Greg Kroah-Hartman [Sun, 21 Oct 2012 16:32:56 +0000 (09:32 -0700)]
Linux 3.6.3
Maxim Kachur [Wed, 17 Oct 2012 16:18:10 +0000 (18:18 +0200)]
ALSA: emu10k1: add chip details for E-mu 1010 PCIe card
commit
10f571d09106c3eb85951896522c9650596eff2e upstream.
Add chip details for E-mu 1010 PCIe card. It has the same
chip as found in E-mu 1010b but it uses different PCI id.
Signed-off-by: Maxim Kachur <mcdebugger@duganet.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Thu, 11 Oct 2012 14:43:40 +0000 (16:43 +0200)]
ALSA: ac97 - Fix missing NULL check in snd_ac97_cvol_new()
commit
733a48e5ae5bf28b046fad984d458c747cbb8c21 upstream.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=44721
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Ujfalusi [Tue, 2 Oct 2012 12:31:16 +0000 (15:31 +0300)]
ASoC: omap-abe-twl6040: Fix typo of Vibrator
commit
034940a6b3afbe79022ab6922dd9d2982b78e6d5 upstream.
It is not Vinrator but Vibrator.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mark Brown [Tue, 2 Oct 2012 18:10:43 +0000 (19:10 +0100)]
ASoC: wm2200: Fix non-inverted OUT2 mute control
commit
a1b98e12b7f8fad2f0aa3c08a3302bcac7ae1ec7 upstream.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mark Brown [Tue, 2 Oct 2012 11:02:48 +0000 (12:02 +0100)]
ASoC: wm2200: Use rev A register patches on rev B
commit
5ae9eb4cbdfd640269dbd66aa3c92ea8e11cc838 upstream.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Guennadi Liakhovetski [Wed, 3 Oct 2012 12:33:50 +0000 (14:33 +0200)]
ASoC: fsi: don't reschedule DMA from an atomic context
commit
57451e437796548d658d03c2c4aab659eafcd799 upstream.
shdma doesn't support transfer re-scheduling or triggering from callbacks
or from atomic context. The fsi driver issues DMA transfers from a tasklet
context, which is a bug. To fix it convert tasklet to a work.
Reported-by: Do Q.Thang <dq-thang@jinso.co.jp>
Tested-by: Do Q.Thang <dq-thang@jinso.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Henningsson [Wed, 17 Oct 2012 10:43:44 +0000 (12:43 +0200)]
ALSA: hda - Always check array bounds in alc_get_line_out_pfx
commit
71aa5ebe36a4e936eff281b375a4707b6a8320f2 upstream.
Even when CONFIG_SND_DEBUG is not enabled, we don't want to
return an arbitrary memory location when the channel count is
larger than we expected.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Tue, 16 Oct 2012 14:52:26 +0000 (16:52 +0200)]
ALSA: hda - Stop LPIB delay counting on broken hardware
commit
1f04661fde9deda4a2cd5845258715a22d8af197 upstream.
If LPIB reports a pretty bad value, we can't trust such hardware for
calculating the PCM delay. Automatically turn off the delay counting
when such a problem is encountered.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=48911
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Fri, 12 Oct 2012 15:28:18 +0000 (17:28 +0200)]
ALSA: hda - Fix registration race of VGA switcheroo
commit
128960a9ad67e2d119738f5211956e0304517551 upstream.
Delay the registration of VGA switcheroo client to the end of the
probing. Otherwise a too quick switching may result in Oops during
probing.
Also add the check of the return value from snd_hda_lock_devices().
Reported-and-tested-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fabio Porcedda [Fri, 7 Sep 2012 13:27:42 +0000 (15:27 +0200)]
usb: gadget: at91_udc: fix dt support
commit
9c6d196d5aa35e07482f23c3e37755e7a82140e0 upstream.
Don't fail the initialization check for the platform_data
if there is avaiable an associated device tree node.
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Thu, 27 Sep 2012 14:09:33 +0000 (16:09 +0200)]
tpm: Propagate error from tpm_transmit to fix a timeout hang
commit
abce9ac292e13da367bbd22c1f7669f988d931ac upstream.
tpm_write calls tpm_transmit without checking the return value and
assigns the return value unconditionally to chip->pending_data, even if
it's an error value.
This causes three bugs.
So if we write to /dev/tpm0 with a tpm_param_size bigger than
TPM_BUFSIZE=0x1000 (e.g. 0x100a)
and a bufsize also bigger than TPM_BUFSIZE (e.g. 0x100a)
tpm_transmit returns -E2BIG which is assigned to chip->pending_data as
-7, but tpm_write returns that TPM_BUFSIZE bytes have been successfully
been written to the TPM, altough this is not true (bug #1).
As we did write more than than TPM_BUFSIZE bytes but tpm_write reports
that only TPM_BUFSIZE bytes have been written the vfs tries to write
the remaining bytes (in this case 10 bytes) to the tpm device driver via
tpm_write which then blocks at
/* cannot perform a write until the read has cleared
either via tpm_read or a user_read_timer timeout */
while (atomic_read(&chip->data_pending) != 0)
msleep(TPM_TIMEOUT);
for 60 seconds, since data_pending is -7 and nobody is able to
read it (since tpm_read luckily checks if data_pending is greater than
0) (#bug 2).
After that the remaining bytes are written to the TPM which are
interpreted by the tpm as a normal command. (bug #3)
So if the last bytes of the command stream happen to be a e.g.
tpm_force_clear this gets accidentally sent to the TPM.
This patch fixes all three bugs, by propagating the error code of
tpm_write and returning -E2BIG if the input buffer is too big,
since the response from the tpm for a truncated value is bogus anyway.
Moreover it returns -EBUSY to userspace if there is a response ready to be
read.
Signed-off-by: Peter Huewe <peter.huewe@infineon.com>
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hiroaki SHIMODA [Wed, 10 Oct 2012 15:34:20 +0000 (15:34 +0000)]
e1000e: Change wthresh to 1 to avoid possible Tx stalls
commit
8edc0e624db3756783233e464879eb2e3b904c13 upstream.
This patch originated from Hiroaki SHIMODA but has been modified
by Intel with some minor cleanups and additional commit log text.
Denys Fedoryshchenko and others reported Tx stalls on e1000e with
BQL enabled. Issue was root caused to hardware delays. They were
introduced because some of the e1000e hardware with transmit
writeback bursting enabled, waits until the driver does an
explict flush OR there are WTHRESH descriptors to write back.
Sometimes the delays in question were on the order of seconds,
causing visible lag for ssh sessions and unacceptable tx
completion latency, especially for BQL enabled kernels.
To avoid possible Tx stalls, change WTHRESH back to 1.
The current plan is to investigate a method for re-enabling
WTHRESH while not harming BQL, but those patches will be later
for net-next if they work.
please enqueue for stable since v3.3 as this bug was introduced in
commit
3f0cfa3bc11e7f00c9994e0f469cbc0e7da7b00c
Author: Tom Herbert <therbert@google.com>
Date: Mon Nov 28 16:33:16 2011 +0000
e1000e: Support for byte queue limits
Changes to e1000e to use byte queue limits.
Reported-by: Denys Fedoryshchenko <denys@visp.net.lb>
Tested-by: Denys Fedoryshchenko <denys@visp.net.lb>
Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
CC: eric.dumazet@gmail.com
CC: therbert@google.com
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Brian Norris [Fri, 13 Jul 2012 16:28:24 +0000 (09:28 -0700)]
mtd: nand: allow NAND_NO_SUBPAGE_WRITE to be set from driver
commit
bf7a01bf7987b63b121d572b240c132ec44129c4 upstream.
The NAND_CHIPOPTIONS_MSK has limited utility and is causing real bugs. It
silently masks off at least one flag that might be set by the driver
(NAND_NO_SUBPAGE_WRITE). This breaks the GPMI NAND driver and possibly
others.
Really, as long as driver writers exercise a small amount of care with
NAND_* options, this mask is not necessary at all; it was only here to
prevent certain options from accidentally being set by the driver. But the
original thought turns out to be a bad idea occasionally. Thus, kill it.
Note, this patch fixes some major gpmi-nand breakage.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Huang Shijie <shijie8@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
index
a11253a..
c429abd 100644
Jan Kara [Wed, 11 Jul 2012 21:16:25 +0000 (23:16 +0200)]
jbd: Fix assertion failure in commit code due to lacking transaction credits
commit
09e05d4805e6c524c1af74e524e5d0528bb3fef3 upstream.
ext3 users of data=journal mode with blocksize < pagesize were occasionally
hitting assertion failure in journal_commit_transaction() checking whether the
transaction has at least as many credits reserved as buffers attached. The
core of the problem is that when a file gets truncated, buffers that still need
checkpointing or that are attached to the committing transaction are left with
buffer_mapped set. When this happens to buffers beyond i_size attached to a
page stradding i_size, subsequent write extending the file will see these
buffers and as they are mapped (but underlying blocks were freed) things go
awry from here.
The assertion failure just coincidentally (and in this case luckily as we would
start corrupting filesystem) triggers due to journal_head not being properly
cleaned up as well.
Under some rare circumstances this bug could even hit data=ordered mode users.
There the assertion won't trigger and we would end up corrupting the
filesystem.
We fix the problem by unmapping buffers if possible (in lots of cases we just
need a buffer attached to a transaction as a place holder but it must not be
written out anyway). And in one case, we just have to bite the bullet and wait
for transaction commit to finish.
Reviewed-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ondrej Zary [Thu, 11 Oct 2012 22:51:41 +0000 (22:51 +0000)]
mcs7830: Fix link state detection
commit
dabdaf0caa3af520dbc1df87b2fb4e77224037bd upstream.
The device had an undocumented "feature": it can provide a sequence of
spurious link-down status data even if the link is up all the time.
A sequence of 10 was seen so update the link state only after the device
reports the same link state 20 times.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Reported-by: Michael Leun <lkml20120218@newton.leun.net>
Tested-by: Michael Leun <lkml20120218@newton.leun.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jani Nikula [Wed, 26 Sep 2012 15:43:10 +0000 (18:43 +0300)]
drm/i915: use adjusted_mode instead of mode for checking the 6bpc force flag
commit
0c96c65b48fba3ffe9822a554cbc0cd610765cd5 upstream.
