[Ocfs2-users] Bug in OCFS2 1.3.3

[Sunil Mushran]

Please can you file a bugzilla and attach this stack trace.
Also attach the output of the following:

$ objdump -DSl /lib/modules/`uname -r`/kernel/fs/ocfs2/ocfs2.ko 
 >/tmp/ocfs2.out

Paulo Rodrigues wrote:
> Got the same error again today.
>
> BUG: unable to handle kernel NULL pointer dereference at virtual 
> address 000002d8
> printing eip: f8d8f442 *pde = cecd2067
> Oops: 0002 [#1] SMP
> Modules linked in: ocfs2 ocfs2_dlmfs ocfs2_dlm ocfs2_nodemanager 
> configfs fuse ipv6 sr_mod cdrom ata_generic pata_acpi bnx2 ata_piix 
> pcspkr iTCO_wdt libata button serio_raw iTCO_vendor_support i5000_edac 
> edac_core dcdbas sg dm_round_robin dm_emc dm_multipath dm_snapshot 
> dm_zero dm_mirror dm_mod lpfc scsi_transport_fc scsi_tgt megaraid_sas 
> sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd
>
> Pid: 30807, comm: pop3 Not tainted (2.6.24.7-92.fc8 #1)
> EIP: 0060:[<f8d8f442>] EFLAGS: 00210246 CPU: 4
> EIP is at ocfs2_free_suballoc_bits+0x41a/0x6d9 [ocfs2]
> EAX: cbe6ca00 EBX: 00000000 ECX: 00000000 EDX: 000014c2
> ESI: 0000000b EDI: 00000000 EBP: c8afd000 ESP: dbb1bcec
>  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> Process pop3 (pid: 30807, ti=dbb1b000 task=c3472d20 task.ti=dbb1b000)
> Stack: 00000002 dbb1bd2c 00000001 cbe6cd78 f76bb5e8 f10195e8 f884e798 
> d7709070
>        cbe6cd78 f76bb5e8 c668f000 c668f0c0 f19ee380 cbe6ca00 00000000 
> 00000000
>        f19ee380 000014c2 00000000 e72a0000 0810cec2 f8d92da9 000014c2 
> 0810ba00
> Call Trace:
>  [<f884e798>] do_get_write_access+0x329/0x362 [jbd]
>  [<f8d92da9>] ocfs2_free_clusters+0x171/0x212 [ocfs2]
>  [<f8d5ed5c>] __ocfs2_flush_truncate_log+0x596/0x702 [ocfs2]
>  [<f884e463>] journal_stop+0x15d/0x169 [jbd]
>  [<f8d683e9>] ocfs2_commit_truncate+0x30f/0x1240 [ocfs2]
>  [<f8d6e3c0>] ocfs2_read_blocks+0x45c/0x46d [ocfs2]
>  [<f8d8027f>] ocfs2_wipe_inode+0x4f3/0xcc2 [ocfs2]
>  [<f8d828e5>] ocfs2_delete_inode+0x409/0x624 [ocfs2]
>  [<c062b62b>] mutex_lock+0x1a/0x29
>  [<c04ac011>] inotify_inode_is_dead+0x18/0x6c
>  [<f8d824dc>] ocfs2_delete_inode+0x0/0x624 [ocfs2]
>  [<c04994a7>] generic_delete_inode+0x91/0xf7
>  [<c0498d95>] iput+0x60/0x62
>  [<c04919aa>] do_unlinkat+0xae/0x119
>  [<c04895f3>] vfs_read+0x111/0x14b
>  [<c0489ac1>] sys_pread64+0x48/0x5f
>  [<c04051da>] syscall_call+0x7/0xb
>  =======================
> Code: 9c 00 00 00 8b 80 6c 01 00 00 8b b8 c4 00 00 00 8b b0 c0 00 00 
> 00 8b 44 24 34 8b 58 04 8b 08 39 df 75 0e 39 ce 75 0a 8b 4c 24 38 <0f> 
> ab 51 40 19 c0 4a ff 4c 24 3c 83 7c 24 3c ff 75 b7 8b 5c 24
> EIP: [<f8d8f442>] ocfs2_free_suballoc_bits+0x41a/0x6d9 [ocfs2] SS:ESP 
> 0068:dbb1bcec
> ---[ end trace 4bb65900c779e50c ]---
>
> Am I missing something?
>
> Thanks!