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commit a8b33654b1e3b0c74d4a1fed041c9aae50b3c427 upstream.
The icount.reserved[] array isn't initialized so it leaks stack
information to userspace.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8d1e72250c847fa96498ec029891de4dc638a5ba upstream.
The DevInfo.u32Reserved[] array isn't initialized so it leaks kernel
information to user space.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c2c65cd2e14ada6de44cb527e7f1990bede24e15 upstream.
We need to check "count" so we don't overflow the ei->data buffer.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ff18620c2157671a8ee21ebb8e6a3520ea209b1f upstream.
... due to a copy & paste error.
Spotted by coverity CID 710923.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 268ff14525edba31da29a12a9dd693cdd6a7872e upstream.
Spotted by coverity CID 115170.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit a4461f41b94cb52e0141af717dcf4ef6558c8e2e upstream.
Unable to handle kernel NULL pointer dereference at virtual address 00000008
pgd = d5300000
[00000008] *pgd=0d265831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
CPU: 0 PID: 2295 Comm: vlc Not tainted 3.11.0+ #755
task: dee74800 ti: e213c000 task.ti: e213c000
PC is at snd_pcm_info+0xc8/0xd8
LR is at 0x30232065
pc : [<c031b52c>] lr : [<30232065>] psr: a0070013
sp : e213dea8 ip : d81cb0d0 fp : c05f7678
r10: c05f7770 r9 : fffffdfd r8 : 00000000
r7 : d8a968a8 r6 : d8a96800 r5 : d8a96200 r4 : d81cb000
r3 : 00000000 r2 : d81cb000 r1 : 00000001 r0 : d8a96200
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 15300019 DAC: 00000015
Process vlc (pid: 2295, stack limit = 0xe213c248)
[<c031b52c>] (snd_pcm_info) from [<c031b570>] (snd_pcm_info_user+0x34/0x9c)
[<c031b570>] (snd_pcm_info_user) from [<c03164a4>] (snd_pcm_control_ioctl+0x274/0x280)
[<c03164a4>] (snd_pcm_control_ioctl) from [<c0311458>] (snd_ctl_ioctl+0xc0/0x55c)
[<c0311458>] (snd_ctl_ioctl) from [<c00eca84>] (do_vfs_ioctl+0x80/0x31c)
[<c00eca84>] (do_vfs_ioctl) from [<c00ecd5c>] (SyS_ioctl+0x3c/0x60)
[<c00ecd5c>] (SyS_ioctl) from [<c000e500>] (ret_fast_syscall+0x0/0x48)
Code: e1a00005 e59530dc e3a01001 e1a02004 (e5933008)
---[ end trace cb3d9bdb8dfefb3c ]---
This is provoked when the ASoC front end is open along with its backend,
(which causes the backend to have a runtime assigned to it) and then the
SNDRV_CTL_IOCTL_PCM_INFO is requested for the (visible) backend device.
Resolve this by ensuring that ASoC internal backend devices are not
visible to userspace, just as the commentry for snd_pcm_new_internal()
says it should be.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6fc16e58adf50c0f1e4478538983fb5ff6f453d4 upstream.
ASUS N76VZ needs the same fixup as N56VZ for supporting the boost
speaker.
Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=846529
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e6bbe666673ab044a3d39ddb74e4d9a401cf1d6f upstream.
When a machine goes to S3/S4 after power-save is enabled, the runtime
PM refcount might be incorrectly decreased because the power-down
triggered soon after resume assumes that the controller was already
powered up, and issues the pm_notify down.
This patch fixes the incorrect pm_notify call simply by checking the
current value properly.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b63eae0a6c84839275a4638a7baa391be965cd0e upstream.
The generic parser has a support of vmaster hook, but this is
initialized only in the init callback with the check of the presence
of the corresponding kctl. However, since kctl is NULL at the very
first init callback that is called before build_controls callback, the
vmaster hook sync is skipped there. Eventually this leads to the
uninitialized state depending on the hook implementation.
This patch adds a simple workaround, just calling the sync function
explicitly at build_controls callback.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9c41f4eeb9d51f3ece20428d35a3ea32cf3b5622 upstream.
A vmalloc fault needs to sync up PGD/PTE entry from init_mm to current
task's "active_mm". ARC vmalloc fault handler however was using mm.
A vmalloc fault for non user task context (actually pre-userland, from
init thread's open for /dev/console) caused the handler to deref NULL mm
(for mm->pgd)
The reasons it worked so far is amazing:
1. By default (!SMP), vmalloc fault handler uses a cached value of PGD.
In SMP that MMU register is repurposed hence need for mm pointer deref.