The dithering introduced in
commit
3b5c78a35cf7511c15e09a9b0ffab290a42d9bcf
Author: Adam Jackson <ajax@redhat.com>
Date: Tue Dec 13 15:41:00 2011 -0800
drm/i915/dp: Dither down to 6bpc if it makes the mode fit
stores the INTEL_MODE_DP_FORCE_6BPC flag in the private_flags of the
adjusted mode, while i9xx_crtc_mode_set() and ironlake_crtc_mode_set() use
the original mode, without the flag, so it would never have any
effect. However, the BPC was clamped by VBT settings, making things work by
coincidence, until that part was removed in
commit
4344b813f105a19f793f1fd93ad775b784648b95
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Aug 10 11:10:20 2012 +0200
Use adjusted_mode instead of mode when checking for
INTEL_MODE_DP_FORCE_6BPC to make the flag have effect.
v2: Don't forget to fix this in i9xx_crtc_mode_set() also, pointed out by
Daniel both before and after sending the first patch.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47621
CC: Adam Jackson <ajax@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kenneth Graunke [Sun, 7 Oct 2012 15:51:07 +0000 (08:51 -0700)]
drm/i915: Set guardband clipping workaround bit in the right register.
commit
26b6e44afb58432a5e998da0343757404f9de9ee upstream.
A previous patch, namely:
commit
bf97b276ca04cee9ab65ffd378fa8e6aedd71ff6
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Apr 11 20:42:41 2012 +0200
drm/i915: implement w/a for incorrect guarband clipping
accidentally set bit 5 in 3D_CHICKEN, which has nothing to do with
clipping. This patch changes it to be set in 3D_CHICKEN3, where it
belongs.
The game "Dante" demonstrates random clipping issues when guardband
clipping is enabled and bit 5 of 3D_CHICKEN3 isn't set. So the
workaround is actually necessary.
Acked-by: Paul Menzel <paulepanter@users.sourceforge.net>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Oliver McFadden <oliver.mcfadden@linux.intel.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Willy Tarreau [Sat, 6 Oct 2012 08:20:16 +0000 (10:20 +0200)]
drm/i915: remove useless BUG_ON which caused a regression in 3.5.
commit
c77d7162a7ae451c2e895d7ef7fbeb0906107472 upstream.
starting an old X server causes a kernel BUG since commit
1b50247a8d:
------------[ cut here ]------------
kernel BUG at drivers/gpu/drm/i915/i915_gem.c:3661!
invalid opcode: 0000 [#1] SMP
Modules linked in: snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss uvcvideo
+videobuf2_core videodev videobuf2_vmalloc videobuf2_memops uhci_hcd ath9k mac80211 snd_hda_codec_realtek ath9k_common microcode
+ath9k_hw psmouse serio_raw sg ath cfg80211 atl1c lpc_ich mfd_core ehci_hcd snd_hda_intel snd_hda_codec snd_hwdep snd_pcm rtc_cmos
+snd_timer snd evdev eeepc_laptop snd_page_alloc sparse_keymap
Pid: 2866, comm: X Not tainted 3.5.6-rc1-eeepc #1 ASUSTeK Computer INC. 1005HA/1005HA
EIP: 0060:[<
c12dc291>] EFLAGS:
00013297 CPU: 0
EIP is at i915_gem_entervt_ioctl+0xf1/0x110
EAX:
f5941df4 EBX:
f5940000 ECX:
00000000 EDX:
00020000
ESI:
f5835400 EDI:
00000000 EBP:
f51d7e38 ESP:
f51d7e20
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
CR0:
8005003b CR2:
b760e0a0 CR3:
351b6000 CR4:
000007d0
DR0:
00000000 DR1:
00000000 DR2:
00000000 DR3:
00000000
DR6:
ffff0ff0 DR7:
00000400
Process X (pid: 2866, ti=
f51d6000 task=
f61af8d0 task.ti=
f51d6000)
Stack:
00000001 00000000 f5835414 f51d7e84 f5835400 f54f85c0 f51d7f10 c12b530b
00000001 c151b139 c14751b6 c152e030 00000b32 00006459 00000059 0000e200
00000001 00000000 00006459 c159ddd0 c12dc1a0 ffffffea 00000000 00000000
Call Trace:
[<
c12b530b>] drm_ioctl+0x2eb/0x440
[<
c12dc1a0>] ? i915_gem_init+0xe0/0xe0
[<
c1052b2b>] ? enqueue_hrtimer+0x1b/0x50
[<
c1053321>] ? __hrtimer_start_range_ns+0x161/0x330
[<
c10530b3>] ? lock_hrtimer_base+0x23/0x50
[<
c1053163>] ? hrtimer_try_to_cancel+0x33/0x70
[<
c12b5020>] ? drm_version+0x90/0x90
[<
c10ca171>] vfs_ioctl+0x31/0x50
[<
c10ca2e4>] do_vfs_ioctl+0x64/0x510
[<
c10535de>] ? hrtimer_nanosleep+0x8e/0x100
[<
c1052c20>] ? update_rmtp+0x80/0x80
[<
c10ca7c9>] sys_ioctl+0x39/0x60
[<
c1433949>] syscall_call+0x7/0xb
Code: 83 c4 0c 5b 5e 5f 5d c3 c7 44 24 04 2c 05 53 c1 c7 04 24 6f ef 47 c1 e8 6e e0 fd ff c7 83 38 1e 00 00 00 00 00 00 e9 3f ff ff
+ff <0f> 0b eb fe 0f 0b eb fe 8d b4 26 00 00 00 00 0f 0b eb fe 8d b6
EIP: [<
c12dc291>] i915_gem_entervt_ioctl+0xf1/0x110 SS:ESP 0068:
f51d7e20
---[ end trace
dd332ec083cbd513 ]---
The crash happens here in i915_gem_entervt_ioctl() :
3659 BUG_ON(!list_empty(&dev_priv->mm.active_list));
3660 BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
-> 3661 BUG_ON(!list_empty(&dev_priv->mm.inactive_list));
3662 mutex_unlock(&dev->struct_mutex);
Quoting Chris :
"That BUG_ON there is silly and can simply be removed. The check is to
verify that no batches were submitted to the kernel whilst the UMS/GEM
client was suspended - to which the BUG_ONs are a crude approximation.
Furthermore, the checks are too late, since it means we attempted to
program the hardware whilst it was in an invalid state, the BUG_ONs are
the least of your concerns at that point."
Note that this regression has been introduced in
commit
1b50247a8ddde4af5aaa0e6bc125615372ce6c16
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue Apr 24 15:47:30 2012 +0100
drm/i915: Remove the list of pinned inactive objects
Signed-off-by: Willy Tarreau <w@1wt.eu>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Added note about the regressing commit and cc: stable.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Egbert Eich [Mon, 15 Oct 2012 06:21:39 +0000 (08:21 +0200)]
drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().
commit
082918471139b07964967cfe5f70230909c82ae1 upstream.
radeon_i2c_fini() walks thru the list of I2C bus recs rdev->i2c_bus[]
to destroy each of them.
radeon_ext_tmds_enc_destroy() however also has code to destroy it's
associated I2C bus rec which has been obtained by radeon_i2c_lookup()
and is therefore also in the i2c_bus[] list.
This causes a double free resulting in a kernel panic when unloading
the radeon driver.
Removing destroy code from radeon_ext_tmds_enc_destroy() fixes this
problem.
agd5f: fix compiler warning
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sasha Levin [Thu, 4 Oct 2012 23:56:40 +0000 (19:56 -0400)]
fs: prevent use after free in auditing when symlink following was denied
commit
ffd8d101a3a7d3f2e79deee1e342801703b6dc70 upstream.
Commit "fs: add link restriction audit reporting" has added auditing of failed
attempts to follow symlinks. Unfortunately, the auditing was being done after
the struct path structure was released earlier.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sasha Levin [Thu, 4 Oct 2012 23:57:31 +0000 (19:57 -0400)]
fs: handle failed audit_log_start properly
commit
d1c7d97ad58836affde6e39980b96527510b572e upstream.
audit_log_start() may return NULL, this is unchecked by the caller in
audit_log_link_denied() and could cause a NULL ptr deref.
Introduced by commit
a51d9eaa ("fs: add link restriction audit reporting").
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jean-Christian de Rivaz [Wed, 10 Oct 2012 12:49:02 +0000 (12:49 +0000)]
Add CDC-ACM support for the CX93010-2x UCMxx USB Modem
commit
e7d491a19d3e3aac544070293891a2542ae0c565 upstream.
This USB V.92/V.32bis Controllered Modem have the USB vendor ID 0x0572
and device ID 0x1340. It need the NO_UNION_NORMAL quirk to be recognized.
Reference:
http://www.conexant.com/servlets/DownloadServlet/DSH-201723-005.pdf?docid=1725&revid=5
See idVendor and idProduct in table 6-1. Device Descriptors
Signed-off-by: Jean-Christian de Rivaz <jc@eclis.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michal Marek [Mon, 15 Oct 2012 19:16:56 +0000 (21:16 +0200)]
kbuild: Fix accidental revert in commit
fe04ddf
commit
3ce9e53e788881da0d5f3912f80e0dd6b501f304 upstream.
Commit
fe04ddf7c291 ("kbuild: Do not package /boot and /lib in make
tar-pkg") accidentally reverted two previous kbuild commits. I don't
know what I was thinking.
This brings back changes made by commits
24cc7fb69a5b ("x86/kbuild:
archscripts depends on scripts_basic") and
c1c1a59e37da ("firmware: fix
directory creation rule matching with make 3.80")
Reported-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gabor Juhos [Sat, 8 Sep 2012 12:02:21 +0000 (14:02 +0200)]
MIPS: ath79: Fix CPU/DDR frequency calculation for SRIF PLLs
commit
97541ccfb9db2bb9cd1dde6344d5834438d14bda upstream.
