/0xb4
Fixes: 90ba37033cb9 ("spi: spi-fsl-dspi: Add DMA support for Vybrid")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1591803717-11218-1-git-send-email-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 24 Jun 2020 15:49:26 +0000 (17:49 +0200)]
Linux 5.7.6
Jon Derrick [Wed, 27 May 2020 16:56:17 +0000 (10:56 -0600)]
iommu/vt-d: Remove real DMA lookup in find_domain
commit
bba9cc2cf82840bd3c9b3f4f7edac2dc8329c241 upstream.
By removing the real DMA indirection in find_domain(), we can allow
sub-devices of a real DMA device to have their own valid
device_domain_info. The dmar lookup and context entry removal paths have
been fixed to account for sub-devices.
Fixes: 2b0140c69637 ("iommu/vt-d: Use pci_real_dma_dev() for mapping")
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200527165617.297470-4-jonathan.derrick@intel.com
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=207575
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sushma Kalakota <sushmax.kalakota@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ahmed S. Darwish [Wed, 3 Jun 2020 14:49:44 +0000 (16:49 +0200)]
net: core: device_rename: Use rwsem instead of a seqcount
commit
11d6011c2cf29f7c8181ebde6c8bc0c4d83adcd7 upstream.
Sequence counters write paths are critical sections that must never be
preempted, and blocking, even for CONFIG_PREEMPTION=n, is not allowed.
Commit
5dbe7c178d3f ("net: fix kernel deadlock with interface rename and
netdev name retrieval.") handled a deadlock, observed with
CONFIG_PREEMPTION=n, where the devnet_rename seqcount read side was
infinitely spinning: it got scheduled after the seqcount write side
blocked inside its own critical section.
To fix that deadlock, among other issues, the commit added a
cond_resched() inside the read side section. While this will get the
non-preemptible kernel eventually unstuck, the seqcount reader is fully
exhausting its slice just spinning -- until TIF_NEED_RESCHED is set.
The fix is also still broken: if the seqcount reader belongs to a
real-time scheduling policy, it can spin forever and the kernel will
livelock.
Disabling preemption over the seqcount write side critical section will
not work: inside it are a number of GFP_KERNEL allocations and mutex
locking through the drivers/base/ :: device_rename() call chain.
>From all the above, replace the seqcount with a rwsem.
Fixes: 5dbe7c178d3f (net: fix kernel deadlock with interface rename and netdev name retrieval.)
Fixes: 30e6c9fa93cf (net: devnet_rename_seq should be a seqcount)
Fixes: c91f6df2db49 (sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name)
Cc: <stable@vger.kernel.org>
Reported-by: kbuild test robot <lkp@intel.com> [ v1 missing up_read() on error exit ]
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> [ v1 missing up_read() on error exit ]
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexander Sverdlin [Fri, 29 May 2020 12:17:10 +0000 (14:17 +0200)]
net: octeon: mgmt: Repair filling of RX ring
commit
0c34bb598c510e070160029f34efeeb217000f8d upstream.
The removal of mips_swiotlb_ops exposed a problem in octeon_mgmt Ethernet
driver. mips_swiotlb_ops had an mb() after most of the operations and the
removal of the ops had broken the receive functionality of the driver.
My code inspection has shown no other places except
octeon_mgmt_rx_fill_ring() where an explicit barrier would be obviously
missing. The latter function however has to make sure that "ringing the
bell" doesn't happen before RX ring entry is really written.
The patch has been successfully tested on Octeon II.
Fixes: a999933db9ed ("MIPS: remove mips_swiotlb_ops")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chen Yu [Thu, 21 May 2020 17:59:00 +0000 (01:59 +0800)]
e1000e: Do not wake up the system via WOL if device wakeup is disabled
commit
6bf6be1127f7e6d4bf39f84d56854e944d045d74 upstream.
Currently the system will be woken up via WOL(Wake On LAN) even if the
device wakeup ability has been disabled via sysfs:
cat /sys/devices/pci0000:00/0000:00:1f.6/power/wakeup
disabled
The system should not be woken up if the user has explicitly
disabled the wake up ability for this device.
This patch clears the WOL ability of this network device if the
user has disabled the wake up ability in sysfs.
Fixes: bc7f75fa9788 ("[E1000E]: New pci-express e1000 driver")
Reported-by: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicholas Piggin [Mon, 15 Jun 2020 06:12:47 +0000 (16:12 +1000)]
powerpc/64s: Fix KVM interrupt using wrong save area
commit
0bdcfa182506526fbe4e088ff9ca86a31b81828d upstream.
The CTR register reload in the KVM interrupt path used the wrong save
area for SLB (and NMI) interrupts.
Fixes: 9600f261acaa ("powerpc/64s/exception: Move KVM test to common code")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200615061247.1310763-1-npiggin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jiri Olsa [Tue, 12 May 2020 08:03:18 +0000 (17:03 +0900)]
kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
commit
9b38cc704e844e41d9cf74e647bff1d249512cb3 upstream.
Ziqian reported lockup when adding retprobe on _raw_spin_lock_irqsave.
My test was also able to trigger lockdep output:
============================================
WARNING: possible recursive locking detected
5.6.0-rc6+ #6 Not tainted
--------------------------------------------
sched-messaging/2767 is trying to acquire lock:
ffffffff9a492798 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_hash_lock+0x52/0xa0
but task is already holding lock:
ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(kretprobe_table_locks[i].lock));
lock(&(kretprobe_table_locks[i].lock));
*** DEADLOCK ***
May be due to missing lock nesting notation
1 lock held by sched-messaging/2767:
#0:
ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
stack backtrace:
CPU: 3 PID: 2767 Comm: sched-messaging Not tainted 5.6.0-rc6+ #6
Call Trace:
dump_stack+0x96/0xe0
__lock_acquire.cold.57+0x173/0x2b7
? native_queued_spin_lock_slowpath+0x42b/0x9e0
? lockdep_hardirqs_on+0x590/0x590
? __lock_acquire+0xf63/0x4030
lock_acquire+0x15a/0x3d0
? kretprobe_hash_lock+0x52/0xa0
_raw_spin_lock_irqsave+0x36/0x70
? kretprobe_hash_lock+0x52/0xa0
kretprobe_hash_lock+0x52/0xa0
trampoline_handler+0xf8/0x940
? kprobe_fault_handler+0x380/0x380
? find_held_lock+0x3a/0x1c0
kretprobe_trampoline+0x25/0x50
? lock_acquired+0x392/0xbc0
? _raw_spin_lock_irqsave+0x50/0x70
? __get_valid_kprobe+0x1f0/0x1f0
? _raw_spin_unlock_irqrestore+0x3b/0x40
? finish_task_switch+0x4b9/0x6d0
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
The code within the kretprobe handler checks for probe reentrancy,
so we won't trigger any _raw_spin_lock_irqsave probe in there.
The problem is in outside kprobe_flush_task, where we call:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave
where _raw_spin_lock_irqsave triggers the kretprobe and installs
kretprobe_trampoline handler on _raw_spin_lock_irqsave return.
The kretprobe_trampoline handler is then executed with already
locked kretprobe_table_locks, and first thing it does is to
lock kretprobe_table_locks ;-) the whole lockup path like:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave ---> probe triggered, kretprobe_trampoline installed
---> kretprobe_table_locks locked
kretprobe_trampoline
trampoline_handler
kretprobe_hash_lock(current, &head, &flags); <--- deadlock
Adding kprobe_busy_begin/end helpers that mark code with fake
probe installed to prevent triggering of another kprobe within
this code.
Using these helpers in kprobe_flush_task, so the probe recursion
protection check is hit and the probe is never set to prevent
above lockup.
Link: http://lkml.kernel.org/r/158927059835.27680.7011202830041561604.stgit@devnote2
Fixes: ef53d9c5e4da ("kprobes: improve kretprobe scalability with hashed locking")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Reported-by: "Ziqian SUN (Zamir)" <zsun@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Masami Hiramatsu [Tue, 12 May 2020 08:02:56 +0000 (17:02 +0900)]
kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
commit
1a0aa991a6274161c95a844c58cfb801d681eb59 upstream.
In kprobe_optimizer() kick_kprobe_optimizer() is called
without kprobe_mutex, but this can race with other caller
which is protected by kprobe_mutex.
To fix that, expand kprobe_mutex protected area to protect
kick_kprobe_optimizer() call.
Link: http://lkml.kernel.org/r/158927057586.27680.5036330063955940456.stgit@devnote2
Fixes: cd7ebe2298ff ("kprobes: Use text_poke_smp_batch for optimizing")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ziqian SUN <zsun@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stefano Brivio [Mon, 8 Jun 2020 08:50:29 +0000 (10:50 +0200)]
netfilter: nft_set_pipapo: Disable preemption before getting per-CPU pointer
commit
c3829285b2e6a0d5461078d7f6cbb2c2b4bf8c4e upstream.