2. In pre-3.12 SMP kernel, the problem triggering vmalloc didn't exist in
pre-userland code path - it was introduced with commit 20bafb3d23d108bc
"n_tty: Move buffers into n_tty_data"
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: Noam Camus <noamc@ezchip.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f6537f2f0eba4eba3354e48dbe3047db6d8b6254 upstream.
This patch uses CONFIG_PAGE_OFFSET to filter symbols which
are not in kernel address space because these symbols are
generally for generating code purpose and can't be run at
kernel mode, so we needn't keep them in /proc/kallsyms.
For example, on ARM there are some symbols which may be
linked in relocatable code section, then perf can't parse
symbols any more from /proc/kallsyms, this patch fixes the
problem (introduced b9b32bf70f2fb710b07c94e13afbc729afe221da)
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 54e181e073fc1415e41917d725ebdbd7de956455 upstream.
Since the beginning of the parisc-linux port, sometimes 64bit SMP kernels were
not able to bring up other CPUs than the monarch CPU and instead crashed the
kernel. The reason was unclear, esp. since it involved various machines (e.g.
J5600, J6750 and SuperDome). Testing showed, that those crashes didn't happened
when less than 4GB were installed, or if a 32bit Linux kernel was booted.
In the end, the fix for those SMP problems is trivial:
During the early phase of the initialization of the CPUs, including the monarch
CPU, the PDC_PSW firmware function to enable WIDE (=64bit) mode is called.
It's documented that this firmware function may clobber various registers, and
one one of those possibly clobbered registers is %cr30 which holds the task
thread info pointer.
Now, if %cr30 would always have been clobbered, then this bug would have been
detected much earlier. But lots of testing finally showed, that - at least for
%cr30 - on some machines only the upper 32bits of the 64bit register suddenly
turned zero after the firmware call.
So, after finding the root cause, the explanation for the various crashes
became clear:
- On 32bit SMP Linux kernels all upper 32bit were zero, so we didn't faced this
problem.
- Monarch CPUs in 64bit mode always booted sucessfully, because the inital task
thread info pointer was below 4GB.
- Secondary CPUs booted sucessfully on machines with less than 4GB RAM because
the upper 32bit were zero anyay.
- Secondary CPus failed to boot if we had more than 4GB RAM and the task thread
info pointer was located above the 4GB boundary.
Finally, the patch to fix this problem is trivial by saving the %cr30 register
before the firmware call and restoring it afterwards.
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 97b9410643475d6557d2517c2aff9fd2221141a9 upstream.
Marc Kleine-Budde pointed out, that commit 77cc982 "clocksource: use
clockevents_config_and_register() where possible" caused a regression
for some of the converted subarchs.
The reason is, that the clockevents core code converts the minimal
hardware tick delta to a nanosecond value for core internal
usage. This conversion is affected by integer math rounding loss, so
the backwards conversion to hardware ticks will likely result in a
value which is less than the configured hardware limitation. The
affected subarchs used their own workaround (SIGH!) which got lost in
the conversion.
The solution for the issue at hand is simple: adding evt->mult - 1 to
the shifted value before the integer divison in the core conversion
function takes care of it. But this only works for the case where for
the scaled math mult/shift pair "mult <= 1 << shift" is true. For the
case where "mult > 1 << shift" we can apply the rounding add only for
the minimum delta value to make sure that the backward conversion is
not less than the given hardware limit. For the upper bound we need to
omit the rounding add, because the backwards conversion is always
larger than the original latch value. That would violate the upper
bound of the hardware device.
Though looking closer at the details of that function reveals another
bogosity: The upper bounds check is broken as well. Checking for a
resulting "clc" value greater than KTIME_MAX after the conversion is
pointless. The conversion does:
u64 clc = (latch << evt->shift) / evt->mult;
So there is no sanity check for (latch << evt->shift) exceeding the
64bit boundary. The latch argument is "unsigned long", so on a 64bit
arch the handed in argument could easily lead to an unnoticed shift
overflow. With the above rounding fix applied the calculation before
the divison is:
u64 clc = (latch << evt->shift) + evt->mult - 1;
So we need to make sure, that neither the shift nor the rounding add
is overflowing the u64 boundary.