Besides the CPU and DDR PLLs, the CPU and DDR frequencies
can be derived from other PLLs in the SRIF block on the
AR934x SoCs. The current code does not checks if the SRIF
PLLs are used and this can lead to incorrectly calculated
CPU/DDR frequencies.
Fix it by calculating the frequencies from SRIF PLLs if
those are used on a given board.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4324/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Amerigo Wang [Tue, 9 Oct 2012 17:48:16 +0000 (17:48 +0000)]
pktgen: fix crash when generating IPv6 packets
commit
5aa8b572007c4bca1e6d3dd4c4820f1ae49d6bb2 upstream.
For IPv6, sizeof(struct ipv6hdr) = 40, thus the following
expression will result negative:
datalen = pkt_dev->cur_pkt_size - 14 -
sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
pkt_dev->pkt_overhead;
And, the check "if (datalen < sizeof(struct pktgen_hdr))" will be
passed as "datalen" is promoted to unsigned, therefore will cause
a crash later.
This is a quick fix by checking if "datalen" is negative. The following
patch will increase the default value of 'min_pkt_size' for IPv6.
This bug should exist for a long time, so Cc -stable too.
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jason Wessel [Mon, 27 Aug 2012 03:37:03 +0000 (22:37 -0500)]
kdb,vt_console: Fix missed data due to pager overruns
commit
17b572e82032bc246324ce136696656b66d4e3f1 upstream.
It is possible to miss data when using the kdb pager. The kdb pager
does not pay attention to the maximum column constraint of the screen
or serial terminal. This result is not incrementing the shown lines
correctly and the pager will print more lines that fit on the screen.
Obviously that is less than useful when using a VGA console where you
cannot scroll back.
The pager will now look at the kdb_buffer string to see how many
characters are printed. It might not be perfect considering you can
output ASCII that might move the cursor position, but it is a
substantially better approximation for viewing dmesg and trace logs.
This also means that the vt screen needs to set the kdb COLUMNS
variable.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Thu, 11 Oct 2012 03:20:58 +0000 (14:20 +1100)]
md/raid10: use correct limit variable
commit
91502f099dfc5a1e8812898e26ee280713e1d002 upstream.
Clang complains that we are assigning a variable to itself. This should
be using bad_sectors like the similar earlier check does.
Bug has been present since 3.1-rc1. It is minor but could
conceivably cause corruption or other bad behaviour.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Felix Fietkau [Mon, 8 Oct 2012 12:39:33 +0000 (14:39 +0200)]
mac80211: use ieee80211_free_txskb to fix possible skb leaks
commit
c3e7724b6bc2f25e46c38dbe68f09d71fafeafb8 upstream.
A few places free skbs using dev_kfree_skb even though they're called
after ieee80211_subif_start_xmit might have cloned it for tracking tx
status. Use ieee80211_free_txskb here to prevent skb leaks.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Felix Fietkau [Wed, 3 Oct 2012 19:07:52 +0000 (21:07 +0200)]
ath9k: use ieee80211_free_txskb
commit
249ee72249140fe5b9adc988f97298f0aa5db2fc upstream.
Using ieee80211_free_txskb for tx frames is required, since mac80211 clones
skbs for which socket tx status is requested.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Frederic Weisbecker [Wed, 3 Oct 2012 23:46:44 +0000 (01:46 +0200)]
nohz: Fix one jiffy count too far in idle cputime
commit
2b17c545a4cdbbbadcd7f1e9684c2d7db8f085a6 upstream.
When we stop the tick in idle, we save the current jiffies value
in ts->idle_jiffies. This snapshot is substracted from the later
value of jiffies when the tick is restarted and the resulting
delta is accounted as idle cputime. This is how we handle the
idle cputime accounting without the tick.
But sometimes we need to schedule the next tick to some time in
the future instead of completely stopping it. In this case, a
tick may happen before we restart the periodic behaviour and
from that tick we account one jiffy to idle cputime as usual but
we also increment the ts->idle_jiffies snapshot by one so that
when we compute the delta to account, we substract the one jiffy
we just accounted.
To prepare for stopping the tick outside idle, we introduced a
check that prevents from fixing up that ts->idle_jiffies if we
are not running the idle task. But we use idle_cpu() for that
and this is a problem if we run the tick while another CPU
remotely enqueues a ttwu to our runqueue:
CPU 0: CPU 1:
tick_sched_timer() { ttwu_queue_remote()
if (idle_cpu(CPU 0))
ts->idle_jiffies++;
}
Here, idle_cpu() notes that &rq->wake_list is not empty and
hence won't consider the CPU as idle. As a result,
ts->idle_jiffies won't be incremented. But this is wrong because
we actually account the current jiffy to idle cputime. And that
jiffy won't get substracted from the nohz time delta. So in the
end, this jiffy is accounted twice.
Fix this by changing idle_cpu(smp_processor_id()) with
is_idle_task(current). This way the jiffy is substracted
correctly even if a ttwu operation is enqueued on the CPU.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1349308004-3482-1-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hildner, Christian [Mon, 8 Oct 2012 13:49:03 +0000 (15:49 +0200)]
timers: Fix endless looping between cascade() and internal_add_timer()
commit
26cff4e2aa4d666dc6a120ea34336b5057e3e187 upstream.
Adding two (or more) timers with large values for "expires" (they have
to reside within tv5 in the same list) leads to endless looping
between cascade() and internal_add_timer() in case CONFIG_BASE_SMALL
is one and jiffies are crossing the value 1 << 18. The bug was
introduced between 2.6.11 and 2.6.12 (and survived for quite some
time).
This patch ensures that when cascade() is called timers within tv5 are
not added endlessly to their own list again, instead they are added to
the next lower tv level tv4 (as expected).
Signed-off-by: Christian Hildner <christian.hildner@siemens.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Link: http://lkml.kernel.org/r/98673C87CB31274881CFFE0B65ECC87B0F5FC1963E@DEFTHW99EA4MSX.ww902.siemens.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Tue, 9 Oct 2012 07:18:23 +0000 (10:18 +0300)]
timekeeping: Cast raw_interval to u64 to avoid shift overflow
commit
5b3900cd409466c0070b234d941650685ad0c791 upstream.
We fixed a bunch of integer overflows in timekeeping code during the 3.6
cycle. I did an audit based on that and found this potential overflow.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: John Stultz <johnstul@us.ibm.com>
Link: http://lkml.kernel.org/r/20121009071823.GA19159@elgon.mountain
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniel Drake [Tue, 4 Sep 2012 15:45:32 +0000 (11:45 -0400)]
viafb: don't touch clock state on OLPC XO-1.5
commit
012a1211845eab69a5488d59eb87d24cc518c627 upstream.
As detailed in the thread titled "viafb PLL/clock tweaking causes XO-1.5
instability," enabling or disabling the IGA1/IGA2 clocks causes occasional
stability problems during suspend/resume cycles on this platform.
This is rather odd, as the documentation suggests that clocks have two
states (on/off) and the default (stable) configuration is configured to
enable the clock only when it is needed. However, explicitly enabling *or*
disabling the clock triggers this system instability, suggesting that there
is a 3rd state at play here.
Leaving the clock enable/disable registers alone solves this problem.
This fixes spurious reboots during suspend/resume behaviour introduced by
commit
b692a63a.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexander Holler [Tue, 14 Aug 2012 07:11:09 +0000 (09:11 +0200)]
video/udlfb: fix line counting in fb_write
commit
b8c4321f3d194469007f5f5f2b34ec278c264a04 upstream.
Line 0 and 1 were both written to line 0 (on the display) and all subsequent
lines had an offset of -1. The result was that the last line on the display
was never overwritten by writes to /dev/fbN.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthew Garrett [Fri, 22 Jun 2012 17:49:31 +0000 (13:49 -0400)]
module: taint kernel when lve module is loaded
commit
c99af3752bb52ba3aece5315279a57a477edfaf1 upstream.
Cloudlinux have a product called lve that includes a kernel module. This
was previously GPLed but is now under a proprietary license, but the
module continues to declare MODULE_LICENSE("GPL") and makes use of some
EXPORT_SYMBOL_GPL symbols. Forcibly taint it in order to avoid this.
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Alex Lyashkov <umka@cloudlinux.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Kent [Thu, 11 Oct 2012 00:00:33 +0000 (08:00 +0800)]
autofs4 - fix reset pending flag on mount fail
commit
49999ab27eab6289a8e4f450e148bdab521361b2 upstream.
In autofs4_d_automount(), if a mount fail occurs the AUTOFS_INF_PENDING
mount pending flag is not cleared.
One effect of this is when using the "browse" option, directory entry
attributes show up with all "?"s due to the incorrect callback and
subsequent failure return (when in fact no callback should be made).
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tejun Heo [Thu, 20 Sep 2012 21:09:30 +0000 (14:09 -0700)]
block: fix request_queue->flags initialization
commit
60ea8226cbd5c8301f9a39edc574ddabcb8150e0 upstream.
A queue newly allocated with blk_alloc_queue_node() has only
QUEUE_FLAG_BYPASS set. For request-based drivers,
blk_init_allocated_queue() is called and q->queue_flags is overwritten
with QUEUE_FLAG_DEFAULT which doesn't include BYPASS even though the
initial bypass is still in effect.
In blk_init_allocated_queue(), or QUEUE_FLAG_DEFAULT to q->queue_flags
instead of overwriting.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Wed, 10 Oct 2012 17:30:47 +0000 (13:30 -0400)]
xen/bootup: allow read_tscp call for Xen PV guests.
commit
cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab upstream.
The hypervisor will trap it. However without this patch,
we would crash as the .read_tscp is set to NULL. This patch
fixes it and sets it to the native_read_tscp call.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Wed, 10 Oct 2012 17:25:48 +0000 (13:25 -0400)]
xen/bootup: allow {read|write}_cr8 pvops call.
commit
1a7bbda5b1ab0e02622761305a32dc38735b90b2 upstream.
We actually do not do anything about it. Just return a default
value of zero and if the kernel tries to write anything but 0
we BUG_ON.