The lkp kernel test robot reports, with CONFIG_DEBUG_PREEMPT enabled:
[ 165.316525] BUG: using smp_processor_id() in preemptible [
00000000] code: nft/6247
[ 165.319547] caller is nft_pipapo_insert+0x464/0x610 [nf_tables]
[ 165.321846] CPU: 1 PID: 6247 Comm: nft Not tainted
5.6.0-rc5-01595-ge32a4dc6512ce3 #1
[ 165.332128] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 165.334892] Call Trace:
[ 165.336435] dump_stack+0x8f/0xcb
[ 165.338128] debug_smp_processor_id+0xb2/0xc0
[ 165.340117] nft_pipapo_insert+0x464/0x610 [nf_tables]
[ 165.342290] ? nft_trans_alloc_gfp+0x1c/0x60 [nf_tables]
[ 165.344420] ? rcu_read_lock_sched_held+0x52/0x80
[ 165.346460] ? nft_trans_alloc_gfp+0x1c/0x60 [nf_tables]
[ 165.348543] ? __mmu_interval_notifier_insert+0xa0/0xf0
[ 165.350629] nft_add_set_elem+0x5ff/0xa90 [nf_tables]
[ 165.352699] ? __lock_acquire+0x241/0x1400
[ 165.354573] ? __lock_acquire+0x241/0x1400
[ 165.356399] ? reacquire_held_locks+0x12f/0x200
[ 165.358384] ? nf_tables_valid_genid+0x1f/0x40 [nf_tables]
[ 165.360502] ? nla_strcmp+0x10/0x50
[ 165.362199] ? nft_table_lookup+0x4f/0xa0 [nf_tables]
[ 165.364217] ? nla_strcmp+0x10/0x50
[ 165.365891] ? nf_tables_newsetelem+0xd5/0x150 [nf_tables]
[ 165.367997] nf_tables_newsetelem+0xd5/0x150 [nf_tables]
[ 165.370083] nfnetlink_rcv_batch+0x4fd/0x790 [nfnetlink]
[ 165.372205] ? __lock_acquire+0x241/0x1400
[ 165.374058] ? __nla_validate_parse+0x57/0x8a0
[ 165.375989] ? cap_inode_getsecurity+0x230/0x230
[ 165.377954] ? security_capable+0x38/0x50
[ 165.379795] nfnetlink_rcv+0x11d/0x140 [nfnetlink]
[ 165.381779] netlink_unicast+0x1b2/0x280
[ 165.383612] netlink_sendmsg+0x351/0x470
[ 165.385439] sock_sendmsg+0x5b/0x60
[ 165.387133] ____sys_sendmsg+0x200/0x280
[ 165.388871] ? copy_msghdr_from_user+0xd9/0x160
[ 165.390805] ___sys_sendmsg+0x88/0xd0
[ 165.392524] ? __might_fault+0x3e/0x90
[ 165.394273] ? sock_getsockopt+0x3d5/0xbb0
[ 165.396021] ? __handle_mm_fault+0x545/0x6a0
[ 165.397822] ? find_held_lock+0x2d/0x90
[ 165.399593] ? __sys_sendmsg+0x5e/0xa0
[ 165.401338] __sys_sendmsg+0x5e/0xa0
[ 165.402979] do_syscall_64+0x60/0x280
[ 165.404680] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 165.406621] RIP: 0033:0x7ff1fa46e783
[ 165.408299] Code: c7 c0 ff ff ff ff eb bb 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 89 54 24 1c 48
[ 165.414163] RSP: 002b:
00007ffedf59ea78 EFLAGS:
00000246 ORIG_RAX:
000000000000002e
[ 165.416804] RAX:
ffffffffffffffda RBX:
00007ffedf59fc60 RCX:
00007ff1fa46e783
[ 165.419419] RDX:
0000000000000000 RSI:
00007ffedf59fb10 RDI:
0000000000000005
[ 165.421886] RBP:
00007ffedf59fc10 R08:
00007ffedf59ea54 R09:
0000000000000001
[ 165.424445] R10:
00007ff1fa630c6c R11:
0000000000000246 R12:
0000000000020000
[ 165.426954] R13:
0000000000000280 R14:
0000000000000005 R15:
00007ffedf59ea90
Disable preemption before accessing the lookup scratch area in
nft_pipapo_insert().
Reported-by: kernel test robot <lkp@intel.com>
Analysed-by: Florian Westphal <fw@strlen.de>
Cc: <stable@vger.kernel.org> # 5.6.x
Fixes: 3c4287f62044 ("nf_tables: Add set type for arbitrary concatenation of ranges")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stefano Brivio [Tue, 2 Jun 2020 23:50:11 +0000 (01:50 +0200)]
netfilter: nft_set_rbtree: Don't account for expired elements on insertion
commit
33d077996a87175b155fe88030e8fec7ca76327e upstream.
While checking the validity of insertion in __nft_rbtree_insert(),
we currently ignore conflicting elements and intervals only if they
are not active within the next generation.
However, if we consider expired elements and intervals as
potentially conflicting and overlapping, we'll return error for
entries that should be added instead. This is particularly visible
with garbage collection intervals that are comparable with the
element timeout itself, as reported by Mike Dillinger.
Other than the simple issue of denying insertion of valid entries,
this might also result in insertion of a single element (opening or
closing) out of a given interval. With single entries (that are
inserted as intervals of size 1), this leads in turn to the creation
of new intervals. For example:
# nft add element t s { 192.0.2.1 }
# nft list ruleset
[...]
elements = { 192.0.2.1-255.255.255.255 }
Always ignore expired elements active in the next generation, while
checking for conflicts.
It might be more convenient to introduce a new macro that covers
both inactive and expired items, as this type of check also appears
quite frequently in other set back-ends. This is however beyond the
scope of this fix and can be deferred to a separate patch.
Other than the overlap detection cases introduced by commit
7c84d41416d8 ("netfilter: nft_set_rbtree: Detect partial overlaps
on insertion"), we also have to cover the original conflict check
dealing with conflicts between two intervals of size 1, which was
introduced before support for timeout was introduced. This won't
return an error to the user as -EEXIST is masked by nft if
NLM_F_EXCL is not given, but would result in a silent failure
adding the entry.
Reported-by: Mike Dillinger <miked@softtalker.com>
Cc: <stable@vger.kernel.org> # 5.6.x
Fixes: 8d8540c4f5e0 ("netfilter: nft_set_rbtree: add timeout support")
Fixes: 7c84d41416d8 ("netfilter: nft_set_rbtree: Detect partial overlaps on insertion")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kefeng Wang [Wed, 10 Jun 2020 01:12:44 +0000 (01:12 +0000)]
sample-trace-array: Fix sleeping function called from invalid context
commit
e9b7b1c0c103a623be1a65c39f98719803440871 upstream.
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:935
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/5
1 lock held by swapper/5/0:
#0:
ffff80001002bd90 (samples/ftrace/sample-trace-array.c:38){+.-.}-{0:0}, at: call_timer_fn+0x8/0x3e0
CPU: 5 PID: 0 Comm: swapper/5 Not tainted 5.7.0+ #8
Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
Call trace:
dump_backtrace+0x0/0x1a0
show_stack+0x20/0x30
dump_stack+0xe4/0x150
___might_sleep+0x160/0x200
__might_sleep+0x58/0x90
__mutex_lock+0x64/0x948
mutex_lock_nested+0x3c/0x58
__ftrace_set_clr_event+0x44/0x88
trace_array_set_clr_event+0x24/0x38
mytimer_handler+0x34/0x40 [sample_trace_array]
mutex_lock() will be called in interrupt context, using workqueue to fix it.
Link: https://lkml.kernel.org/r/20200610011244.2209486-1-wangkefeng.wang@huawei.com
Cc: stable@vger.kernel.org
Fixes: 89ed42495ef4 ("tracing: Sample module to demonstrate kernel access to Ftrace instances.")
Reviewed-by: Divya Indi <divya.indi@oracle.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kefeng Wang [Tue, 9 Jun 2020 13:52:00 +0000 (13:52 +0000)]
sample-trace-array: Remove trace_array 'sample-instance'
commit
9fbc01cdba66e988122ccdc6094cfd85d9587769 upstream.
Remove trace_array 'sample-instance' if kthread_run fails
in sample_trace_array_init().
Link: https://lkml.kernel.org/r/20200609135200.2206726-1-wangkefeng.wang@huawei.com
Cc: stable@vger.kernel.org
Fixes: 89ed42495ef4a ("tracing: Sample module to demonstrate kernel access to Ftrace instances.")
Reviewed-by: Divya Indi <divya.indi@oracle.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Masami Hiramatsu [Tue, 16 Jun 2020 10:14:25 +0000 (19:14 +0900)]
tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig
commit
f91cb5b7476a603068eae31e5b2cc170dd2b9b1b upstream.
