"Vonlanthen, Elmar":
> Output of SysRq + t:
:::
> 2012-01-20 08:25:13 chgut12fw02 kernel: mount D d5e29e14 0
> 24477 24473 0x00000001
Thanx for SysRq T and D.
This output shows the mount process is in "dead" state, and its call
trace looks very strange since au_hn_free() calls au_hn_alloc()
(directly or indirectly). Obviously it is wrong and there is no such
code in aufs. The possible reasons are
- the call trace is bogus and unreliable.
- the aufs code is compiled incorrectly.
- there already happened another critical error somewhere else, and it
corrupted memory.
- you got broken aufs code.
- etc...
> 2012-01-20 08:25:13 chgut12fw02 kernel: d5e29e24 00000082 00000002
> d5e29e14 d5e29db4 c1028fb3 1da32000 00000000
> 2012-01-20 08:25:13 chgut12fw02 kernel: 00f81831 de287f90 def04e80
> 00000000 de88d7d0 c14d2e80 c14ce000 c14d2e80
> 2012-01-20 08:25:13 chgut12fw02 kernel: de88d7d0 de287f90 c1456280
> d5e29df4 c1021800 00000000 00000001 00000003
> 2012-01-20 08:25:13 chgut12fw02 kernel: Call Trace:
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c1028fb3>] ?
> try_to_wake_up+0x173/0x1f0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c1021800>] ?
> __wake_up_common+0x40/0x70
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10ada1f>] ? iput+0x2f/0x1a0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c13477a0>] schedule+0x30/0x50
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<dff9fded>]
> au_hn_alloc+0x24d/0x370 [aufs]
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c1044c50>] ?
> wake_up_bit+0x60/0x60
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<dff9fb7c>]
> au_hn_free+0x1c/0x40 [aufs]
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<dff976fb>] au_hiput+0xb/0x20
> [aufs]
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<dff9783b>]
> au_iinfo_fin+0x12b/0x1a0 [aufs]
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<dff853ab>]
> au_si_free+0xabb/0xc00 [aufs]
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10ad87c>]
> destroy_inode+0x2c/0x50
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10ad973>] evict+0xd3/0x150
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10adaad>] iput+0xbd/0x1a0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10abb0f>] d_kill+0x9f/0xf0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10abd06>]
> shrink_dentry_list+0x1a6/0x1b0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10ac12e>]
> shrink_dcache_sb+0x5e/0x90
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c109a485>]
> do_remount_sb+0x35/0x110
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10b2fc0>]
> do_mount+0x500/0x6e0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c101b5d0>] ?
> mm_fault_error+0x130/0x130
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10b1a28>] ?
> copy_mount_options+0x98/0x110
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c10b3206>] sys_mount+0x66/0xa0
> 2012-01-20 08:25:13 chgut12fw02 kernel: [<c13490a5>]
> syscall_call+0x7/0xb
------------------------------------------------------------------------------
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