This fixes the case when an user tries to suspend the machine
and it blows up in save_processor_state b/c 'read_cr8' is set
to NULL and we get:
kernel BUG at /home/konrad/ssd/linux/arch/x86/include/asm/paravirt.h:100!
invalid opcode: 0000 [#1] SMP
Pid: 2687, comm: init.late Tainted: G O
3.6.0upstream-00002-gac264ac-dirty #4 Bochs Bochs
RIP: e030:[<
ffffffff814d5f42>] [<
ffffffff814d5f42>] save_processor_state+0x212/0x270
.. snip..
Call Trace:
[<
ffffffff810733bf>] do_suspend_lowlevel+0xf/0xac
[<
ffffffff8107330c>] ? x86_acpi_suspend_lowlevel+0x10c/0x150
[<
ffffffff81342ee2>] acpi_suspend_enter+0x57/0xd5
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Wed, 10 Oct 2012 17:23:36 +0000 (13:23 -0400)]
xen/pv-on-hvm kexec: add quirk for Xen 3.4 and shutdown watches.
commit
cb6b6df111e46b9d0f79eb971575fd50555f43f4 upstream.
The commit
254d1a3f02ebc10ccc6e4903394d8d3f484f715e, titled
"xen/pv-on-hvm kexec: shutdown watches from old kernel" assumes that the
XenBus backend can deal with reading of values from:
"control/platform-feature-xs_reset_watches":
... a patch for xenstored is required so that it
accepts the XS_RESET_WATCHES request from a client (see changeset
23839:
42a45baf037d in xen-unstable.hg). Without the patch for xenstored
the registration of watches will fail and some features of a PVonHVM
guest are not available. The guest is still able to boot, but repeated
kexec boots will fail."
Sadly this is not true when using a Xen 3.4 hypervisor and booting a PVHVM
guest. We end up hanging at:
err = xenbus_scanf(XBT_NIL, "control",
"platform-feature-xs_reset_watches", "%d", &supported);
This can easily be seen with guests hanging at xenbus_init:
NX (Execute Disable) protection: active
SMBIOS 2.4 present.
DMI: Xen HVM domU, BIOS 3.4.0 05/13/2011
Hypervisor detected: Xen HVM
Xen version 3.4.
Xen Platform PCI: I/O protocol version 1
... snip ..
calling xenbus_init+0x0/0x27e @ 1
Reverting the commit or using the attached patch fixes the issue. This fix
checks whether the hypervisor is older than 4.0 and if so does not try to
perform the read.
Fixes-Oracle-Bug:
14708233
Acked-by: Olaf Hering <olaf@aepfle.de>
[v2: Added a comment in the source code]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Williamson [Wed, 10 Oct 2012 15:10:32 +0000 (09:10 -0600)]
vfio: Fix PCI INTx disable consistency
commit
899649b7d4ead76c19e39251ca886eebe3f811a8 upstream.
The virq_disabled flag tracks the userspace view of INTx masking
across interrupt mode changes, but we're not consistently applying
this to the interrupt and masking handler notion of the device.
Currently if the user sets DisINTx while in MSI or MSIX mode, then
returns to INTx mode (ex. rebooting a qemu guest), the hardware has
DisINTx+, but the management of INTx thinks it's enabled, making it
impossible to actually clear DisINTx. Fix this by updating the
handler state when INTx is re-enabled.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Williamson [Wed, 10 Oct 2012 15:10:32 +0000 (09:10 -0600)]
vfio: Move PCI INTx eventfd setting earlier
commit
9dbdfd23b7638d054f3b0e70c64dfb9f297f2a9f upstream.
We need to be ready to recieve an interrupt as soon as we call
request_irq, so our eventfd context setting needs to be moved
earlier. Without this, an interrupt from our device or one
sharing the interrupt line can pass a NULL into eventfd_signal
and oops.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Roland Dreier [Tue, 18 Sep 2012 22:10:56 +0000 (15:10 -0700)]
qla2xxx: Fix endianness of task management response code
commit
e4b11b89f9039ca97b2ed1b6efeb6749fbdeb252 upstream.
The qla2xxx firmware actually expects the task management response
code in a CTIO IOCB with SCSI status mode 1 to be in little-endian
byte order, ie the response code should be the first byte in the
sense_data[] array. The old code erroneously byte-swapped the
response code, which puts it in the wrong place on the wire and leads
to initiators thinking every task management request succeeds (since
they see 0 in the byte where they look for the response code).
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Acked-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicholas Bellinger [Sun, 30 Sep 2012 00:15:37 +0000 (17:15 -0700)]
target/file: Re-enable optional fd_buffered_io=1 operation
commit
b32f4c7ed85c5cee2a21a55c9f59ebc9d57a2463 upstream.
This patch re-adds the ability to optionally run in buffered FILEIO mode
(eg: w/o O_DSYNC) for device backends in order to once again use the
Linux buffered cache as a write-back storage mechanism.
This logic was originally dropped with mainline v3.5-rc commit:
commit
a4dff3043c231d57f982af635c9d2192ee40e5ae
Author: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed May 30 16:25:41 2012 -0700
target/file: Use O_DSYNC by default for FILEIO backends
This difference with this patch is that fd_create_virtdevice() now
forces the explicit setting of emulate_write_cache=1 when buffered FILEIO
operation has been enabled.
(v2: Switch to FDBD_HAS_BUFFERED_IO_WCE + add more detailed
comment as requested by hch)
Reported-by: Ferry <iscsitmp@bananateam.nl>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Senna Tschudin [Mon, 17 Sep 2012 18:05:33 +0000 (20:05 +0200)]
target: fix return code in target_core_init_configfs error path
commit
37bb7899ca366dc212b71b150e78566d04808cc0 upstream.
This patch fixes error cases within target_core_init_configfs() to
properly set ret = -ENOMEM before jumping to the out_global exception
path.
This was originally discovered with the following Coccinelle semantic
match information:
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function. A simplified version of the semantic match
that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Paolo Bonzini [Fri, 7 Sep 2012 15:30:39 +0000 (17:30 +0200)]
target: fix truncation of mode data, support zero allocation length
commit
7a3f369ce31694017996524a1cdb08208a839077 upstream.
The offset was not bumped back to the full size after writing the
header of the MODE SENSE response, so the last 1 or 2 bytes were
not copied.
On top of this, support zero-length requests by checking for the
return value of transport_kmap_data_sg.
Testcase: sg_raw -r20 /dev/sdb 5a 00 0a 00 00 00 00 00 14 00
last byte should be 0x1e
it is 0x00 without the patch
it is correct with the patch
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Paolo Bonzini [Fri, 7 Sep 2012 15:30:38 +0000 (17:30 +0200)]
target: support zero allocation length in INQUIRY
commit
ffe7b0e9326d9c68f5688bef691dd49f1e0d3651 upstream.
INQUIRY processing already uses an on-heap bounce buffer for loopback,
but not for other fabrics. Switch this to a cheaper on-stack bounce
buffer, similar to the one used by MODE SENSE and REQUEST SENSE, and
use it unconditionally. With this in place, zero allocation length is
handled simply by checking the return address of transport_kmap_data_sg.
Testcase: sg_raw /dev/sdb 12 00 83 00 00 00
should fail with ILLEGAL REQUEST / INVALID FIELD IN CDB sense
does not fail without the patch
fails correctly with the series
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Trond Myklebust [Wed, 12 Sep 2012 20:49:15 +0000 (16:49 -0400)]
SUNRPC: Ensure that the TCP socket is closed when in CLOSE_WAIT
commit
a519fc7a70d1a918574bb826cc6905b87b482eb9 upstream.
Instead of doing a shutdown() call, we need to do an actual close().
Ditto if/when the server is sending us junk RPC headers.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Tested-by: Simon Kirby <sim@hostway.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stefan Richter [Sat, 6 Oct 2012 12:12:56 +0000 (14:12 +0200)]
firewire: cdev: fix user memory corruption (i386 userland on amd64 kernel)
commit
790198f74c9d1b46b6a89504361b1a844670d050 upstream.
Fix two bugs of the /dev/fw* character device concerning the
FW_CDEV_IOC_GET_INFO ioctl with nonzero fw_cdev_get_info.bus_reset.
(Practically all /dev/fw* clients issue this ioctl right after opening
the device.)
Both bugs are caused by sizeof(struct fw_cdev_event_bus_reset) being 36
without natural alignment and 40 with natural alignment.
1) Memory corruption, affecting i386 userland on amd64 kernel:
Userland reserves a 36 bytes large buffer, kernel writes 40 bytes.
This has been first found and reported against libraw1394 if
compiled with gcc 4.7 which happens to order libraw1394's stack such
that the bug became visible as data corruption.
2) Information leak, affecting all kernel architectures except i386:
4 bytes of random kernel stack data were leaked to userspace.
Hence limit the respective copy_to_user() to the 32-bit aligned size of
struct fw_cdev_event_bus_reset.
Reported-by: Simon Kirby <sim@hostway.ca>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Mon, 8 Oct 2012 21:01:12 +0000 (14:01 -0700)]
ARM: OMAP: counter: add locking to read_persistent_clock
commit
9d7d6e363b06934221b81a859d509844c97380df upstream.
read_persistent_clock uses a global variable, use a spinlock to
ensure non-atomic updates to the variable don't overlap and cause
time to move backwards.
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simon Horman [Fri, 28 Sep 2012 01:12:45 +0000 (02:12 +0100)]
ARM: 7541/1: Add ARM ERRATA 775420 workaround
commit
7253b85cc62d6ff84143d96fe6cd54f73736f4d7 upstream.
arm: Add ARM ERRATA 775420 workaround
Workaround for the 775420 Cortex-A9 (r2p2, r2p6,r2p8,r2p10,r3p0) erratum.
In case a date cache maintenance operation aborts with MMU exception, it
might cause the processor to deadlock. This workaround puts DSB before
executing ISB if an abort may occur on cache maintenance.
Based on work by Kouei Abe and feedback from Catalin Marinas.
