Re: multipathd: BUG: unable to handle kernel NULL pointer dereference

[Stefan Maier <maier@idowa.de>]

Replying to myself:

Switching to a custom build 2.6.39.4 seems to have fixed the issue.



On 1/22/13 11:19 AM, Stefan Maier wrote:
> Hi,
>
> I've got SuSE 11.4 running multipath tools compiled from git.
> It looks like I've got the same problem as described here: http://www.spinics.net/lists/dm-devel/msg17038.html
>
> What is the status on this issue?
>
>
>
> Jan 22 10:59:20 kemper kernel: [  738.009813] device-mapper: multipath: adding disabled device 65:160
> Jan 22 10:59:20 kemper kernel: [  738.010368] BUG: unable to handle kernel NULL pointer dereference at           (null)
> Jan 22 10:59:20 kemper kernel: [  738.010379] IP: [<ffffffffa01f78a3>] dm_set_device_limits+0x23/0x140 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010392] PGD 84a9c9067 PUD 84afd8067 PMD 0
> Jan 22 10:59:20 kemper kernel: [  738.010396] Oops: 0000 [#1] SMP
> Jan 22 10:59:20 kemper kernel: [  738.010400] last sysfs file: /sys/module/scsi_dh_emc/initstate
> Jan 22 10:59:20 kemper kernel: [  738.010404] CPU 6
> Jan 22 10:59:20 kemper kernel: [  738.010405] Modules linked in: raid1 dm_service_time dm_round_robin scsi_dh_emc dm_multipath scsi_dh edd microcode cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq mperf ext4 jbd2 crc16 dm_mod qla2xxx scsi_transport_fc scsi_tgt igb ghes pcspkr hed joydev sg i2c_i801 iTCO_wdt iTCO_vendor_support dca button container usbhid xfs exportfs ehci_hcd usbcore fan processor 3w_sas thermal thermal_sys
> Jan 22 10:59:20 kemper kernel: [  738.010438]
> Jan 22 10:59:20 kemper kernel: [  738.010442] Pid: 3008, comm: multipathd Not tainted 2.6.37.6-24-default #1 Thomas-Krenn.AG X9DR3-F/X9DR3-F
> Jan 22 10:59:20 kemper kernel: [  738.010449] RIP: 0010:[<ffffffffa01f78a3>]  [<ffffffffa01f78a3>] dm_set_device_limits+0x23/0x140 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010457] RSP: 0018:ffff880857bb9c78  EFLAGS: 00010296
> Jan 22 10:59:20 kemper kernel: [  738.010460] RAX: ffff8810447db9f8 RBX: ffff8810493ba140 RCX: 0000000000200000
> Jan 22 10:59:20 kemper kernel: [  738.010464] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900207f1040
> Jan 22 10:59:20 kemper kernel: [  738.010468] RBP: ffffc900207f1040 R08: ffff880857bb9d58 R09: 0000000000000200
> Jan 22 10:59:20 kemper kernel: [  738.010472] R10: 0000160000000000 R11: 0000000000000001 R12: ffff8810447db9f8
> Jan 22 10:59:20 kemper kernel: [  738.010476] R13: 0000000000000000 R14: ffff880857bb9d58 R15: ffff8810447db9c0
> Jan 22 10:59:20 kemper kernel: [  738.010480] FS:  00007fb404e55700(0000) GS:ffff88107fc00000(0000) knlGS:0000000000000000
> Jan 22 10:59:20 kemper kernel: [  738.010484] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> Jan 22 10:59:20 kemper kernel: [  738.010488] CR2: 0000000000000000 CR3: 000000084c1c3000 CR4: 00000000000406e0
> Jan 22 10:59:20 kemper kernel: [  738.010491] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> Jan 22 10:59:20 kemper kernel: [  738.010495] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Jan 22 10:59:20 kemper kernel: [  738.010500] Process multipathd (pid: 3008, threadinfo ffff880857bb8000, task ffff880857bb62c0)
> Jan 22 10:59:20 kemper kernel: [  738.010503] Stack:
> Jan 22 10:59:20 kemper kernel: [  738.010506]  00000000ffffffff ffff88087f85ab80 ffff880857bb9cc8 000000000000000d
> Jan 22 10:59:20 kemper kernel: [  738.010513]  ffff88087f85abe8 0000000000000001 ffff88087f85aba0 ffffffff81071b9f
> Jan 22 10:59:20 kemper kernel: [  738.010519]  ffff880857bb9ce8 ffffffff81041732 ffff8810493ba140 ffffc900207f1040
> Jan 22 10:59:20 kemper kernel: [  738.010525] Call Trace:
> Jan 22 10:59:20 kemper kernel: [  738.010548]  [<ffffffffa01b6425>] multipath_iterate_devices+0x55/0x80 [dm_multipath]
> Jan 22 10:59:20 kemper kernel: [  738.010559]  [<ffffffffa01f866c>] dm_calculate_queue_limits+0x8c/0x130 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010576]  [<ffffffffa01f657b>] dm_swap_table+0x6b/0x90 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010589]  [<ffffffffa01fae88>] do_resume+0x88/0x1b0 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010609]  [<ffffffffa01fbcac>] ctl_ioctl+0x1ac/0x250 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010629]  [<ffffffffa01fbd5e>] dm_ctl_ioctl+0xe/0x20 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010651]  [<ffffffff81159197>] do_vfs_ioctl+0x77/0x2f0
> Jan 22 10:59:20 kemper kernel: [  738.010660]  [<ffffffff81159490>] sys_ioctl+0x80/0xa0
> Jan 22 10:59:20 kemper kernel: [  738.010670]  [<ffffffff8100304b>] tracesys+0xd9/0xde
> Jan 22 10:59:20 kemper kernel: [  738.010677]  [<00007fb403926d87>] 0x7fb403926d87
> Jan 22 10:59:20 kemper kernel: [  738.010680] Code: fd ff ff 0f 1f 44 00 00 48 83 ec 78 48 89 6c 24 58 4c 89 64 24 60 48 89 fd 4c 89 6c 24 68 48 89 5c 24 50 49 89 d5 4c 89 74 24 70 <4c> 8b 36 4d 89 c4 49 8b 86 98 00 00 00 48 8b 98 08 03 00 00 48
> Jan 22 10:59:20 kemper kernel: [  738.010708] RIP  [<ffffffffa01f78a3>] dm_set_device_limits+0x23/0x140 [dm_mod]
> Jan 22 10:59:20 kemper kernel: [  738.010714]  RSP <ffff880857bb9c78>
> Jan 22 10:59:20 kemper kernel: [  738.010717] CR2: 0000000000000000
> Jan 22 10:59:20 kemper kernel: [  738.119186] ---[ end trace 61248b01dfe0b885 ]---
>
>
>


-- 
Mit freundlichen Grüßen

Stefan Maier

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