[ukl: move assignment to rnd after eventually changing mult, fix build
issue and correct comment with the right math]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: nicolas.ferre@atmel.com
Cc: Marc Pignat <marc.pignat@hevs.ch>
Cc: john.stultz@linaro.org
Cc: kernel@pengutronix.de
Cc: Ronald Wahl <ronald.wahl@raritan.com>
Cc: LAK <linux-arm-kernel@lists.infradead.org>
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Link: http://lkml.kernel.org/r/1380052223-24139-1-git-send-email-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 60a01f558af9c48b0bb31f303c479e32721add3f upstream.
This patch addresses a long-standing bug where the get_user_pages_fast()
write parameter used for setting the underlying page table entry permission
bits was incorrectly set to write=1 for data_direction=DMA_TO_DEVICE, and
passed into get_user_pages_fast() via vhost_scsi_map_iov_to_sgl().
However, this parameter is intended to signal WRITEs to pinned userspace
PTEs for the virtio-scsi DMA_FROM_DEVICE -> READ payload case, and *not*
for the virtio-scsi DMA_TO_DEVICE -> WRITE payload case.
This bug would manifest itself as random process segmentation faults on
KVM host after repeated vhost starts + stops and/or with lots of vhost
endpoints + LUNs.
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 58932e96e438cd78f75e765d7b87ef39d3533d15 upstream.
In case of error, the function scsi_host_lookup() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2053a1db41193c2b5e1f47a91aaba0fd63ba7102 upstream.
The unpacked_lun field in the SCSI target tracepoints should be
initialized with cmd->orig_fe_lun rather than cmd->se_lun->unpacked_lun
for two reasons:
- most importantly, if we are in the cmd_complete tracepoint
returning a check condition due to no LUN found, cmd->se_lun will
be NULL and we'll crash trying to dereference it.
- also, in any case, cmd->se_lun->unpacked_lun is an internal index
into the target's internal set of LUNs; cmd->orig_fe_lun is much
more useful and interesting, since it's the value the initiator
actually sent.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 61e4947c99c4494336254ec540c50186d186150b upstream.
Since:
commit 7ceb17e87bde79d285a8b988cfed9eaeebe60b86
md: Allow devices to be re-added to a read-only array.
spares are activated on a read-only array. In case of raid1 and raid10
personalities it causes that not-in-sync devices are marked in-sync
without checking if recovery has been finished.
If a read-only array is degraded and one of its devices is not in-sync
(because the array has been only partially recovered) recovery will be skipped.
This patch adds checking if recovery has been finished before marking a device
in-sync for raid1 and raid10 personalities. In case of raid5 personality
such condition is already present (at raid5.c:6029).
Bug was introduced in 3.10 and causes data corruption.
Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 905b0297a9533d7a6ee00a01a990456636877dd6 upstream.
When operate harddisk and hit errors, md_set_badblocks is called after
scsi_restart_operations which already disabled the irq. but md_set_badblocks
will call write_sequnlock_irq and enable irq. so softirq can preempt the
current thread and that may cause a deadlock. I think this situation should
use write_sequnlock_irqsave/irqrestore instead.
I met the situation and the call trace is below:
[ 638.919974] BUG: spinlock recursion on CPU#0, scsi_eh_13/1010
[ 638.921923] lock: 0xffff8800d4d51fc8, .magic: dead4ead, .owner: scsi_eh_13/1010, .owner_cpu: 0
[ 638.923890] CPU: 0 PID: 1010 Comm: scsi_eh_13 Not tainted 3.12.0-rc5+ #37
[ 638.925844] Hardware name: To be filled by O.E.M. To be filled by O.E.M./MAHOBAY, BIOS 4.6.5 03/05/2013
[ 638.927816] ffff880037ad4640 ffff880118c03d50 ffffffff8172ff85 0000000000000007
