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* Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044
@ 2015-09-01 16:21 ` Josh Boyer
  0 siblings, 0 replies; 6+ messages in thread
From: Josh Boyer @ 2015-09-01 16:21 UTC (permalink / raw)
  To: James Morris, Serge E. Hallyn, Tejun Heo
  Cc: linux-security-module, Linux-Kernel@Vger. Kernel. Org, cgroups

Hi All,

All of my test machines hit the backtrace below with Linus' tree as of
this morning.  Any ideas?

josh


[  +0.160966] ===============================
[  +0.000001] [ INFO: suspicious RCU usage. ]
[  +0.000002] 4.3.0-0.rc0.git1.1.fc24.x86_64 #1 Not tainted
[  +0.000001] -------------------------------
[  +0.000002] security/device_cgroup.c:405 device_cgroup:verify_new_ex
called without proper synchronization!
[  +0.000000]
              other info that might help us debug this:

[  +0.000001]
              rcu_scheduler_active = 1, debug_locks = 0
[  +0.000002] 4 locks held by systemd/1:
[  +0.000010]  #0:  (sb_writers#6){.+.+.+}, at: [<ffffffff81267f87>]
vfs_write+0x187/0x1a0
[  +0.000006]  #1:  (&of->mutex){+.+.+.}, at: [<ffffffff812f3996>]
kernfs_fop_write+0x66/0x190
[  +0.000005]  #2:  (s_active#61){++++.+}, at: [<ffffffff812f399e>]
kernfs_fop_write+0x6e/0x190
[  +0.000007]  #3:  (devcgroup_mutex){+.+...}, at:
[<ffffffff813ada3c>] devcgroup_access_write+0x3c/0x6e0
[  +0.000000]
              stack backtrace:
[  +0.000003] CPU: 3 PID: 1 Comm: systemd Not tainted
4.3.0-0.rc0.git1.1.fc24.x86_64 #1
[  +0.000001] Hardware name:                  /D34010WYK, BIOS
WYLPT10H.86A.0026.2014.0514.1714 05/14/2014
[  +0.000004]  0000000000000000 000000006dc9945a ffff88040ce73c68
ffffffff8184e49c
[  +0.000003]  0000000000000000 ffff88040cdd4000 ffff88040ce73c98
ffffffff81101437
[  +0.000003]  ffff880408646d00 ffff88040ce73d00 0000000000000002
0000000000000001
[  +0.000001] Call Trace:
[  +0.000006]  [<ffffffff8184e49c>] dump_stack+0x4c/0x65
[  +0.000004]  [<ffffffff81101437>] lockdep_rcu_suspicious+0xd7/0x110
[  +0.000004]  [<ffffffff813ad6e8>] verify_new_ex+0xd8/0xe0
[  +0.000003]  [<ffffffff813addaf>] devcgroup_access_write+0x3af/0x6e0
[  +0.000005]  [<ffffffff81023999>] ? sched_clock+0x9/0x10
[  +0.000004]  [<ffffffff811599e4>] cgroup_file_write+0x44/0x1e0
[  +0.000003]  [<ffffffff812f3a71>] kernfs_fop_write+0x141/0x190
[  +0.000002]  [<ffffffff81267497>] __vfs_write+0x37/0x100
[  +0.000002]  [<ffffffff81267f87>] ? vfs_write+0x187/0x1a0
[  +0.000004]  [<ffffffff8138929d>] ? security_file_permission+0x3d/0xc0
[  +0.000002]  [<ffffffff81267ea9>] vfs_write+0xa9/0x1a0
[  +0.000003]  [<ffffffff81268bc8>] SyS_write+0x58/0xd0
[  +0.000004]  [<ffffffff818580ee>] entry_SYSCALL_64_fastpath+0x12/0x76

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044
@ 2015-09-01 16:21 ` Josh Boyer
  0 siblings, 0 replies; 6+ messages in thread
From: Josh Boyer @ 2015-09-01 16:21 UTC (permalink / raw)
  To: James Morris, Serge E. Hallyn, Tejun Heo
  Cc: linux-security-module, Linux-Kernel@Vger. Kernel. Org,
	cgroups-u79uwXL29TY76Z2rM5mHXA

Hi All,

All of my test machines hit the backtrace below with Linus' tree as of
this morning.  Any ideas?

