+linux-nfs mailing list
On Wed, Sep 23, 2015 at 8:27 AM, Alexander Aring <[email protected]> wrote:
> Hi,
>
> On Wed, Sep 23, 2015 at 01:57:57PM +0200, Alexander Aring wrote:
> ...
>> >
>>
>> Ok, I think I have two issues with two different races the first one was
>> fixed by bde6f9ded1bd ("net: Initialize table in fib result"), but the
>> second one is still there:
>>
>> [ 8.615806] ------------[ cut here ]------------
>> [ 8.620678] Kernel BUG at c016c3d0 [verbose debug info unavailable]
>> [ 8.627229] Internal error: Oops - BUG: 0 [#1] SMP ARM
>> [ 8.632611] Modules linked in:
>> [ 8.635836] CPU: 0 PID: 766 Comm: kworker/0:1H Tainted: G W 4.2.0-11248-gfbd0351 #140
>> [ 8.645208] Hardware name: Generic AM33XX (Flattened Device Tree)
>> [ 8.651616] Workqueue: rpciod xprt_autoclose
>> [ 8.656091] task: ce3c52c0 ti: ce642000 task.ti: ce642000
>> [ 8.661744] PC is at iput+0x1a8/0x1f0
>> [ 8.665579] LR is at xprt_autoclose+0x2c/0x54
>> [ 8.670136] pc : [<c016c3d0>] lr : [<c066c884>] psr: 20000113
>> [ 8.670136] sp : ce643e80 ip : 00000000 fp : c0b56688
>> [ 8.682133] r10: 00000001 r9 : ce643ec8 r8 : 00000000
>> [ 8.687599] r7 : feff3000 r6 : ce615800 r5 : ce615bc0 r4 : ce615b54
>> [ 8.694421] r3 : 00000060 r2 : 0000000f r1 : 0f10e000 r0 : cdbed720
>> [ 8.701254] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
>> [ 8.708718] Control: 10c5387d Table: 80004019 DAC: 00000051
>> [ 8.714732] Process kworker/0:1H (pid: 766, stack limit = 0xce642218)
>> [ 8.721464] Stack: (0xce643e80 to 0xce644000)
>> [ 8.726033] 3e80: c066f828 ce615b54 ce615bc0 ce615800 feff3000 00000000 ce643ec8 c066c884
>> [ 8.734596] 3ea0: ce615b54 ce5ff440 cfb9e340 c0057928 00000001 00000000 c00578b4 cfb9e340
>> [ 8.743152] 3ec0: c0057cc8 00000000 c137972c c0cc1960 00000000 c09979f4 cfb9e340 cfb9e340
>> [ 8.751714] 3ee0: ce5ff458 cfb9e370 ce642000 00000008 c0b55ba0 ce5ff440 cfb9e340 c0057c54
>> [ 8.760274] 3f00: ce659940 ce5ff440 c0057c18 00000000 ce659940 ce5ff440 c0057c18 00000000
>> [ 8.768834] 3f20: 00000000 00000000 00000000 c005d918 c0b5697c 00000000 00000000 ce5ff440
>> [ 8.777390] 3f40: 00000000 00000000 dead4ead ffffffff ffffffff c0b65d60 00000000 00000000
>> [ 8.785951] 3f60: c0922088 ce643f64 ce643f64 00000000 00000000 dead4ead ffffffff ffffffff
>> [ 8.794513] 3f80: c0b65d60 00000000 00000000 c0922088 ce643f90 ce643f90 ce643fac ce659940
>> [ 8.803069] 3fa0: c005d844 00000000 00000000 c000f770 00000000 00000000 00000000 00000000
>> [ 8.811628] 3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> [ 8.820185] 3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 8fdf6861 8fdf6c61
>> [ 8.828741] [<c016c3d0>] (iput) from [<c066c884>] (xprt_autoclose+0x2c/0x54)
>> [ 8.836133] [<c066c884>] (xprt_autoclose) from [<c0057928>] (process_one_work+0x19c/0x48c)
>> [ 8.844784] [<c0057928>] (process_one_work) from [<c0057c54>] (worker_thread+0x3c/0x4a0)
>> [ 8.853256] [<c0057c54>] (worker_thread) from [<c005d918>] (kthread+0xd4/0xf0)
>> [ 8.860827] [<c005d918>] (kthread) from [<c000f770>] (ret_from_fork+0x14/0x24)
>> [ 8.868387] Code: e59f0044 e59f1044 ebfb467a eaffffc1 (e7f001f2)
>
> Additional missing information is that I am booting via nfsroot and
> xprt_autoclose is something from sunrpc.
>
> Finally I figured out that commit
> 4876cc779ff525b9c2376d8076edf47815e71f2c ("SUNRPC: Ensure we release the
> TCP socket once it has been closed") occur this races. After reverting
> this commit everything works fine.
>
> I added now:
>
> Steven Rostedt <[email protected]>
> Trond Myklebust <[email protected]>
>
> to cc to report about this issue.
>
Is that happening when the transport is being torn down? If so, is it
fixed by http://git.linux-nfs.org/?p=trondmy/linux-nfs.git;a=commitdiff;h=79234c3db6842a3de03817211d891e0c2878f756
?
Hi,
On Wed, Sep 23, 2015 at 09:16:00AM -0400, Trond Myklebust wrote:
...
>
> Is that happening when the transport is being torn down? If so, is it
> fixed by http://git.linux-nfs.org/?p=trondmy/linux-nfs.git;a=commitdiff;h=79234c3db6842a3de03817211d891e0c2878f756
> ?
thanks. This patch fixed my issue.
- Alex