[ 638.929829] ffff8800d4d51fc8 ffff880118c03d70 ffffffff81730030 ffff8800d4d51fc8
[ 638.931848] ffffffff81a72eb0 ffff880118c03d90 ffffffff81730056 ffff8800d4d51fc8
[ 638.933884] Call Trace:
[ 638.935867] <IRQ> [<ffffffff8172ff85>] dump_stack+0x55/0x76
[ 638.937878] [<ffffffff81730030>] spin_dump+0x8a/0x8f
[ 638.939861] [<ffffffff81730056>] spin_bug+0x21/0x26
[ 638.941836] [<ffffffff81336de4>] do_raw_spin_lock+0xa4/0xc0
[ 638.943801] [<ffffffff8173f036>] _raw_spin_lock+0x66/0x80
[ 638.945747] [<ffffffff814a73ed>] ? scsi_device_unbusy+0x9d/0xd0
[ 638.947672] [<ffffffff8173fb1b>] ? _raw_spin_unlock+0x2b/0x50
[ 638.949595] [<ffffffff814a73ed>] scsi_device_unbusy+0x9d/0xd0
[ 638.951504] [<ffffffff8149ec47>] scsi_finish_command+0x37/0xe0
[ 638.953388] [<ffffffff814a75e8>] scsi_softirq_done+0xa8/0x140
[ 638.955248] [<ffffffff8130e32b>] blk_done_softirq+0x7b/0x90
[ 638.957116] [<ffffffff8104fddd>] __do_softirq+0xfd/0x330
[ 638.958987] [<ffffffff810b964f>] ? __lock_release+0x6f/0x100
[ 638.960861] [<ffffffff8174a5cc>] call_softirq+0x1c/0x30
[ 638.962724] [<ffffffff81004c7d>] do_softirq+0x8d/0xc0
[ 638.964565] [<ffffffff8105024e>] irq_exit+0x10e/0x150
[ 638.966390] [<ffffffff8174ad4a>] smp_apic_timer_interrupt+0x4a/0x60
[ 638.968223] [<ffffffff817499af>] apic_timer_interrupt+0x6f/0x80
[ 638.970079] <EOI> [<ffffffff810b964f>] ? __lock_release+0x6f/0x100
[ 638.971899] [<ffffffff8173fa6a>] ? _raw_spin_unlock_irq+0x3a/0x50
[ 638.973691] [<ffffffff8173fa60>] ? _raw_spin_unlock_irq+0x30/0x50
[ 638.975475] [<ffffffff81562393>] md_set_badblocks+0x1f3/0x4a0
[ 638.977243] [<ffffffff81566e07>] rdev_set_badblocks+0x27/0x80
[ 638.978988] [<ffffffffa00d97bb>] raid5_end_read_request+0x36b/0x4e0 [raid456]
[ 638.980723] [<ffffffff811b5a1d>] bio_endio+0x1d/0x40
[ 638.982463] [<ffffffff81304ff3>] req_bio_endio.isra.65+0x83/0xa0
[ 638.984214] [<ffffffff81306b9f>] blk_update_request+0x7f/0x350
[ 638.985967] [<ffffffff81306ea1>] blk_update_bidi_request+0x31/0x90
[ 638.987710] [<ffffffff813085e0>] __blk_end_bidi_request+0x20/0x50
[ 638.989439] [<ffffffff8130862f>] __blk_end_request_all+0x1f/0x30
[ 638.991149] [<ffffffff81308746>] blk_peek_request+0x106/0x250
[ 638.992861] [<ffffffff814a62a9>] ? scsi_kill_request.isra.32+0xe9/0x130
[ 638.994561] [<ffffffff814a633a>] scsi_request_fn+0x4a/0x3d0
[ 638.996251] [<ffffffff813040a7>] __blk_run_queue+0x37/0x50
[ 638.997900] [<ffffffff813045af>] blk_run_queue+0x2f/0x50
[ 638.999553] [<ffffffff814a5750>] scsi_run_queue+0xe0/0x1c0
[ 639.001185] [<ffffffff814a7721>] scsi_run_host_queues+0x21/0x40
[ 639.002798] [<ffffffff814a2e87>] scsi_restart_operations+0x177/0x200
[ 639.004391] [<ffffffff814a4fe9>] scsi_error_handler+0xc9/0xe0
[ 639.005996] [<ffffffff814a4f20>] ? scsi_unjam_host+0xd0/0xd0
[ 639.007600] [<ffffffff81072f6b>] kthread+0xdb/0xe0
[ 639.009205] [<ffffffff81072e90>] ? flush_kthread_worker+0x170/0x170
[ 639.010821] [<ffffffff81748cac>] ret_from_fork+0x7c/0xb0
[ 639.012437] [<ffffffff81072e90>] ? flush_kthread_worker+0x170/0x170
This bug was introduce in commit 2e8ac30312973dd20e68073653
(the first time rdev_set_badblock was call from interrupt context),
so this patch is appropriate for 3.5 and subsequent kernels.
Signed-off-by: Bian Yu <bianyu@kedacom.com>
Reviewed-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 59612d187912750f416fbffe0c00bc0811c54ab5 upstream.
This reverts commit 9745cdb36da8 (select: use freezable blocking call)
that triggers problems during resume from suspend to RAM on Paul Bolle's
32-bit x86 machines. Paul says:
Ever since I tried running (release candidates of) v3.11 on the two
working i686s I still have lying around I ran into issues on resuming
from suspend. Reverting 9745cdb36da8 (select: use freezable blocking
call) resolves those issues.
