* oops in fs/dcache.c:536 with 3.4.107
@ 2015-05-21 0:03 Daniel Wittmer
2015-05-22 0:39 ` Daniel Wittmer
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Wittmer @ 2015-05-21 0:03 UTC (permalink / raw)
To: linux-kernel; +Cc: Alan Thompson
Hi all,
We've recently started to encounter the below oops in fs/dcache.c:536
on a few machines running 3.4.107. Looking into changes to dcache.h/c
and fs/namei.c I'm not seeing any changes that may have caused or
addressed this issue.
Is this a known oops? Is there a fix in later versions that I may have missed?
Thanks in advance,
Dan
------------[ cut here ]------------
kernel BUG at fs/dcache.c:536!
invalid opcode: 0000 [#1] SMP
CPU 1
Modules linked in:
Pid: 22588, comm: <snip> Not tainted 3.4.107<snip>
RIP: 0010:[<ffffffff810eaf8e>] [<ffffffff810eaf8e>] dput+0x1be/0x1c0
RSP: 0018:ffff8817c24cdc18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88183683ac48 RCX: 0000000000006564
RDX: 0000000000006464 RSI: 0000000000000011 RDI: ffff88183683aca8
RBP: ffff8817c24cdc38 R08: 0000000000000000 R09: ffff88183682df08
R10: ffff88183682ded0 R11: 0000000000000009 R12: ffff88177229c3f5
R13: ffff8818368e7d20 R14: ffff88183683aca8 R15: 0000000000000003
FS: 00007feaade39700(0000) GS:ffff88183f220000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feabdec6000 CR3: 000000170ed8f000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process longplanner_wor (pid: 22588, threadinfo ffff8817c24cc000, task
ffff8817c1df8080)
Stack:
ffff8817c24cddc8 ffff88177229c3f5 ffff8818368e7d20 ffff8817c1df8080
ffff8817c24cdcf8 ffffffff810e1569 ffff88183683ac48 ffff88183683aca8
ffff8817c39c79c0 ffff88183683ac48 ffff8817c24cdc78 ffff8817c1df8080
Call Trace:
[<ffffffff810e1569>] link_path_walk+0x2a9/0x8a0
[<ffffffff810e24bf>] path_lookupat+0x36f/0x6f0
[<ffffffff810e286b>] do_path_lookup+0x2b/0x70
[<ffffffff810e4154>] user_path_at_empty+0x54/0xa0
[<ffffffff810d9874>] ? cp_new_stat+0xf4/0x110
[<ffffffff810e41ac>] user_path_at+0xc/0x10
[<ffffffff810d9a15>] vfs_fstatat+0x35/0x60
[<ffffffff810d9a76>] vfs_stat+0x16/0x20
[<ffffffff810d9b85>] sys_newstat+0x15/0x30
[<ffffffff814e42a2>] system_call_fastpath+0x16/0x1b
Code: 00 48 8d 90 20 01 00 00 48 89 93 a0 00 00 00 4c 89 a0 20 01 00
00 48 8b 83 80 00 00 00 83 80 30 01 00 00 01 e8 24 89 3f 00 eb 8b <0f>
0b 55 48 89 e5 41 57 41 56 4c 8d 7f 78 49 89 fe 41 55 4c 8d
RIP [<ffffffff810eaf8e>] dput+0x1be/0x1c0
RSP <ffff8817c24cdc18>
---[ end trace 835aa73d3e65f5b3 ]---
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: oops in fs/dcache.c:536 with 3.4.107
2015-05-21 0:03 oops in fs/dcache.c:536 with 3.4.107 Daniel Wittmer
@ 2015-05-22 0:39 ` Daniel Wittmer
2015-05-26 19:19 ` Daniel Wittmer
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Wittmer @ 2015-05-22 0:39 UTC (permalink / raw)
To: linux-kernel, viro; +Cc: Alan Thompson
<adding Al>
Hi Al,
I was wondering if the above oops (fs/dcache.c:536 in v7.4.107) was
what you were seeing for the "RCU pathwalk breakage when running into
a symlink overmounting something" issue
(https://lkml.org/lkml/2015/5/2/488) you recently fixed, or if this is
a diferent issue?
