Maxime Ripard [Fri, 25 Sep 2015 16:09:35 +0000 (18:09 +0200)]
net: mvneta: Fix CPU_MAP registers initialisation
commit
2502d0ef272da7058ef303b849a2c8dc324c2e2e upstream.
The CPU_MAP register is duplicated for each CPUs at different addresses,
each instance being at a different address.
However, the code so far was using CONFIG_NR_CPUS to initialise the CPU_MAP
registers for each registers, while the SoCs embed at most 4 CPUs.
This is especially an issue with multi_v7_defconfig, where CONFIG_NR_CPUS
is currently set to 16, resulting in writes to registers that are not
CPU_MAP.
Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network unit")
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Johannes Berg [Fri, 28 Aug 2015 08:52:53 +0000 (10:52 +0200)]
mac80211: fix driver RSSI event calculations
commit
8ec6d97871f37e4743678ea4a455bd59580aa0f4 upstream.
The ifmgd->ave_beacon_signal value cannot be taken as is for
comparisons, it must be divided by since it's represented
like that for better accuracy of the EWMA calculations. This
would lead to invalid driver RSSI events. Fix the used value.
Fixes: 615f7b9bb1f8 ("mac80211: add driver RSSI threshold events")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Andrew Cooper [Wed, 3 Jun 2015 09:31:14 +0000 (10:31 +0100)]
x86/cpu: Fix SMAP check in PVOPS environments
commit
581b7f158fe0383b492acd1ce3fb4e99d4e57808 upstream.
There appears to be no formal statement of what pv_irq_ops.save_fl() is
supposed to return precisely. Native returns the full flags, while lguest and
Xen only return the Interrupt Flag, and both have comments by the
implementations stating that only the Interrupt Flag is looked at. This may
have been true when initially implemented, but no longer is.
To make matters worse, the Xen PVOP leaves the upper bits undefined, making
the BUG_ON() undefined behaviour. Experimentally, this now trips for 32bit PV
guests on Broadwell hardware. The BUG_ON() is consistent for an individual
build, but not consistent for all builds. It has also been a sitting timebomb
since SMAP support was introduced.
Use native_save_fl() instead, which will obtain an accurate view of the AC
flag.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Tested-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: <lguest@lists.ozlabs.org>
Cc: Xen-devel <xen-devel@lists.xen.org>
Link: http://lkml.kernel.org/r/1433323874-6927-1-git-send-email-andrew.cooper3@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Borislav Petkov [Thu, 5 Nov 2015 15:57:56 +0000 (16:57 +0100)]
x86/cpu: Call verify_cpu() after having entered long mode too
commit
04633df0c43d710e5f696b06539c100898678235 upstream.
When we get loaded by a 64-bit bootloader, kernel entry point is
startup_64 in head_64.S. We don't trust any and all bootloaders because
some will fiddle with CPU configuration so we go ahead and massage each
CPU into sanity again.
For example, some dell BIOSes have this XD disable feature which set
IA32_MISC_ENABLE[34] and disable NX. This might be some dumb workaround
for other OSes but Linux sure doesn't need it.
A similar thing is present in the Surface 3 firmware - see
https://bugzilla.kernel.org/show_bug.cgi?id=106051 - which sets this bit
only on the BSP:
# rdmsr -a 0x1a0
400850089
850089
850089
850089
I know, right?!
There's not even an off switch in there.
So fix all those cases by sanitizing the 64-bit entry point too. For
that, make verify_cpu() callable in 64-bit mode also.
Requested-and-debugged-by: "H. Peter Anvin" <hpa@zytor.com>
Reported-and-tested-by: Bastien Nocera <bugzilla@hadess.net>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1446739076-21303-1-git-send-email-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Krzysztof Mazur [Fri, 6 Nov 2015 13:18:36 +0000 (14:18 +0100)]
x86/setup: Fix low identity map for >= 2GB kernel range
commit
68accac392d859d24adcf1be3a90e41f978bd54c upstream.
The commit
f5f3497cad8c extended the low identity mapping. However, if
the kernel uses more than 2 GB (VMSPLIT_2G_OPT or VMSPLIT_1G memory
split), the normal memory mapping is overwritten by the low identity
mapping causing a crash. To avoid overwritting, limit the low identity
map to cover only memory before kernel range (PAGE_OFFSET).
Fixes: f5f3497cad8c "x86/setup: Extend low identity map to cover whole kernel range
Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lkml.kernel.org/r/1446815916-22105-1-git-send-email-krzysiek@podlesie.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Paolo Bonzini [Wed, 14 Oct 2015 11:30:45 +0000 (13:30 +0200)]
x86/setup: Extend low identity map to cover whole kernel range
commit
f5f3497cad8c8416a74b9aaceb127908755d020a upstream.
On 32-bit systems, the initial_page_table is reused by
efi_call_phys_prolog as an identity map to call
SetVirtualAddressMap. efi_call_phys_prolog takes care of
converting the current CPU's GDT to a physical address too.
For PAE kernels the identity mapping is achieved by aliasing the
first PDPE for the kernel memory mapping into the first PDPE
of initial_page_table. This makes the EFI stub's trick "just work".
However, for non-PAE kernels there is no guarantee that the identity
mapping in the initial_page_table extends as far as the GDT; in this
case, accesses to the GDT will cause a page fault (which quickly becomes
a triple fault). Fix this by copying the kernel mappings from
swapper_pg_dir to initial_page_table twice, both at PAGE_OFFSET and at
identity mapping.
For some reason, this is only reproducible with QEMU's dynamic translation
mode, and not for example with KVM. However, even under KVM one can clearly
see that the page table is bogus:
$ qemu-system-i386 -pflash OVMF.fd -M q35 vmlinuz0 -s -S -daemonize
$ gdb
(gdb) target remote localhost:1234
(gdb) hb *0x02858f6f
Hardware assisted breakpoint 1 at 0x2858f6f
(gdb) c
Continuing.
Breakpoint 1, 0x02858f6f in ?? ()
(gdb) monitor info registers
...
GDT=
0724e000 000000ff
IDT=
fffbb000 000007ff
CR0=
0005003b CR2=
ff896000 CR3=
032b7000 CR4=
00000690
...
The page directory is sane:
(gdb) x/4wx 0x32b7000
0x32b7000: 0x03398063 0x03399063 0x0339a063 0x0339b063
(gdb) x/4wx 0x3398000
0x3398000: 0x00000163 0x00001163 0x00002163 0x00003163
(gdb) x/4wx 0x3399000
0x3399000: 0x00400003 0x00401003 0x00402003 0x00403003
but our particular page directory entry is empty:
(gdb) x/1wx 0x32b7000 + (0x724e000 >> 22) * 4
0x32b7070: 0x00000000
[ It appears that you can skate past this issue if you don't receive
any interrupts while the bogus GDT pointer is loaded, or if you avoid
reloading the segment registers in general.
Andy Lutomirski provides some additional insight:
"AFAICT it's entirely permissible for the GDTR and/or LDT
descriptor to point to unmapped memory. Any attempt to use them
(segment loads, interrupts, IRET, etc) will try to access that memory
as if the access came from CPL 0 and, if the access fails, will
generate a valid page fault with CR2 pointing into the GDT or
LDT."
Up until commit
23a0d4e8fa6d ("efi: Disable interrupts around EFI
calls, not in the epilog/prolog calls") interrupts were disabled
around the prolog and epilog calls, and the functional GDT was
re-installed before interrupts were re-enabled.
Which explains why no one has hit this issue until now. ]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
[ Updated changelog. ]
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Peter Ujfalusi [Wed, 14 Oct 2015 11:42:43 +0000 (14:42 +0300)]
ARM: common: edma: Fix channel parameter for irq callbacks
commit
696d8b70c09dd421c4d037fab04341e5b30585cf upstream.
In case when the interrupt happened for the second eDMA the channel
number was incorrectly passed to the client driver.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Marek Szyprowski [Fri, 28 Aug 2015 08:42:09 +0000 (09:42 +0100)]
ARM: 8427/1: dma-mapping: add support for offset parameter in dma_mmap()
commit
7e31210349e9e03a9a4dff31ab5f2bc83e8e84f5 upstream.
IOMMU-based dma_mmap() implementation lacked proper support for offset
parameter used in mmap call (it always assumed that mapping starts from
offset zero). This patch adds support for offset parameter to IOMMU-based
implementation.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Marek Szyprowski [Fri, 28 Aug 2015 08:41:39 +0000 (09:41 +0100)]
ARM: 8426/1: dma-mapping: add missing range check in dma_mmap()
commit
371f0f085f629fc0f66695f572373ca4445a67ad upstream.
dma_mmap() function in IOMMU-based dma-mapping implementation lacked
a check for valid range of mmap parameters (offset and buffer size), what
might have caused access beyond the allocated buffer. This patch fixes
this issue.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Dmitry Tunin [Thu, 18 Jun 2015 17:41:51 +0000 (20:41 +0300)]
Bluetooth: ath3k: Add support of 04ca:300d AR3012 device
commit
7e730c7f3d1f39c25cf5f7cf70c0ff4c28d7bec7 upstream.
BugLink: https://bugs.launchpad.net/bugs/1394368
This device requires new firmware files
AthrBT_0x11020100.dfu and ramps_0x11020100_40.dfu added to
/lib/firmware/ar3k/ that are not included in linux-firmware yet.
T: Bus=02 Lev=01 Prnt=01 Port=04 Cnt=03 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=04ca ProdID=300d Rev= 0.01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Tue, 1 Dec 2015 15:20:07 +0000 (07:20 -0800)]
ipv6: sctp: implement sctp_v6_destroy_sock()
[ Upstream commit
602dd62dfbda3e63a2d6a3cbde953ebe82bf5087 ]
Dmitry Vyukov reported a memory leak using IPV6 SCTP sockets.
We need to call inet6_destroy_sock() to properly release
inet6 specific fields.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Konstantin Khlebnikov [Mon, 30 Nov 2015 22:14:48 +0000 (01:14 +0300)]
net/neighbour: fix crash at dumping device-agnostic proxy entries
[ Upstream commit
6adc5fd6a142c6e2c80574c1db0c7c17dedaa42e ]
Proxy entries could have null pointer to net-device.
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Fixes: 84920c1420e2 ("net: Allow ipv6 proxies and arp proxies be shown with iproute2")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Mon, 30 Nov 2015 03:37:57 +0000 (19:37 -0800)]
ipv6: add complete rcu protection around np->opt
[ Upstream commit
45f6fad84cc305103b28d73482b344d7f5b76f39 ]
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Michal Kubeček [Tue, 24 Nov 2015 14:07:11 +0000 (15:07 +0100)]
ipv6: distinguish frag queues by device for multicast and link-local packets
[ Upstream commit
264640fc2c5f4f913db5c73fa3eb1ead2c45e9d7 ]
If a fragmented multicast packet is received on an ethernet device which
has an active macvlan on top of it, each fragment is duplicated and
received both on the underlying device and the macvlan. If some
fragments for macvlan are processed before the whole packet for the
underlying device is reassembled, the "overlapping fragments" test in
ip6_frag_queue() discards the whole fragment queue.
To resolve this, add device ifindex to the search key and require it to
match reassembling multicast packets and packets to link-local
addresses.
Note: similar patch has been already submitted by Yoshifuji Hideaki in
http://patchwork.ozlabs.org/patch/220979/
but got lost and forgotten for some reason.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Aaro Koskinen [Sat, 21 Nov 2015 23:08:54 +0000 (01:08 +0200)]
broadcom: fix PHY_ID_BCM5481 entry in the id table
[ Upstream commit
3c25a860d17b7378822f35d8c9141db9507e3beb ]
Commit
fcb26ec5b18d ("broadcom: move all PHY_ID's to header")
updated broadcom_tbl to use PHY_IDs, but incorrectly replaced 0x0143bca0
with PHY_ID_BCM5482 (making a duplicate entry, and completely omitting
the original). Fix that.