Signed-off-by: Kouei Abe <kouei.abe.cp@rms.renesas.com>
[ horms@verge.net.au: Changed to implementation
suggested by catalin.marinas@arm.com ]
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Richard W.M. Jones [Tue, 2 Oct 2012 15:25:46 +0000 (17:25 +0200)]
SCSI: virtio-scsi: initialize scatterlist structure
commit
2e9c9dfde00a6466441e93033cf2c37f720bdacf upstream.
The sg struct is used without being initialized, which breaks
when CONFIG_DEBUG_SG is enabled.
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lukas Czerner [Thu, 16 Aug 2012 14:38:45 +0000 (16:38 +0200)]
SCSI: scsi_debug: Fix off-by-one bug when unmapping region
commit
bc977749e967daa56de1922cf4cb38525631c51c upstream.
Currently it is possible to unmap one more block than user requested to
due to the off-by-one error in unmap_region(). This is probably due to
the fact that the end variable despite its name actually points to the
last block to unmap + 1. However in the condition it is handled as the
last block of the region to unmap.
The bug was not previously spotted probably due to the fact that the
region was not zeroed, which has changed with commit
be1dd78de5686c062bb3103f9e86d444a10ed783. With that commit we were able
to corrupt the ext4 file system on 256M scsi_debug device with LBPRZ
enabled using fstrim.
Since the 'end' semantic is the same in several functions there this
commit just fixes the condition to use the 'end' variable correctly in
that context.
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
K. Y. Srinivasan [Tue, 2 Oct 2012 18:03:31 +0000 (11:03 -0700)]
SCSI: storvsc: Account for in-transit packets in the RESET path
commit
5c1b10ab7f93d24f29b5630286e323d1c5802d5c upstream.
Properly account for I/O in transit before returning from the RESET call.
In the absense of this patch, we could have a situation where the host may
respond to a command that was issued prior to the issuance of the RESET
command at some arbitrary time after responding to the RESET command.
Currently, the host does not do anything with the RESET command.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicholas Bellinger [Wed, 3 Oct 2012 22:42:48 +0000 (15:42 -0700)]
iscsi-target: Bump defaults for nopin_timeout + nopin_response_timeout values
commit
cf0eb28d3ba60098865bf7dbcbfdd6b1cc483e3b upstream.
This patch increases the default for nopin_timeout to 15 seconds (wait
between sending a new NopIN ping) and nopin_response_timeout to 30 seconds
(wait for NopOUT response before failing the connection) in order to avoid
false positives by iSCSI Initiators who are not always able (under load) to
respond to NopIN echo PING requests within the current 5 second window.
False positives have been observed recently using Open-iSCSI code on v3.3.x
with heavy large-block READ workloads over small MTU 1 Gb/sec ports, and
increasing these values to more reasonable defaults significantly reduces
the possibility of false positive NopIN response timeout events under
this specific workload.
Historically these have been set low to initiate connection recovery as
soon as possible if we don't hear a ping back, but for modern v3.x code
on 1 -> 10 Gb/sec ports these new defaults make alot more sense.
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicholas Bellinger [Sun, 30 Sep 2012 19:20:02 +0000 (12:20 -0700)]
iscsi-target: Add explicit set of cache_dynamic_acls=1 for TPG demo-mode
commit
38b11bae6ba02da352340aff12ee25755977b222 upstream.
We've had reports in the past about this specific case, so it's time to
go ahead and explicitly set cache_dynamic_acls=1 for generate_node_acls=1
(TPG demo-mode) operation.
During normal generate_node_acls=0 operation with explicit NodeACLs ->
se_node_acl memory is persistent to the configfs group located at
/sys/kernel/config/target/$TARGETNAME/$TPGT/acls/$INITIATORNAME, so in
the generate_node_acls=1 case we want the reservation logic to reference
existing per initiator IQN se_node_acl memory (not to generate a new
se_node_acl), so go ahead and always set cache_dynamic_acls=1 when
TPG demo-mode is enabled.
Reported-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Christoph Hellwig [Wed, 26 Sep 2012 12:00:37 +0000 (08:00 -0400)]
iscsit: remove incorrect unlock in iscsit_build_sendtargets_resp
commit
904753da183566c71211d23c169a80184648c121 upstream.
Fix a potential multiple spin-unlock -> deadlock scenario during the
overflow check within iscsit_build_sendtargets_resp() as found by
sparse static checking.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicholas Bellinger [Sun, 23 Sep 2012 00:21:06 +0000 (17:21 -0700)]
iscsi-target: Correctly set 0xffffffff field within ISCSI_OP_REJECT PDU
commit
f25590f39d543272f7ae7b00d533359c8d7ff331 upstream.
This patch adds a missing iscsi_reject->
ffffffff assignment within
iscsit_send_reject() code to properly follow RFC-3720 Section 10.17
Bytes 16 -> 19 for the PDU format definition of ISCSI_OP_REJECT.
We've not seen any initiators care about this bytes in practice, but
as Ronnie reported this was causing trouble with wireshark packet
decoding lets go ahead and fix this up now.
Reported-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hugh Dickins [Mon, 8 Oct 2012 03:32:51 +0000 (20:32 -0700)]
tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking
commit
35c2a7f4908d404c9124c2efc6ada4640ca4d5d5 upstream.
Fuzzing with trinity oopsed on the 1st instruction of shmem_fh_to_dentry(),
u64 inum = fid->raw[2];
which is unhelpfully reported as at the end of shmem_alloc_inode():
BUG: unable to handle kernel paging request at
ffff880061cd3000
IP: [<
ffffffff812190d0>] shmem_alloc_inode+0x40/0x40
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Call Trace:
[<
ffffffff81488649>] ? exportfs_decode_fh+0x79/0x2d0
[<
ffffffff812d77c3>] do_handle_open+0x163/0x2c0
[<
ffffffff812d792c>] sys_open_by_handle_at+0xc/0x10
[<
ffffffff83a5f3f8>] tracesys+0xe1/0xe6
Right, tmpfs is being stupid to access fid->raw[2] before validating that
fh_len includes it: the buffer kmalloc'ed by do_sys_name_to_handle() may
fall at the end of a page, and the next page not be present.
But some other filesystems (ceph, gfs2, isofs, reiserfs, xfs) are being
careless about fh_len too, in fh_to_dentry() and/or fh_to_parent(), and
could oops in the same way: add the missing fh_len checks to those.
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Sage Weil <sage@inktank.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jason Wessel [Fri, 10 Aug 2012 17:21:15 +0000 (12:21 -0500)]
mips,kgdb: fix recursive page fault with CONFIG_KPROBES
commit
f0a996eeeda214f4293e234df33b29bec003b536 upstream.
This fault was detected using the kgdb test suite on boot and it
crashes recursively due to the fact that CONFIG_KPROBES on mips adds
an extra die notifier in the page fault handler. The crash signature
looks like this:
kgdbts:RUN bad memory access test
KGDB: re-enter exception: ALL breakpoints killed
Call Trace:
[<
807b7548>] dump_stack+0x20/0x54
[<
807b7548>] dump_stack+0x20/0x54
The fix for now is to have kgdb return immediately if the fault type
is DIE_PAGE_FAULT and allow the kprobe code to decide what is supposed
to happen.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Wed, 10 Oct 2012 06:50:35 +0000 (08:50 +0200)]
ALSA: hda - Fix memory leaks at error path in patch_cirrus.c
commit
c5e0b6dbad9b4d18c561af90b384d02373f1c994 upstream.
The proper destructor should be called at the error path.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Henningsson [Wed, 10 Oct 2012 14:32:09 +0000 (16:32 +0200)]
ALSA: hda - do not detect jack on internal speakers for Realtek
commit
f7f4b2322bf7b8c5929b7eb5a667091f32592580 upstream.
This caused the internal speaker to mute itself because it was
present, which happened after powersave.
It was found on Dell XPS 15 (L502x), ALC665.
Reported-by: Da Fox <da.fox.mail@gmail.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Wed, 10 Oct 2012 06:41:42 +0000 (08:41 +0200)]
ALSA: hda - Add missing hda_gen_spec to struct via_spec
commit
7819d1c70eb6a57e43554d86e10b39d1e106ed65 upstream.
The commit [
4b527b65 ALSA: hda - limit internal mic boost for Asus
X202E] introduced the use of auto-parser code, but it forgot to add
struct hda_gen_spec at the head of codec->spec which the auto-parser
assumes silently. Without this record, it may result in memory
corruption.
This patch adds the missing piece.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Feng Tang [Fri, 28 Sep 2012 07:22:01 +0000 (15:22 +0800)]
ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop
commit
67bfa9b60bd689601554526d144b21d529f78a09 upstream.
By enlarging the GPE storm threshold back to 20, that laptop's
EC works fine with interrupt mode instead of polling mode.
https://bugzilla.kernel.org/show_bug.cgi?id=45151
Reported-and-Tested-by: Francesco <trentini@dei.unipd.it>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Feng Tang [Fri, 28 Sep 2012 07:22:00 +0000 (15:22 +0800)]
ACPI: EC: Make the GPE storm threshold a module parameter
commit
a520d52e99b14ba7db135e916348f12f2a6e09be upstream.
The Linux EC driver includes a mechanism to detect GPE storms,
and switch from interrupt-mode to polling mode. However, polling
mode sometimes doesn't work, so the workaround is problematic.
Also, different systems seem to need the threshold for detecting
the GPE storm at different levels.
ACPI_EC_STORM_THRESHOLD was initially 20 when it's created, and
was changed to 8 in 2.6.28 commit
06cf7d3c7 "ACPI: EC: lower interrupt storm
threshold" to fix kernel bug 11892 by forcing the laptop in that bug to
work in polling mode. However in bug 45151, it works fine in interrupt
mode if we lift the threshold back to 20.
This patch makes the threshold a module parameter so that user has a
flexible option to debug/workaround this issue.
The default is unchanged.
This is also a preparation patch to fix specific systems:
https://bugzilla.kernel.org/show_bug.cgi?id=45151
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stanislav Kinsbursky [Tue, 18 Sep 2012 09:37:23 +0000 (13:37 +0400)]
lockd: create and use per-net NSM RPC clients on MON/UNMON requests
commit
cb7323fffa85df37161f4d3be45e1f787808309c upstream.