Resuming from suspend on i686 on (release candidates of) v3.11 and
later triggers issues like:
traps: systemd[1] general protection ip:b738e490 sp:bf882fc0 error:0 in libc-2.16.so[b731c000+1b0000]
and
traps: rtkit-daemon[552] general protection ip:804d6e5 sp:b6cb32f0 error:0 in rtkit-daemon[8048000+d000]
Once I hit the systemd error I can only get out of the mess that the
system is at that point by power cycling it.
Since we are reverting another freezer-related change causing similar
problems to happen, this one should be reverted as well.
References: https://lkml.org/lkml/2013/10/29/583
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Fixes: 9745cdb36da8 (select: use freezable blocking call)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c511851de162e8ec03d62e7d7feecbdf590d881d upstream.
This reverts commit 1c441e921201 (epoll: use freezable blocking call)
which is reported to cause user space memory corruption to happen
after suspend to RAM.
Since it appears to be extremely difficult to root cause this
problem, it is best to revert the offending commit and try to address
the original issue in a better way later.
References: https://bugzilla.kernel.org/show_bug.cgi?id=61781
Reported-by: Natrio <natrio@list.ru>
Reported-by: Jeff Pohlmeyer <yetanothergeek@gmail.com>
Bisected-by: Leo Wolf <jclw@ymail.com>
Fixes: 1c441e921201 (epoll: use freezable blocking call)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit dfb6b7c109a7f98d324a759599d1b4616f02c79f upstream.
This reverts commit 9483f40d8d01918b399b4e24d0c1111db0afffeb.
Some devices stop to connect with above commit, see:
https://bugzilla.kernel.org/show_bug.cgi?id=61621
Since there is no clear benefit of having MSI enabled, just revert
change to fix the problem.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f13e220161e738c2710b9904dcb3cf8bb0bcce61 upstream.
libata EH decrements scmd->retries when the command failed for reasons
unrelated to the command itself so that, for example, commands aborted
due to suspend / resume cycle don't get penalized; however,
decrementing scmd->retries isn't enough for ATA passthrough commands.
Without this fix, ATA passthrough commands are not resend to the
drive, and no error is signalled to the caller because:
- allowed retry count is 1
- ata_eh_qc_complete fill the sense data, so result is valid
- sense data is filled with untouched ATA registers.
Signed-off-by: Gwendal Grignou <gwendal@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d47648fcf0611812286f68131b40251c6fa54f5e upstream.
SCSI discard will damage discard stripe bio setting, eg, some fields are
changed. If the stripe is reused very soon, we have wrong bios setting. We
remove discard stripe from hash list, so next time the strip will be fully
initialized.
Suitable for backport to 3.7+.
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 37c61ff31e9b5e3fcf3cc6579f5c68f6ad40c4b1 upstream.
SCSI layer will add new payload for discard request. If two bios are merged
to one, the second bio has bi_vcnt 1 which is set in raid5. This will confuse
SCSI and cause oops.
Suitable for backport to 3.7+
Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 43b7c6c6a4e3916edd186ceb61be0c67d1e0969e upstream.
Shifting page->index on 32 bit systems was overflowing, causing
data corruption of > 4GB files. Fix this by casting it first.
https://launchpad.net/bugs/1243636
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Lars Duesing <lars.duesing@camelotsweb.de>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3edc8376c06133e3386265a824869cad03a4efd4 upstream.
In 'decrypt_pki_encrypted_session_key' function:
Initializes 'payload' pointer and releases it on exit.
Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 10c580e4239df5c3344ca00322eca86ab2de880b upstream.
Sujit has found a race condition that would make q->nr_pending
unbalanced, it occurs as Sujit explained:
"
sd_probe_async() ->
add_disk() ->
disk_add_event() ->
schedule(disk_events_workfn)
sd_revalidate_disk()
blk_pm_runtime_init()
return;
Let's say the disk_events_workfn() calls sd_check_events() which tries
to send test_unit_ready() and because of sd_revalidate_disk() trying to
send another commands the test_unit_ready() might be re-queued as the
tagged command queuing is disabled.
So the race condition is -
Thread 1 | Thread 2
sd_revalidate_disk() | sd_check_events()
...nr_pending = 0 as q->dev = NULL| scsi_queue_insert()
blk_runtime_pm_init() | blk_pm_requeue_request() ->
| nr_pending = -1 since
| q->dev != NULL
"
The problem is, the test_unit_ready request doesn't get counted the
first time it is queued, so the later decrement of q->nr_pending in
blk_pm_requeue_request makes it unbalanced.