Fixes: fcb26ec5b18d ("broadcom: move all PHY_ID's to header")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Nikolay Aleksandrov [Fri, 20 Nov 2015 12:54:20 +0000 (13:54 +0100)]
net: ip6mr: fix static mfc/dev leaks on table destruction
[ Upstream commit
4c6980462f32b4f282c5d8e5f7ea8070e2937725 ]
Similar to ipv4, when destroying an mrt table the static mfc entries and
the static devices are kept, which leads to devices that can never be
destroyed (because of refcnt taken) and leaked memory. Make sure that
everything is cleaned up on netns destruction.
Fixes: 8229efdaef1e ("netns: ip6mr: enable namespace support in ipv6 multicast forwarding code")
CC: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Nikolay Aleksandrov [Fri, 20 Nov 2015 12:54:19 +0000 (13:54 +0100)]
net: ipmr: fix static mfc/dev leaks on table destruction
[ Upstream commit
0e615e9601a15efeeb8942cf7cd4dadba0c8c5a7 ]
When destroying an mrt table the static mfc entries and the static
devices are kept, which leads to devices that can never be destroyed
(because of refcnt taken) and leaked memory, for example:
unreferenced object 0xffff880034c144c0 (size 192):
comm "mfc-broken", pid 4777, jiffies
4320349055 (age 46001.964s)
hex dump (first 32 bytes):
98 53 f0 34 00 88 ff ff 98 53 f0 34 00 88 ff ff .S.4.....S.4....
ef 0a 0a 14 01 02 03 04 00 00 00 00 01 00 00 00 ................
backtrace:
[<
ffffffff815c1b9e>] kmemleak_alloc+0x4e/0xb0
[<
ffffffff811ea6e0>] kmem_cache_alloc+0x190/0x300
[<
ffffffff815931cb>] ip_mroute_setsockopt+0x5cb/0x910
[<
ffffffff8153d575>] do_ip_setsockopt.isra.11+0x105/0xff0
[<
ffffffff8153e490>] ip_setsockopt+0x30/0xa0
[<
ffffffff81564e13>] raw_setsockopt+0x33/0x90
[<
ffffffff814d1e14>] sock_common_setsockopt+0x14/0x20
[<
ffffffff814d0b51>] SyS_setsockopt+0x71/0xc0
[<
ffffffff815cdbf6>] entry_SYSCALL_64_fastpath+0x16/0x7a
[<
ffffffffffffffff>] 0xffffffffffffffff
Make sure that everything is cleaned on netns destruction.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Daniel Borkmann [Thu, 19 Nov 2015 23:11:56 +0000 (00:11 +0100)]
net, scm: fix PaX detected msg_controllen overflow in scm_detach_fds
[ Upstream commit
6900317f5eff0a7070c5936e5383f589e0de7a09 ]
David and HacKurx reported a following/similar size overflow triggered
in a grsecurity kernel, thanks to PaX's gcc size overflow plugin:
(Already fixed in later grsecurity versions by Brad and PaX Team.)
[ 1002.296137] PAX: size overflow detected in function scm_detach_fds net/core/scm.c:314
cicus.202_127 min, count: 4, decl: msg_controllen; num: 0; context: msghdr;
[ 1002.296145] CPU: 0 PID: 3685 Comm: scm_rights_recv Not tainted 4.2.3-grsec+ #7
[ 1002.296149] Hardware name: Apple Inc. MacBookAir5,1/Mac-
66F35F19FE2A0D05, [...]
[ 1002.296153]
ffffffff81c27366 0000000000000000 ffffffff81c27375 ffffc90007843aa8
[ 1002.296162]
ffffffff818129ba 0000000000000000 ffffffff81c27366 ffffc90007843ad8
[ 1002.296169]
ffffffff8121f838 fffffffffffffffc fffffffffffffffc ffffc90007843e60
[ 1002.296176] Call Trace:
[ 1002.296190] [<
ffffffff818129ba>] dump_stack+0x45/0x57
[ 1002.296200] [<
ffffffff8121f838>] report_size_overflow+0x38/0x60
[ 1002.296209] [<
ffffffff816a979e>] scm_detach_fds+0x2ce/0x300
[ 1002.296220] [<
ffffffff81791899>] unix_stream_read_generic+0x609/0x930
[ 1002.296228] [<
ffffffff81791c9f>] unix_stream_recvmsg+0x4f/0x60
[ 1002.296236] [<
ffffffff8178dc00>] ? unix_set_peek_off+0x50/0x50
[ 1002.296243] [<
ffffffff8168fac7>] sock_recvmsg+0x47/0x60
[ 1002.296248] [<
ffffffff81691522>] ___sys_recvmsg+0xe2/0x1e0
[ 1002.296257] [<
ffffffff81693496>] __sys_recvmsg+0x46/0x80
[ 1002.296263] [<
ffffffff816934fc>] SyS_recvmsg+0x2c/0x40
[ 1002.296271] [<
ffffffff8181a3ab>] entry_SYSCALL_64_fastpath+0x12/0x85
Further investigation showed that this can happen when an *odd* number of
fds are being passed over AF_UNIX sockets.
In these cases CMSG_LEN(i * sizeof(int)) and CMSG_SPACE(i * sizeof(int)),
where i is the number of successfully passed fds, differ by 4 bytes due
to the extra CMSG_ALIGN() padding in CMSG_SPACE() to an 8 byte boundary
on 64 bit. The padding is used to align subsequent cmsg headers in the
control buffer.
When the control buffer passed in from the receiver side *lacks* these 4
bytes (e.g. due to buggy/wrong API usage), then msg->msg_controllen will
overflow in scm_detach_fds():
int cmlen = CMSG_LEN(i * sizeof(int)); <--- cmlen w/o tail-padding
err = put_user(SOL_SOCKET, &cm->cmsg_level);
if (!err)
err = put_user(SCM_RIGHTS, &cm->cmsg_type);
if (!err)
err = put_user(cmlen, &cm->cmsg_len);
if (!err) {
cmlen = CMSG_SPACE(i * sizeof(int)); <--- cmlen w/ 4 byte extra tail-padding
msg->msg_control += cmlen;
msg->msg_controllen -= cmlen; <--- iff no tail-padding space here ...
} ... wrap-around
F.e. it will wrap to a length of
18446744073709551612 bytes in case the
receiver passed in msg->msg_controllen of 20 bytes, and the sender
properly transferred 1 fd to the receiver, so that its CMSG_LEN results
in 20 bytes and CMSG_SPACE in 24 bytes.
In case of MSG_CMSG_COMPAT (scm_detach_fds_compat()), I haven't seen an
issue in my tests as alignment seems always on 4 byte boundary. Same
should be in case of native 32 bit, where we end up with 4 byte boundaries
as well.
In practice, passing msg->msg_controllen of 20 to recvmsg() while receiving
a single fd would mean that on successful return, msg->msg_controllen is
being set by the kernel to 24 bytes instead, thus more than the input
buffer advertised. It could f.e. become an issue if such application later
on zeroes or copies the control buffer based on the returned msg->msg_controllen
elsewhere.
Maximum number of fds we can send is a hard upper limit SCM_MAX_FD (253).
Going over the code, it seems like msg->msg_controllen is not being read
after scm_detach_fds() in scm_recv() anymore by the kernel, good!
Relevant recvmsg() handler are unix_dgram_recvmsg() (unix_seqpacket_recvmsg())
and unix_stream_recvmsg(). Both return back to their recvmsg() caller,
and ___sys_recvmsg() places the updated length, that is, new msg_control -
old msg_control pointer into msg->msg_controllen (hence the 24 bytes seen
in the example).
Long time ago, Wei Yongjun fixed something related in commit
1ac70e7ad24a
("[NET]: Fix function put_cmsg() which may cause usr application memory
overflow").
RFC3542, section 20.2. says:
The fields shown as "XX" are possible padding, between the cmsghdr
structure and the data, and between the data and the next cmsghdr
structure, if required by the implementation. While sending an
application may or may not include padding at the end of last
ancillary data in msg_controllen and implementations must accept both
as valid. On receiving a portable application must provide space for
padding at the end of the last ancillary data as implementations may
copy out the padding at the end of the control message buffer and
include it in the received msg_controllen. When recvmsg() is called
if msg_controllen is too small for all the ancillary data items
including any trailing padding after the last item an implementation
may set MSG_CTRUNC.
Since we didn't place MSG_CTRUNC for already quite a long time, just do
the same as in
1ac70e7ad24a to avoid an overflow.
Btw, even man-page author got this wrong :/ See
db939c9b26e9 ("cmsg.3: Fix
error in SCM_RIGHTS code sample"). Some people must have copied this (?),
thus it got triggered in the wild (reported several times during boot by
David and HacKurx).
No Fixes tag this time as pre 2002 (that is, pre history tree).
Reported-by: David Sterba <dave@jikos.cz>
Reported-by: HacKurx <hackurx@gmail.com>
Cc: PaX Team <pageexec@freemail.hu>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: Brad Spengler <spender@grsecurity.net>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Eric Dumazet <edumazet@google.com>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Thu, 26 Nov 2015 16:18:14 +0000 (08:18 -0800)]
tcp: initialize tp->copied_seq in case of cross SYN connection
[ Upstream commit
142a2e7ece8d8ac0e818eb2c91f99ca894730e2a ]
Dmitry provided a syzkaller (http://github.com/google/syzkaller)
generated program that triggers the WARNING at
net/ipv4/tcp.c:1729 in tcp_recvmsg() :
WARN_ON(tp->copied_seq != tp->rcv_nxt &&
!(flags & (MSG_PEEK | MSG_TRUNC)));
His program is specifically attempting a Cross SYN TCP exchange,
that we support (for the pleasure of hackers ?), but it looks we
lack proper tcp->copied_seq initialization.
Thanks again Dmitry for your report and testings.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Wed, 18 Nov 2015 20:40:13 +0000 (12:40 -0800)]
tcp: md5: fix lockdep annotation
[ Upstream commit
1b8e6a01e19f001e9f93b39c32387961c91ed3cc ]
When a passive TCP is created, we eventually call tcp_md5_do_add()
with sk pointing to the child. It is not owner by the user yet (we
will add this socket into listener accept queue a bit later anyway)
But we do own the spinlock, so amend the lockdep annotation to avoid
following splat :
[ 8451.090932] net/ipv4/tcp_ipv4.c:923 suspicious rcu_dereference_protected() usage!
[ 8451.090932]
[ 8451.090932] other info that might help us debug this:
[ 8451.090932]
[ 8451.090934]
[ 8451.090934] rcu_scheduler_active = 1, debug_locks = 1
[ 8451.090936] 3 locks held by socket_sockopt_/214795:
[ 8451.090936] #0: (rcu_read_lock){.+.+..}, at: [<
ffffffff855c6ac1>] __netif_receive_skb_core+0x151/0xe90
[ 8451.090947] #1: (rcu_read_lock){.+.+..}, at: [<
ffffffff85618143>] ip_local_deliver_finish+0x43/0x2b0
[ 8451.090952] #2: (slock-AF_INET){+.-...}, at: [<
ffffffff855acda5>] sk_clone_lock+0x1c5/0x500
[ 8451.090958]
[ 8451.090958] stack backtrace:
[ 8451.090960] CPU: 7 PID: 214795 Comm: socket_sockopt_
[ 8451.091215] Call Trace:
[ 8451.091216] <IRQ> [<
ffffffff856fb29c>] dump_stack+0x55/0x76
[ 8451.091229] [<
ffffffff85123b5b>] lockdep_rcu_suspicious+0xeb/0x110
[ 8451.091235] [<
ffffffff8564544f>] tcp_md5_do_add+0x1bf/0x1e0
[ 8451.091239] [<
ffffffff85645751>] tcp_v4_syn_recv_sock+0x1f1/0x4c0
[ 8451.091242] [<
ffffffff85642b27>] ? tcp_v4_md5_hash_skb+0x167/0x190
[ 8451.091246] [<
ffffffff85647c78>] tcp_check_req+0x3c8/0x500
[ 8451.091249] [<
ffffffff856451ae>] ? tcp_v4_inbound_md5_hash+0x11e/0x190
[ 8451.091253] [<
ffffffff85647170>] tcp_v4_rcv+0x3c0/0x9f0
[ 8451.091256] [<
ffffffff85618143>] ? ip_local_deliver_finish+0x43/0x2b0
[ 8451.091260] [<
ffffffff856181b6>] ip_local_deliver_finish+0xb6/0x2b0
[ 8451.091263] [<
ffffffff85618143>] ? ip_local_deliver_finish+0x43/0x2b0
[ 8451.091267] [<
ffffffff85618d38>] ip_local_deliver+0x48/0x80
[ 8451.091270] [<
ffffffff85618510>] ip_rcv_finish+0x160/0x700
[ 8451.091273] [<
ffffffff8561900e>] ip_rcv+0x29e/0x3d0
[ 8451.091277] [<
ffffffff855c74b7>] __netif_receive_skb_core+0xb47/0xe90
Fixes: a8afca0329988 ("tcp: md5: protects md5sig_info with RCU")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Bjørn Mork [Wed, 18 Nov 2015 20:13:07 +0000 (21:13 +0100)]
net: qmi_wwan: add XS Stick W100-2 from 4G Systems
[ Upstream commit
68242a5a1e2edce39b069385cbafb82304eac0f1 ]
Thomas reports
"
4gsystems sells two total different LTE-surfsticks under the same name.