Fix bootconfig to return 0 if succeeded to show the bootconfig
in initrd. Without this fix, "bootconfig INITRD" command
returns !0 even if the command succeeded to show the bootconfig.
Link: http://lkml.kernel.org/r/159230246566.65555.11891772258543514487.stgit@devnote2
Cc: stable@vger.kernel.org
Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Masami Hiramatsu [Tue, 16 Jun 2020 10:14:17 +0000 (19:14 +0900)]
tools/bootconfig: Fix to use correct quotes for value
commit
272da3279df191f028fd63d1683e5ecd56fcb13b upstream.
Fix bootconfig tool to select double or single quotes
correctly according to the value.
If a bootconfig value includes a double quote character,
we must use single-quotes to quote that value.
Link: http://lkml.kernel.org/r/159230245697.65555.12444299015852932304.stgit@devnote2
Cc: stable@vger.kernel.org
Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Masami Hiramatsu [Tue, 16 Jun 2020 10:14:08 +0000 (19:14 +0900)]
proc/bootconfig: Fix to use correct quotes for value
commit
4e264ffd953463cd14c0720eaa9315ac052f5973 upstream.
Fix /proc/bootconfig to select double or single quotes
corrctly according to the value.
If a bootconfig value includes a double quote character,
we must use single-quotes to quote that value.
This modifies if() condition and blocks for avoiding
double-quote in value check in 2 places. Anyway, since
xbc_array_for_each_value() can handle the array which
has a single node correctly.
Thus,
if (vnode && xbc_node_is_array(vnode)) {
xbc_array_for_each_value(vnode) /* vnode->next != NULL */
...
} else {
snprintf(val); /* val is an empty string if !vnode */
}
is equivalent to
if (vnode) {
xbc_array_for_each_value(vnode) /* vnode->next can be NULL */
...
} else {
snprintf(""); /* value is always empty */
}
Link: http://lkml.kernel.org/r/159230244786.65555.3763894451251622488.stgit@devnote2
Cc: stable@vger.kernel.org
Fixes: c1a3c36017d4 ("proc: bootconfig: Add /proc/bootconfig to show boot config list")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vamshi K Sthambamkadi [Mon, 15 Jun 2020 14:30:38 +0000 (20:00 +0530)]
tracing/probe: Fix memleak in fetch_op_data operations
commit
3aa8fdc37d16735e8891035becf25b3857d3efe0 upstream.
kmemleak report:
[<
57dcc2ca>] __kmalloc_track_caller+0x139/0x2b0
[<
f1c45d0f>] kstrndup+0x37/0x80
[<
f9761eb0>] parse_probe_arg.isra.7+0x3cc/0x630
[<
055bf2ba>] traceprobe_parse_probe_arg+0x2f5/0x810
[<
655a7766>] trace_kprobe_create+0x2ca/0x950
[<
4fc6a02a>] create_or_delete_trace_kprobe+0xf/0x30
[<
6d1c8a52>] trace_run_command+0x67/0x80
[<
be812cc0>] trace_parse_run_command+0xa7/0x140
[<
aecfe401>] probes_write+0x10/0x20
[<
2027641c>] __vfs_write+0x30/0x1e0
[<
6a4aeee1>] vfs_write+0x96/0x1b0
[<
3517fb7d>] ksys_write+0x53/0xc0
[<
dad91db7>] __ia32_sys_write+0x15/0x20
[<
da347f64>] do_syscall_32_irqs_on+0x3d/0x260
[<
fd0b7e7d>] do_fast_syscall_32+0x39/0xb0
[<
ea5ae810>] entry_SYSENTER_32+0xaf/0x102
Post parse_probe_arg(), the FETCH_OP_DATA operation type is overwritten
to FETCH_OP_ST_STRING, as a result memory is never freed since
traceprobe_free_probe_arg() iterates only over SYMBOL and DATA op types
Setup fetch string operation correctly after fetch_op_data operation.
Link: https://lkml.kernel.org/r/20200615143034.GA1734@cosmos
Cc: stable@vger.kernel.org
Fixes: a42e3c4de964 ("tracing/probe: Add immediate string parameter support")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steven Rostedt (VMware) [Wed, 10 Jun 2020 02:00:41 +0000 (22:00 -0400)]
tracing: Make ftrace packed events have align of 1
commit
4649079b9de1ad86be9f4c989373adb8235a8485 upstream.
When using trace-cmd on 5.6-rt for the function graph tracer, the output was
corrupted. It gave output like this:
funcgraph_entry: func=0xffffffff depth=38982
funcgraph_entry: func=0x1ffffffff depth=16044
funcgraph_exit: func=0xffffffff overrun=0x92539aaf00000000 calltime=0x92539c9900000072 rettime=0x100000072 depth=11084
funcgraph_exit: func=0xffffffff overrun=0x9253946e00000000 calltime=0x92539e2100000072 rettime=0x72 depth=
26033702
funcgraph_entry: func=0xffffffff depth=85798
funcgraph_entry: func=0x1ffffffff depth=12044
The reason was because the tracefs/events/ftrace/funcgraph_entry/exit format
file was incorrect. The -rt kernel adds more common fields to the trace
events. Namely, common_migrate_disable and common_preempt_lazy_count. Each
is one byte in size. This changes the alignment of the normal payload. Most
events are aligned normally, but the function and function graph events are
defined with a "PACKED" macro, that packs their payload. As the offsets
displayed in the format files are now calculated by an aligned field, the
aligned field for function and function graph events should be 1, not their
normal alignment.
With aligning of the funcgraph_entry event, the format file has:
field:unsigned short common_type; offset:0; size:2; signed:0;
field:unsigned char common_flags; offset:2; size:1; signed:0;
field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
field:int common_pid; offset:4; size:4; signed:1;
field:unsigned char common_migrate_disable; offset:8; size:1; signed:0;
field:unsigned char common_preempt_lazy_count; offset:9; size:1; signed:0;
field:unsigned long func; offset:16; size:8; signed:0;
field:int depth; offset:24; size:4; signed:1;
But the actual alignment is:
field:unsigned short common_type; offset:0; size:2; signed:0;
field:unsigned char common_flags; offset:2; size:1; signed:0;
field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
field:int common_pid; offset:4; size:4; signed:1;
field:unsigned char common_migrate_disable; offset:8; size:1; signed:0;
field:unsigned char common_preempt_lazy_count; offset:9; size:1; signed:0;
field:unsigned long func; offset:12; size:8; signed:0;
field:int depth; offset:20; size:4; signed:1;
Link: https://lkml.kernel.org/r/20200609220041.2a3b527f@oasis.local.home
Cc: stable@vger.kernel.org
Fixes: 04ae87a52074e ("ftrace: Rework event_create_dir()")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Biggers [Thu, 4 Jun 2020 18:52:53 +0000 (11:52 -0700)]
crypto: algboss - don't wait during notifier callback
commit
77251e41f89a813b4090f5199442f217bbf11297 upstream.
When a crypto template needs to be instantiated, CRYPTO_MSG_ALG_REQUEST
is sent to crypto_chain. cryptomgr_schedule_probe() handles this by
starting a thread to instantiate the template, then waiting for this
thread to complete via crypto_larval::completion.
This can deadlock because instantiating the template may require loading
modules, and this (apparently depending on userspace) may need to wait
for the crc-t10dif module (lib/crc-t10dif.c) to be loaded. But
crc-t10dif's module_init function uses crypto_register_notifier() and
therefore takes crypto_chain.rwsem for write. That can't proceed until
the notifier callback has finished, as it holds this semaphore for read.
Fix this by removing the wait on crypto_larval::completion from within
cryptomgr_schedule_probe(). It's actually unnecessary because
crypto_alg_mod_lookup() calls crypto_larval_wait() itself after sending
CRYPTO_MSG_ALG_REQUEST.
This only actually became a problem in v4.20 due to commit
b76377543b73
("crc-t10dif: Pick better transform if one becomes available"), but the
unnecessary wait was much older.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207159
Reported-by: Mike Gerow <gerow@google.com>
Fixes: 398710379f51 ("crypto: algapi - Move larval completion into algboss")
Cc: <stable@vger.kernel.org> # v3.6+
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reported-by: Kai Lüke <kai@kinvolk.io>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Herbert Xu [Fri, 29 May 2020 04:54:43 +0000 (14:54 +1000)]
crypto: algif_skcipher - Cap recv SG list at ctx->used
commit
7cf81954705b7e5b057f7dc39a7ded54422ab6e1 upstream.
Somewhere along the line the cap on the SG list length for receive
was lost. This patch restores it and removes the subsequent test
which is now redundant.
Fixes: 2d97591ef43d ("crypto: af_alg - consolidation of...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Swathi Dhanavanthri [Thu, 26 Mar 2020 23:49:55 +0000 (16:49 -0700)]
drm/i915/tgl: Make Wa_14010229206 permanent
commit
63d0f3ea8ebb67160eca281320d255c72b0cb51a upstream.