Fix this by calling blk_pm_runtime_init before add_disk so that all
requests initiated there will all be counted.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Reported-and-tested-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6541932ea2f7de0b0c5203decf666b143ad5fa33 upstream.
This fixes an oops caused by buslogic driver when initializing a BusLogic
MultiMaster adapter. Initialization code used scope of a variable
incorrectly which created a NULL pointer. Oops message is below:
BUG: unable to handle kernel NULL pointer dereference at 0000000c
IP: [<c150c137>] blogic_init_mm_probeinfo.isra.17+0x20a/0x583
*pde = 00000000
Oops: 002 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.11.1.puz1 #1
Hardware name: /Canterwood, BIOS 6.00 PG 05/16/2003
task: f7050000 ti: f7054000 task.ti: f7054000
EIP: 0060:[<c150c137>] EFLAGS: 00010246 CPU:1
EIP is at blogic_init_mm_probeinfo.isra.17+0x20a/0x583
EAX: 00000013 EBX: 00000000 ECX: 00000000 EDX: f8001000
ESI: f71cb800 EDI: f7388000 EBP: 00007800 ESP: f7055c84
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0: 8005003b CR2: 0000000c CR3: 0154f000 CR4: 000007d0
Stack:
0000001c 00000000 c11a59f6 f7055c98 00008130 ffffffff ffffffff 00000000
00000003 00000000 00000000 00000000 00000013 f8001000 00000001 000003d0
00000000 00000000 00000000 c14e3f84 f78803c8 00000000 f738c000 000000e9
Call Trace:
[<c11a59f6>] ? pci_get_subsys+0x33/0x38
[<c150c4fb>] ? blogic_init_probeinfo_list+0x4b/0x19e
[<c108d593>] ? __alloc_pages_nodemask+0xe3/0x623
[<c108d593>] ? __alloc_pages_nodemask+0xe3/0x623
[<c10fb99e>] ? sysfs_link_sibling+0x61/0x8d
[<c10b0519>] ? kmem_cache_alloc+0x8b/0xb5
[<c150cce5>] ? blogic_init+0xa1/0x10e8
[<c10fc0a8>] ? sysfs_add_one+0x10/0x9d
[<c10fc18a>] ? sysfs_addrm_finish+0x12/0x85
[<c10fca37>] ? sysfs_do_create_link_sd+0x9d/0x1b4
[<c117c272>] ? blk_register_queue+0x69/0xb3
[<c10fcb68>] ? sysfs_create_link+0x1a/0x2c
[<c1181a07>] ? add_disk+0x1a1/0x3c7
[<c138737b>] ? klist_next+0x60/0xc3
[<c122cc3a>] ? scsi_dh_detach+0x68/0x68
[<c1213e36>] ? bus_for_each_dev+0x51/0x61
[<c1000356>] ? do_one_initcall+0x22/0x12c
[<c10f3688>] ? __proc_create+0x8c/0xba
[<c150cc44>] ? blogic_setup+0x5f6/0x5f6
[<c14e94aa>] ? repair_env_string+0xf/0x4d
[<c14e949b>] ? do_early_param+0x71/0x71
[<c103efaa>] ? parse_args+0x21f/0x33d
[<c14e9a54>] ? kernel_init_freeable+0xdf/0x17d
[<c14e949b>] ? do_early_param+0x71/0x71
[<c1388b64>] ? kernel_init+0x8/0xc0
[<c1392222>] ? ret_from_kernel_thread+0x6/0x28
[<c1392227>] ? ret_from_kernel_thread+0x1b/0x28
[<c1388b5c>] ? rest_init+0x6c/0x6c
Code: 89 44 24 10 0f b6 44 24 3d 89 44 24 0c c7 44 24 08 00 00 00 00 c7 44 24 04 38 62 46 c1 c7 04 24 02 00 00 00 e8 78 13 d2 ff 31 db <89> 6b 0c b0 20 89 ea ee
c7 44 24 08 04 00 00 00 8d 44 24 4c 89
EIP: [<c150c137>] blogic_init_mm_probeinfo.isra.17+0x20a/0x583 SS:ESP 0068:f7055c84
CR2: 000000000000000c
---[ end trace 17f45f5196d40487 ]---
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com>
Reported-by: Pierre Uszynski <pierre@rahul.net>
Tested-by: Pierre Uszynski <pierre@rahul.net>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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abort pending TX
commit d5a7b406c529e4595ce03dc8f6dcf7fa36f106fa upstream.
