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

[Aleksey Cheusov]

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.

[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 ]---