..
The newer version of XS Stick W100 is from "omega"
..
Under windows the driver switches to the same ID, and uses MI03\6 for
network and MI01\6 for modem.
..
echo "1c9e 9b01" > /sys/bus/usb/drivers/qmi_wwan/new_id
echo "1c9e 9b01" > /sys/bus/usb-serial/drivers/option1/new_id
T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 4 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1c9e ProdID=9b01 Rev=02.32
S: Manufacturer=USB Modem
S: Product=USB Modem
S: SerialNumber=
C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
I: If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
Now all important things are there:
wwp0s29f7u2i3 (net), ttyUSB2 (at), cdc-wdm0 (qmi), ttyUSB1 (at)
There is also ttyUSB0, but it is not usable, at least not for at.
The device works well with qmi and ModemManager-NetworkManager.
"
Reported-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Neil Horman [Mon, 16 Nov 2015 18:09:10 +0000 (13:09 -0500)]
snmp: Remove duplicate OUTMCAST stat increment
[ Upstream commit
41033f029e393a64e81966cbe34d66c6cf8a2e7e ]
the OUTMCAST stat is double incremented, getting bumped once in the mcast code
itself, and again in the common ip output path. Remove the mcast bump, as its
not needed
Validated by the reporter, with good results
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Claus Jensen <claus.jensen@microsemi.com>
CC: Claus Jensen <claus.jensen@microsemi.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
lucien [Thu, 12 Nov 2015 05:07:07 +0000 (13:07 +0800)]
sctp: translate host order to network order when setting a hmacid
[ Upstream commit
ed5a377d87dc4c87fb3e1f7f698cba38cd893103 ]
now sctp auth cannot work well when setting a hmacid manually, which
is caused by that we didn't use the network order for hmacid, so fix
it by adding the transformation in sctp_auth_ep_set_hmacs.
even we set hmacid with the network order in userspace, it still
can't work, because of this condition in sctp_auth_ep_set_hmacs():
if (id > SCTP_AUTH_HMAC_ID_MAX)
return -EOPNOTSUPP;
so this wasn't working before and thus it won't break compatibility.
Fixes: 65b07e5d0d09 ("[SCTP]: API updates to suport SCTP-AUTH extensions.")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Daniel Borkmann [Wed, 11 Nov 2015 22:25:43 +0000 (23:25 +0100)]
packet: infer protocol from ethernet header if unset
[ Upstream commit
c72219b75fde768efccf7666342282fab7f9e4e7 ]
In case no struct sockaddr_ll has been passed to packet
socket's sendmsg() when doing a TX_RING flush run, then
skb->protocol is set to po->num instead, which is the protocol
passed via socket(2)/bind(2).
Applications only xmitting can go the path of allocating the
socket as socket(PF_PACKET, <mode>, 0) and do a bind(2) on the
TX_RING with sll_protocol of 0. That way, register_prot_hook()
is neither called on creation nor on bind time, which saves
cycles when there's no interest in capturing anyway.
That leaves us however with po->num 0 instead and therefore
the TX_RING flush run sets skb->protocol to 0 as well. Eric
reported that this leads to problems when using tools like
trafgen over bonding device. I.e. the bonding's hash function
could invoke the kernel's flow dissector, which depends on
skb->protocol being properly set. In the current situation, all
the traffic is then directed to a single slave.
Fix it up by inferring skb->protocol from the Ethernet header
when not set and we have ARPHRD_ETHER device type. This is only
done in case of SOCK_RAW and where we have a dev->hard_header_len
length. In case of ARPHRD_ETHER devices, this is guaranteed to
cover ETH_HLEN, and therefore being accessed on the skb after
the skb_store_bits().
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Daniel Borkmann [Wed, 11 Nov 2015 22:25:40 +0000 (23:25 +0100)]
packet: do skb_probe_transport_header when we actually have data
[ Upstream commit
efdfa2f7848f64517008136fb41f53c4a1faf93a ]
In tpacket_fill_skb() commit
c1aad275b029 ("packet: set transport
header before doing xmit") and later on
40893fd0fd4e ("net: switch
to use skb_probe_transport_header()") was probing for a transport
header on the skb from a ring buffer slot, but at a time, where
the skb has _not even_ been filled with data yet. So that call into
the flow dissector is pretty useless. Lets do it after we've set
up the skb frags.
Fixes: c1aad275b029 ("packet: set transport header before doing xmit")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Rainer Weikusat [Fri, 20 Nov 2015 22:07:23 +0000 (22:07 +0000)]
unix: avoid use-after-free in ep_remove_wait_queue
[ Upstream commit
7d267278a9ece963d77eefec61630223fce08c6c ]
Rainer Weikusat <rweikusat@mobileactivedefense.com> writes:
An AF_UNIX datagram socket being the client in an n:1 association with
some server socket is only allowed to send messages to the server if the
receive queue of this socket contains at most sk_max_ack_backlog
datagrams. This implies that prospective writers might be forced to go
to sleep despite none of the message presently enqueued on the server
receive queue were sent by them. In order to ensure that these will be
woken up once space becomes again available, the present unix_dgram_poll
routine does a second sock_poll_wait call with the peer_wait wait queue
of the server socket as queue argument (unix_dgram_recvmsg does a wake
up on this queue after a datagram was received). This is inherently
problematic because the server socket is only guaranteed to remain alive
for as long as the client still holds a reference to it. In case the
connection is dissolved via connect or by the dead peer detection logic
in unix_dgram_sendmsg, the server socket may be freed despite "the
polling mechanism" (in particular, epoll) still has a pointer to the
corresponding peer_wait queue. There's no way to forcibly deregister a
wait queue with epoll.
Based on an idea by Jason Baron, the patch below changes the code such
that a wait_queue_t belonging to the client socket is enqueued on the
peer_wait queue of the server whenever the peer receive queue full
condition is detected by either a sendmsg or a poll. A wake up on the
peer queue is then relayed to the ordinary wait queue of the client
socket via wake function. The connection to the peer wait queue is again
dissolved if either a wake up is about to be relayed or the client
socket reconnects or a dead peer is detected or the client socket is
itself closed. This enables removing the second sock_poll_wait from
unix_dgram_poll, thus avoiding the use-after-free, while still ensuring
that no blocked writer sleeps forever.
Signed-off-by: Rainer Weikusat <rweikusat@mobileactivedefense.com>
Fixes: ec0d215f9420 ("af_unix: fix 'poll for write'/connected DGRAM sockets")
Reviewed-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
James Hogan [Fri, 11 Dec 2015 17:06:55 +0000 (17:06 +0000)]
MIPS: KVM: Uninit VCPU in vcpu_create error path
commit
585bb8f9a5e592f2ce7abbe5ed3112d5438d2754 upstream.
If either of the memory allocations in kvm_arch_vcpu_create() fail, the
vcpu which has been allocated and kvm_vcpu_init'd doesn't get uninit'd
in the error handling path. Add a call to kvm_vcpu_uninit() to fix this.
Fixes: 669e846e6c4e ("KVM/MIPS32: MIPS arch specific APIs for KVM")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
James Hogan [Fri, 11 Dec 2015 17:06:54 +0000 (17:06 +0000)]
MIPS: KVM: Fix CACHE immediate offset sign extension
commit
c5c2a3b998f1ff5a586f9d37e154070b8d550d17 upstream.
The immediate field of the CACHE instruction is signed, so ensure that
it gets sign extended by casting it to an int16_t rather than just
masking the low 16 bits.
Fixes: e685c689f3a8 ("KVM/MIPS32: Privileged instruction/target branch emulation.")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
James Hogan [Fri, 11 Dec 2015 17:06:53 +0000 (17:06 +0000)]
MIPS: KVM: Fix ASID restoration logic
commit
002374f371bd02df864cce1fe85d90dc5b292837 upstream.
ASID restoration on guest resume should determine the guest execution
mode based on the guest Status register rather than bit 30 of the guest
PC.
Fix the two places in locore.S that do this, loading the guest status
from the cop0 area. Note, this assembly is specific to the trap &
emulate implementation of KVM, so it doesn't need to check the
supervisor bit as that mode is not implemented in the guest.
Fixes: b680f70fc111 ("KVM/MIPS32: Entry point for trampolining to...")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Michal Kubeček [Tue, 3 Nov 2015 07:51:07 +0000 (08:51 +0100)]
ipv6: fix tunnel error handling
commit
ebac62fe3d24c0ce22dd83afa7b07d1a2aaef44d upstream.
Both tunnel6_protocol and tunnel46_protocol share the same error
handler, tunnel6_err(), which traverses through tunnel6_handlers list.
For ipip6 tunnels, we need to traverse tunnel46_handlers as we do e.g.
in tunnel46_rcv(). Current code can generate an ICMPv6 error message
with an IPv4 packet embedded in it.
Fixes: 73d605d1abbd ("[IPSEC]: changing API of xfrm6_tunnel_register")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Jiri Slaby [Mon, 23 Nov 2015 13:04:07 +0000 (14:04 +0100)]
Linux 3.12.51
Yasuaki Ishimatsu [Fri, 22 Aug 2014 20:27:34 +0000 (13:27 -0700)]
x86/mm/hotplug: Modify PGD entry when removing memory
commit
9661d5bcd058fe15b4138a00d96bd36516134543 upstream.
When hot-adding/removing memory, sync_global_pgds() is called
for synchronizing PGD to PGD entries of all processes MM. But
when hot-removing memory, sync_global_pgds() does not work
correctly.
At first, sync_global_pgds() checks whether target PGD is none
or not. And if PGD is none, the PGD is skipped. But when
hot-removing memory, PGD may be none since PGD may be cleared by
free_pud_table(). So when sync_global_pgds() is called after
hot-removing memory, sync_global_pgds() should not skip PGD even
if the PGD is none. And sync_global_pgds() must clear PGD
entries of all processes MM.
Currently sync_global_pgds() does not clear PGD entries of all
processes MM when hot-removing memory. So when hot adding
memory which is same memory range as removed memory after
hot-removing memory, following call traces are shown:
kernel BUG at arch/x86/mm/init_64.c:206!
...