Thanks in advance,
Dan
On Wed, May 20, 2015 at 5:03 PM, Daniel Wittmer <wittmer@google.com> wrote:
> Hi all,
>
> We've recently started to encounter the below oops in fs/dcache.c:536
> on a few machines running 3.4.107. Looking into changes to dcache.h/c
> and fs/namei.c I'm not seeing any changes that may have caused or
> addressed this issue.
>
> Is this a known oops? Is there a fix in later versions that I may have missed?
>
> Thanks in advance,
> Dan
>
> ------------[ cut here ]------------
> kernel BUG at fs/dcache.c:536!
> invalid opcode: 0000 [#1] SMP
> CPU 1
> Modules linked in:
>
> Pid: 22588, comm: <snip> Not tainted 3.4.107<snip>
> RIP: 0010:[<ffffffff810eaf8e>] [<ffffffff810eaf8e>] dput+0x1be/0x1c0
> RSP: 0018:ffff8817c24cdc18 EFLAGS: 00010246
> RAX: 0000000000000000 RBX: ffff88183683ac48 RCX: 0000000000006564
> RDX: 0000000000006464 RSI: 0000000000000011 RDI: ffff88183683aca8
> RBP: ffff8817c24cdc38 R08: 0000000000000000 R09: ffff88183682df08
> R10: ffff88183682ded0 R11: 0000000000000009 R12: ffff88177229c3f5
> R13: ffff8818368e7d20 R14: ffff88183683aca8 R15: 0000000000000003
> FS: 00007feaade39700(0000) GS:ffff88183f220000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007feabdec6000 CR3: 000000170ed8f000 CR4: 00000000000407e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process longplanner_wor (pid: 22588, threadinfo ffff8817c24cc000, task
> ffff8817c1df8080)
> Stack:
> ffff8817c24cddc8 ffff88177229c3f5 ffff8818368e7d20 ffff8817c1df8080
> ffff8817c24cdcf8 ffffffff810e1569 ffff88183683ac48 ffff88183683aca8
> ffff8817c39c79c0 ffff88183683ac48 ffff8817c24cdc78 ffff8817c1df8080
> Call Trace:
> [<ffffffff810e1569>] link_path_walk+0x2a9/0x8a0
> [<ffffffff810e24bf>] path_lookupat+0x36f/0x6f0
> [<ffffffff810e286b>] do_path_lookup+0x2b/0x70
> [<ffffffff810e4154>] user_path_at_empty+0x54/0xa0
> [<ffffffff810d9874>] ? cp_new_stat+0xf4/0x110
> [<ffffffff810e41ac>] user_path_at+0xc/0x10
> [<ffffffff810d9a15>] vfs_fstatat+0x35/0x60
> [<ffffffff810d9a76>] vfs_stat+0x16/0x20
> [<ffffffff810d9b85>] sys_newstat+0x15/0x30
> [<ffffffff814e42a2>] system_call_fastpath+0x16/0x1b
> Code: 00 48 8d 90 20 01 00 00 48 89 93 a0 00 00 00 4c 89 a0 20 01 00
> 00 48 8b 83 80 00 00 00 83 80 30 01 00 00 01 e8 24 89 3f 00 eb 8b <0f>
> 0b 55 48 89 e5 41 57 41 56 4c 8d 7f 78 49 89 fe 41 55 4c 8d
> RIP [<ffffffff810eaf8e>] dput+0x1be/0x1c0
> RSP <ffff8817c24cdc18>
> ---[ end trace 835aa73d3e65f5b3 ]---
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: oops in fs/dcache.c:536 with 3.4.107
2015-05-22 0:39 ` Daniel Wittmer
@ 2015-05-26 19:19 ` Daniel Wittmer
0 siblings, 0 replies; 3+ messages in thread
From: Daniel Wittmer @ 2015-05-26 19:19 UTC (permalink / raw)
To: linux-kernel, viro, linux-fsdevel; +Cc: Alan Thompson
<adding linux-fsdevel>
On Thu, May 21, 2015 at 5:39 PM, Daniel Wittmer <wittmer@google.com> wrote:
> <adding Al>
>
> Hi Al,
>
> I was wondering if the above oops (fs/dcache.c:536 in v7.4.107) was
> what you were seeing for the "RCU pathwalk breakage when running into
> a symlink overmounting something" issue
> (https://lkml.org/lkml/2015/5/2/488) you recently fixed, or if this is
> a diferent issue?
