[DRBD-user] Kernel Panic occuring when drbd is up & (re)syncing

Alexandre Biancalana biancalana at gmail.com
Mon Dec 14 23:20:21 CET 2009


Hi list,

  Any news about this bug ??

2009/11/16 Ivars Strazdiņš <ivars.strazdins at gmail.com>:
> It looks like I am getting kernel bug on 64-bit Xen Debian in similar
> conditions, ie, when running drbd-verify.
> I have got it happening on both cluster nodes.
>
> Kernel 2.6.26-2-xen-amd64, DRBD 8.3.5 compiled from Debian unstable package
> for 8.3.4
>
> For anyone interested, here is the stack trace.
> BR,
> Ivars
>
>
> Nov 16 03:00:29 ariel kernel: [31375.026193] BUG: unable to handle kernel
> NULL pointer dereference at 0000000000000016
> Nov 16 03:00:29 ariel kernel: [31375.026288] IP: [<ffffffffa02f9169>]
> :drbd:drbd_connector_callback+0x32/0x181
> Nov 16 03:00:29 ariel kernel: [31375.026359] PGD 164c4067 PUD 170d1067 PMD 0
> Nov 16 03:00:29 ariel kernel: [31375.026423] Oops: 0000 [1] SMP
> Nov 16 03:00:29 ariel kernel: [31375.026474] CPU 0
> Nov 16 03:00:29 ariel kernel: [31375.026512] Modules linked in: xt_physdev
> iptable_filter ip_tables x_tables sha1_generic dr
> bd cn iscsi_trgt crc32c libcrc32c ipv6 bridge xfs w83627ehf lm85 hwmon_vid
> netconsole configfs xenblktap netloop softdog ipm
> i_watchdog ipmi_msghandler loop psmouse serio_raw pcspkr i2c_i801 i2c_core
> button rng_core shpchp pci_hotplug intel_agp evde
> v ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod ide_cd_mod cdrom
> ide_disk ide_pci_generic ata_piix piix ide_core ata_
> generic libata scsi_mod dock skge ehci_hcd uhci_hcd thermal processor fan
> thermal_sys [last unloaded: scsi_wait_scan]
> Nov 16 03:00:29 ariel kernel: [31375.027370] Pid: 3165, comm: cqueue Not
> tainted 2.6.26-2-xen-amd64 #1
> Nov 16 03:00:29 ariel kernel: [31375.027405] RIP: e030:[<ffffffffa02f9169>]
>  [<ffffffffa02f9169>] :drbd:drbd_connector_callb
> ack+0x32/0x181
> Nov 16 03:00:29 ariel kernel: [31375.027485] RSP: e02b:ffff8800104f3e50
>  EFLAGS: 00010206
> Nov 16 03:00:29 ariel kernel: [31375.027519] RAX: 0000000000000000 RBX:
> ffff88001648c220 RCX: 0000000000000000
> Nov 16 03:00:29 ariel kernel: [31375.027555] RDX: 0000000000000000 RSI:
> 0000000000000000 RDI: ffff8800164c9c10
> Nov 16 03:00:29 ariel kernel: [31375.027597] RBP: ffff88001648c1d8 R08:
> ffff8800104f2000 R09: ffffffff80553e18
> Nov 16 03:00:29 ariel kernel: [31375.027633] R10: 0000000000000000 R11:
> 7fffffffffffffff R12: ffff8800164c9c10
> Nov 16 03:00:29 ariel kernel: [31375.027669] R13: ffffffffa02d30c3 R14:
> ffffffff8057d1c0 R15: 0000000000000000
> Nov 16 03:00:29 ariel kernel: [31375.027709] FS:  00007f9ee13c46e0(0000)
> GS:ffffffff8053a000(0000) knlGS:0000000000000000
> Nov 16 03:00:29 ariel kernel: [31375.027761] CS:  e033 DS: 0000 ES: 0000
> Nov 16 03:00:29 ariel kernel: [31375.027793] DR0: 0000000000000000 DR1:
> 0000000000000000 DR2: 0000000000000000
> Nov 16 03:00:29 ariel kernel: [31375.027829] DR3: 0000000000000000 DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Nov 16 03:00:29 ariel kernel: [31375.027866] Process cqueue (pid: 3165,