This workaround now applies to all steppings, not just A0.
Wa_1409085225 is a temporary A0-only W/A however it is
identical to Wa_14010229206 and hence the combined workaround
is made permanent.
Bspec: 52890
Signed-off-by: Swathi Dhanavanthri <swathi.dhanavanthri@intel.com>
Tested-by: Rafael Antognolli <rafael.antognolli@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
[mattrope: added missing blank line]
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200326234955.16155-1-swathi.dhanavanthri@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Harry Wentland [Thu, 28 May 2020 13:44:44 +0000 (09:44 -0400)]
Revert "drm/amd/display: disable dcn20 abm feature for bring up"
commit
14ed1c908a7a623cc0cbf0203f8201d1b7d31d16 upstream.
This reverts commit
96cb7cf13d8530099c256c053648ad576588c387.
This change was used for DCN2 bringup and is no longer desired.
In fact it breaks backlight on DCN2 systems.
Cc: Alexander Monakov <amonakov@ispras.ru>
Cc: Hersen Wu <hersenxs.wu@amd.com>
Cc: Anthony Koo <Anthony.Koo@amd.com>
Cc: Michael Chiu <Michael.Chiu@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reported-and-tested-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Thu, 11 Jun 2020 08:01:40 +0000 (09:01 +0100)]
drm/i915/gt: Move gen4 GT workarounds from init_clock_gating to workarounds
commit
27582a9c917940bc71c0df0b8e022cbde8d735d2 upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so
that we remember to apply them after a GT reset, and that they are
included in our verification that the workarounds are applied.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200611080140.30228-6-chris@chris-wilson.co.uk
(cherry picked from commit
2bcefd0d263ab4a72f0d61921ae6b0dc81606551)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Thu, 11 Jun 2020 08:01:37 +0000 (09:01 +0100)]
drm/i915/gt: Move vlv GT workarounds from init_clock_gating to workarounds
commit
695a2b11649e99bbf15d278042247042c42b8728 upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so
that we remember to apply them after a GT reset, and that they are
included in our verification that the workarounds are applied.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200611080140.30228-3-chris@chris-wilson.co.uk
(cherry picked from commit
7331c356b6d2d8a01422cacab27478a1dba9fa2a)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Thu, 11 Jun 2020 08:01:39 +0000 (09:01 +0100)]
drm/i915/gt: Move ilk GT workarounds from init_clock_gating to workarounds
commit
eacf21040aa97fd1b3c6bb201bfd43820e1c49be upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so
that we remember to apply them after a GT reset, and that they are
included in our verification that the workarounds are applied.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200611080140.30228-5-chris@chris-wilson.co.uk
(cherry picked from commit
806a45c0838d253e306a6384057e851b65d11099)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Thu, 11 Jun 2020 08:01:38 +0000 (09:01 +0100)]
drm/i915/gt: Move snb GT workarounds from init_clock_gating to workarounds
commit
fd2599bda5a989c3332f4956fd7760ec32bd51ee upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so
that we remember to apply them after a GT reset, and that they are
included in our verification that the workarounds are applied.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200611080140.30228-4-chris@chris-wilson.co.uk
(cherry picked from commit
c3b93a943f2c9ee4a106db100a2fc3b2f126bfc5)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Thu, 11 Jun 2020 08:01:36 +0000 (09:01 +0100)]
drm/i915/gt: Move ivb GT workarounds from init_clock_gating to workarounds
commit
7237b190add0794bd95979018a23eda698f2705d upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so
that we remember to apply them after a GT reset, and that they are
included in our verification that the workarounds are applied.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200611080140.30228-2-chris@chris-wilson.co.uk
(cherry picked from commit
19f1f627b33385a2f0855cbc7d33d86d7f4a1e78)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Thu, 11 Jun 2020 09:30:15 +0000 (10:30 +0100)]
drm/i915/gt: Move hsw GT workarounds from init_clock_gating to workarounds
commit
ef50fa9bd17d13d0611e39e13b37bbd3e1ea50bf upstream.
Rescue the GT workarounds from being buried inside init_clock_gating so
that we remember to apply them after a GT reset, and that they are
included in our verification that the workarounds are applied.
v2: Leave HSW_SCRATCH to set an explicit value, not or in our disable
bit.
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2011
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200611093015.11370-1-chris@chris-wilson.co.uk
(cherry picked from commit
f93ec5fb563779bda4501890b1854526de58e0f1)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Tue, 9 Jun 2020 15:17:23 +0000 (16:17 +0100)]
drm/i915/gt: Incrementally check for rewinding
commit
8ab3a3812aa90e488813e719308ffd807b865624 upstream.
In commit
5ba32c7be81e ("drm/i915/execlists: Always force a context
reload when rewinding RING_TAIL"), we placed the check for rewinding a
context on actually submitting the next request in that context. This
was so that we only had to check once, and could do so with precision
avoiding as many forced restores as possible. For example, to ensure
that we can resubmit the same request a couple of times, we include a
small wa_tail such that on the next submission, the ring->tail will
appear to move forwards when resubmitting the same request. This is very
common as it will happen for every lite-restore to fill the second port
after a context switch.
However, intel_ring_direction() is limited in precision to movements of
upto half the ring size. The consequence being that if we tried to
unwind many requests, we could exceed half the ring and flip the sense
of the direction, so missing a force restore. As no request can be
greater than half the ring (i.e. 2048 bytes in the smallest case), we
can check for rollback incrementally. As we check against the tail that
would be submitted, we do not lose any sensitivity and allow lite
restores for the simple case. We still need to double check upon
submitting the context, to allow for multiple preemptions and
resubmissions.
Fixes: 5ba32c7be81e ("drm/i915/execlists: Always force a context reload when rewinding RING_TAIL")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Reviewed-by: Bruce Chang <yu.bruce.chang@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200609151723.12971-1-chris@chris-wilson.co.uk
(cherry picked from commit
e36ba817fa966f81fb1c8d16f3721b5a644b2fa9)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Khaled Almahallawy [Mon, 8 Jun 2020 20:45:37 +0000 (13:45 -0700)]
drm/i915/tc: fix the reset of ln0
commit
a43555ac908c604f45ed98628805aec9355b9737 upstream.
Setting ln0 similar to ln1
Fixes: 3b51be4e4061b ("drm/i915/tc: Update DP_MODE programming")
Cc: <stable@vger.kernel.org> # v5.5+
Signed-off-by: Khaled Almahallawy <khaled.almahallawy@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200608204537.28468-1-khaled.almahallawy@intel.com
(cherry picked from commit
4f72a8ee819d57d7329d88f487a2fc9b45153177)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Imre Deak [Fri, 12 Jun 2020 12:17:31 +0000 (15:17 +0300)]
drm/i915/icl+: Fix hotplug interrupt disabling after storm detection
commit
a3005c2edf7e8c3478880db1ca84028a2b6819bb upstream.
Atm, hotplug interrupts on TypeC ports are left enabled after detecting
an interrupt storm, fix this.
Reported-by: Kunal Joshi <kunal1.joshi@intel.com>
References: https://gitlab.freedesktop.org/drm/intel/-/issues/351
Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/1964
Cc: Kunal Joshi <kunal1.joshi@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200612121731.19596-1-imre.deak@intel.com
(cherry picked from commit
587a87b9d7e94927edcdea018565bc1939381eb1)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Denis Efremov [Fri, 5 Jun 2020 17:37:43 +0000 (20:37 +0300)]
drm/amd/display: Use kvfree() to free coeff in build_regamma()
commit
81921a828b94ce2816932c19a5ec74d302972833 upstream.
Use kvfree() instead of kfree() to free coeff in build_regamma()
because the memory is allocated with kvzalloc().
Fixes: e752058b8671 ("drm/amd/display: Optimize gamma calculations")
Cc: stable@vger.kernel.org
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lorenz Brun [Thu, 11 Jun 2020 20:11:21 +0000 (22:11 +0200)]
drm/amdkfd: Use correct major in devcgroup check
commit
99c7b309472787026ce52fd2bc5d00630567a872 upstream.
The existing code used the major version number of the DRM driver
instead of the device major number of the DRM subsystem for
validating access for a devices cgroup.
This meant that accesses allowed by the devices cgroup weren't
permitted and certain accesses denied by the devices cgroup were
permitted (if they matched the wrong major device number).
Signed-off-by: Lorenz Brun <lorenz@brun.one>
Fixes: 6b855f7b83d2f ("drm/amdkfd: Check against device cgroup")
Reviewed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jeykumar Sankaran [Wed, 3 Jun 2020 03:37:31 +0000 (20:37 -0700)]
drm/connector: notify userspace on hotplug after register complete
commit
968d81a64a883af2d16dd3f8a6ad6b67db2fde58 upstream.
drm connector notifies userspace on hotplug event prematurely before
late_register and mode_object register completes. This leads to a race
between userspace and kernel on updating the IDR list. So, move the
notification to end of connector register.