josh


[  +0.160966] ===============================
[  +0.000001] [ INFO: suspicious RCU usage. ]
[  +0.000002] 4.3.0-0.rc0.git1.1.fc24.x86_64 #1 Not tainted
[  +0.000001] -------------------------------
[  +0.000002] security/device_cgroup.c:405 device_cgroup:verify_new_ex
called without proper synchronization!
[  +0.000000]
              other info that might help us debug this:

[  +0.000001]
              rcu_scheduler_active = 1, debug_locks = 0
[  +0.000002] 4 locks held by systemd/1:
[  +0.000010]  #0:  (sb_writers#6){.+.+.+}, at: [<ffffffff81267f87>]
vfs_write+0x187/0x1a0
[  +0.000006]  #1:  (&of->mutex){+.+.+.}, at: [<ffffffff812f3996>]
kernfs_fop_write+0x66/0x190
[  +0.000005]  #2:  (s_active#61){++++.+}, at: [<ffffffff812f399e>]
kernfs_fop_write+0x6e/0x190
[  +0.000007]  #3:  (devcgroup_mutex){+.+...}, at:
[<ffffffff813ada3c>] devcgroup_access_write+0x3c/0x6e0
[  +0.000000]
              stack backtrace:
[  +0.000003] CPU: 3 PID: 1 Comm: systemd Not tainted
4.3.0-0.rc0.git1.1.fc24.x86_64 #1
[  +0.000001] Hardware name:                  /D34010WYK, BIOS
WYLPT10H.86A.0026.2014.0514.1714 05/14/2014
[  +0.000004]  0000000000000000 000000006dc9945a ffff88040ce73c68
ffffffff8184e49c
[  +0.000003]  0000000000000000 ffff88040cdd4000 ffff88040ce73c98
ffffffff81101437
[  +0.000003]  ffff880408646d00 ffff88040ce73d00 0000000000000002
0000000000000001
[  +0.000001] Call Trace:
[  +0.000006]  [<ffffffff8184e49c>] dump_stack+0x4c/0x65
[  +0.000004]  [<ffffffff81101437>] lockdep_rcu_suspicious+0xd7/0x110
[  +0.000004]  [<ffffffff813ad6e8>] verify_new_ex+0xd8/0xe0
[  +0.000003]  [<ffffffff813addaf>] devcgroup_access_write+0x3af/0x6e0
[  +0.000005]  [<ffffffff81023999>] ? sched_clock+0x9/0x10
[  +0.000004]  [<ffffffff811599e4>] cgroup_file_write+0x44/0x1e0
[  +0.000003]  [<ffffffff812f3a71>] kernfs_fop_write+0x141/0x190
[  +0.000002]  [<ffffffff81267497>] __vfs_write+0x37/0x100
[  +0.000002]  [<ffffffff81267f87>] ? vfs_write+0x187/0x1a0
[  +0.000004]  [<ffffffff8138929d>] ? security_file_permission+0x3d/0xc0
[  +0.000002]  [<ffffffff81267ea9>] vfs_write+0xa9/0x1a0
[  +0.000003]  [<ffffffff81268bc8>] SyS_write+0x58/0xd0
[  +0.000004]  [<ffffffff818580ee>] entry_SYSCALL_64_fastpath+0x12/0x76

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044
@ 2015-09-01 16:37   ` Paul Moore
  0 siblings, 0 replies; 6+ messages in thread
From: Paul Moore @ 2015-09-01 16:37 UTC (permalink / raw)
  To: Josh Boyer
  Cc: James Morris, Serge E. Hallyn, Tejun Heo, linux-security-module,
	Linux-Kernel@Vger. Kernel. Org, cgroups

On Tue, Sep 1, 2015 at 12:21 PM, Josh Boyer <jwboyer@fedoraproject.org> wrote:
> Hi All,
>
> All of my test machines hit the backtrace below with Linus' tree as of
> this morning.  Any ideas?