> threadinfo ffff8800104f2000, task ffff8800161e1440)
> Nov 16 03:00:29 ariel kernel: [31375.027918] Stack:  0000000000000000
> ffff88001648c220 ffff88001648c1d8 ffff88001648c1d0
> Nov 16 03:00:29 ariel kernel: [31375.028024]  ffffffffa02d30c3
> ffffffff8057d1c0 0000000000000000 ffffffffa02d30d8
> Nov 16 03:00:29 ariel kernel: [31375.028120]  7fffffffffffffff
> ffff880016f76840 ffff88001648c1d0 ffffffff8023c34c
> Nov 16 03:00:29 ariel kernel: [31375.028185] Call Trace:
> Nov 16 03:00:29 ariel kernel: [31375.028250]  [<ffffffffa02d30c3>] ?
> :cn:cn_queue_wrapper+0x0/0x33
> Nov 16 03:00:29 ariel kernel: [31375.028393]  [<ffffffffa02d30d8>] ?
> :cn:cn_queue_wrapper+0x15/0x33
> Nov 16 03:00:29 ariel kernel: [31375.028439]  [<ffffffff8023c34c>] ?
> run_workqueue+0xbe/0x189
> Nov 16 03:00:29 ariel kernel: [31375.028482]  [<ffffffff8023cd35>] ?
> worker_thread+0xd5/0xe0
> Nov 16 03:00:29 ariel kernel: [31375.028522]  [<ffffffff8023f6c1>] ?
> autoremove_wake_function+0x0/0x2e
> Nov 16 03:00:29 ariel kernel: [31375.028564]  [<ffffffff8023cc60>] ?
> worker_thread+0x0/0xe0
> Nov 16 03:00:29 ariel kernel: [31375.028601]  [<ffffffff8023f593>] ?
> kthread+0x47/0x74
> Nov 16 03:00:29 ariel kernel: [31375.028637]  [<ffffffff802283a8>] ?
> schedule_tail+0x27/0x5c
> Nov 16 03:00:29 ariel kernel: [31375.028677]  [<ffffffff8020be28>] ?
> child_rip+0xa/0x12
> Nov 16 03:00:29 ariel kernel: [31375.028722]  [<ffffffff8023f54c>] ?
> kthread+0x0/0x74
> Nov 16 03:00:29 ariel kernel: [31375.028760]  [<ffffffff8020be1e>] ?
> child_rip+0x0/0x12
> Nov 16 03:00:29 ariel kernel: [31375.028796]
> Nov 16 03:00:29 ariel kernel: [31375.028824]
> Nov 16 03:00:29 ariel kernel: [31375.028852] Code: 41 55 41 54 49 89 fc 55
> 53 48 83 ec 08 65 8b 04 25 24 00 00 00 83 3d a6 75 01 00 02 74 1e 89 c0 48
> c1 e0 07 48 ff 80 00 09 31 a0 <f6> 42 16 20 be 98 00 00 00 0f 84 20 01 00 00
> eb 1a 41 5b 5b 5d
> Nov 16 03:00:29 ariel kernel: [31375.029581] RIP  [<ffffffffa02f9169>]
> :drbd:drbd_connector_callback+0x32/0x181
> Nov 16 03:00:29 ariel kernel: [31375.029657]  RSP <ffff8800104f3e50>
> Nov 16 03:00:29 ariel kernel: [31375.029688] CR2: 0000000000000016
> Nov 16 03:00:29 ariel kernel: [31375.030762] ---[ end trace 296f6157c8798c56
> ]---
>
>
> Jean-Francois Chevrette wrote:
>>
>> It appears that there is currently a problem with the latest CentOS/Redhat
>> kernel. We have noticed the same problem when using LVM snapshots and a
>> backup technology called R1Soft CDP.
>>
>> Some related info:
>> http://bugs.centos.org/view.php?id=3869
>> forum.r1soft.com/showthread.php?t=1158
>>
>> No sign of a bug at bugzilla.redhat.com
>>
>> For now we have reverted to kernel-2.6.18-128.7.1 on which we did not have
>> any issues for the past 4 hours. Previously, a few seconds after starting a
>> 'drbdadm verify' the kernel panic would occur.
>>
>> DRBD devs might want to check it out.
>>
>> Regards,
>
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>


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