>
> Thanks in advance,
> Dan
>
> On Wed, May 20, 2015 at 5:03 PM, Daniel Wittmer <wittmer@google.com> wrote:
>> Hi all,
>>
>> We've recently started to encounter the below oops in fs/dcache.c:536
>> on a few machines running 3.4.107. Looking into changes to dcache.h/c
>> and fs/namei.c I'm not seeing any changes that may have caused or
>> addressed this issue.
>>
>> Is this a known oops? Is there a fix in later versions that I may have missed?
>>
>> Thanks in advance,
>> Dan
>>
>> ------------[ cut here ]------------
>> kernel BUG at fs/dcache.c:536!
>> invalid opcode: 0000 [#1] SMP
>> CPU 1
>> Modules linked in:
>>
>> Pid: 22588, comm: <snip> Not tainted 3.4.107<snip>
>> RIP: 0010:[<ffffffff810eaf8e>] [<ffffffff810eaf8e>] dput+0x1be/0x1c0
>> RSP: 0018:ffff8817c24cdc18 EFLAGS: 00010246
>> RAX: 0000000000000000 RBX: ffff88183683ac48 RCX: 0000000000006564
>> RDX: 0000000000006464 RSI: 0000000000000011 RDI: ffff88183683aca8
>> RBP: ffff8817c24cdc38 R08: 0000000000000000 R09: ffff88183682df08
>> R10: ffff88183682ded0 R11: 0000000000000009 R12: ffff88177229c3f5
>> R13: ffff8818368e7d20 R14: ffff88183683aca8 R15: 0000000000000003
>> FS: 00007feaade39700(0000) GS:ffff88183f220000(0000) knlGS:0000000000000000
>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> CR2: 00007feabdec6000 CR3: 000000170ed8f000 CR4: 00000000000407e0
>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
>> Process longplanner_wor (pid: 22588, threadinfo ffff8817c24cc000, task
>> ffff8817c1df8080)
>> Stack:
>> ffff8817c24cddc8 ffff88177229c3f5 ffff8818368e7d20 ffff8817c1df8080
>> ffff8817c24cdcf8 ffffffff810e1569 ffff88183683ac48 ffff88183683aca8
>> ffff8817c39c79c0 ffff88183683ac48 ffff8817c24cdc78 ffff8817c1df8080
>> Call Trace:
>> [<ffffffff810e1569>] link_path_walk+0x2a9/0x8a0
>> [<ffffffff810e24bf>] path_lookupat+0x36f/0x6f0
>> [<ffffffff810e286b>] do_path_lookup+0x2b/0x70
>> [<ffffffff810e4154>] user_path_at_empty+0x54/0xa0
>> [<ffffffff810d9874>] ? cp_new_stat+0xf4/0x110
>> [<ffffffff810e41ac>] user_path_at+0xc/0x10
>> [<ffffffff810d9a15>] vfs_fstatat+0x35/0x60
>> [<ffffffff810d9a76>] vfs_stat+0x16/0x20
>> [<ffffffff810d9b85>] sys_newstat+0x15/0x30
>> [<ffffffff814e42a2>] system_call_fastpath+0x16/0x1b
>> Code: 00 48 8d 90 20 01 00 00 48 89 93 a0 00 00 00 4c 89 a0 20 01 00
>> 00 48 8b 83 80 00 00 00 83 80 30 01 00 00 01 e8 24 89 3f 00 eb 8b <0f>
>> 0b 55 48 89 e5 41 57 41 56 4c 8d 7f 78 49 89 fe 41 55 4c 8d
>> RIP [<ffffffff810eaf8e>] dput+0x1be/0x1c0
>> RSP <ffff8817c24cdc18>
>> ---[ end trace 835aa73d3e65f5b3 ]---
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-05-26 19:19 UTC | newest]
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