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Steve Cohen <cohens@codeaurora.org>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1591155451-10393-1-git-send-email-jsanka@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Mon, 1 Jun 2020 16:19:42 +0000 (17:19 +0100)]
drm/i915: Whitelist context-local timestamp in the gen9 cmdparser
commit
273500ae71711c040d258a7b3f4b6f44c368fff2 upstream.
Allow batch buffers to read their own _local_ cumulative HW runtime of
their logical context.
Fixes: 0f2f39758341 ("drm/i915: Add gen9 BCS cmdparsing")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200601161942.30854-1-chris@chris-wilson.co.uk
(cherry picked from commit
f9496520df11de00fbafc3cbd693b9570d600ab3)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Wilson [Fri, 22 May 2020 13:27:06 +0000 (14:27 +0100)]
drm/i915/gem: Avoid iterating an empty list
commit
757a9395f33c51c4e6eff2c7c0fbd50226a58224 upstream.
Our __sgt_iter assumes that the scattergather list has at least one
element. But during construction we may fail in allocating the first
page, and so mark the first element as the terminator. This is
unexpected!
[22555.524752] RIP: 0010:shmem_get_pages+0x506/0x710 [i915]
[22555.524759] Code: 49 8b 2c 24 31 c0 66 89 44 24 40 48 85 ed 0f 84 62 01 00 00 4c 8b 75 00 8b 5d 08 44 8b 7d 0c 48 8b 0d 7e 34 07 e2 49 83 e6 fc <49> 8b 16 41 01 df 48 89 cf 48 89 d0 48 c1 e8 2d 48 85 c9 0f 84 c8
[22555.524765] RSP: 0018:
ffffc9000053f9d0 EFLAGS:
00010246
[22555.524770] RAX:
0000000000000000 RBX:
0000000000000000 RCX:
ffff8881ffffa000
[22555.524774] RDX:
fffffffffffffff4 RSI:
ffffffffffffffff RDI:
ffffffff821efe00
[22555.524778] RBP:
ffff8881b099ab00 R08:
0000000000000000 R09:
00000000fffffff4
[22555.524782] R10:
0000000000000002 R11:
00000000ffec0a02 R12:
ffff8881cd3c8d60
[22555.524786] R13:
00000000fffffff4 R14:
0000000000000000 R15:
0000000000000000
[22555.524790] FS:
00007f4fbeb9b9c0(0000) GS:
ffff8881f8580000(0000) knlGS:
0000000000000000
[22555.524795] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[22555.524799] CR2:
0000000000000000 CR3:
00000001ec7f0004 CR4:
00000000001606e0
[22555.524803] Call Trace:
[22555.524919] __i915_gem_object_get_pages+0x4f/0x60 [i915]
Fixes: 85d1225ec066 ("drm/i915: Introduce & use new lightweight SGL iterators")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <stable@vger.kernel.org> # v4.8+
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200522132706.5133-1-chris@chris-wilson.co.uk
(cherry picked from commit
957ad9a02be6faa87594c58ac09460cd3d190d0e)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jordan Crouse [Fri, 1 May 2020 19:43:26 +0000 (13:43 -0600)]
drm/msm: Check for powered down HW in the devfreq callbacks
commit
eadf79286a4badebc95af7061530bdb50a7e6f38 upstream.
Writing to the devfreq sysfs nodes while the GPU is powered down can
result in a system crash (on a5xx) or a nasty GMU error (on a6xx):
$ /sys/class/devfreq/
5000000.gpu# echo
500000000 > min_freq
[ 104.841625] platform
506a000.gmu: [drm:a6xx_gmu_set_oob]
*ERROR* Timeout waiting for GMU OOB set GPU_DCVS: 0x0
Despite the fact that we carefully try to suspend the devfreq device when
the hardware is powered down there are lots of holes in the governors that
don't check for the suspend state and blindly call into the devfreq
callbacks that end up triggering hardware reads in the GPU driver.
Call pm_runtime_get_if_in_use() in the gpu_busy() and gpu_set_freq()
callbacks to skip the hardware access if it isn't active.
v3: Only check pm_runtime_get_if_in_use() for == 0 per Eric Anholt
v2: Use pm_runtime_get_if_in_use() per Eric Anholt
Cc: stable@vger.kernel.org
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Imre Deak [Thu, 14 May 2020 20:45:53 +0000 (23:45 +0300)]
drm/i915: Fix AUX power domain toggling across TypeC mode resets
commit
d96536f0fe699729a0974eb5b65eb0d87cc747e1 upstream.
Make sure to select the port's AUX power domain while holding the TC
port lock. The domain depends on the port's current TC mode, which may
get changed under us if we're not holding the lock.
This was left out from
commit
8c10e2262663 ("drm/i915: Keep the TypeC port mode fixed for detect/AUX transfers")
Cc: <stable@vger.kernel.org> # v5.4+
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200514204553.27193-1-imre.deak@intel.com
(cherry picked from commit
ae9b6cfe1352da25931bce3ea4acfd4dc1ac8a85)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dmitry V. Levin [Tue, 2 Jun 2020 18:00:51 +0000 (21:00 +0300)]
s390: fix syscall_get_error for compat processes
commit
b3583fca5fb654af2cfc1c08259abb9728272538 upstream.
If both the tracer and the tracee are compat processes, and gprs[2]
is assigned a value by __poke_user_compat, then the higher 32 bits
of gprs[2] are cleared, IS_ERR_VALUE() always returns false, and
syscall_get_error() always returns 0.
Fix the implementation by sign-extending the value for compat processes
the same way as x86 implementation does.
The bug was exposed to user space by commit
201766a20e30f ("ptrace: add
PTRACE_GET_SYSCALL_INFO request") and detected by strace test suite.
This change fixes strace syscall tampering on s390.
Link: https://lkml.kernel.org/r/20200602180051.GA2427@altlinux.org
Fixes: 753c4dd6a2fa2 ("[S390] ptrace changes")
Cc: Elvira Khabirova <lineprinter@altlinux.org>
Cc: stable@vger.kernel.org # v2.6.28+
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Biggers [Mon, 1 Jun 2020 20:08:05 +0000 (13:08 -0700)]
f2fs: avoid utf8_strncasecmp() with unstable name
[ Upstream commit
fc3bb095ab02b9e7d89a069ade2cead15c64c504 ]
If the dentry name passed to ->d_compare() fits in dentry::d_iname, then
it may be concurrently modified by a rename. This can cause undefined
behavior (possibly out-of-bounds memory accesses or crashes) in
utf8_strncasecmp(), since fs/unicode/ isn't written to handle strings
that may be concurrently modified.
Fix this by first copying the filename to a stack buffer if needed.
This way we get a stable snapshot of the filename.
Fixes: 2c2eb7a300cd ("f2fs: Support case-insensitive file name lookups")
Cc: <stable@vger.kernel.org> # v5.4+
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Daniel Rosenberg <drosen@google.com>
Cc: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Eric Biggers [Thu, 7 May 2020 07:59:03 +0000 (00:59 -0700)]
f2fs: split f2fs_d_compare() from f2fs_match_name()
[ Upstream commit
f874fa1c7c7905c1744a2037a11516558ed00a81 ]
Sharing f2fs_ci_compare() between comparing cached dentries
(f2fs_d_compare()) and comparing on-disk dentries (f2fs_match_name())
doesn't work as well as intended, as these actions fundamentally differ
in several ways (e.g. whether the task may sleep, whether the directory
is stable, whether the casefolded name was precomputed, whether the
dentry will need to be decrypted once we allow casefold+encrypt, etc.)
Just make f2fs_d_compare() implement what it needs directly, and rework
f2fs_ci_compare() to be specialized for f2fs_match_name().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Denis Efremov [Mon, 1 Jun 2020 16:45:26 +0000 (19:45 +0300)]
net/mlx5: DR, Fix freeing in dr_create_rc_qp()
[ Upstream commit
47a357de2b6b706af3c9471d5042f9ba8907031e ]
Variable "in" in dr_create_rc_qp() is allocated with kvzalloc() and
should be freed with kvfree().
Fixes: 297cccebdc5a ("net/mlx5: DR, Expose an internal API to issue RDMA operations")
Cc: stable@vger.kernel.org
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Lyude Paul [Fri, 3 Apr 2020 19:47:15 +0000 (15:47 -0400)]
drm/dp_mst: Increase ACT retry timeout to 3s
[ Upstream commit
873a95e0d59ac06901ae261dda0b7165ffd002b8 ]
Currently we only poll for an ACT up to 30 times, with a busy-wait delay
of 100µs between each attempt - giving us a timeout of 2900µs. While
this might seem sensible, it would appear that in certain scenarios it
can take dramatically longer then that for us to receive an ACT. On one
of the EVGA MST hubs that I have available, I observed said hub
sometimes taking longer then a second before signalling the ACT. These
delays mostly seem to occur when previous sideband messages we've sent
are NAKd by the hub, however it wouldn't be particularly surprising if
it's possible to reproduce times like this simply by introducing branch
devices with large LCTs since payload allocations have to take effect on
every downstream device up to the payload's target.
