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Message-ID: <46D888FC.6000405@linux.vnet.ibm.com> Date: Fri, 31 Aug 2007 14:32:44 -0700 From: Avantika Mathur <mathur@...ux.vnet.ibm.com> To: Girish Shilamkar <girish@...sterfs.com> CC: linux-ext4@...r.kernel.org Subject: Re: jbd2_journal_commit_transaction oops Girish Shilamkar wrote: > Hi Avantika, > From initial code review I think oops in crc32_be is caused as > bh->b_data passed to the function is NULL. Most probably something might > have gone wrong in jbd2_journal_write_metadata_buffer() making bh->data > = 0. > Does the error go away, when run without journal_checksum patch/option ? > > > I tried running fsstress without the journal_checksum option set and didn't see any errors. But I got the oops again when I mounted with journal_checksum. thank you for looking into this. Avantika > On Thu, 2007-08-30 at 11:16 -0700, Avantika Mathur wrote: > >> Hi Girish, >> >> When running fsstress on an x86 machine, I hit the kernel oops below. The ext4-patch-queue is being tested including the journal checksum patches >> I have mounted with -o delalloc,mballoc,data=writeback,journal_checksum >> >> I did not get a chance to look in detail; but it looks like a journal issue. Do you know what the issue might be? >> >> >> BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 >> printing eip: >> c118ba5d >> *pdpt = 000000002560a001 >> *pde = 0000000000000000 >> Oops: 0000 [#1] >> SMP >> Modules linked in: >> CPU: 1 >> EIP: 0060:[<c118ba5d>] Not tainted VLI >> EFLAGS: 00010257 (2.6.23-rc4-autokern1 #1) >> EIP is at crc32_be+0x3d/0x9c >> eax: 7e78a276 ebx: 76a2787e ecx: 00000400 edx: 00000000 >> esi: 00000000 edi: 00000000 ebp: f56e5200 esp: e61f9e90 >> ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 >> Process kjournald2 (pid: 5388, ti=e61f8000 task=e3efc000 task.ti=e61f8000) >> Stack: ef5fffc0 00000016 c10c762d 0000055e 00000000 00000000 00001000 00000000 >> f50e3e80 7e78a276 00000008 00000000 00000544 eb46aab4 eb46aabc 00000155 >> f585f800 e1e1c968 00000000 eb059428 0000055e 00000000 00000000 e3efc000 >> Call Trace: >> [<c10c762d>] jbd2_journal_commit_transaction+0x92a/0x128d >> [<c1029e51>] autoremove_wake_function+0x0/0x33 >> [<c1029e51>] autoremove_wake_function+0x0/0x33 >> [<c10214f4>] try_to_del_timer_sync+0x42/0x48 >> [<c10ca4fd>] kjournald2+0x130/0x307 >> [<c1029e51>] autoremove_wake_function+0x0/0x33 >> [<c129171c>] __sched_text_start+0x364/0x3ff >> [<c1029e51>] autoremove_wake_function+0x0/0x33 >> [<c10ca3cd>] kjournald2+0x0/0x307 >> [<c1029a27>] kthread+0x34/0x55 >> [<c10299f3>] kthread+0x0/0x55 >> [<c1003173>] kernel_thread_helper+0x7/0x10 >> ======================= >> Code: 42 30 d8 0f b6 c0 c1 eb 08 33 1c 85 e0 ae 2a c1 49 74 05 f6 c2 03 75 e5 83 f9 03 76 4c 89 ce 83 ea 04 83 e6 03 c1 e9 02 83 c2 04 <33> 1a 0f b6 c3 c1 eb 08 33 1c 85 e0 ae 2a c1 0f b6 c3 c1 eb 08 >> EIP: [<c118ba5d>] crc32_be+0x3d/0x9c SS:ESP 0068:e61f9e90 >> -- 0:conmux-control -- time-stamp -- Aug/30/07 0:36:46 -- >> -- 0:conmux-control -- time-stamp -- Aug/30/07 5:56:32 -- >> (bot:conmon-payload) disconnected >> >> >> thanks, >> Avantika >> > > - > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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