[<
ffffffff815e0c80>] kernel_physical_mapping_init+0x1b2/0x1d2
[<
ffffffff815ced94>] init_memory_mapping+0x1d4/0x380
[<
ffffffff8104aebd>] arch_add_memory+0x3d/0xd0
[<
ffffffff815d03d9>] add_memory+0xb9/0x1b0
[<
ffffffff81352415>] acpi_memory_device_add+0x1af/0x28e
[<
ffffffff81325dc4>] acpi_bus_device_attach+0x8c/0xf0
[<
ffffffff813413b9>] acpi_ns_walk_namespace+0xc8/0x17f
[<
ffffffff81325d38>] ? acpi_bus_type_and_status+0xb7/0xb7
[<
ffffffff81325d38>] ? acpi_bus_type_and_status+0xb7/0xb7
[<
ffffffff813418ed>] acpi_walk_namespace+0x95/0xc5
[<
ffffffff81326b4c>] acpi_bus_scan+0x9a/0xc2
[<
ffffffff81326bff>] acpi_scan_bus_device_check+0x8b/0x12e
[<
ffffffff81326cb5>] acpi_scan_device_check+0x13/0x15
[<
ffffffff81320122>] acpi_os_execute_deferred+0x25/0x32
[<
ffffffff8107e02b>] process_one_work+0x17b/0x460
[<
ffffffff8107edfb>] worker_thread+0x11b/0x400
[<
ffffffff8107ece0>] ? rescuer_thread+0x400/0x400
[<
ffffffff81085aef>] kthread+0xcf/0xe0
[<
ffffffff81085a20>] ? kthread_create_on_node+0x140/0x140
[<
ffffffff815fc76c>] ret_from_fork+0x7c/0xb0
[<
ffffffff81085a20>] ? kthread_create_on_node+0x140/0x140
This patch clears PGD entries of all processes MM when
sync_global_pgds() is called after hot-removing memory
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Yasuaki Ishimatsu [Fri, 22 Aug 2014 20:27:31 +0000 (13:27 -0700)]
x86/mm/hotplug: Pass sync_global_pgds() a correct argument in remove_pagetable()
commit
5255e0a79fcc0ff47b387af92bd9ef5729b1b859 upstream.
When hot-adding memory after hot-removing memory, following call
traces are shown:
kernel BUG at arch/x86/mm/init_64.c:206!
...
[<
ffffffff815e0c80>] kernel_physical_mapping_init+0x1b2/0x1d2
[<
ffffffff815ced94>] init_memory_mapping+0x1d4/0x380
[<
ffffffff8104aebd>] arch_add_memory+0x3d/0xd0
[<
ffffffff815d03d9>] add_memory+0xb9/0x1b0
[<
ffffffff81352415>] acpi_memory_device_add+0x1af/0x28e
[<
ffffffff81325dc4>] acpi_bus_device_attach+0x8c/0xf0
[<
ffffffff813413b9>] acpi_ns_walk_namespace+0xc8/0x17f
[<
ffffffff81325d38>] ? acpi_bus_type_and_status+0xb7/0xb7
[<
ffffffff81325d38>] ? acpi_bus_type_and_status+0xb7/0xb7
[<
ffffffff813418ed>] acpi_walk_namespace+0x95/0xc5
[<
ffffffff81326b4c>] acpi_bus_scan+0x9a/0xc2
[<
ffffffff81326bff>] acpi_scan_bus_device_check+0x8b/0x12e
[<
ffffffff81326cb5>] acpi_scan_device_check+0x13/0x15
[<
ffffffff81320122>] acpi_os_execute_deferred+0x25/0x32
[<
ffffffff8107e02b>] process_one_work+0x17b/0x460
[<
ffffffff8107edfb>] worker_thread+0x11b/0x400
[<
ffffffff8107ece0>] ? rescuer_thread+0x400/0x400
[<
ffffffff81085aef>] kthread+0xcf/0xe0
[<
ffffffff81085a20>] ? kthread_create_on_node+0x140/0x140
[<
ffffffff815fc76c>] ret_from_fork+0x7c/0xb0
[<
ffffffff81085a20>] ? kthread_create_on_node+0x140/0x140
The patch-set fixes the issue.
This patch (of 2):
remove_pagetable() gets start argument and passes the argument
to sync_global_pgds(). In this case, the argument must not be
modified. If the argument is modified and passed to
sync_global_pgds(), sync_global_pgds() does not correctly
synchronize PGD to PGD entries of all processes MM since
synchronized range of memory [start, end] is wrong.
Unfortunately the start argument is modified in
remove_pagetable(). So this patch fixes the issue.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Marcelo Leitner [Mon, 23 Feb 2015 14:17:13 +0000 (11:17 -0300)]
ipv6: addrconf: validate new MTU before applying it
commit
77751427a1ff25b27d47a4c36b12c3c8667855ac upstream.
Currently we don't check if the new MTU is valid or not and this allows
one to configure a smaller than minimum allowed by RFCs or even bigger
than interface own MTU, which is a problem as it may lead to packet
drops.
If you have a daemon like NetworkManager running, this may be exploited
by remote attackers by forging RA packets with an invalid MTU, possibly
leading to a DoS. (NetworkManager currently only validates for values
too small, but not for too big ones.)
The fix is just to make sure the new value is valid. That is, between
IPV6_MIN_MTU and interface's MTU.
Note that similar check is already performed at
ndisc_router_discovery(), for when kernel itself parses the RA.
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Nadav Amit [Thu, 18 Sep 2014 19:39:40 +0000 (22:39 +0300)]
KVM: x86: Use new is_noncanonical_address in _linearize
commit
4be4de7ef9fd3a4d77320d4713970299ffecd286 upstream.
Replace the current canonical address check with the new function which is
identical.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Nadav Amit [Mon, 27 Oct 2014 22:03:43 +0000 (00:03 +0200)]
KVM: x86: Fix far-jump to non-canonical check
commit
7e46dddd6f6cd5dbf3c7bd04a7e75d19475ac9f2 upstream.
Commit
d1442d85cc30 ("KVM: x86: Handle errors when RIP is set during far
jumps") introduced a bug that caused the fix to be incomplete. Due to
incorrect evaluation, far jump to segment with L bit cleared (i.e., 32-bit
segment) and RIP with any of the high bits set (i.e, RIP[63:32] != 0) set may
not trigger #GP. As we know, this imposes a security problem.
In addition, the condition for two warnings was incorrect.
Fixes: d1442d85cc30ea75f7d399474ca738e0bc96f715
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
[Add #ifdef CONFIG_X86_64 to avoid complaints of undefined behavior. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Paolo Bonzini [Tue, 10 Nov 2015 08:14:39 +0000 (09:14 +0100)]
KVM: svm: unconditionally intercept #DB
commit
cbdb967af3d54993f5814f1cee0ed311a055377d upstream.
This is needed to avoid the possibility that the guest triggers
an infinite stream of #DB exceptions (CVE-2015-8104).
VMX is not affected: because it does not save DR6 in the VMCS,
it already intercepts #DB unconditionally.
Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Northup [Tue, 3 Nov 2015 17:03:53 +0000 (18:03 +0100)]
KVM: x86: work around infinite loop in microcode when #AC is delivered
commit
54a20552e1eae07aa240fa370a0293e006b5faed upstream.
It was found that a guest can DoS a host by triggering an infinite
stream of "alignment check" (#AC) exceptions. This causes the
microcode to enter an infinite loop where the core never receives
another interrupt. The host kernel panics pretty quickly due to the
effects (CVE-2015-5307).
Signed-off-by: Eric Northup <digitaleric@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Nadav Amit [Mon, 21 Jul 2014 11:37:24 +0000 (14:37 +0300)]
KVM: x86: Defining missing x86 vectors
commit
c9cdd085bb75226879fd468b88e2e7eb467325b7 upstream.
Defining XE, XM and VE vector numbers.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
David Howells [Thu, 15 Oct 2015 16:21:37 +0000 (17:21 +0100)]
KEYS: Fix crash when attempt to garbage collect an uninstantiated keyring
commit
f05819df10d7b09f6d1eb6f8534a8f68e5a4fe61 upstream.
The following sequence of commands:
i=`keyctl add user a a @s`
keyctl request2 keyring foo bar @t
keyctl unlink $i @s
tries to invoke an upcall to instantiate a keyring if one doesn't already
exist by that name within the user's keyring set. However, if the upcall
fails, the code sets keyring->type_data.reject_error to -ENOKEY or some
other error code. When the key is garbage collected, the key destroy
function is called unconditionally and keyring_destroy() uses list_empty()
on keyring->type_data.link - which is in a union with reject_error.
Subsequently, the kernel tries to unlink the keyring from the keyring names
list - which oopses like this:
BUG: unable to handle kernel paging request at
00000000ffffff8a
IP: [<
ffffffff8126e051>] keyring_destroy+0x3d/0x88
...
Workqueue: events key_garbage_collector
...
RIP: 0010:[<
ffffffff8126e051>] keyring_destroy+0x3d/0x88
RSP: 0018:
ffff88003e2f3d30 EFLAGS:
00010203
RAX:
00000000ffffff82 RBX:
ffff88003bf1a900 RCX:
0000000000000000
RDX:
0000000000000000 RSI:
000000003bfc6901 RDI:
ffffffff81a73a40
RBP:
ffff88003e2f3d38 R08:
0000000000000152 R09:
0000000000000000
R10:
ffff88003e2f3c18 R11:
000000000000865b R12:
ffff88003bf1a900
R13:
0000000000000000 R14:
ffff88003bf1a908 R15:
ffff88003e2f4000
...
CR2:
00000000ffffff8a CR3:
000000003e3ec000 CR4:
00000000000006f0
...
Call Trace:
[<
ffffffff8126c756>] key_gc_unused_keys.constprop.1+0x5d/0x10f
[<
ffffffff8126ca71>] key_garbage_collector+0x1fa/0x351
[<
ffffffff8105ec9b>] process_one_work+0x28e/0x547
[<
ffffffff8105fd17>] worker_thread+0x26e/0x361
[<
ffffffff8105faa9>] ? rescuer_thread+0x2a8/0x2a8
[<
ffffffff810648ad>] kthread+0xf3/0xfb
[<
ffffffff810647ba>] ? kthread_create_on_node+0x1c2/0x1c2
[<
ffffffff815f2ccf>] ret_from_fork+0x3f/0x70
[<
ffffffff810647ba>] ? kthread_create_on_node+0x1c2/0x1c2
Note the value in RAX. This is a 32-bit representation of -ENOKEY.
The solution is to only call ->destroy() if the key was successfully
instantiated.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
David Howells [Fri, 25 Sep 2015 15:30:08 +0000 (16:30 +0100)]
KEYS: Fix race between key destruction and finding a keyring by name
commit
94c4554ba07adbdde396748ee7ae01e86cf2d8d7 upstream.
There appears to be a race between:
(1) key_gc_unused_keys() which frees key->security and then calls
keyring_destroy() to unlink the name from the name list
(2) find_keyring_by_name() which calls key_permission(), thus accessing
key->security, on a key before checking to see whether the key usage is 0
(ie. the key is dead and might be cleaned up).
Fix this by calling ->destroy() before cleaning up the core key data -
including key->security.
Reported-by: Petr Matousek <pmatouse@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Ilya Dryomov [Sun, 11 Oct 2015 17:38:00 +0000 (19:38 +0200)]
rbd: prevent kernel stack blow up on rbd map
commit
6d69bb536bac0d403d83db1ca841444981b280cd upstream.
Mapping an image with a long parent chain (e.g. image foo, whose parent
is bar, whose parent is baz, etc) currently leads to a kernel stack
overflow, due to the following recursion in the reply path:
rbd_osd_req_callback()
rbd_obj_request_complete()
rbd_img_obj_callback()
rbd_img_parent_read_callback()
rbd_obj_request_complete()
...
Limit the parent chain to 16 images, which is ~5K worth of stack. When
the above recursion is eliminated, this limit can be lifted.
Fixes: http://tracker.ceph.com/issues/12538
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
[idryomov@gmail.com: backport to 3.10: rbd_dev->opts, context]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Ilya Dryomov [Sun, 11 Oct 2015 17:38:00 +0000 (19:38 +0200)]
rbd: don't leak parent_spec in rbd_dev_probe_parent()
commit
1f2c6651f69c14d0d3a9cfbda44ea101b02160ba upstream.
Currently we leak parent_spec and trigger a "parent reference
underflow" warning if rbd_dev_create() in rbd_dev_probe_parent() fails.