It looks like you are seeing the same as below:

 * https://lkml.org/lkml/2015/8/31/440

> [  +0.160966] ===============================
> [  +0.000001] [ INFO: suspicious RCU usage. ]
> [  +0.000002] 4.3.0-0.rc0.git1.1.fc24.x86_64 #1 Not tainted
> [  +0.000001] -------------------------------
> [  +0.000002] security/device_cgroup.c:405 device_cgroup:verify_new_ex
> called without proper synchronization!
> [  +0.000000]
>               other info that might help us debug this:
>
> [  +0.000001]
>               rcu_scheduler_active = 1, debug_locks = 0
> [  +0.000002] 4 locks held by systemd/1:
> [  +0.000010]  #0:  (sb_writers#6){.+.+.+}, at: [<ffffffff81267f87>]
> vfs_write+0x187/0x1a0
> [  +0.000006]  #1:  (&of->mutex){+.+.+.}, at: [<ffffffff812f3996>]
> kernfs_fop_write+0x66/0x190
> [  +0.000005]  #2:  (s_active#61){++++.+}, at: [<ffffffff812f399e>]
> kernfs_fop_write+0x6e/0x190
> [  +0.000007]  #3:  (devcgroup_mutex){+.+...}, at:
> [<ffffffff813ada3c>] devcgroup_access_write+0x3c/0x6e0
> [  +0.000000]
>               stack backtrace:
> [  +0.000003] CPU: 3 PID: 1 Comm: systemd Not tainted
> 4.3.0-0.rc0.git1.1.fc24.x86_64 #1
> [  +0.000001] Hardware name:                  /D34010WYK, BIOS
> WYLPT10H.86A.0026.2014.0514.1714 05/14/2014
> [  +0.000004]  0000000000000000 000000006dc9945a ffff88040ce73c68
> ffffffff8184e49c
> [  +0.000003]  0000000000000000 ffff88040cdd4000 ffff88040ce73c98
> ffffffff81101437
> [  +0.000003]  ffff880408646d00 ffff88040ce73d00 0000000000000002
> 0000000000000001
> [  +0.000001] Call Trace:
> [  +0.000006]  [<ffffffff8184e49c>] dump_stack+0x4c/0x65
> [  +0.000004]  [<ffffffff81101437>] lockdep_rcu_suspicious+0xd7/0x110
> [  +0.000004]  [<ffffffff813ad6e8>] verify_new_ex+0xd8/0xe0
> [  +0.000003]  [<ffffffff813addaf>] devcgroup_access_write+0x3af/0x6e0
> [  +0.000005]  [<ffffffff81023999>] ? sched_clock+0x9/0x10
> [  +0.000004]  [<ffffffff811599e4>] cgroup_file_write+0x44/0x1e0
> [  +0.000003]  [<ffffffff812f3a71>] kernfs_fop_write+0x141/0x190
> [  +0.000002]  [<ffffffff81267497>] __vfs_write+0x37/0x100
> [  +0.000002]  [<ffffffff81267f87>] ? vfs_write+0x187/0x1a0
> [  +0.000004]  [<ffffffff8138929d>] ? security_file_permission+0x3d/0xc0
> [  +0.000002]  [<ffffffff81267ea9>] vfs_write+0xa9/0x1a0
> [  +0.000003]  [<ffffffff81268bc8>] SyS_write+0x58/0xd0
> [  +0.000004]  [<ffffffff818580ee>] entry_SYSCALL_64_fastpath+0x12/0x76
> --
> To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html



-- 
paul moore
www.paul-moore.com

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044
@ 2015-09-01 16:37   ` Paul Moore
  0 siblings, 0 replies; 6+ messages in thread
From: Paul Moore @ 2015-09-01 16:37 UTC (permalink / raw)
  To: Josh Boyer
  Cc: James Morris, Serge E. Hallyn, Tejun Heo, linux-security-module,
	Linux-Kernel@Vger. Kernel. Org, cgroups-u79uwXL29TY76Z2rM5mHXA

On Tue, Sep 1, 2015 at 12:21 PM, Josh Boyer <jwboyer-rxtnV0ftBwyoClj4AeEUq9i2O/JbrIOy@public.gmane.org> wrote:
> Hi All,
>
> All of my test machines hit the backtrace below with Linus' tree as of
> this morning.  Any ideas?