NSM RPC client can be required on NFSv3 umount, when child reaper is dying
(and destroying it's mount namespace). It means, that current nsproxy is set
to NULL already, but creation of RPC client requires UTS namespace for gaining
hostname string.
This patch creates reference-counted per-net NSM client on first monitor
request and destroys it after last unmonitor request.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stanislav Kinsbursky [Tue, 18 Sep 2012 09:37:18 +0000 (13:37 +0400)]
lockd: use rpc client's cl_nodename for id encoding
commit
303a7ce92064c285a04c870f2dc0192fdb2968cb upstream.
Taking hostname from uts namespace if not safe, because this cuold be
performind during umount operation on child reaper death. And in this case
current->nsproxy is NULL already.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stanislav Kinsbursky [Tue, 18 Sep 2012 09:37:12 +0000 (13:37 +0400)]
lockd: per-net NSM client creation and destruction helpers introduced
commit
e9406db20fecbfcab646bad157b4cfdc7cadddfb upstream.
NSM RPC client can be required on NFSv3 umount, when child reaper is dying (and
destroying it's mount namespace). It means, that current nsproxy is set to
NULL already, but creation of RPC client requires UTS namespace for gaining
hostname string.
This patch introduces reference counted NFS RPC clients creation and
destruction helpers (similar to RPCBIND RPC clients).
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Malahal Naineni [Sun, 9 Sep 2012 15:25:47 +0000 (10:25 -0500)]
NFSD: pass null terminated buf to kstrtouint()
commit
9959ba0c241a71c7ed8133401cfbbee2720da0b5 upstream.
The 'buf' is prepared with null termination with intention of using it for
this purpose, but 'name' is passed instead!
Signed-off-by: Malahal Naineni <malahal@us.ibm.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
J. Bruce Fields [Wed, 29 Aug 2012 22:21:58 +0000 (15:21 -0700)]
nfsd4: fix nfs4 stateid leak
commit
cf9182e90b2af04245ac4fae497fe73fc71285b4 upstream.
Processes that open and close multiple files may end up setting this
oo_last_closed_stid without freeing what was previously pointed to.
This can result in a major leak, visible for example by watching the
nfsd4_stateids line of /proc/slabinfo.
Reported-by: Cyril B. <cbay@excellency.fr>
Tested-by: Cyril B. <cbay@excellency.fr>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
J. Bruce Fields [Tue, 21 Aug 2012 16:48:30 +0000 (12:48 -0400)]
nfsd4: don't pin clientids to pseudoflavors
commit
68eb35081e297b37db49d854cda144c6a3397699 upstream.
I added cr_flavor to the data compared in same_creds without any
justification, in
d5497fc693a446ce9100fcf4117c3f795ddfd0d2 "nfsd4: move
rq_flavor into svc_cred".
Recent client changes then started making
mount -osec=krb5 server:/export /mnt/
echo "hello" >/mnt/TMP
umount /mnt/
mount -osec=krb5i server:/export /mnt/
echo "hello" >/mnt/TMP
to fail due to a clid_inuse on the second open.
Mounting sequentially like this with different flavors probably isn't
that common outside artificial tests. Also, the real bug here may be
that the server isn't just destroying the former clientid in this case
(because it isn't good enough at recognizing when the old state is
gone). But it prompted some discussion and a look back at the spec, and
I think the check was probably wrong. Fix and document.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bryan Schumaker [Wed, 26 Sep 2012 19:25:52 +0000 (15:25 -0400)]
NFS: Remove bad delegations during open recovery
commit
6938867edba929a65a167a97581231e76aeb10b4 upstream.
I put the client into an open recovery loop by:
Client: Open file
read half
Server: Expire client (echo 0 > /sys/kernel/debug/nfsd/forget_clients)
Client: Drop vm cache (echo 3 > /proc/sys/vm/drop_caches)
finish reading file
This causes a loop because the client never updates the nfs4_state after
discovering that the delegation is invalid. This means it will keep
trying to read using the bad delegation rather than attempting to re-open
the file.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peng Tao [Thu, 23 Aug 2012 16:27:49 +0000 (00:27 +0800)]
NFS41: fix error of setting blocklayoutdriver
commit
dc182549d439f60c332bf74d7f220a1bccf37da6 upstream.
After commit
e38eb650 (NFS: set_pnfs_layoutdriver() from
nfs4_proc_fsinfo()), set_pnfs_layoutdriver() is called inside
nfs4_proc_fsinfo(), but pnfs_blksize is not set. It causes setting
blocklayoutdriver failure and pnfsblock mount failure.
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peng Tao [Thu, 23 Aug 2012 16:27:51 +0000 (00:27 +0800)]
pnfsblock: fix partial page buffer wirte
commit
fe6e1e8d9fad86873eb74a26e80a8f91f9e870b5 upstream.
If applications use flock to protect its write range, generic NFS
will not do read-modify-write cycle at page cache level. Therefore
LD should know how to handle non-sector aligned writes. Otherwise
there will be data corruption.
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Russell King [Tue, 9 Oct 2012 10:13:26 +0000 (11:13 +0100)]
ARM: vfp: fix saving d16-d31 vfp registers on v6+ kernels
commit
846a136881b8f73c1f74250bf6acfaa309cab1f2 upstream.
Michael Olbrich reported that his test program fails when built with
-O2 -mcpu=cortex-a8 -mfpu=neon, and a kernel which supports v6 and v7
CPUs:
volatile int x = 2;
volatile int64_t y = 2;
int main() {
volatile int a = 0;
volatile int64_t b = 0;
while (1) {
a = (a + x) % (1 << 30);
b = (b + y) % (1 << 30);
assert(a == b);
}
}
and two instances are run. When built for just v7 CPUs, this program
works fine. It uses the "vadd.i64 d19, d18, d16" VFP instruction.
It appears that we do not save the high-16 double VFP registers across
context switches when the kernel is built for v6 CPUs. Fix that.
Tested-By: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 12 Oct 2012 20:50:59 +0000 (05:50 +0900)]
Linux 3.6.2
Frediano Ziglio [Tue, 7 Aug 2012 09:33:03 +0000 (04:33 -0500)]
Convert properly UTF-8 to UTF-16
commit
fd3ba42c76d3d4b776120c2b24c1791e7bb3deb1 upstream.
wchar_t is currently 16bit so converting a utf8 encoded characters not
in plane 0 (>= 0x10000) to wchar_t (that is calling char2uni) lead to a
-EINVAL return. This patch detect utf8 in cifs_strtoUTF16 and add special
code calling utf8s_to_utf16s.
Signed-off-by: Frediano Ziglio <frediano.ziglio@citrix.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jeff Layton [Wed, 3 Oct 2012 20:02:36 +0000 (16:02 -0400)]
cifs: reinstate the forcegid option
commit
72bd481f860f0125c810bb43d878ce5f9c060c58 upstream.
Apparently this was lost when we converted to the standard option
parser in
8830d7e07a5e38bc47650a7554b7c1cfd49902bf
Reported-by: Gregory Lee Bartholomew <gregory.lee.bartholomew@gmail.com>
Cc: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Brian Norris [Fri, 31 Aug 2012 22:01:19 +0000 (15:01 -0700)]
JFFS2: don't fail on bitflips in OOB
commit
74d83beaa229aac7d126ac1ed9414658ff1a89d2 upstream.
JFFS2 was designed without thought for OOB bitflips, it seems, but they
can occur and will be reported to JFFS2 via mtd_read_oob()[1]. We don't
want to fail on these transactions, since the data was corrected.
[1] Few drivers report bitflips for OOB-only transactions. With such
drivers, this patch should have no effect.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Artem Bityutskiy [Thu, 23 Aug 2012 07:10:07 +0000 (10:10 +0300)]
JFFS2: fix unmount regression
commit
a445f784ae5558a3da680aa6b39ed53c95a551c1 upstream.
This patch fixes regression introduced by
"
8bdc81c jffs2: get rid of jffs2_sync_super". We submit a delayed work in order
to make sure the write-buffer is synchronized at some point. But we do not
flush it when we unmount, which causes an oops when we unmount the file-system
and then the delayed work is executed.
This patch fixes the issue by adding a "cancel_delayed_work_sync()" infocation
in the '->sync_fs()' handler. This will make sure the delayed work is canceled
on sync, unmount and re-mount. And because VFS always callse 'sync_fs()' before
unmounting or remounting, this fixes the issue.
Reported-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Guennadi Liakhovetski [Tue, 18 Sep 2012 06:42:42 +0000 (06:42 +0000)]
mmc: sh-mmcif: avoid oops on spurious interrupts
commit
8464dd52d3198dd05cafb005371d76e5339eb842 upstream.
On some systems, e.g., kzm9g, MMCIF interfaces can produce spurious
interrupts without any active request. To prevent the Oops, that results
in such cases, don't dereference the mmc request pointer until we make
sure, that we are indeed processing such a request.
Reported-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Ball [Mon, 10 Sep 2012 02:56:48 +0000 (22:56 -0400)]
mmc: slot-gpio: Fix missing assignment to ctx->ro_gpio
commit
15e8a8e42966162c207bb97ed55c803bc437eeae upstream.
mmc_gpio_request_ro() doesn't store the requested gpio in ctx->ro_gpio.
As a result, subsequent calls to mmc_gpio_get_ro() will always fail
with -ENOSYS because the gpio number isn't available to that function.
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vaibhav Bedia [Thu, 13 Sep 2012 06:31:03 +0000 (06:31 +0000)]
mmc: omap_hsmmc: Pass on the suspend failure to the PM core
commit
c4c8eeb4df00aabb641553d6fbcd46f458e56cd9 upstream.
In some cases mmc_suspend_host() is not able to claim the
host and proceed with the suspend process. The core returns
-EBUSY to the host controller driver. Unfortunately, the
host controller driver does not pass on this information
to the PM core and hence the system suspend process continues.
ret = mmc_suspend_host(host->mmc);
if (ret) {
host->suspended = 0;
if (host->pdata->resume) {
ret = host->pdata->resume(dev, host->slot_id);
The return status from mmc_suspend_host() is overwritten by return
status from host->pdata->resume. So the original return status is lost.
