[Devel] 2.6.32-042stab068.8 kernel_panic (delayfs_resume_fn)

[Kinsbursky Stanislav]

05.02.2013 19:38, Aleksey Cheusov пишет:
> On Tue, Feb 5, 2013 at 2:57 PM, Kir Kolyshkin <kir at openvz.org> wrote:
>> On 02/05/2013 03:20 AM, Aleksey Cheusov wrote:
>>> http://mova.org/~cheusov/pub/screenshots/kernel_panic6__syn-proc7.jpg
>>> http://mova.org/~cheusov/pub/screenshots/kernel_panic7__syn-proc7.jpg
>>>
>> Try using the latest stable kernel (i.e. 042stab072.10).
>> If issue remains, please file a bug to bugzilla.openvz.org
>
> Before doing so, I tried to test memory with a help of memtest86+.
> I did so, and memtest could not find any problem.
> Since then... I cannot reproduce the problem anymore
> neither with 072.10 nor with 068.8 :-/. I tried it many times.
> The system boots normally, vzctl stop|start|restart doesn't lead to panics.
> So, my system have been working for an hour or so.
>
> However, I see a lot of kernel messages like the following.
> It seems this is well known problem
> (redhat bugs #739467, #678486, #558190)
> but in my case stack traces are different and contain nfs related functions.
> I see these messages on 3 of 8 of my servers.
> If it is a bug, I'll report them to bugzilla with more details.
>

Sad, but no, these bugs have nothing with the log you provided below.
This is our bug.
Yes, please, report the them to the OpenZV Bugzilla.
The most interesting part here is HOW and WHAT is triggering the following warning.
I.e. what's your configuration, what do you do to get this warning and in what
kernel version has this flaw appeared.

Thanks.

BTW, this warning will, most probably, lead to kernel panic sooner or later.

> [2685651.210718] ------------[ cut here ]------------
> [2685651.210729] WARNING: at lib/list_debug.c:26
> __list_add+0x6d/0xa0() (Tainted: G        W  ---------------   )
> [2685651.210733] Hardware name: G41M-Combo
> [2685651.210735] list_add corruption. next->prev should be prev
> (ffff88012cd7b438), but was 0000269c00002696. (next=ffff88002691e5a8).
> [2685651.210739] Modules linked in: vzethdev pio_nfs pio_direct
> pfmt_raw pfmt_ploop1 ploop simfs vzrst nf_nat nf_conntrack_ipv4
> nf_defrag_ipv4 vzcpt nfs fscache vzdquota ip6table_mangle xt_length
> xt_hl xt_tcpmss xt_TCPMSS iptable_mangle iptable_filter xt_multiport
> xt_limit xt_dscp ipt_REJECT ip_tables vzevent nfsd lockd nfs_acl
> auth_rpcgss sunrpc vznetdev vzmon vzdev ip6t_REJECT nf_conntrack_ipv6
> nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6
> dm_mod r8169 mii i2c_i801 sg iTCO_wdt iTCO_vendor_support atl1c ext4
> mbcache jbd2 sd_mod crc_t10dif pata_acpi ata_generic ata_piix i915
> drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded:
> scsi_wait_scan]
> [2685651.210792] Pid: 736662, comm: synb_nwre veid: 106 Tainted: G
>     W  ---------------    2.6.32-042stab068.8 #1
> [2685651.210796] Call Trace:
> [2685651.210802]  [<ffffffff8106e167>] ? warn_slowpath_common+0x87/0xc0
> [2685651.210806]  [<ffffffff8106e256>] ? warn_slowpath_fmt+0x46/0x50
> [2685651.210810]  [<ffffffff8128a86d>] ? __list_add+0x6d/0xa0
> [2685651.210828]  [<ffffffffa044248c>] ? nfs_dq_prealloc_space+0x23c/0x2f0 [nfs]
> [2685651.210838]  [<ffffffffa042d39a>] ? nfs_file_write+0xba/0x210 [nfs]
> [2685651.210843]  [<ffffffff8119c37a>] ? do_sync_write+0xfa/0x140
> [2685651.210848]  [<ffffffff81097b90>] ? autoremove_wake_function+0x0/0x40
> [2685651.210851]  [<ffffffff8119c658>] ? vfs_write+0xb8/0x1a0
> [2685651.210856]  [<ffffffff810e891a>] ? audit_syscall_entry+0x26a/0x290
> [2685651.210859]  [<ffffffff8119d071>] ? sys_write+0x51/0x90
> [2685651.210864]  [<ffffffff8104aab0>] ? sysenter_dispatch+0x7/0x2e
> [2685651.210867] ---[ end trace 8434d08d9f6c4415 ]---
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-- 
Best regards,
Stanislav Kinsbursky