It looks like you are seeing the same as below:

 * https://lkml.org/lkml/2015/8/31/440

> [  +0.160966] ===============================
> [  +0.000001] [ INFO: suspicious RCU usage. ]
> [  +0.000002] 4.3.0-0.rc0.git1.1.fc24.x86_64 #1 Not tainted
> [  +0.000001] -------------------------------
> [  +0.000002] security/device_cgroup.c:405 device_cgroup:verify_new_ex
> called without proper synchronization!
> [  +0.000000]
>               other info that might help us debug this:
>
> [  +0.000001]
>               rcu_scheduler_active = 1, debug_locks = 0
> [  +0.000002] 4 locks held by systemd/1:
> [  +0.000010]  #0:  (sb_writers#6){.+.+.+}, at: [<ffffffff81267f87>]
> vfs_write+0x187/0x1a0
> [  +0.000006]  #1:  (&of->mutex){+.+.+.}, at: [<ffffffff812f3996>]
> kernfs_fop_write+0x66/0x190
> [  +0.000005]  #2:  (s_active#61){++++.+}, at: [<ffffffff812f399e>]
> kernfs_fop_write+0x6e/0x190
> [  +0.000007]  #3:  (devcgroup_mutex){+.+...}, at:
> [<ffffffff813ada3c>] devcgroup_access_write+0x3c/0x6e0
> [  +0.000000]
>               stack backtrace:
> [  +0.000003] CPU: 3 PID: 1 Comm: systemd Not tainted
> 4.3.0-0.rc0.git1.1.fc24.x86_64 #1
> [  +0.000001] Hardware name:                  /D34010WYK, BIOS
> WYLPT10H.86A.0026.2014.0514.1714 05/14/2014
> [  +0.000004]  0000000000000000 000000006dc9945a ffff88040ce73c68
> ffffffff8184e49c
> [  +0.000003]  0000000000000000 ffff88040cdd4000 ffff88040ce73c98
> ffffffff81101437
> [  +0.000003]  ffff880408646d00 ffff88040ce73d00 0000000000000002
> 0000000000000001
> [  +0.000001] Call Trace:
> [  +0.000006]  [<ffffffff8184e49c>] dump_stack+0x4c/0x65
> [  +0.000004]  [<ffffffff81101437>] lockdep_rcu_suspicious+0xd7/0x110
> [  +0.000004]  [<ffffffff813ad6e8>] verify_new_ex+0xd8/0xe0
> [  +0.000003]  [<ffffffff813addaf>] devcgroup_access_write+0x3af/0x6e0
> [  +0.000005]  [<ffffffff81023999>] ? sched_clock+0x9/0x10
> [  +0.000004]  [<ffffffff811599e4>] cgroup_file_write+0x44/0x1e0
> [  +0.000003]  [<ffffffff812f3a71>] kernfs_fop_write+0x141/0x190
> [  +0.000002]  [<ffffffff81267497>] __vfs_write+0x37/0x100
> [  +0.000002]  [<ffffffff81267f87>] ? vfs_write+0x187/0x1a0
> [  +0.000004]  [<ffffffff8138929d>] ? security_file_permission+0x3d/0xc0
> [  +0.000002]  [<ffffffff81267ea9>] vfs_write+0xa9/0x1a0
> [  +0.000003]  [<ffffffff81268bc8>] SyS_write+0x58/0xd0
> [  +0.000004]  [<ffffffff818580ee>] entry_SYSCALL_64_fastpath+0x12/0x76
> --
> To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html



-- 
paul moore
www.paul-moore.com

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044
@ 2015-09-01 16:59     ` Josh Boyer
  0 siblings, 0 replies; 6+ messages in thread
From: Josh Boyer @ 2015-09-01 16:59 UTC (permalink / raw)
  To: Paul Moore
  Cc: James Morris, Serge E. Hallyn, Tejun Heo, linux-security-module,
	Linux-Kernel@Vger. Kernel. Org, cgroups

On Tue, Sep 1, 2015 at 12:37 PM, Paul Moore <paul@paul-moore.com> wrote:
> On Tue, Sep 1, 2015 at 12:21 PM, Josh Boyer <jwboyer@fedoraproject.org> wrote:
>> Hi All,
>>
>> All of my test machines hit the backtrace below with Linus' tree as of
>> this morning.  Any ideas?
>
> It looks like you are seeing the same as below:
>
>  * https://lkml.org/lkml/2015/8/31/440

Indeed.  I'll keep an eye on that thread and see if another patch comes from it.