So, instead of just retrying 30 times we poll for the ACT for up to 3ms,
and additionally use usleep_range() to avoid a very long and rude
busy-wait. Note that the previous retry count of 30 appears to have been
arbitrarily chosen, as I can't find any mention of a recommended timeout
or retry count for ACTs in the DisplayPort 2.0 specification. This also
goes for the range we were previously using for udelay(), although I
suspect that was just copied from the recommended delay for link
training on SST devices.
Changes since v1:
* Use readx_poll_timeout() instead of open-coding timeout loop - Sean
Paul
Changes since v2:
* Increase poll interval to 200us - Sean Paul
* Print status in hex when we timeout waiting for ACT - Sean Paul
Signed-off-by: Lyude Paul <lyude@redhat.com>
Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
Cc: Sean Paul <sean@poorly.run>
Cc: <stable@vger.kernel.org> # v3.17+
Reviewed-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20200406221253.1307209-4-lyude@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Theodore Ts'o [Wed, 10 Jun 2020 15:16:37 +0000 (11:16 -0400)]
ext4: avoid race conditions when remounting with options that change dax
[ Upstream commit
829b37b8cddb1db75c1b7905505b90e593b15db1 ]
Trying to change dax mount options when remounting could allow mount
options to be enabled for a small amount of time, and then the mount
option change would be reverted.
In the case of "mount -o remount,dax", this can cause a race where
files would temporarily treated as DAX --- and then not.
Cc: stable@kernel.org
Reported-by: syzbot+bca9799bf129256190da@syzkaller.appspotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Xiaoguang Wang [Thu, 18 Jun 2020 07:01:56 +0000 (15:01 +0800)]
io_uring: fix possible race condition against REQ_F_NEED_CLEANUP
[ Upstream commit
6f2cc1664db20676069cff27a461ccc97dbfd114 ]
In io_read() or io_write(), when io request is submitted successfully,
it'll go through the below sequence:
kfree(iovec);
req->flags &= ~REQ_F_NEED_CLEANUP;
return ret;
But clearing REQ_F_NEED_CLEANUP might be unsafe. The io request may
already have been completed, and then io_complete_rw_iopoll()
and io_complete_rw() will be called, both of which will also modify
req->flags if needed. This causes a race condition, with concurrent
non-atomic modification of req->flags.
To eliminate this race, in io_read() or io_write(), if io request is
submitted successfully, we don't remove REQ_F_NEED_CLEANUP flag. If
REQ_F_NEED_CLEANUP is set, we'll leave __io_req_aux_free() to the
iovec cleanup work correspondingly.
Cc: stable@vger.kernel.org
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jens Axboe [Wed, 17 Jun 2020 21:00:04 +0000 (15:00 -0600)]
io_uring: reap poll completions while waiting for refs to drop on exit
[ Upstream commit
56952e91acc93ed624fe9da840900defb75f1323 ]
If we're doing polled IO and end up having requests being submitted
async, then completions can come in while we're waiting for refs to
drop. We need to reap these manually, as nobody else will be looking
for them.
Break the wait into 1/20th of a second time waits, and check for done
poll completions if we time out. Otherwise we can have done poll
completions sitting in ctx->poll_list, which needs us to reap them but
we're just waiting for them.
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jens Axboe [Wed, 17 Jun 2020 00:42:49 +0000 (18:42 -0600)]
io_uring: acquire 'mm' for task_work for SQPOLL
[ Upstream commit
9d8426a09195e2dcf2aa249de2aaadd792d491c7 ]
If we're unlucky with timing, we could be running task_work after
having dropped the memory context in the sq thread. Since dropping
the context requires a runnable task state, we cannot reliably drop
it as part of our check-for-work loop in io_sq_thread(). Instead,
abstract out the mm acquire for the sq thread into a helper, and call
it from the async task work handler.
Cc: stable@vger.kernel.org # v5.7
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Xiaoguang Wang [Mon, 15 Jun 2020 18:06:38 +0000 (02:06 +0800)]
io_uring: add memory barrier to synchronize io_kiocb's result and iopoll_completed
[ Upstream commit
bbde017a32b32d2fa8d5fddca25fade20132abf8 ]
In io_complete_rw_iopoll(), stores to io_kiocb's result and iopoll
completed are two independent store operations, to ensure that once
iopoll_completed is ture and then req->result must been perceived by
the cpu executing io_do_iopoll(), proper memory barrier should be used.
And in io_do_iopoll(), we check whether req->result is EAGAIN, if it is,
we'll need to issue this io request using io-wq again. In order to just
issue a single smp_rmb() on the completion side, move the re-submit work
to io_iopoll_complete().
Cc: stable@vger.kernel.org
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
[axboe: don't set ->iopoll_completed for -EAGAIN retry]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Xiaoguang Wang [Mon, 15 Jun 2020 18:06:37 +0000 (02:06 +0800)]
io_uring: don't fail links for EAGAIN error in IOPOLL mode
[ Upstream commit
2d7d67920e5c8e0854df23ca77da2dd5880ce5dd ]
In IOPOLL mode, for EAGAIN error, we'll try to submit io request
again using io-wq, so don't fail rest of links if this io request
has links.
Cc: stable@vger.kernel.org
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Xiaoguang Wang [Thu, 11 Jun 2020 15:39:36 +0000 (23:39 +0800)]
io_uring: fix io_kiocb.flags modification race in IOPOLL mode
[ Upstream commit
65a6543da386838f935d2f03f452c5c0acff2a68 ]
While testing io_uring in arm, we found sometimes io_sq_thread() keeps
polling io requests even though there are not inflight io requests in
block layer. After some investigations, found a possible race about
io_kiocb.flags, see below race codes:
1) in the end of io_write() or io_read()
req->flags &= ~REQ_F_NEED_CLEANUP;
kfree(iovec);
return ret;
2) in io_complete_rw_iopoll()
if (res != -EAGAIN)
req->flags |= REQ_F_IOPOLL_COMPLETED;
In IOPOLL mode, io requests still maybe completed by interrupt, then
above codes are not safe, concurrent modifications to req->flags, which
is not protected by lock or is not atomic modifications. I also had
disassemble io_complete_rw_iopoll() in arm:
req->flags |= REQ_F_IOPOLL_COMPLETED;
0xffff000008387b18 <+76>: ldr w0, [x19,#104]
0xffff000008387b1c <+80>: orr w0, w0, #0x1000
0xffff000008387b20 <+84>: str w0, [x19,#104]
Seems that the "req->flags |= REQ_F_IOPOLL_COMPLETED;" is load and
modification, two instructions, which obviously is not atomic.
To fix this issue, add a new iopoll_completed in io_kiocb to indicate
whether io request is completed.
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Zimmermann [Thu, 7 May 2020 09:06:40 +0000 (11:06 +0200)]
drm/ast: Don't check new mode if CRTC is being disabled
commit
d6ddbd5c97d1b9156646ac5c42b8851edd664ee2 upstream.
Suspending failed because there's no mode if the CRTC is being
disabled. Early-out in this case. This fixes runtime PM for ast.
v3:
* fixed commit message
v2:
* added Tested-by/Reported-by tags
* added Fixes tags and CC (Sam)
* improved comment
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reported-by: Cary Garrett <cogarre@gmail.com>
Tested-by: Cary Garrett <cogarre@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: b48e1b6ffd28 ("drm/ast: Add CRTC helpers for atomic modesetting")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: <stable@vger.kernel.org> # v5.6+
Link: https://patchwork.freedesktop.org/patch/msgid/20200507090640.21561-1-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tom Rix [Wed, 17 Jun 2020 12:40:28 +0000 (05:40 -0700)]
selinux: fix undefined return of cond_evaluate_expr
commit
8231b0b9c322c894594fb42eb0eb9f93544a6acc upstream.
clang static analysis reports an undefined return
security/selinux/ss/conditional.c:79:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn]
return s[0];
^~~~~~~~~~~
static int cond_evaluate_expr( ...
{
u32 i;
int s[COND_EXPR_MAXDEPTH];
for (i = 0; i < expr->len; i++)
...
return s[0];
When expr->len is 0, the loop which sets s[0] never runs.
So return -1 if the loop never runs.
Cc: stable@vger.kernel.org
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tom Rix [Mon, 15 Jun 2020 20:45:48 +0000 (13:45 -0700)]
selinux: fix a double free in cond_read_node()/cond_read_list()
commit
aa449a7965a6172a89d48844c313708962216f1f upstream.