In patch
0d1862e can: flexcan: fix flexcan_chip_start() on imx6
the loop in flexcan_chip_start() that iterates over all mailboxes after the
soft reset of the CAN core was removed. This loop put all mailboxes (even the
ones marked as reserved 1...7) into EMPTY/INACTIVE mode. On mailboxes 8...63,
this aborts any pending TX messages.
After a cold boot there is random garbage in the mailboxes, which leads to
spontaneous transmit of CAN frames during first activation. Further if the
interface was disabled with a pending message (usually due to an error
condition on the CAN bus), this message is retransmitted after enabling the
interface again.
This patch fixes the regression by:
1) Limiting the maximum number of used mailboxes to 8, 0...7 are used by the RX
FIFO, 8 is used by TX.
2) Marking the TX mailbox as EMPTY/INACTIVE, so that any pending TX of that
mailbox is aborted.
Cc: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e358784297992b012e8071764d996191dd2b1a54 upstream.
The current implemetation of of_match_device() relies that the of_device_id
table in the driver is sorted from most specific to least specific compatible.
Without this patch the mx28 is detected as the less specific p1010. This leads
to a p1010 specific workaround is activated on the mx28, which is not needed.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5abbeea553c8260ed4e2ac4aae962aff800b6c6d upstream.
In commit:
3078cde7 can: at91_can: add dt support
device tree support was added to the at91_can driver. In this commit the
mapping of device to driver data was mixed up. This results in the sam9x5
parameters being used for the sam9263 and the workaround for the broken mailbox
0 on the sam9263 not being activated.
This patch fixes the broken platform_device_id table.
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8660998608cfa1077e560034db81885af8e1e885 upstream.
If insert_inode_locked() fails, we shouldn't be calling
unlock_new_inode().
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Tested-by: Michael L. Semon <mlsemon35@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 08a5dd3842f2ac61c6d69661d2d96022df8ae359 upstream.
Add some new PCI IDs to the table for 6000, 6005 and 6235 series.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5a3e9f7f8c8768b5f7df81100c684e4cd00a6eb5 upstream.
When RFKill cuts short a scan, mac80211 cancels the scan.
This is done by sending a host command to the firmware, but
this command was dropped because of RFKill. Flag this
command as "SEND_IN_RFKILL" to make sure it is sent to the
firmware. The firmware will send SCAN_COMPLETE_NOTIFICATION
which will trigger a call to ieee80211_scan_completed.
If the scan cannot be aborted, it is because the firmware
already finished the scan but we hadn't notified mac80211
at the time mac80211 decided to cancel the scan. By the time
we see the scan could not be aborted, mac80211 has been
notified already.
This patch fixes situations in which we didn't notify
mac80211 upon completion of the scan that was cut short
by RFkill.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9473ca6e920a3b9ca902753ce52833657f9221cc upstream.
An error in calculating the offset in an skb causes the driver to read
essential device info from the wrong locations. The main effect is that
automatic gain calculations are nonsense.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 453b0c3f6910672f79da354077af728d92f95c5b upstream.
601216e "mwifiex: process RX packets in SDIO IRQ thread directly"
introduced a command timeout issue which can be reproduced easily on
an AM33xx platform using a test application written by Daniel Mack:
https://gist.github.com/zonque/6579314
mwifiex_main_process() is called from both the SDIO handler and
the workqueue. In case an interrupt occurs right after the
int_status check, but before updating the mwifiex_processing flag,
this interrupt gets lost, resulting in a command timeout and
consequently a card reset.
Let main_proc_lock protect both int_status and mwifiex_processing
flag. This fixes the interrupt lost issue.
Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Reported-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Paul Stewart <pstew@chromium.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f478f33a93f9353dcd1fe55445343d76b1c3f84a upstream.
Fix kernel warning when using WEXT for configuring ad-hoc mode,
e.g. "iwconfig wlan0 essid test channel 1"
WARNING: at net/wireless/chan.c:373 cfg80211_chandef_usable+0x50/0x21c [cfg80211]()
The warning is caused by an uninitialized variable center_freq1.
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 180032973ee97daddf5c9d733e5b425b108f8679 upstream.
Use MONITOR_FLAG_ACTIVE, which is a flag mask, instead of
NL80211_MNTR_FLAG_ACTIVE, which is a flag index, when checking if the
hardware supports active monitoring.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ec30326ea773900da210c495e14cfeb532550ba2 upstream.