The problem is we take the !parent out_err branch and that only drops
refcounts; parent_spec that would've been freed had we called
rbd_dev_unparent() remains and triggers rbd_warn() in
rbd_dev_parent_put() - at that point we have parent_spec != NULL and
parent_ref == 0, so counter ends up being -1 after the decrement.
Redo rbd_dev_probe_parent() to fix this.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
[idryomov@gmail.com: backport to < 4.2: rbd_dev->opts]
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Florian Fainelli [Sat, 3 Oct 2015 20:03:47 +0000 (13:03 -0700)]
ARM: orion: Fix DSA platform device after mvmdio conversion
commit
d836ace65ee98d7079bc3c5afdbcc0e27dca20a3 upstream.
DSA expects the host_dev pointer to be the device structure associated
with the MDIO bus controller driver. First commit breaking that was
c3a07134e6aa ("mv643xx_eth: convert to use the Marvell Orion MDIO
driver"), and then, it got completely under the radar for a while.
Reported-by: Frans van de Wiel <fvdw@fvdw.eu>
Fixes: c3a07134e6aa ("mv643xx_eth: convert to use the Marvell Orion MDIO driver")
CC: stable@vger.kernel.org
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Peter Hurley [Wed, 11 Mar 2015 13:19:16 +0000 (09:19 -0400)]
serial: 8250_dw: Fix deadlock in LCR workaround
commit
7fd6f640f2dd17dac6ddd6702c378cb0bb9cfa11 upstream.
Trying to write console output from within the serial console driver
while the port->lock is held causes recursive deadlock:
CPU 0
spin_lock_irqsave(&port->lock)
printk()
console_unlock()
call_console_drivers()
serial8250_console_write()
spin_lock_irqsave(&port->lock)
** DEADLOCK **
The 8250_dw i/o accessors try to write a console error message if the
LCR workaround was unsuccessful. When the port->lock is already held
(eg., when called from serial8250_set_termios()), this deadlocks.
Make the error message a FIXME until a general solution is devised.
Cc: Tim Kryger <tim.kryger@gmail.com>
Reported-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
hayeswang [Wed, 9 Jul 2014 06:52:51 +0000 (14:52 +0800)]
r8169: disable L23
commit
b51ecea852b712618796d9eab8428a7d5f1f106f upstream.
For RTL8411, RTL8111G, RTL8402, RTL8105, and RTL8106, disable the feature
of entering the L2/L3 link state of the PCIe. When the nic starts the process
of entering the L2/L3 link state and the PCI reset occurs before the work
is finished, the work would be queued and continue after the next the PCI
reset occurs. This causes the device stays in L2/L3 link state, and the system
couldn't find the device.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
hayeswang [Tue, 11 Mar 2014 07:11:59 +0000 (15:11 +0800)]
r8169: fix the incorrect tx descriptor version
commit
f75761b6b5bf6277296505941d2dd8e11f9b5c35 upstream.
The tx descriptor version of RTL8111B belong to RTL_TD_0.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Wei Yongjun [Mon, 11 Nov 2013 06:16:16 +0000 (14:16 +0800)]
macmace: add missing platform_set_drvdata() in mace_probe()
commit
06a2feb9e3bd0d2d555ccb19607ff5583cfa03e8 upstream.
Add missing platform_set_drvdata() in mace_probe(), otherwise
calling platform_get_drvdata() in mac_mace_device_remove() may
returns NULL.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Marc Zyngier [Tue, 5 Aug 2014 15:44:39 +0000 (16:44 +0100)]
net: sun4i-emac: fix memory leak on bad packet
commit
2670cc699a66c4cf268cb3e3f6dfc325ec14f224 upstream.
Upon reception of a new frame, the emac driver checks for a number
of error conditions, and flag the packet as "bad" if any of these
are present. It then allocates a skb unconditionally, but only uses
it if the packet is "good". On the error path, the skb is just forgotten,
and the system leaks memory.
The piece of junk I have on my desk seems to encounter such error
frequently enough so that the box goes OOM after a couple of days,
which makes me grumpy.
Fix this by moving the allocation on the "good_packet" path (and
convert it to netdev_alloc_skb while we're at it).
Tested on a random Allwinner A20 board.
Cc: Stefan Roese <sr@denx.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Yan, Zheng [Wed, 30 Jul 2014 02:12:47 +0000 (10:12 +0800)]
ceph: fix kick_requests()
commit
282c105225ec3229f344c5fced795b9e1e634440 upstream.
__do_request() may unregister the request. So we should update
iterator 'p' before calling __do_request()
Signed-off-by: "Yan, Zheng" <zheng.z.yan@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Yan, Zheng [Thu, 11 Sep 2014 06:25:18 +0000 (14:25 +0800)]
ceph: protect kick_requests() with mdsc->mutex
commit
656e4382948d4b2c81bdaf707f1400f53eff2625 upstream.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Yan, Zheng [Thu, 11 Sep 2014 06:28:56 +0000 (14:28 +0800)]
ceph: make sure request isn't in any waiting list when kicking request.
commit
03974e8177b36d672eb59658f976f03cb77c1129 upstream.
we may corrupt waiting list if a request in the waiting list is kicked.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Ani Sinha [Mon, 8 Sep 2014 21:49:59 +0000 (14:49 -0700)]
net:socket: set msg_namelen to 0 if msg_name is passed as NULL in msghdr struct from userland.
commit
6a2a2b3ae0759843b22c929881cc184b00cc63ff upstream.
Linux manpage for recvmsg and sendmsg calls does not explicitly mention setting msg_namelen to 0 when
msg_name passed set as NULL. When developers don't set msg_namelen member in msghdr, it might contain garbage
value which will fail the validation check and sendmsg and recvmsg calls from kernel will return EINVAL. This will
break old binaries and any code for which there is no access to source code.
To fix this, we set msg_namelen to 0 when msg_name is passed as NULL from userland.
Signed-off-by: Ani Sinha <ani@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Vasily Averin [Sun, 4 May 2014 20:17:48 +0000 (00:17 +0400)]
bridge: superfluous skb->nfct check in br_nf_dev_queue_xmit
commit
aff09ce303f83bd370772349238482ae422a2341 upstream.
Currently bridge can silently drop ipv4 fragments.
If node have loaded nf_defrag_ipv4 module but have no nf_conntrack_ipv4,
br_nf_pre_routing defragments incoming ipv4 fragments
but nfct check in br_nf_dev_queue_xmit does not allow re-fragment combined
packet back, and therefore it is dropped in br_dev_queue_push_xmit without
incrementing of any failcounters
It seems the only way to hit the ip_fragment code in the bridge xmit
path is to have a fragment list whose reassembled fragments go over
the mtu. This only happens if nf_defrag is enabled. Thanks to
Florian Westphal for providing feedback to clarify this.
Defragmentation ipv4 is required not only in conntracks but at least in
TPROXY target and socket match, therefore #ifdef is changed from
NF_CONNTRACK_IPV4 to NF_DEFRAG_IPV4
Signed-off-by: Vasily Averin <vvs@openvz.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Anton Blanchard [Sat, 19 Oct 2013 23:26:20 +0000 (10:26 +1100)]
powerpc/pseries: Fix dedicated processor partition detection
commit
733187e29576041ceccf3b82092ca900fc929170 upstream.
commit
f13c13a00512 (powerpc: Stop using non-architected shared_proc
field in lppaca) fixed a potential issue with shared/dedicated
partition detection. The old method of detection relied on an
unarchitected field (shared_proc), and this patch switched
to using something architected (a non zero yield_count).
Unfortunately the assertion in the Linux header that yield_count
is only non zero on shared processor partitions is not true. It
turns out dedicated processor partitions can increment yield_count
and as such we falsely detect dedicated partitions as shared.
Fix the comment, and switch back to using the old method.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Holger Eitzenberger [Mon, 28 Oct 2013 13:42:33 +0000 (14:42 +0100)]
netfilter: xt_NFQUEUE: fix --queue-bypass regression
commit
d954777324ffcba0b2f8119c102237426c654eeb upstream.
V3 of the NFQUEUE target ignores the --queue-bypass flag,
causing packets to be dropped when the userspace listener
isn't running.
Regression is in since
8746ddcf12bb26 ("netfilter: xt_NFQUEUE:
introduce CPU fanout").
Reported-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Sasha Levin [Tue, 8 Sep 2015 14:53:40 +0000 (10:53 -0400)]
RDS: verify the underlying transport exists before creating a connection
[ Upstream commit
74e98eb085889b0d2d4908f59f6e00026063014f ]
There was no verification that an underlying transport exists when creating
a connection, this would cause dereferencing a NULL ptr.
It might happen on sockets that weren't properly bound before attempting to
send a message, which will cause a NULL ptr deref:
[135546.047719] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN
[135546.051270] Modules linked in:
[135546.051781] CPU: 4 PID: 15650 Comm: trinity-c4 Not tainted
4.2.0-next-20150902-sasha-00041-gbaa1222-dirty #2527
[135546.053217] task:
ffff8800835bc000 ti:
ffff8800bc708000 task.ti:
ffff8800bc708000
[135546.054291] RIP: __rds_conn_create (net/rds/connection.c:194)
[135546.055666] RSP: 0018:
ffff8800bc70fab0 EFLAGS:
00010202
[135546.056457] RAX:
dffffc0000000000 RBX:
0000000000000f2c RCX:
ffff8800835bc000
[135546.057494] RDX:
0000000000000007 RSI:
ffff8800835bccd8 RDI:
0000000000000038
[135546.058530] RBP:
ffff8800bc70fb18 R08:
0000000000000001 R09:
0000000000000000
[135546.059556] R10:
ffffed014d7a3a23 R11:
ffffed014d7a3a21 R12:
0000000000000000
[135546.060614] R13:
0000000000000001 R14:
ffff8801ec3d0000 R15:
0000000000000000
[135546.061668] FS:
00007faad4ffb700(0000) GS:
ffff880252000000(0000) knlGS:
0000000000000000
[135546.062836] CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
[135546.063682] CR2:
000000000000846a CR3:
000000009d137000 CR4:
00000000000006a0
[135546.064723] Stack:
[135546.065048]
ffffffffafe2055c ffffffffafe23fc1 ffffed00493097bf ffff8801ec3d0008
[135546.066247]
0000000000000000 00000000000000d0 0000000000000000 ac194a24c0586342
[135546.067438]
1ffff100178e1f78 ffff880320581b00 ffff8800bc70fdd0 ffff880320581b00
[135546.068629] Call Trace:
[135546.069028] ? __rds_conn_create (include/linux/rcupdate.h:856 net/rds/connection.c:134)
[135546.069989] ? rds_message_copy_from_user (net/rds/message.c:298)
[135546.071021] rds_conn_create_outgoing (net/rds/connection.c:278)
[135546.071981] rds_sendmsg (net/rds/send.c:1058)
[135546.072858] ? perf_trace_lock (include/trace/events/lock.h:38)
[135546.073744] ? lockdep_init (kernel/locking/lockdep.c:3298)
[135546.074577] ? rds_send_drop_to (net/rds/send.c:976)
[135546.075508] ? __might_fault (./arch/x86/include/asm/current.h:14 mm/memory.c:3795)
[135546.076349] ? __might_fault (mm/memory.c:3795)
[135546.077179] ? rds_send_drop_to (net/rds/send.c:976)
[135546.078114] sock_sendmsg (net/socket.c:611 net/socket.c:620)
[135546.078856] SYSC_sendto (net/socket.c:1657)
[135546.079596] ? SYSC_connect (net/socket.c:1628)
[135546.080510] ? trace_dump_stack (kernel/trace/trace.c:1926)
[135546.081397] ? ring_buffer_unlock_commit (kernel/trace/ring_buffer.c:2479 kernel/trace/ring_buffer.c:2558 kernel/trace/ring_buffer.c:2674)
[135546.082390] ? trace_buffer_unlock_commit (kernel/trace/trace.c:1749)
[135546.083410] ? trace_event_raw_event_sys_enter (include/trace/events/syscalls.h:16)
[135546.084481] ? do_audit_syscall_entry (include/trace/events/syscalls.h:16)
[135546.085438] ? trace_buffer_unlock_commit (kernel/trace/trace.c:1749)
[135546.085515] rds_ib_laddr_check(): addr 36.74.25.172 ret -99 node type -1
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Jason Wang [Wed, 5 Aug 2015 02:34:04 +0000 (10:34 +0800)]
virtio-net: drop NETIF_F_FRAGLIST
[ Upstream commit
48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39 ]
virtio declares support for NETIF_F_FRAGLIST, but assumes
that there are at most MAX_SKB_FRAGS + 2 fragments which isn't
always true with a fraglist.