Clang static analysis reports this double free error
security/selinux/ss/conditional.c:139:2: warning: Attempt to free released memory [unix.Malloc]
kfree(node->expr.nodes);
^~~~~~~~~~~~~~~~~~~~~~~
When cond_read_node fails, it calls cond_node_destroy which frees the
node but does not poison the entry in the node list. So when it
returns to its caller cond_read_list, cond_read_list deletes the
partial list. The latest entry in the list will be deleted twice.
So instead of freeing the node in cond_read_node, let list freeing in
code_read_list handle the freeing the problem node along with all of the
earlier nodes.
Because cond_read_node no longer does any error handling, the goto's
the error case are redundant. Instead just return the error code.
Cc: stable@vger.kernel.org
Fixes: 60abd3181db2 ("selinux: convert cond_list to array")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Ondrej Mosnacek <omosnace@redhat.com>
[PM: subject line tweaks]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tom Rix [Wed, 10 Jun 2020 21:57:13 +0000 (14:57 -0700)]
selinux: fix double free
commit
65de50969a77509452ae590e9449b70a22b923bb upstream.
Clang's static analysis tool reports these double free memory errors.
security/selinux/ss/services.c:2987:4: warning: Attempt to free released memory [unix.Malloc]
kfree(bnames[i]);
^~~~~~~~~~~~~~~~
security/selinux/ss/services.c:2990:2: warning: Attempt to free released memory [unix.Malloc]
kfree(bvalues);
^~~~~~~~~~~~~~
So improve the security_get_bools error handling by freeing these variables
and setting their return pointers to NULL and the return len to 0
Cc: stable@vger.kernel.org
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sandeep Raghuraman [Wed, 10 Jun 2020 20:06:26 +0000 (01:36 +0530)]
drm/amdgpu: Replace invalid device ID with a valid device ID
commit
790243d3bf78f9830a3b2ffbca1ed0f528295d48 upstream.
Initializes Powertune data for a specific Hawaii card by fixing what
looks like a typo in the code. The device ID 66B1 is not a supported
device ID for this driver, and is not mentioned elsewhere. 67B1 is a
valid device ID, and is a Hawaii Pro GPU.
I have tested on my R9 390 which has device ID 67B1, and it works
fine without problems.
Signed-off-by: Sandeep Raghuraman <sandy.8925@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Tue, 2 Jun 2020 21:22:48 +0000 (17:22 -0400)]
drm/amdgpu/display: use blanked rather than plane state for sync groups
commit
b7f839d292948142eaab77cedd031aad0bfec872 upstream.
We may end up with no planes set yet, depending on the ordering, but we
should have the proper blanking state which is either handled by either
DPG or TG depending on the hardware generation. Check both to determine
the proper blanked state.
Bug: https://gitlab.freedesktop.org/drm/amd/issues/781
Fixes: 5fc0cbfad45648 ("drm/amd/display: determine if a pipe is synced by plane state")
Cc: nicholas.kazlauskas@amd.com
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huacai Chen [Tue, 31 Mar 2020 06:18:08 +0000 (14:18 +0800)]
drm/qxl: Use correct notify port address when creating cursor ring
commit
80e5f89da3ab949fbbf1cae01dfaea29f5483a75 upstream.
The command ring and cursor ring use different notify port addresses
definition: QXL_IO_NOTIFY_CMD and QXL_IO_NOTIFY_CURSOR. However, in
qxl_device_init() we use QXL_IO_NOTIFY_CMD to create both command ring
and cursor ring. This doesn't cause any problems now, because QEMU's
behaviors on QXL_IO_NOTIFY_CMD and QXL_IO_NOTIFY_CURSOR are the same.
However, QEMU's behavior may be change in future, so let's fix it.
P.S.: In the X.org QXL driver, the notify port address of cursor ring
is correct.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: <stable@vger.kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1585635488-17507-1-git-send-email-chenhc@lemote.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lyude Paul [Fri, 3 Apr 2020 18:08:32 +0000 (14:08 -0400)]
drm/dp_mst: Reformat drm_dp_check_act_status() a bit
commit
a5cb5fa6c3a5c2cf492db667b8670ee7b044b79f upstream.
Just add a bit more line wrapping, get rid of some extraneous
whitespace, remove an unneeded goto label, and move around some variable
declarations. No functional changes here.
Signed-off-by: Lyude Paul <lyude@redhat.com>
[this isn't a fix, but it's needed for the fix that comes after this]
Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
Cc: Sean Paul <sean@poorly.run>
Cc: <stable@vger.kernel.org> # v3.17+
Reviewed-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20200406221253.1307209-3-lyude@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Thu, 16 Apr 2020 07:54:28 +0000 (09:54 +0200)]
drm/nouveau/kms: Fix regression by audio component transition
commit
61a41097e4bd4bf5d4abf3b3b58d5bf0856ce144 upstream.
Since the commit
742db30c4ee6 ("drm/nouveau: Add HD-audio component
notifier support"), the nouveau driver notifies and pokes the HD-audio
HPD and ELD via audio component, but this seems broken. The culprit
is the naive assumption that crtc->index corresponds to the HDA pin.
Actually this rather corresponds to the MST dev_id (alias "pipe" in
the audio component framework) while the actual port number is given
from the output ior id number.
This patch corrects the assignment of port and dev_id arguments in the
audio component ops to recover from the HDMI/DP audio regression.
Fixes: 742db30c4ee6 ("drm/nouveau: Add HD-audio component notifier support")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207223
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kuninori Morimoto [Mon, 20 Jan 2020 01:22:17 +0000 (10:22 +0900)]
sh: Convert iounmap() macros to inline functions
commit
4580ba4ad2e6b8ddaada3db61d179d4dfac12047 upstream.
Macro iounmap() do nothing, but that results in
unused variable warnings all over the place.
This patch convert it to inline to avoid warning
We will get this warning without this patch
${LINUX}/drivers/thermal/broadcom/ns-thermal.c:78:21: \
warning: unused variable 'ns_thermal' [-Wunused-variable]
struct ns_thermal *ns_thermal = platform_get_drvdata(pdev);
^~~~~~~~~~
Fixes: 98c90e5ea34e9 ("sh: remove __iounmap")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Rich Felker <dalias@libc.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andreas Färber [Sat, 30 Nov 2019 18:20:53 +0000 (19:20 +0100)]
arm64: dts: realtek: rtd129x: Carve out boot ROM from memory
commit
3040e132beda2aee56e6ea9be8db69889bcb2e7a upstream.
Update DS418j, MeLE V9, PROBOX2 AVA, Zidoo X9S and DS418 /memory nodes
to exclude 0..0x1efff from reg entry and update unit address to match.
Add this region to /soc ranges and for now just update the /memreserve/s.
Suggested-by: Rob Herring <robh@kernel.org>
Fixes: 72a7786c0a0d ("ARM64: dts: Add Realtek RTD1295 and Zidoo X9S")
Fixes: d938a964a966 ("arm64: dts: realtek: Add ProBox2 Ava")
Fixes: a9ce6f854581 ("arm64: dts: realtek: Add MeLE V9")
Fixes: cf976f660ee8 ("arm64: dts: realtek: Add RTD1293 and Synology DS418j")
Fixes: 5133636e41a2 ("arm64: dts: realtek: Add RTD1296 and Synology DS418")
Cc: James Tai <james.tai@realtek.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andreas Färber [Sun, 10 Nov 2019 06:02:43 +0000 (07:02 +0100)]
arm64: dts: realtek: rtd129x: Use reserved-memory for RPC regions
commit
690677c22d5fa5dfdaa609a1739b75fdfb1c4a24 upstream.
Move /reserved-memory node from RTD1295 to RTD129x DT.
Convert RPC /memreserve/s into /reserved-memory nodes.
Fixes: 72a7786c0a0d ("ARM64: dts: Add Realtek RTD1295 and Zidoo X9S")
Fixes: f8b3436dad5c ("arm64: dts: realtek: Factor out common RTD129x parts")
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
zhangyi (F) [Tue, 9 Jun 2020 07:35:40 +0000 (15:35 +0800)]
ext4, jbd2: ensure panic by fix a race between jbd2 abort and ext4 error handlers
commit
7b97d868b7ab2448859668de9222b8af43f76e78 upstream.
In the ext4 filesystem with errors=panic, if one process is recording
errno in the superblock when invoking jbd2_journal_abort() due to some
error cases, it could be raced by another __ext4_abort() which is
setting the SB_RDONLY flag but missing panic because errno has not been
recorded.
jbd2_journal_commit_transaction()
jbd2_journal_abort()
journal->j_flags |= JBD2_ABORT;
jbd2_journal_update_sb_errno()
| ext4_journal_check_start()
| __ext4_abort()
| sb->s_flags |= SB_RDONLY;
| if (!JBD2_REC_ERR)
| return;
journal->j_flags |= JBD2_REC_ERR;
Finally, it will no longer trigger panic because the filesystem has
already been set read-only. Fix this by introduce j_abort_mutex to make
sure journal abort is completed before panic, and remove JBD2_REC_ERR
flag.