In these cases the MMC core gets to an unexpected state
during resume and multiple issues related to MMC crop up.
1. Host controller driver starts accessing the device registers
before the clocks are enabled which leads to a prefetch abort.
2. A file copy thread which was launched before suspend gets
stuck due to the host not being reclaimed during resume.
To avoid such problems pass on the -EBUSY status to the PM core
from the host controller driver. With this change, MMC core
suspend might still fail but it does not end up making the
system unusable. Suspend gets aborted and the user can try
suspending the system again.
Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andreas Bießmann [Fri, 31 Aug 2012 11:35:42 +0000 (13:35 +0200)]
mtd: omap2: fix module loading
commit
4d3d688da8e7016f15483e9319b41311e1db9515 upstream.
Unloading the omap2 nand driver missed to release the memory region which will
result in not being able to request it again if one want to load the driver
later on.
This patch fixes following error when loading omap2 module after unloading:
---8<---
~ $ rmmod omap2
~ $ modprobe omap2
[ 37.420928] omap2-nand: probe of omap2-nand.0 failed with error -16
~ $
--->8---
This error was introduced in
67ce04bf2746f8a1f8c2a104b313d20c63f68378 which
was the first commit of this driver.
Signed-off-by: Andreas Bießmann <andreas@biessmann.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andreas Bießmann [Fri, 31 Aug 2012 11:35:41 +0000 (13:35 +0200)]
mtd: omap2: fix omap_nand_remove segfault
commit
7d9b110269253b1d5858cfa57d68dfc7bf50dd77 upstream.
Do not kfree() the mtd_info; it is handled in the mtd subsystem and
already freed by nand_release(). Instead kfree() the struct
omap_nand_info allocated in omap_nand_probe which was not freed before.
This patch fixes following error when unloading the omap2 module:
---8<---
~ $ rmmod omap2
------------[ cut here ]------------
kernel BUG at mm/slab.c:3126!
Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
Modules linked in: omap2(-)
CPU: 0 Not tainted (
3.6.0-rc3-00230-g155e36d-dirty #3)
PC is at cache_free_debugcheck+0x2d4/0x36c
LR is at kfree+0xc8/0x2ac
pc : [<
c01125a0>] lr : [<
c0112efc>] psr:
200d0193
sp :
c521fe08 ip :
c0e8ef90 fp :
c521fe5c
r10:
bf0001fc r9 :
c521e000 r8 :
c0d99c8c
r7 :
c661ebc0 r6 :
c065d5a4 r5 :
c65c4060 r4 :
c78005c0
r3 :
00000000 r2 :
00001000 r1 :
c65c4000 r0 :
00000001
Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Control:
10c5387d Table:
86694019 DAC:
00000015
Process rmmod (pid: 549, stack limit = 0xc521e2f0)
Stack: (0xc521fe08 to 0xc5220000)
fe00:
c008a874 c00bf44c c515c6d0 200d0193 c65c4860 c515c240
fe20:
c521fe3c c521fe30 c008a9c0 c008a854 c521fe5c c65c4860 c78005c0 bf0001fc
fe40:
c780ff40 a00d0113 c521e000 00000000 c521fe84 c521fe60 c0112efc c01122d8
fe60:
c65c4860 c0673778 c06737ac 00000000 00070013 00000000 c521fe9c c521fe88
fe80:
bf0001fc c0112e40 c0673778 bf001ca8 c521feac c521fea0 c02ca11c bf0001ac
fea0:
c521fec4 c521feb0 c02c82c4 c02ca100 c0673778 bf001ca8 c521fee4 c521fec8
fec0:
c02c8dd8 c02c8250 00000000 bf001ca8 bf001ca8 c0804ee0 c521ff04 c521fee8
fee0:
c02c804c c02c8d20 bf001924 00000000 bf001ca8 c521e000 c521ff1c c521ff08
ff00:
c02c950c c02c7fbc bf001d48 00000000 c521ff2c c521ff20 c02ca3a4 c02c94b8
ff20:
c521ff3c c521ff30 bf001938 c02ca394 c521ffa4 c521ff40 c009beb4 bf001930
ff40:
c521ff6c 70616d6f b6fe0032 c0014f84 70616d6f b6fe0032 00000081 60070010
ff60:
c521ff84 c521ff70 c008e1f4 c00bf328 0001a004 70616d6f c521ff94 0021ff88
ff80:
c008e368 0001a004 70616d6f b6fe0032 00000081 c0015028 00000000 c521ffa8
ffa0:
c0014dc0 c009bcd0 0001a004 70616d6f bec2ab38 00000880 bec2ab38 00000880
ffc0:
0001a004 70616d6f b6fe0032 00000081 00000319 00000000 b6fe1000 00000000
ffe0:
bec2ab30 bec2ab20 00019f00 b6f539c0 60070010 bec2ab38 aaaaaaaa aaaaaaaa
Backtrace:
[<
c01122cc>] (cache_free_debugcheck+0x0/0x36c) from [<
c0112efc>] (kfree+0xc8/0x2ac)
[<
c0112e34>] (kfree+0x0/0x2ac) from [<
bf0001fc>] (omap_nand_remove+0x5c/0x64 [omap2])
[<
bf0001a0>] (omap_nand_remove+0x0/0x64 [omap2]) from [<
c02ca11c>] (platform_drv_remove+0x28/0x2c)
r5:
bf001ca8 r4:
c0673778
[<
c02ca0f4>] (platform_drv_remove+0x0/0x2c) from [<
c02c82c4>] (__device_release_driver+0x80/0xdc)
[<
c02c8244>] (__device_release_driver+0x0/0xdc) from [<
c02c8dd8>] (driver_detach+0xc4/0xc8)
r5:
bf001ca8 r4:
c0673778
[<
c02c8d14>] (driver_detach+0x0/0xc8) from [<
c02c804c>] (bus_remove_driver+0x9c/0x104)
r6:
c0804ee0 r5:
bf001ca8 r4:
bf001ca8 r3:
00000000
[<
c02c7fb0>] (bus_remove_driver+0x0/0x104) from [<
c02c950c>] (driver_unregister+0x60/0x80)
r6:
c521e000 r5:
bf001ca8 r4:
00000000 r3:
bf001924
[<
c02c94ac>] (driver_unregister+0x0/0x80) from [<
c02ca3a4>] (platform_driver_unregister+0x1c/0x20)
r5:
00000000 r4:
bf001d48
[<
c02ca388>] (platform_driver_unregister+0x0/0x20) from [<
bf001938>] (omap_nand_driver_exit+0x14/0x1c [omap2])
[<
bf001924>] (omap_nand_driver_exit+0x0/0x1c [omap2]) from [<
c009beb4>] (sys_delete_module+0x1f0/0x2ec)
[<
c009bcc4>] (sys_delete_module+0x0/0x2ec) from [<
c0014dc0>] (ret_fast_syscall+0x0/0x48)
r8:
c0015028 r7:
00000081 r6:
b6fe0032 r5:
70616d6f r4:
0001a004
Code:
e1a00005 eb0d9172 e7f001f2 e7f001f2 (
e7f001f2)
---[ end trace
6a30b24d8c0cc2ee ]---
Segmentation fault
--->8---
This error was introduced in
67ce04bf2746f8a1f8c2a104b313d20c63f68378 which
was the first commit of this driver.
Signed-off-by: Andreas Bießmann <andreas@biessmann.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Shmulik Ladkani [Sun, 10 Jun 2012 10:58:12 +0000 (13:58 +0300)]
mtd: nand: Use the mirror BBT descriptor when reading its version
commit
7bb9c75436212813b38700c34df4bbb6eb82debe upstream.
The code responsible for reading the version of the mirror bbt was
incorrectly using the descriptor of the main bbt.
Pass the mirror bbt descriptor to 'scan_read_raw' when reading the
version of the mirror bbt.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Richard Genoud [Wed, 12 Sep 2012 12:26:26 +0000 (14:26 +0200)]
mtd: nandsim: bugfix: fail if overridesize is too big
commit
bb0a13a13411c4ce24c48c8ff3cdf7b48d237240 upstream.
If override size is too big, the module was actually loaded instead of
failing, because retval was not set.
This lead to memory corruption with the use of the freed structs nandsim
and nand_chip.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexander Shiyan [Wed, 15 Aug 2012 16:28:05 +0000 (20:28 +0400)]
mtd: autcpu12-nvram: Fix compile breakage
commit
d1f55c680e5d021e7066f4461dd678d42af18898 upstream.
Update driver autcpu12-nvram.c so it compiles; map_read32/map_write32
no longer exist in the kernel so the driver is totally broken.
Additionally, map_info name passed to simple_map_init is incorrect.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huang Shijie [Sat, 18 Aug 2012 17:07:41 +0000 (13:07 -0400)]
mtd: mtdpart: break it as soon as we parse out the partitions
commit
c51803ddba10d80d9f246066802c6e359cf1d44c upstream.
We may cause a memory leak when the @types has more then one parser.
Take the `default_mtd_part_types` for example. The default_mtd_part_types has
two parsers now: `cmdlinepart` and `ofpart`.
Assume the following case:
The kernel command line sets the partitions like:
#gpmi-nand:20m(boot),20m(kernel),1g(rootfs),-(user)
But the devicetree file(such as arch/arm/boot/dts/imx28-evk.dts) also sets
the same partitions as the kernel command line does.
In the current code, the partitions parsed out by the `ofpart` will
overwrite the @pparts which has already set by the `cmdlinepart` parser,
and the the partitions parsed out by the `cmdlinepart` is missed.
A memory leak occurs.
So we should break the code as soon as we parse out the partitions,
In actually, this patch makes a priority order between the parsers.
If one parser has already parsed out the partitions successfully,
it's no need to use another parser anymore.
Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dylan Reid [Fri, 28 Sep 2012 22:57:01 +0000 (15:57 -0700)]
ALSA: hda - Fix hang caused by race during suspend.
commit
d17344b3547669f5b6ee4fda993d03737a141bd6 upstream.
There was a race condition when the system suspends while hda_power_work
is running in the work queue. If system suspend (snd_hda_suspend)
happens after the work queue releases power_lock but before it calls
hda_call_codec_suspend, codec_suspend runs with power_on=0, causing the
codec to power up for register reads, and hanging when it calls
cancel_delayed_work_sync from the running work queue.
The call chain from the work queue will look like this:
hda_power_work <<- power_on = 1, unlock, then power_on cleard by suspend
hda_call_codec_suspend
hda_set_power_state
snd_hda_codec_read
codec_exec_verb
snd_hda_power_up
snd_hda_power_save
__snd_hda_power_up
cancel_delayed_work_sync <<-- cancelling executing wq
Fix this by waiting for the work queue to finish before starting suspend
if suspend is not happening on the work queue.
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Quinlan Pfiffer [Fri, 28 Sep 2012 19:58:44 +0000 (19:58 +0000)]
asix: Adds support for Lenovo 10/100 USB dongle.
commit
66dc81ecd71332783c92fb170950d5ddb43da461 upstream.
This dongle ships with the X1 Carbon, and has an AX88772B
usb to ethernet chip in it.
Signed-off-by: Quinlan Pfiffer <qpfiffer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Zijlstra [Wed, 5 Sep 2012 22:03:50 +0000 (00:03 +0200)]
sched: Fix load avg vs. cpu-hotplug
commit
08bedae1d0acd8c9baf514fb69fa199d0c8345f6 upstream.
Commit
f319da0c68 ("sched: Fix load avg vs cpu-hotplug") was an
incomplete fix:
In particular, the problem is that at the point it calls
calc_load_migrate() nr_running := 1 (the stopper thread), so move the
call to CPU_DEAD where we're sure that nr_running := 0.
Also note that we can call calc_load_migrate() without serialization, we
know the state of rq is stable since its cpu is dead, and we modify the
global state using appropriate atomic ops.
Suggested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1346882630.2600.59.camel@twins
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mauro Carvalho Chehab [Tue, 2 Oct 2012 19:02:57 +0000 (16:02 -0300)]
em28xx: regression fix: use DRX-K sync firmware requests on em28xx
commit
2425bb3d4016ed95ce83a90b53bd92c7f31091e4 upstream.
As em28xx-dvb will always be initialized asynchronously, there's
no need anymore for a separate thread to load the DRX-K firmware.
Fixes a known regression with kernel 3.6 with tda18271 driver
and asynchronous DRX-K firmware load.
Antti tested it with the following hardware:
Hauppauge WinTV HVR 930C
MaxMedia UB425-TC
PCTV QuatroStick nano (520e)
Tested-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Seiji Aguchi [Tue, 24 Jul 2012 13:27:23 +0000 (13:27 +0000)]
efi: initialize efi.runtime_version to make query_variable_info/update_capsule workable
commit
d6cf86d8f23253225fe2a763d627ecf7dfee9dae upstream.
A value of efi.runtime_version is checked before calling
update_capsule()/query_variable_info() as follows.
But it isn't initialized anywhere.
<snip>
static efi_status_t virt_efi_query_variable_info(u32 attr,
u64 *storage_space,
u64 *remaining_space,
u64 *max_variable_size)
{
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
<snip>
This patch initializes a value of efi.runtime_version at boot time.
Signed-off-by: Seiji Aguchi <seiji.aguchi@hds.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Ivan Hu <ivan.hu@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthew Garrett [Thu, 26 Jul 2012 22:00:00 +0000 (18:00 -0400)]
efi: Build EFI stub with EFI-appropriate options
commit
9dead5bbb825d7c25c0400e61de83075046322d0 upstream.
We can't assume the presence of the red zone while we're still in a boot
services environment, so we should build with -fno-red-zone to avoid
problems. Change the size of wchar at the same time to make string handling
simpler.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Acked-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mel Gorman [Mon, 8 Oct 2012 23:29:20 +0000 (16:29 -0700)]
mempolicy: fix a memory corruption by refcount imbalance in alloc_pages_vma()
commit
00442ad04a5eac08a98255697c510e708f6082e2 upstream.
Commit
cc9a6c877661 ("cpuset: mm: reduce large amounts of memory barrier
related damage v3") introduced a potential memory corruption.
shmem_alloc_page() uses a pseudo vma and it has one significant unique
combination, vma->vm_ops=NULL and vma->policy->flags & MPOL_F_SHARED.
get_vma_policy() does NOT increase a policy ref when vma->vm_ops=NULL
and mpol_cond_put() DOES decrease a policy ref when a policy has
MPOL_F_SHARED. Therefore, when a cpuset update race occurs,
alloc_pages_vma() falls in 'goto retry_cpuset' path, decrements the
reference count and frees the policy prematurely.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
KOSAKI Motohiro [Mon, 8 Oct 2012 23:29:19 +0000 (16:29 -0700)]
mempolicy: fix refcount leak in mpol_set_shared_policy()
commit
63f74ca21f1fad36d075e063f06dcc6d39fe86b2 upstream.
When shared_policy_replace() fails to allocate new->policy is not freed
correctly by mpol_set_shared_policy(). The problem is that shared
mempolicy code directly call kmem_cache_free() in multiple places where
it is easy to make a mistake.
This patch creates an sp_free wrapper function and uses it. The bug was
introduced pre-git age (IOW, before 2.6.12-rc2).
[mgorman@suse.de: Editted changelog]
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mel Gorman [Mon, 8 Oct 2012 23:29:17 +0000 (16:29 -0700)]
mempolicy: fix a race in shared_policy_replace()
commit
b22d127a39ddd10d93deee3d96e643657ad53a49 upstream.
shared_policy_replace() use of sp_alloc() is unsafe. 1) sp_node cannot
be dereferenced if sp->lock is not held and 2) another thread can modify
sp_node between spin_unlock for allocating a new sp node and next
spin_lock. The bug was introduced before 2.6.12-rc2.
Kosaki's original patch for this problem was to allocate an sp node and
policy within shared_policy_replace and initialise it when the lock is
reacquired. I was not keen on this approach because it partially
duplicates sp_alloc(). As the paths were sp->lock is taken are not that
performance critical this patch converts sp->lock to sp->mutex so it can
sleep when calling sp_alloc().
[kosaki.motohiro@jp.fujitsu.com: Original patch]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
KOSAKI Motohiro [Mon, 8 Oct 2012 23:29:16 +0000 (16:29 -0700)]
mempolicy: remove mempolicy sharing
commit
869833f2c5c6e4dd09a5378cfc665ffb4615e5d2 upstream.
Dave Jones' system call fuzz testing tool "trinity" triggered the
following bug error with slab debugging enabled
=============================================================================
BUG numa_policy (Not tainted): Poison overwritten
-----------------------------------------------------------------------------
INFO: 0xffff880146498250-0xffff880146498250. First byte 0x6a instead of 0x6b
INFO: Allocated in mpol_new+0xa3/0x140 age=46310 cpu=6 pid=32154
__slab_alloc+0x3d3/0x445
kmem_cache_alloc+0x29d/0x2b0
mpol_new+0xa3/0x140
sys_mbind+0x142/0x620
system_call_fastpath+0x16/0x1b
INFO: Freed in __mpol_put+0x27/0x30 age=46268 cpu=6 pid=32154
__slab_free+0x2e/0x1de
kmem_cache_free+0x25a/0x260
__mpol_put+0x27/0x30
remove_vma+0x68/0x90
exit_mmap+0x118/0x140
mmput+0x73/0x110
exit_mm+0x108/0x130
do_exit+0x162/0xb90
do_group_exit+0x4f/0xc0
sys_exit_group+0x17/0x20
system_call_fastpath+0x16/0x1b
INFO: Slab 0xffffea0005192600 objects=27 used=27 fp=0x (null) flags=0x20000000004080
INFO: Object 0xffff880146498250 @offset=592 fp=0xffff88014649b9d0
The problem is that the structure is being prematurely freed due to a
reference count imbalance. In the following case mbind(addr, len) should
replace the memory policies of both vma1 and vma2 and thus they will
become to share the same mempolicy and the new mempolicy will have the
MPOL_F_SHARED flag.
+-------------------+-------------------+
| vma1 | vma2(shmem) |
+-------------------+-------------------+
| |
addr addr+len
alloc_pages_vma() uses get_vma_policy() and mpol_cond_put() pair for
maintaining the mempolicy reference count. The current rule is that
get_vma_policy() only increments refcount for shmem VMA and
mpol_conf_put() only decrements refcount if the policy has
MPOL_F_SHARED.
In above case, vma1 is not shmem vma and vma->policy has MPOL_F_SHARED!
The reference count will be decreased even though was not increased
whenever alloc_page_vma() is called. This has been broken since commit
[
52cd3b07: mempolicy: rework mempolicy Reference Counting] in 2008.
There is another serious bug with the sharing of memory policies.
Currently, mempolicy rebind logic (it is called from cpuset rebinding)
ignores a refcount of mempolicy and override it forcibly. Thus, any
mempolicy sharing may cause mempolicy corruption. The bug was
introduced by commit [
68860ec1: cpusets: automatic numa mempolicy
rebinding].
Ideally, the shared policy handling would be rewritten to either
properly handle COW of the policy structures or at least reference count
MPOL_F_SHARED based exclusively on information within the policy.
However, this patch takes the easier approach of disabling any policy
sharing between VMAs. Each new range allocated with sp_alloc will
allocate a new policy, set the reference count to 1 and drop the
reference count of the old policy. This increases the memory footprint
but is not expected to be a major problem as mbind() is unlikely to be
used for fine-grained ranges. It is also inefficient because it means
we allocate a new policy even in cases where mbind_range() could use the
new_policy passed to it. However, it is more straight-forward and the
change should be invisible to the user.
[mgorman@suse.de: Edited changelog]
Reported-by: Dave Jones <davej@redhat.com>,
Cc: Christoph Lameter <cl@linux.com>,
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>