[Cluster-devel] kernel BUG at fs/dlm/ast.c:41!

[Fabio Massimo Di Nitto]

I guys,

i was able to trigger this with .19-rc6 on a 2node cluster sharing one ip.
Cluster was formed and quored, rebooted the node owning the service to verify
the failover and this lovely message hitted me on the passive node.

[  160.726237] ------------[ cut here ]------------
[  160.726293] kernel BUG at fs/dlm/ast.c:41!
[  160.726349] invalid opcode: 0000 [#1]
[  160.726404] SMP
[  160.726537] Modules linked in: nfs nfsd exportfs lockd sunrpc video sbs
i2c_ec i2c_core button battery container ac asus_acpi sctp ipv6 lock_dlm gfs2
dlm configfs nls_utf8 ntfs dm_mod lp af_packet snd_intel8x0 snd_ac97_codec
snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss tsdev
snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd
soundcore snd_page_alloc serio_raw parport_pc parport intel_agp agpgart shpchp
pci_hotplug psmouse floppy iTCO_wdt pcspkr evdev ext3 jbd mbcache ide_cd cdrom
ide_disk ata_generic libata piix generic lpfc scsi_transport_fc scsi_mod 3c59x
mii tg3 ehci_hcd uhci_hcd usbcore raid10 raid456 xor raid1 raid0 multipath
linear md_mod thermal processor fan fbcon tileblit font bitblit softcursor
vesafb capability commoncap
[  160.730558] CPU:    0
[  160.730559] EIP:    0060:[<e0c3f148>]    Not tainted VLI
[  160.730560] EFLAGS: 00010286   (2.6.19-6-server #2)
[  160.730737] EIP is at dlm_add_ast+0xd8/0xf0 [dlm]
[  160.730795] eax: 00000013   ebx: dc5a276c   ecx: 00000046   edx: 00000000
[  160.730855] esi: 00000001   edi: fffefffe   ebp: de06fda0   esp: dc697f10
[  160.730915] ds: 007b   es: 007b   ss: 0068
[  160.730971] Process dlm_recoverd (pid: 4013, ti=dc696000 task=dfa1d030
task.ti=dc696000)
[  160.731032] Stack: e0c4edb1 00000029 e0c4eda4 e0c4d43c ffffc299 dbd45380
dc5a276c e0c42fa6
[  160.731464]        dc5a276c e0c41809 de06fc40 dbd45388 de06feec dc5a276c
de06fc40 de06fc00
[  160.731897]        e0c453e6 e0c4dab8 de06feec 0001027f 00000003 00000001
de06fc88 de06fc78
[  160.732329] Call Trace:
[  160.732450]  [<e0c42fa6>] _receive_unlock_reply+0x96/0xa0 [dlm]
[  160.732566]  [<e0c453e6>] dlm_recover_waiters_pre+0x236/0x250 [dlm]
[  160.732683]  [<e0c4bbbe>] dlm_recoverd+0x1ee/0x420 [dlm]
[  160.732804]  [<c0137f16>] kthread+0xf6/0x100
[  160.732911]  [<c0103d2f>] kernel_thread_helper+0x7/0x18
[  160.733015]  =======================
[  160.733073] Code: c7 44 24 04 29 00 00 00 89 44 24 10 c7 04 24 64 d4 c4 e0 e8
7b 51 4e df 89 d8 e8 e4 24 00 00 c7 04 24 b1 ed c4 e0 e8 68 51 4e df <0f> 0b 29
00 a4 ed c4 e0 c7 04 24 c0 d4 c4 e0 e8 84 44 4e df 8d
[  160.735767] EIP: [<e0c3f148>] dlm_add_ast+0xd8/0xf0 [dlm] SS:ESP 0068:dc697f10


-- 
I'm going to make him an offer he can't refuse.