Fixes: 4327ba52afd03 ("ext4, jbd2: ensure entering into panic after recording an error in superblock")
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200609073540.3810702-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Biggers [Mon, 1 Jun 2020 20:05:43 +0000 (13:05 -0700)]
ext4: avoid utf8_strncasecmp() with unstable name
commit
2ce3ee931a097e9720310db3f09c01c825a4580c upstream.
If the dentry name passed to ->d_compare() fits in dentry::d_iname, then
it may be concurrently modified by a rename. This can cause undefined
behavior (possibly out-of-bounds memory accesses or crashes) in
utf8_strncasecmp(), since fs/unicode/ isn't written to handle strings
that may be concurrently modified.
Fix this by first copying the filename to a stack buffer if needed.
This way we get a stable snapshot of the filename.
Fixes: b886ee3e778e ("ext4: Support case-insensitive file name lookups")
Cc: <stable@vger.kernel.org> # v5.2+
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Daniel Rosenberg <drosen@google.com>
Cc: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20200601200543.59417-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jeffle Xu [Fri, 22 May 2020 04:18:44 +0000 (12:18 +0800)]
ext4: fix partial cluster initialization when splitting extent
commit
cfb3c85a600c6aa25a2581b3c1c4db3460f14e46 upstream.
Fix the bug when calculating the physical block number of the first
block in the split extent.
This bug will cause xfstests shared/298 failure on ext4 with bigalloc
enabled occasionally. Ext4 error messages indicate that previously freed
blocks are being freed again, and the following fsck will fail due to
the inconsistency of block bitmap and bg descriptor.
The following is an example case:
1. First, Initialize a ext4 filesystem with cluster size '16K', block size
'4K', in which case, one cluster contains four blocks.
2. Create one file (e.g., xxx.img) on this ext4 filesystem. Now the extent
tree of this file is like:
...
36864:[0]4:220160
36868:[0]14332:145408
51200:[0]2:231424
...
3. Then execute PUNCH_HOLE fallocate on this file. The hole range is
like:
..
ext4_ext_remove_space: dev 254,16 ino 12 since 49506 end 49506 depth 1
ext4_ext_remove_space: dev 254,16 ino 12 since 49544 end 49546 depth 1
ext4_ext_remove_space: dev 254,16 ino 12 since 49605 end 49607 depth 1
...
4. Then the extent tree of this file after punching is like
...
49507:[0]37:158047
49547:[0]58:158087
...
5. Detailed procedure of punching hole [49544, 49546]
5.1. The block address space:
```
lblk ~49505 49506 49507~49543 49544~49546 49547~
---------+------+-------------+----------------+--------
extent | hole | extent | hole | extent
---------+------+-------------+----------------+--------
pblk ~158045 158046 158047~158083 158084~158086 158087~
```
5.2. The detailed layout of cluster 39521:
```
cluster 39521
<------------------------------->
hole extent
<----------------------><--------
lblk 49544 49545 49546 49547
+-------+-------+-------+-------+
| | | | |
+-------+-------+-------+-------+
pblk 158084
1580845 158086 158087
```
5.3. The ftrace output when punching hole [49544, 49546]:
- ext4_ext_remove_space (start 49544, end 49546)
- ext4_ext_rm_leaf (start 49544, end 49546, last_extent [49507(158047), 40], partial [pclu 39522 lblk 0 state 2])
- ext4_remove_blocks (extent [49507(158047), 40], from 49544 to 49546, partial [pclu 39522 lblk 0 state 2]
- ext4_free_blocks: (block 158084 count 4)
- ext4_mballoc_free (extent 1/6753/1)
5.4. Ext4 error message in dmesg:
EXT4-fs error (device vdb): mb_free_blocks:1457: group 1, block 158084:freeing already freed block (bit 6753); block bitmap corrupt.
EXT4-fs error (device vdb): ext4_mb_generate_buddy:747: group 1, block bitmap and bg descriptor inconsistent: 19550 vs 19551 free clusters
In this case, the whole cluster 39521 is freed mistakenly when freeing
pblock 158084~158086 (i.e., the first three blocks of this cluster),
although pblock 158087 (the last remaining block of this cluster) has
not been freed yet.
The root cause of this isuue is that, the pclu of the partial cluster is
calculated mistakenly in ext4_ext_remove_space(). The correct
partial_cluster.pclu (i.e., the cluster number of the first block in the
next extent, that is, lblock 49597 (pblock 158086)) should be 39521 rather
than 39522.
Fixes: f4226d9ea400 ("ext4: fix partial cluster initialization")
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Eric Whitney <enwlinux@gmail.com>
Cc: stable@kernel.org # v3.19+
Link: https://lore.kernel.org/r/1590121124-37096-1-git-send-email-jefflexu@linux.alibaba.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sivaprakash Murugesan [Fri, 19 Jun 2020 04:31:29 +0000 (10:01 +0530)]
pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
[ Upstream commit
7f5f4de83ca30a4922bb178b80144e2778faad01 ]
The patch adds missing qpic data pins to qpic pingroup. These pins are
necessary for the qpic nand to work.
Fixes: ef1ea54eab0e ("pinctrl: qcom: Add ipq6018 pinctrl driver")
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Link: https://lore.kernel.org/r/1592541089-17700-1-git-send-email-sivaprak@codeaurora.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Wolfram Sang [Mon, 15 Jun 2020 07:58:10 +0000 (09:58 +0200)]
drm: encoder_slave: fix refcouting error for modules
[ Upstream commit
f78d4032de60f50fd4afaa0fb68ea03b985f820a ]
module_put() balances try_module_get(), not request_module(). Fix the
error path to match that.
Fixes: 2066facca4c7 ("drm/kms: slave encoder interface.")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Kai-Heng Feng [Wed, 3 Jun 2020 07:48:19 +0000 (15:48 +0800)]
libata: Use per port sync for detach
[ Upstream commit
b5292111de9bb70cba3489075970889765302136 ]
Commit
130f4caf145c ("libata: Ensure ata_port probe has completed before
detach") may cause system freeze during suspend.
Using async_synchronize_full() in PM callbacks is wrong, since async
callbacks that are already scheduled may wait for not-yet-scheduled
callbacks, causes a circular dependency.
Instead of using big hammer like async_synchronize_full(), use async
cookie to make sure port probe are synced, without affecting other
scheduled PM callbacks.
Fixes: 130f4caf145c ("libata: Ensure ata_port probe has completed before detach")
Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: John Garry <john.garry@huawei.com>
BugLink: https://bugs.launchpad.net/bugs/1867983
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Will Deacon [Fri, 29 May 2020 13:12:18 +0000 (14:12 +0100)]
arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
[ Upstream commit
24ebec25fb270100e252b19c288e21bd7d8cc7f7 ]
Unprivileged memory accesses generated by the so-called "translated"
instructions (e.g. STTR) at EL1 can cause EL0 watchpoints to fire
unexpectedly if kernel debugging is enabled. In such cases, the
hw_breakpoint logic will invoke the user overflow handler which will
typically raise a SIGTRAP back to the current task. This is futile when
returning back to the kernel because (a) the signal won't have been
delivered and (b) userspace can't handle the thing anyway.
Avoid invoking the user overflow handler for watchpoints triggered by
kernel uaccess routines, and instead single-step over the faulting
instruction as we would if no overflow handler had been installed.
(Fixes tag identifies the introduction of unprivileged memory accesses,
which exposed this latent bug in the hw_breakpoint code)
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Fixes: 57f4959bad0a ("arm64: kernel: Add support for User Access Override")
Reported-by: Luis Machado <luis.machado@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Barry Song [Wed, 17 Jun 2020 21:58:28 +0000 (09:58 +1200)]
arm64: mm: reserve hugetlb CMA after numa_init
[ Upstream commit
618e07865b7453d02410c1f3407c2d78a670eabb ]
hugetlb_cma_reserve() is called at the wrong place. numa_init has not been
done yet. so all reserved memory will be located at node0.
Fixes: cf11e85fc08c ("mm: hugetlb: optionally allocate gigantic hugepages using cma")
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20200617215828.25296-1-song.bao.hua@hisilicon.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Ido Schimmel [Tue, 16 Jun 2020 07:14:58 +0000 (10:14 +0300)]
mlxsw: spectrum: Adjust headroom buffers for 8x ports
[ Upstream commit
60833d54d56c21e7538296eb2e00e104768fd047 ]
The port's headroom buffers are used to store packets while they
traverse the device's pipeline and also to store packets that are egress
mirrored.
On Spectrum-3, ports with eight lanes use two headroom buffers between
which the configured headroom size is split.
In order to prevent packet loss, multiply the calculated headroom size
by two for 8x ports.
Fixes: da382875c616 ("mlxsw: spectrum: Extend to support Spectrum-3 ASIC")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
projects / wrapfs-4.13.y.git / log