A longer fraglist in the skb will make the call to skb_to_sgvec overflow
the sg array, leading to memory corruption.
Drop NETIF_F_FRAGLIST so we only get what we can handle.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Tue, 10 Nov 2015 01:51:23 +0000 (17:51 -0800)]
net: fix a race in dst_release()
[ Upstream commit
d69bbf88c8d0b367cf3e3a052f6daadf630ee566 ]
Only cpu seeing dst refcount going to 0 can safely
dereference dst->flags.
Otherwise an other cpu might already have freed the dst.
Fixes: 27b75c95f10d ("net: avoid RCU for NOCACHE dst")
Reported-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Fri, 2 Oct 2015 23:54:31 +0000 (16:54 -0700)]
net: avoid NULL deref in inet_ctl_sock_destroy()
[ Upstream commit
8fa677d2706d325d71dab91bf6e6512c05214e37 ]
Under low memory conditions, tcp_sk_init() and icmp_sk_init()
can both iterate on all possible cpus and call inet_ctl_sock_destroy(),
with eventual NULL pointer.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Eric Dumazet [Fri, 2 Oct 2015 23:54:31 +0000 (16:54 -0700)]
sit: fix sit0 percpu double allocations
[ Upstream commit
4ece9009774596ee3df0acba65a324b7ea79387c ]
sit0 device allocates its percpu storage twice :
- One time in ipip6_tunnel_init()
- One time in ipip6_fb_tunnel_init()
Thus we leak 48 bytes per possible cpu per network namespace dismantle.
ipip6_fb_tunnel_init() can be much simpler and does not
return an error, and should be called after register_netdev()
Note that ipip6_tunnel_clone_6rd() also needs to be called
after register_netdev() (calling ipip6_tunnel_init())
Fixes: ebe084aafb7e ("sit: Use ipip6_tunnel_init as the ndo_init function.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Bjørn Mork [Thu, 1 Oct 2015 23:54:31 +0000 (16:54 -0700)]
qmi_wwan: fix entry for HP lt4112 LTE/HSPA+ Gobi 4G Module
[ Upstream commit
70910791731b5956171e1bfcad707766b8e18fee ]
The lt4112 is a HP branded Huawei me906e modem. Like other Huawei
modems, it does not have a fixed interface to function mapping.
Instead it uses a Huawei specific scheme: functions are mapped by
subclass and protocol.
However, the HP vendor ID is used for modems from many different
manufacturers using different schemes, so we cannot apply a generic
vendor rule like we do for the Huawei vendor ID.
Replace the previous lt4112 entry pointing to an arbitrary interface
number with a device specific subclass + protocol match.
Reported-and-tested-by: Muri Nicanor <muri+libqmi@immerda.ch>
Tested-by: Martin Hauke <mardnh@gmx.de>
Fixes: bb2bdeb83fb1 ("qmi_wwan: Add support for HP lt4112 LTE/HSPA+ Gobi 4G Modem")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Ani Sinha [Fri, 30 Oct 2015 23:54:31 +0000 (16:54 -0700)]
ipmr: fix possible race resulting from improper usage of IP_INC_STATS_BH() in preemptible context.
[ Upstream commit
44f49dd8b5a606870a1f21101522a0f9c4414784 ]
Fixes the following kernel BUG :
BUG: using __this_cpu_add() in preemptible [
00000000] code: bash/2758
caller is __this_cpu_preempt_check+0x13/0x15
CPU: 0 PID: 2758 Comm: bash Tainted: P O 3.18.19 #2
ffffffff8170eaca ffff880110d1b788 ffffffff81482b2a 0000000000000000
0000000000000000 ffff880110d1b7b8 ffffffff812010ae ffff880007cab800
ffff88001a060800 ffff88013a899108 ffff880108b84240 ffff880110d1b7c8
Call Trace:
[<
ffffffff81482b2a>] dump_stack+0x52/0x80
[<
ffffffff812010ae>] check_preemption_disabled+0xce/0xe1
[<
ffffffff812010d4>] __this_cpu_preempt_check+0x13/0x15
[<
ffffffff81419d60>] ipmr_queue_xmit+0x647/0x70c
[<
ffffffff8141a154>] ip_mr_forward+0x32f/0x34e
[<
ffffffff8141af76>] ip_mroute_setsockopt+0xe03/0x108c
[<
ffffffff810553fc>] ? get_parent_ip+0x11/0x42
[<
ffffffff810e6974>] ? pollwake+0x4d/0x51
[<
ffffffff81058ac0>] ? default_wake_function+0x0/0xf
[<
ffffffff810553fc>] ? get_parent_ip+0x11/0x42
[<
ffffffff810613d9>] ? __wake_up_common+0x45/0x77
[<
ffffffff81486ea9>] ? _raw_spin_unlock_irqrestore+0x1d/0x32
[<
ffffffff810618bc>] ? __wake_up_sync_key+0x4a/0x53
[<
ffffffff8139a519>] ? sock_def_readable+0x71/0x75
[<
ffffffff813dd226>] do_ip_setsockopt+0x9d/0xb55
[<
ffffffff81429818>] ? unix_seqpacket_sendmsg+0x3f/0x41
[<
ffffffff813963fe>] ? sock_sendmsg+0x6d/0x86
[<
ffffffff813959d4>] ? sockfd_lookup_light+0x12/0x5d
[<
ffffffff8139650a>] ? SyS_sendto+0xf3/0x11b
[<
ffffffff810d5738>] ? new_sync_read+0x82/0xaa
[<
ffffffff813ddd19>] compat_ip_setsockopt+0x3b/0x99
[<
ffffffff813fb24a>] compat_raw_setsockopt+0x11/0x32
[<
ffffffff81399052>] compat_sock_common_setsockopt+0x18/0x1f
[<
ffffffff813c4d05>] compat_SyS_setsockopt+0x1a9/0x1cf
[<
ffffffff813c4149>] compat_SyS_socketcall+0x180/0x1e3
[<
ffffffff81488ea1>] cstar_dispatch+0x7/0x1e
Signed-off-by: Ani Sinha <ani@arista.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Phil Reid [Fri, 30 Oct 2015 08:43:55 +0000 (16:43 +0800)]
stmmac: Correctly report PTP capabilities.
[ Upstream commit
e6dbe1eb2db0d7a14991c06278dd3030c45fb825 ]
priv->hwts_*_en indicate if timestamping is enabled/disabled at run
time. But priv->dma_cap.time_stamp and priv->dma_cap.atime_stamp
indicates HW is support for PTPv1/PTPv2.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Carol L Soto [Tue, 27 Oct 2015 15:36:20 +0000 (17:36 +0200)]
net/mlx4: Copy/set only sizeof struct mlx4_eqe bytes
[ Upstream commit
c02b05011fadf8e409e41910217ca689f2fc9d91 ]
When doing memcpy/memset of EQEs, we should use sizeof struct
mlx4_eqe as the base size and not caps.eqe_size which could be bigger.
If caps.eqe_size is bigger than the struct mlx4_eqe then we corrupt
data in the master context.
When using a 64 byte stride, the memcpy copied over 63 bytes to the
slave_eq structure. This resulted in copying over the entire eqe of
interest, including its ownership bit -- and also 31 bytes of garbage
into the next WQE in the slave EQ -- which did NOT include the ownership
bit (and therefore had no impact).
However, once the stride is increased to 128, we are overwriting the
ownership bits of *three* eqes in the slave_eq struct. This results
in an incorrect ownership bit for those eqes, which causes the eq to
seem to be full. The issue therefore surfaced only once 128-byte EQEs
started being used in SRIOV and (overarchitectures that have 128/256
byte cache-lines such as PPC) - e.g after commit
77507aa249ae
"net/mlx4_core: Enable CQE/EQE stride support".
Fixes: 08ff32352d6f ('mlx4: 64-byte CQE/EQE support')
Signed-off-by: Carol L Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Sowmini Varadhan [Mon, 26 Oct 2015 16:46:37 +0000 (12:46 -0400)]
RDS-TCP: Recover correctly from pskb_pull()/pksb_trim() failure in rds_tcp_data_recv
[ Upstream commit
8ce675ff39b9958d1c10f86cf58e357efaafc856 ]
Either of pskb_pull() or pskb_trim() may fail under low memory conditions.
If rds_tcp_data_recv() ignores such failures, the application will
receive corrupted data because the skb has not been correctly
carved to the RDS datagram size.
Avoid this by handling pskb_pull/pskb_trim failure in the same
manner as the skb_clone failure: bail out of rds_tcp_data_recv(), and
retry via the deferred call to rds_send_worker() that gets set up on
ENOMEM from rds_tcp_read_sock()
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Guillaume Nault [Thu, 22 Oct 2015 14:57:10 +0000 (16:57 +0200)]
ppp: fix pppoe_dev deletion condition in pppoe_release()
[ Upstream commit
1acea4f6ce1b1c0941438aca75dd2e5c6b09db60 ]
We can't rely on PPPOX_ZOMBIE to decide whether to clear po->pppoe_dev.
PPPOX_ZOMBIE can be set by pppoe_disc_rcv() even when po->pppoe_dev is
NULL. So we have no guarantee that (sk->sk_state & PPPOX_ZOMBIE) implies
(po->pppoe_dev != NULL).
Since we're releasing a PPPoE socket, we want to release the pppoe_dev
if it exists and reset sk_state to PPPOX_DEAD, no matter the previous
value of sk_state. So we can just check for po->pppoe_dev and avoid any
assumption on sk->sk_state.
Fixes: 2b018d57ff18 ("pppoe: drop PPPOX_ZOMBIEs in pppoe_release")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Jason Wang [Fri, 23 Oct 2015 04:57:05 +0000 (00:57 -0400)]
macvtap: unbreak receiving of gro skb with frag list
[ Upstream commit
f23d538bc24a83c16127c2eb82c9cf1adc2b5149 ]
We don't have fraglist support in TAP_FEATURES. This will lead
software segmentation of gro skb with frag list. Fixes by having
frag list support in TAP_FEATURES.
With this patch single session of netperf receiving were restored from
about 5Gb/s to about 12Gb/s on mlx4.
Fixes
a567dd6252 ("macvtap: simplify usage of tap_features")
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Dan Carpenter [Mon, 19 Oct 2015 10:16:49 +0000 (13:16 +0300)]
irda: precedence bug in irlmp_seq_hb_idx()
[ Upstream commit
50010c20597d14667eff0fdb628309986f195230 ]
This is decrementing the pointer, instead of the value stored in the
pointer. KASan detects it as an out of bounds reference.
Reported-by: "Berry Cheng 程君(成淼)" <chengmiao.cj@alibaba-inc.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Tom Tucker [Tue, 25 Mar 2014 20:14:57 +0000 (15:14 -0500)]
Fix regression in NFSRDMA server
commit
7e4359e2611f95a97037e2b6905eab52f28afbeb upstream.
The server regression was caused by the addition of rq_next_page
(
afc59400d6c65bad66d4ad0b2daf879cbff8e23e). There were a few places that
were missed with the update of the rq_respages array.
Signed-off-by: Tom Tucker <tom@ogc.us>
Tested-by: Steve Wise <swise@ogc.us>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Dan Williams [Fri, 8 May 2015 19:23:55 +0000 (15:23 -0400)]
ahci: avoton port-disable reset-quirk
commit
dbfe8ef5599a5370abc441fcdbb382b656563eb4 upstream.