josh

>
>> [  +0.160966] ===============================
>> [  +0.000001] [ INFO: suspicious RCU usage. ]
>> [  +0.000002] 4.3.0-0.rc0.git1.1.fc24.x86_64 #1 Not tainted
>> [  +0.000001] -------------------------------
>> [  +0.000002] security/device_cgroup.c:405 device_cgroup:verify_new_ex
>> called without proper synchronization!
>> [  +0.000000]
>>               other info that might help us debug this:
>>
>> [  +0.000001]
>>               rcu_scheduler_active = 1, debug_locks = 0
>> [  +0.000002] 4 locks held by systemd/1:
>> [  +0.000010]  #0:  (sb_writers#6){.+.+.+}, at: [<ffffffff81267f87>]
>> vfs_write+0x187/0x1a0
>> [  +0.000006]  #1:  (&of->mutex){+.+.+.}, at: [<ffffffff812f3996>]
>> kernfs_fop_write+0x66/0x190
>> [  +0.000005]  #2:  (s_active#61){++++.+}, at: [<ffffffff812f399e>]
>> kernfs_fop_write+0x6e/0x190
>> [  +0.000007]  #3:  (devcgroup_mutex){+.+...}, at:
>> [<ffffffff813ada3c>] devcgroup_access_write+0x3c/0x6e0
>> [  +0.000000]
>>               stack backtrace:
>> [  +0.000003] CPU: 3 PID: 1 Comm: systemd Not tainted
>> 4.3.0-0.rc0.git1.1.fc24.x86_64 #1
>> [  +0.000001] Hardware name:                  /D34010WYK, BIOS
>> WYLPT10H.86A.0026.2014.0514.1714 05/14/2014
>> [  +0.000004]  0000000000000000 000000006dc9945a ffff88040ce73c68
>> ffffffff8184e49c
>> [  +0.000003]  0000000000000000 ffff88040cdd4000 ffff88040ce73c98
>> ffffffff81101437
>> [  +0.000003]  ffff880408646d00 ffff88040ce73d00 0000000000000002
>> 0000000000000001
>> [  +0.000001] Call Trace:
>> [  +0.000006]  [<ffffffff8184e49c>] dump_stack+0x4c/0x65
>> [  +0.000004]  [<ffffffff81101437>] lockdep_rcu_suspicious+0xd7/0x110
>> [  +0.000004]  [<ffffffff813ad6e8>] verify_new_ex+0xd8/0xe0
>> [  +0.000003]  [<ffffffff813addaf>] devcgroup_access_write+0x3af/0x6e0
>> [  +0.000005]  [<ffffffff81023999>] ? sched_clock+0x9/0x10
>> [  +0.000004]  [<ffffffff811599e4>] cgroup_file_write+0x44/0x1e0
>> [  +0.000003]  [<ffffffff812f3a71>] kernfs_fop_write+0x141/0x190
>> [  +0.000002]  [<ffffffff81267497>] __vfs_write+0x37/0x100
>> [  +0.000002]  [<ffffffff81267f87>] ? vfs_write+0x187/0x1a0
>> [  +0.000004]  [<ffffffff8138929d>] ? security_file_permission+0x3d/0xc0
>> [  +0.000002]  [<ffffffff81267ea9>] vfs_write+0xa9/0x1a0
>> [  +0.000003]  [<ffffffff81268bc8>] SyS_write+0x58/0xd0
>> [  +0.000004]  [<ffffffff818580ee>] entry_SYSCALL_64_fastpath+0x12/0x76
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
>
> --
> paul moore
> www.paul-moore.com

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044
@ 2015-09-01 16:59     ` Josh Boyer
  0 siblings, 0 replies; 6+ messages in thread
From: Josh Boyer @ 2015-09-01 16:59 UTC (permalink / raw)
  To: Paul Moore
  Cc: James Morris, Serge E. Hallyn, Tejun Heo, linux-security-module,
	Linux-Kernel@Vger. Kernel. Org, cgroups-u79uwXL29TY76Z2rM5mHXA

On Tue, Sep 1, 2015 at 12:37 PM, Paul Moore <paul-r2n+y4ga6xFZroRs9YW3xA@public.gmane.org> wrote:
> On Tue, Sep 1, 2015 at 12:21 PM, Josh Boyer <jwboyer-rxtnV0ftBwyoClj4AeEUq9i2O/JbrIOy@public.gmane.org> wrote:
>> Hi All,
>>
>> All of my test machines hit the backtrace below with Linus' tree as of
>> this morning.  Any ideas?
>
> It looks like you are seeing the same as below:
>
>  * https://lkml.org/lkml/2015/8/31/440