Otherwise, if queues are full during a scan, tx scheduling does not
resume after switching back to the home channel.
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>
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commit d86aa4f8ca58898ec6a94c0635da20b948171ed7 upstream.
If a frame's timestamp is calculated, and the bitrate
calculation goes wrong and returns zero, the system
will attempt to divide by zero and crash. Catch this
case and print the rate information that the driver
reported when this happens.
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0c5b93290b2f3c7a376567c03ae8d385b0e99851 upstream.
When clients are idle for too long, hostapd sends nullfunc frames for
probing. When those are acked by the client, the idle time needs to be
updated.
To make this work (and to avoid unnecessary probing), update sta->last_rx
whenever an ACK was received for a tx packet. Only do this if the flag
IEEE80211_HW_REPORTS_TX_ACK_STATUS is set.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 03bb7f42765ce596604f03d179f3137d7df05bba upstream.
This allows calls for clients in AP_VLANs (e.g. for 4-addr) to succeed
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6329b8d917adc077caa60c2447385554130853a3 upstream.
If an Ad-Hoc node receives packets with the Cell ID or its own MAC
address as source address, it hits a WARN_ON in sta_info_insert_check()
With many packets, this can massively spam the logs. One way that this
can easily happen is through having Cisco APs in the area with rouge AP
detection and countermeasures enabled.
Such Cisco APs will regularly send fake beacons, disassoc and deauth
packets that trigger these warnings.
To fix this issue, drop such spoofed packets early in the rx path.
Reported-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit a754055a1296fcbe6f32de3a5eaca6efb2fd1865 upstream.
__ieee80211_scan_completed is called from a worker. This
means that the following flow is possible.
* driver calls ieee80211_scan_completed
* mac80211 cancels the scan (that is already complete)
* __ieee80211_scan_completed runs
When scan_work will finally run, it will see that the scan
hasn't been aborted and might even trigger another scan on
another band. This leads to a situation where cfg80211's
scan is not done and no further scan can be issued.
Fix this by setting a new flag when a HW scan is being
cancelled so that no other scan will be triggered.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ea84753c98a7ac6b74e530b64c444a912b3835ca upstream.
Both Anjana and Eunki reported a stall in the while_each_thread loop
in cgroup_attach_task().
It's because, when we attach a single thread to a cgroup, if the cgroup
is exiting or is already in that cgroup, we won't break the loop.
If the task is already in the cgroup, the bug can lead to another thread
being attached to the cgroup unexpectedly:
# echo 5207 > tasks
# cat tasks
5207
# echo 5207 > tasks
# cat tasks
5207
5215
What's worse, if the task to be attached isn't the leader of the thread
group, we might never exit the loop, hence cpu stall. Thanks for Oleg's
analysis.
This bug was introduced by commit 081aa458c38ba576bdd4265fc807fa95b48b9e79
("cgroup: consolidate cgroup_attach_task() and cgroup_attach_proc()")
[ lizf: - fixed the first continue, pointed out by Oleg,
- rewrote changelog. ]
Reported-by: Eunki Kim <eunki_kim@samsung.com>
Reported-by: Anjana V Kumar <anjanavk12@gmail.com>
Signed-off-by: Anjana V Kumar <anjanavk12@gmail.com>
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 86b84167d4e67372376a57ea9955c5d53dae232f upstream.
The LEGO-wiimote uses a different VID than the Nintendo ID. The device is
technically the same so add the ID.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d4eddd42f592a0cf06818fae694a3d271f842e4d upstream.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 52e0a509e5d6f902ec26bc2a8bb02b137dc453be upstream.
If the system is suspended while max_perf_pct is less than 100 percent
or no_turbo set policy->{min,max} will be set incorrectly with scaled
values which turn the scaled values into hard limits.
References: https://bugzilla.kernel.org/show_bug.cgi?id=61241
Reported-by: Patrick Bartels <petzicus@googlemail.com>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0e8244322b7fc45fd11a1c45f70b6bacddf4986f upstream.
The index field of cpufreq_frequency_table has been renamed to
driver_data by commit 5070158 (cpufreq: rename index as driver_data
in cpufreq_frequency_table).
This patch updates the s3c64xx driver to match.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit dd3c9c4b603c664fedc12facf180db0f1794aafe upstream.
The UV3 hub revision ID is different than expected. The first
revision was supposed to start at 1 but instead will start at 0.
Signed-off-by: Russ Anderson <rja@sgi.com>
Link: http://lkml.kernel.org/r/20131014161733.GA6274@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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