Avoton AHCI occasionally sees drive probe timeouts at driver load time.
When this happens SCR_STATUS indicates device detected, but no D2H FIS
reception. Reset the internal link state machines by bouncing
port-enable in the PCS register when this occurs.
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Hans de Goede [Sat, 22 Feb 2014 15:53:30 +0000 (16:53 +0100)]
libahci: Allow drivers to override start_engine
commit
039ece38da45f5e6a94be3aa7611cf3634bc2461 upstream.
Allwinner A10 and A20 ARM SoCs have an AHCI sata controller which needs a
special register to be poked before starting the DMA engine.
This register gets reset on an ahci_stop_engine call, so there is no other
place then ahci_start_engine where this poking can be done.
This commit allows drivers to override ahci_start_engine behavior for use by
the Allwinner AHCI driver (and potentially other drivers in the future).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Paul Moore [Tue, 30 Dec 2014 14:26:21 +0000 (09:26 -0500)]
audit: create private file name copies when auditing inodes
commit
fcf22d8267ad2601fe9b6c549d1be96401c23e0b upstream.
Unfortunately, while commit
4a928436 ("audit: correctly record file
names with different path name types") fixed a problem where we were
not recording filenames, it created a new problem by attempting to use
these file names after they had been freed. This patch resolves the
issue by creating a copy of the filename which the audit subsystem
frees after it is done with the string.
At some point it would be nice to resolve this issue with refcounts,
or something similar, instead of having to allocate/copy strings, but
that is almost surely beyond the scope of a -rcX patch so we'll defer
that for later. On the plus side, only audit users should be impacted
by the string copying.
Reported-by: Toralf Foerster <toralf.foerster@gmx.de>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Paul Moore [Mon, 22 Dec 2014 17:27:39 +0000 (12:27 -0500)]
audit: correctly record file names with different path name types
commit
4a92843601ad0f5067f441d2f0dca55bbe18c076 upstream.
There is a problem with the audit system when multiple audit records
are created for the same path, each with a different path name type.
The root cause of the problem is in __audit_inode() when an exact
match (both the path name and path name type) is not found for a
path name record; the existing code creates a new path name record,
but it never sets the path name in this record, leaving it NULL.
This patch corrects this problem by assigning the path name to these
newly created records.
There are many ways to reproduce this problem, but one of the
easiest is the following (assuming auditd is running):
# mkdir /root/tmp/test
# touch /root/tmp/test/567
# auditctl -a always,exit -F dir=/root/tmp/test
# touch /root/tmp/test/567
Afterwards, or while the commands above are running, check the audit
log and pay special attention to the PATH records. A faulty kernel
will display something like the following for the file creation:
type=SYSCALL msg=audit(
1416957442.025:93): arch=
c000003e syscall=2
success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
type=CWD msg=audit(
1416957442.025:93): cwd="/root/tmp"
type=PATH msg=audit(
1416957442.025:93): item=0 name="test/"
inode=401409 ... nametype=PARENT
type=PATH msg=audit(
1416957442.025:93): item=1 name=(null)
inode=393804 ... nametype=NORMAL
type=PATH msg=audit(
1416957442.025:93): item=2 name=(null)
inode=393804 ... nametype=NORMAL
While a patched kernel will show the following:
type=SYSCALL msg=audit(
1416955786.566:89): arch=
c000003e syscall=2
success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
type=CWD msg=audit(
1416955786.566:89): cwd="/root/tmp"
type=PATH msg=audit(
1416955786.566:89): item=0 name="test/"
inode=401409 ... nametype=PARENT
type=PATH msg=audit(
1416955786.566:89): item=1 name="test/567"
inode=393804 ... nametype=NORMAL
This issue was brought up by a number of people, but special credit
should go to hujianyang@huawei.com for reporting the problem along
with an explanation of the problem and a patch. While the original
patch did have some problems (see the archive link below), it did
demonstrate the problem and helped kickstart the fix presented here.
* https://lkml.org/lkml/2014/9/5/66
Reported-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Dan Carpenter [Fri, 3 Jul 2015 08:53:03 +0000 (11:53 +0300)]
mptfusion: prevent some memory corruption
commit
e819cdb198319cccf4af4fc12ac4d796109d8c23 upstream.
These are signed values the come from the user, we put a cap on the
upper bounds but not on the lower bounds.
We use "karg.dataSgeOffset" to calculate "sz". We verify "sz" and
proceed as if that means that "karg.dataSgeOffset" is correct but this
fails to consider that the "sz" calculations can have integer overflows.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Charles Keepax [Tue, 7 Jul 2015 14:28:13 +0000 (15:28 +0100)]
mfd: wm5110: Add register patch for rev E and above
commit
81207880cef207cd89db863f9aa1d65f22b4f2a2 upstream.
Add a register patch for rev E and above that configures the location of
some write sequences to assist with the headphone enables.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Charles Keepax [Thu, 9 Jan 2014 11:53:54 +0000 (11:53 +0000)]
mfd: wm5110: Add register patch for rev D chip
commit
02915661dbb91b25b621ab3f387ab55311bded7f upstream.
Evaluation of revision D of WM5110 suggests updates to the register
patch for optimal performance. For the sake of clarity rev C of the chip
does not require a register patch.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Soeren Grunewald [Thu, 11 Jun 2015 07:25:04 +0000 (09:25 +0200)]
serial: 8250_pci: Add support for 12 port Exar boards
commit
be32c0cf0462c36f482b5ddcff1d8371be1e183c upstream.
The Exar XR17V358 can also be combined with a XR17V354 chip to act as a
single 12 port chip. This works the same way as the combining two XR17V358
chips. But the reported device id then is 0x4358.
Signed-off-by: Soeren Grunewald <soeren.grunewald@desy.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Soeren Grunewald [Tue, 28 Apr 2015 14:29:49 +0000 (16:29 +0200)]
serial: 8250_pci: Add support for 16 port Exar boards
commit
96a5d18bc1338786fecac73599f1681f59a59a8e upstream.
The Exar XR17V358 chip usually provides only 8 ports. But two chips can be
combined to act as a single 16 port chip. Therefor one chip is configured
as master the second as slave by connecting the mode pin to VCC (master)
or GND (slave).
Then the master chip is reporting a different device-id depending on
whether a slave is detected or not. The UARTs 8-15 are addressed from
0x2000-0x3fff. So the offset of 0x400 from UART to UART can be used to
address all 16 ports as before.
See: https://www.exar.com/common/content/document.ashx?id=1587 page 11
Signed-off-by: Soeren Grunewald <soeren.grunewald@desy.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Doron Tsur [Sun, 11 Oct 2015 12:58:17 +0000 (15:58 +0300)]
IB/cm: Fix rb-tree duplicate free and use-after-free
commit
0ca81a2840f77855bbad1b9f172c545c4dc9e6a4 upstream.
ib_send_cm_sidr_rep could sometimes erase the node from the sidr
(depending on errors in the process). Since ib_send_cm_sidr_rep is
called both from cm_sidr_req_handler and cm_destroy_id, cm_id_priv
could be either erased from the rb_tree twice or not erased at all.
Fixing that by making sure it's erased only once before freeing
cm_id_priv.
Fixes: a977049dacde ('[PATCH] IB: Add the kernel CM implementation')
Signed-off-by: Doron Tsur <doront@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Dāvis Mosāns [Fri, 21 Aug 2015 04:29:22 +0000 (07:29 +0300)]
mvsas: Fix NULL pointer dereference in mvs_slot_task_free
commit
2280521719e81919283b82902ac24058f87dfc1b upstream.
When pci_pool_alloc fails in mvs_task_prep then task->lldd_task stays
NULL but it's later used in mvs_abort_task as slot which is passed
to mvs_slot_task_free causing NULL pointer dereference.
Just return from mvs_slot_task_free when passed with NULL slot.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=101891
Signed-off-by: Dāvis Mosāns <davispuh@gmail.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Jes Sorensen [Tue, 20 Oct 2015 16:09:13 +0000 (12:09 -0400)]
md/raid10: submit_bio_wait() returns 0 on success
commit
681ab4696062f5aa939c9e04d058732306a97176 upstream.
This was introduced with
9e882242c6193ae6f416f2d8d8db0d9126bd996b
which changed the return value of submit_bio_wait() to return != 0 on
error, but didn't update the caller accordingly.
Fixes: 9e882242c6 ("block: Add submit_bio_wait(), remove from md")
Reported-by: Bill Kuzeja <William.Kuzeja@stratus.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Jes Sorensen [Tue, 20 Oct 2015 16:09:12 +0000 (12:09 -0400)]
md/raid1: submit_bio_wait() returns 0 on success
commit
203d27b0226a05202438ddb39ef0ef1acb14a759 upstream.
This was introduced with
9e882242c6193ae6f416f2d8d8db0d9126bd996b
which changed the return value of submit_bio_wait() to return != 0 on
error, but didn't update the caller accordingly.
Fixes: 9e882242c6 ("block: Add submit_bio_wait(), remove from md")
Reported-by: Bill Kuzeja <William.Kuzeja@stratus.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Herbert Xu [Mon, 19 Oct 2015 10:23:57 +0000 (18:23 +0800)]
crypto: api - Only abort operations on fatal signal
commit
3fc89adb9fa4beff31374a4bf50b3d099d88ae83 upstream.
Currently a number of Crypto API operations may fail when a signal
occurs. This causes nasty problems as the caller of those operations
are often not in a good position to restart the operation.
In fact there is currently no need for those operations to be
interrupted by user signals at all. All we need is for them to
be killable.
This patch replaces the relevant calls of signal_pending with
fatal_signal_pending, and wait_for_completion_interruptible with
wait_for_completion_killable, respectively.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Peter Zijlstra [Thu, 20 Aug 2015 01:04:59 +0000 (10:34 +0930)]
module: Fix locking in symbol_put_addr()
commit
275d7d44d802ef271a42dc87ac091a495ba72fc5 upstream.
Poma (on the way to another bug) reported an assertion triggering:
[<
ffffffff81150529>] module_assert_mutex_or_preempt+0x49/0x90
[<
ffffffff81150822>] __module_address+0x32/0x150
[<
ffffffff81150956>] __module_text_address+0x16/0x70
[<
ffffffff81150f19>] symbol_put_addr+0x29/0x40
[<
ffffffffa04b77ad>] dvb_frontend_detach+0x7d/0x90 [dvb_core]
Laura Abbott <labbott@redhat.com> produced a patch which lead us to
inspect symbol_put_addr(). This function has a comment claiming it
doesn't need to disable preemption around the module lookup
because it holds a reference to the module it wants to find, which
therefore cannot go away.
This is wrong (and a false optimization too, preempt_disable() is really
rather cheap, and I doubt any of this is on uber critical paths,
otherwise it would've retained a pointer to the actual module anyway and
avoided the second lookup).
While its true that the module cannot go away while we hold a reference
on it, the data structure we do the lookup in very much _CAN_ change
while we do the lookup. Therefore fix the comment and add the
required preempt_disable().
Reported-by: poma <pomidorabelisima@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Fixes: a6e6abd575fc ("module: remove module_text_address()")
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cathy Avery [Fri, 2 Oct 2015 13:35:01 +0000 (09:35 -0400)]
xen-blkfront: check for null drvdata in blkback_changed (XenbusStateClosing)
commit
a54c8f0f2d7df525ff997e2afe71866a1a013064 upstream.
xen-blkfront will crash if the check to talk_to_blkback()
in blkback_changed()(XenbusStateInitWait) returns an error.
The driver data is freed and info is set to NULL. Later during
the close process via talk_to_blkback's call to xenbus_dev_fatal()
the null pointer is passed to and dereference in blkfront_closing.