Indeed.  I'll keep an eye on that thread and see if another patch comes from it.

josh

>
>> [  +0.160966] ===============================
>> [  +0.000001] [ INFO: suspicious RCU usage. ]
>> [  +0.000002] 4.3.0-0.rc0.git1.1.fc24.x86_64 #1 Not tainted
>> [  +0.000001] -------------------------------
>> [  +0.000002] security/device_cgroup.c:405 device_cgroup:verify_new_ex
>> called without proper synchronization!
>> [  +0.000000]
>>               other info that might help us debug this:
>>
>> [  +0.000001]
>>               rcu_scheduler_active = 1, debug_locks = 0
>> [  +0.000002] 4 locks held by systemd/1:
>> [  +0.000010]  #0:  (sb_writers#6){.+.+.+}, at: [<ffffffff81267f87>]
>> vfs_write+0x187/0x1a0
>> [  +0.000006]  #1:  (&of->mutex){+.+.+.}, at: [<ffffffff812f3996>]
>> kernfs_fop_write+0x66/0x190
>> [  +0.000005]  #2:  (s_active#61){++++.+}, at: [<ffffffff812f399e>]
>> kernfs_fop_write+0x6e/0x190
>> [  +0.000007]  #3:  (devcgroup_mutex){+.+...}, at:
>> [<ffffffff813ada3c>] devcgroup_access_write+0x3c/0x6e0
>> [  +0.000000]
>>               stack backtrace:
>> [  +0.000003] CPU: 3 PID: 1 Comm: systemd Not tainted
>> 4.3.0-0.rc0.git1.1.fc24.x86_64 #1
>> [  +0.000001] Hardware name:                  /D34010WYK, BIOS
>> WYLPT10H.86A.0026.2014.0514.1714 05/14/2014
>> [  +0.000004]  0000000000000000 000000006dc9945a ffff88040ce73c68
>> ffffffff8184e49c
>> [  +0.000003]  0000000000000000 ffff88040cdd4000 ffff88040ce73c98
>> ffffffff81101437
>> [  +0.000003]  ffff880408646d00 ffff88040ce73d00 0000000000000002
>> 0000000000000001
>> [  +0.000001] Call Trace:
>> [  +0.000006]  [<ffffffff8184e49c>] dump_stack+0x4c/0x65
>> [  +0.000004]  [<ffffffff81101437>] lockdep_rcu_suspicious+0xd7/0x110
>> [  +0.000004]  [<ffffffff813ad6e8>] verify_new_ex+0xd8/0xe0
>> [  +0.000003]  [<ffffffff813addaf>] devcgroup_access_write+0x3af/0x6e0
>> [  +0.000005]  [<ffffffff81023999>] ? sched_clock+0x9/0x10
>> [  +0.000004]  [<ffffffff811599e4>] cgroup_file_write+0x44/0x1e0
>> [  +0.000003]  [<ffffffff812f3a71>] kernfs_fop_write+0x141/0x190
>> [  +0.000002]  [<ffffffff81267497>] __vfs_write+0x37/0x100
>> [  +0.000002]  [<ffffffff81267f87>] ? vfs_write+0x187/0x1a0
>> [  +0.000004]  [<ffffffff8138929d>] ? security_file_permission+0x3d/0xc0
>> [  +0.000002]  [<ffffffff81267ea9>] vfs_write+0xa9/0x1a0
>> [  +0.000003]  [<ffffffff81268bc8>] SyS_write+0x58/0xd0
>> [  +0.000004]  [<ffffffff818580ee>] entry_SYSCALL_64_fastpath+0x12/0x76
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
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>
>
>
> --
> paul moore
> www.paul-moore.com

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2015-09-01 16:59 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-09-01 16:21 Security/cgroup suspicious RCU usage with v4.2-2744-g65a99597f044 Josh Boyer
2015-09-01 16:21 ` Josh Boyer
2015-09-01 16:37 ` Paul Moore
2015-09-01 16:37   ` Paul Moore
2015-09-01 16:59   ` Josh Boyer
2015-09-01 16:59     ` Josh Boyer

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