Signed-off-by: Cathy Avery <cathy.avery@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Laura Abbott [Mon, 12 Oct 2015 08:30:13 +0000 (11:30 +0300)]
xhci: Add spurious wakeup quirk for LynxPoint-LP controllers
commit
fd7cd061adcf5f7503515ba52b6a724642a839c8 upstream.
We received several reports of systems rebooting and powering on
after an attempted shutdown. Testing showed that setting
XHCI_SPURIOUS_WAKEUP quirk in addition to the XHCI_SPURIOUS_REBOOT
quirk allowed the system to shutdown as expected for LynxPoint-LP
xHCI controllers. Set the quirk back.
Note that the quirk was originally introduced for LynxPoint and
LynxPoint-LP just for this same reason. See:
commit
638298dc66ea ("xhci: Fix spurious wakeups after S5 on Haswell")
It was later limited to only concern HP machines as it caused
regression on some machines, see both bug and commit:
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=66171
commit
6962d914f317 ("xhci: Limit the spurious wakeup fix only to HP machines")
Later it was discovered that the powering on after shutdown
was limited to LynxPoint-LP (Haswell-ULT) and that some non-LP HP
machine suffered from spontaneous resume from S3 (which should
not be related to the SPURIOUS_WAKEUP quirk at all). An attempt
to fix this then removed the SPURIOUS_WAKEUP flag usage completely.
commit
b45abacde3d5 ("xhci: no switching back on non-ULT Haswell")
Current understanding is that LynxPoint-LP (Haswell ULT) machines
need the SPURIOUS_WAKEUP quirk, otherwise they will restart, and
plain Lynxpoint (Haswell) machines may _not_ have the quirk
set otherwise they again will restart.
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Oliver Neukum <oneukum@suse.com>
[Added more history to commit message -Mathias]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Mathias Nyman [Mon, 12 Oct 2015 08:30:12 +0000 (11:30 +0300)]
xhci: handle no ping response error properly
commit
3b4739b8951d650becbcd855d7d6f18ac98a9a85 upstream.
If a host fails to wake up a isochronous SuperSpeed device from U1/U2
in time for a isoch transfer it will generate a "No ping response error"
Host will then move to the next transfer descriptor.
Handle this case in the same way as missed service errors, tag the
current TD as skipped and handle it on the next transfer event.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Mike Snitzer [Thu, 22 Oct 2015 14:56:40 +0000 (10:56 -0400)]
dm btree: fix leak of bufio-backed block in btree_split_beneath error path
commit
4dcb8b57df3593dcb20481d9d6cf79d1dc1534be upstream.
btree_split_beneath()'s error path had an outstanding FIXME that speaks
directly to the potential for _not_ cleaning up a previously allocated
bufio-backed block.
Fix this by releasing the previously allocated bufio block using
unlock_block().
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <thornber@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Will Deacon [Wed, 28 Oct 2015 16:56:13 +0000 (16:56 +0000)]
Revert "ARM64: unwind: Fix PC calculation"
commit
9702970c7bd3e2d6fecb642a190269131d4ac16c upstream.
This reverts commit
e306dfd06fcb44d21c80acb8e5a88d55f3d1cf63.
With this patch applied, we were the only architecture making this sort
of adjustment to the PC calculation in the unwinder. This causes
problems for ftrace, where the PC values are matched against the
contents of the stack frames in the callchain and fail to match any
records after the address adjustment.
Whilst there has been some effort to change ftrace to workaround this,
those patches are not yet ready for mainline and, since we're the odd
architecture in this regard, let's just step in line with other
architectures (like arch/arm/) for now.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Ronny Hegewald [Thu, 15 Oct 2015 18:50:46 +0000 (18:50 +0000)]
rbd: require stable pages if message data CRCs are enabled
commit
bae818ee1577c27356093901a0ea48f672eda514 upstream.
rbd requires stable pages, as it performs a crc of the page data before
they are send to the OSDs.
But since kernel 3.9 (patch
1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0
"mm: only enforce stable page writes if the backing device requires
it") it is not assumed anymore that block devices require stable pages.
This patch sets the necessary flag to get stable pages back for rbd.
In a ceph installation that provides multiple ext4 formatted rbd
devices "bad crc" messages appeared regularly (ca 1 message every 1-2
minutes on every OSD that provided the data for the rbd) in the
OSD-logs before this patch. After this patch this messages are pretty
much gone (only ca 1-2 / month / OSD).
Signed-off-by: Ronny Hegewald <Ronny.Hegewald@online.de>
[idryomov@gmail.com: require stable pages only in crc case, changelog]
[idryomov@gmail.com: backport to 3.9-3.17: context]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Ilia Mirkin [Tue, 20 Oct 2015 05:15:39 +0000 (01:15 -0400)]
drm/nouveau/gem: return only valid domain when there's only one
commit
2a6c521bb41ce862e43db46f52e7681d33e8d771 upstream.
On nv50+, we restrict the valid domains to just the one where the buffer
was originally created. However after the buffer is evicted to system
memory, we might move it back to a different domain that was not
originally valid. When sharing the buffer and retrieving its GEM_INFO
data, we still want the domain that will be valid for this buffer in a
pushbuf, not the one where it currently happens to be.
This resolves fdo#92504 and several others. These are due to suspend
evicting all buffers, making it more likely that they temporarily end up
in the wrong place.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92504
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
SeongJae Park [Tue, 4 Feb 2014 06:58:09 +0000 (15:58 +0900)]
spi: fix pointer-integer size mismatch warning
commit
e1bde3b11fedace5042f0232339da90bc85666af upstream.
Fix the pointer-integer size mismatch warning below:
drivers/spi/spi-gpio.c: In function ‘spi_gpio_setup’:
drivers/spi/spi-gpio.c:252:8: warning: cast from pointer to integer of
different size [-Wpointer-to-int-cast]
cs = (unsigned int) spi->controller_data;
^
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Lad, Prabhakar [Thu, 4 Dec 2014 14:56:04 +0000 (14:56 +0000)]
power: bq24190_charger: suppress build warning
commit
31f50e48e3e4ea9d503285a389d6a1b5349d66c0 upstream.
This patch fixes following build warning:
In file included from include/linux/printk.h:261:0,
from include/linux/kernel.h:13,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/power/bq24190_charger.c:11:
drivers/power/bq24190_charger.c: In function ‘bq24190_irq_handler_thread’:
include/linux/dynamic_debug.h:86:20: warning: ‘ss_reg’ may be used uninitialized in this function [-Wmaybe-uninitialized]
__dynamic_dev_dbg(&descriptor, dev, fmt, \
^
drivers/power/bq24190_charger.c:1211:5: note: ‘ss_reg’ was declared here
u8 ss_reg, f_reg;
^
In file included from include/linux/printk.h:261:0,
from include/linux/kernel.h:13,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/power/bq24190_charger.c:11:
include/linux/dynamic_debug.h:86:20: warning: ‘f_reg’ may be used uninitialized in this function [-Wmaybe-uninitialized]
__dynamic_dev_dbg(&descriptor, dev, fmt, \
^
drivers/power/bq24190_charger.c:1211:13: note: ‘f_reg’ was declared here
u8 ss_reg, f_reg;
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
David S. Miller [Fri, 17 Apr 2015 19:15:40 +0000 (15:15 -0400)]
sfc: Fix memcpy() with const destination compiler warning.
commit
1d20a16062e771b6e26b843c0cde3b17c1146e00 upstream.
drivers/net/ethernet/sfc/selftest.c: In function ‘efx_iterate_state’:
drivers/net/ethernet/sfc/selftest.c:388:9: warning: passing argument 1 of ‘memcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-array-qualifiers]
This is because the msg[] member of struct efx_loopback_payload
is marked as 'const'. Remove that.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Jan Kara [Thu, 22 Oct 2015 20:32:21 +0000 (13:32 -0700)]
mm: make sendfile(2) killable
commit
296291cdd1629c308114504b850dc343eabc2782 upstream.
Currently a simple program below issues a sendfile(2) system call which
takes about 62 days to complete in my test KVM instance.
int fd;
off_t off = 0;
fd = open("file", O_RDWR | O_TRUNC | O_SYNC | O_CREAT, 0644);
ftruncate(fd, 2);
lseek(fd, 0, SEEK_END);
sendfile(fd, fd, &off, 0xfffffff);
Now you should not ask kernel to do a stupid stuff like copying 256MB in
2-byte chunks and call fsync(2) after each chunk but if you do, sysadmin
should have a way to stop you.
We actually do have a check for fatal_signal_pending() in
generic_perform_write() which triggers in this path however because we
always succeed in writing something before the check is done, we return
value > 0 from generic_perform_write() and thus the information about
signal gets lost.
Fix the problem by doing the signal check before writing anything. That
way generic_perform_write() returns -EINTR, the error gets propagated up
and the sendfile loop terminates early.
Signed-off-by: Jan Kara <jack@suse.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Charles Keepax [Tue, 20 Oct 2015 09:25:58 +0000 (10:25 +0100)]
ASoC: wm8904: Correct number of EQ registers
commit
97aff2c03a1e4d343266adadb52313613efb027f upstream.
There are 24 EQ registers not 25, I suspect this bug came about because
the registers start at EQ1 not zero. The bug is relatively harmless as
the extra register written is an unused one.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Vasant Hegde [Fri, 16 Oct 2015 10:23:29 +0000 (15:53 +0530)]
powerpc/rtas: Validate rtas.entry before calling enter_rtas()
commit
8832317f662c06f5c06e638f57bfe89a71c9b266 upstream.
Currently we do not validate rtas.entry before calling enter_rtas(). This
leads to a kernel oops when user space calls rtas system call on a powernv
platform (see below). This patch adds code to validate rtas.entry before
making enter_rtas() call.
Oops: Exception in kernel mode, sig: 4 [#1]
SMP NR_CPUS=1024 NUMA PowerNV
task:
c000000004294b80 ti:
c0000007e1a78000 task.ti:
c0000007e1a78000
NIP:
0000000000000000 LR:
0000000000009c14 CTR:
c000000000423140
REGS:
c0000007e1a7b920 TRAP: 0e40 Not tainted (3.18.17-340.el7_1.pkvm3_1_0.2400.1.ppc64le)
MSR:
1000000000081000 <HV,ME> CR:
00000000 XER:
00000000
CFAR:
c000000000009c0c SOFTE: 0
NIP [
0000000000000000] (null)
LR [
0000000000009c14] 0x9c14
Call Trace:
[
c0000007e1a7bba0] [
c00000000041a7f4] avc_has_perm_noaudit+0x54/0x110 (unreliable)
[
c0000007e1a7bd80] [
c00000000002ddc0] ppc_rtas+0x150/0x2d0
[
c0000007e1a7be30] [
c000000000009358] syscall_exit+0x0/0x98
Fixes: 55190f88789a ("powerpc: Add skeleton PowerNV platform")
Reported-by: NAGESWARA R. SASTRY <nasastry@in.ibm.com>
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
[mpe: Reword change log, trim oops, and add stable + fixes]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Joerg Roedel [Tue, 20 Oct 2015 12:59:36 +0000 (14:59 +0200)]
iommu/amd: Don't clear DTE flags when modifying it
commit
cbf3ccd09d683abf1cacd36e3640872ee912d99b upstream.
During device assignment/deassignment the flags in the DTE
get lost, which might cause spurious faults, for example
when the device tries to access the system management range.
Fix this by not clearing the flags with the rest of the DTE.
Reported-by: G. Richard Bellamy <rbellamy@pteradigm.com>
Tested-by: G. Richard Bellamy <rbellamy@pteradigm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Johannes Berg [Tue, 15 Sep 2015 12:36:09 +0000 (14:36 +0200)]
iwlwifi: mvm: fix D3 firmware PN programming
commit
2cf5eb3ab7bb7f2e3a70edcef236cd62c87db030 upstream.
The code to send the RX PN data (for each TID) to the firmware
has a devastating bug: it overwrites the data for TID 0 with
all the TID data, leaving the remaining TIDs zeroed. This will
allow replays to actually be accepted by the firmware, which
could allow waking up the system.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
projects / wrapfs-5.3.y.git / log