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    SubjectRe: BUG: XFS/firefox-bin (2.6.23.8)
    Date
    On Monday, 3 of December 2007, David Chinner wrote:
    > On Sun, Dec 02, 2007 at 09:06:19AM -0800, Avuton Olrich wrote:
    > > Adding xfs to CC
    > >
    > > On Dec 2, 2007 9:02 AM, Avuton Olrich <avuton@gmail.com> wrote:
    > > > Hello,
    > > >
    > > > 2.6.23.8 just crashed here, it had been up 8 days and suspended to
    > > > disk many times in those 8 days. The process that crashed it was
    > > > firefox-3.0b1. It crashed and could not be killed (please excuse me, I
    > > > failed to get ps auxf output).
    > > >
    > > > All of the following information was after reboot, except, of course,
    > > > for the BUG.
    > .....
    >
    > > > [ 3158.936251] BUG: unable to handle kernel NULL pointer dereference
    > > > at virtual address 00000000
    > > > [ 3158.936260] printing eip:
    > > > [ 3158.936261] c013405b
    > > > [ 3158.936262] *pde = 00000000
    > > > [ 3158.936266] Oops: 0002 [#1]
    > > > [ 3158.936276] PREEMPT
    > > > [ 3158.936282] Modules linked in: cdc_acm netconsole snd_pcm_oss snd_mixer_oss
    > > > [ 3158.936297] CPU: 0
    > > > [ 3158.936298] EIP: 0060:[<c013405b>] Not tainted VLI
    > > > [ 3158.936299] EFLAGS: 00210246 (2.6.23.8 #4)
    > > > [ 3158.936312] EIP is at current_kernel_time+0x2b/0x40
    >
    > I don't think this is XFS related - there's something really screwed up
    > if you've crashed in current_kernel_time().
    >
    > We've got suspend/resume involved, so who knows what might have gone
    > wrong.
    >
    > Rafael, any ideas?

    Well, I haven't seen symptoms like these yet.

    I'd try to unset NO_HZ (if set) and HIGH_RES_TIMERS (if set), but it doesn't
    look like a readily reprodicible bug.

    > > > [ 3158.936316] eax: 00000000 ebx: 24a60770 ecx: 00000000 edx: 0f99c038
    > > > [ 3158.936320] esi: 00402000 edi: 00000007 ebp: 000081a4 esp: ee429ce0
    > > > [ 3158.936323] ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068
    > > > [ 3158.936327] Process firefox-bin (pid: 11154, ti=ee428000
    > > > task=eec00540 task.ti=ee428000)
    > > > [ 3158.936331] Stack: f177ac00 f21128c0 00000007 000081a4 c026495a
    > > > 00008000 efeb4180 00000000
    > > > [ 3158.936348] c023ac60 098c745c 00000000 00000001 00000004
    > > > ee429d30 00000000 f7c129e0
    > > > [ 3158.936366] f21128c0 00000000 098c745c 00000000 f177ac00
    > > > f7c129e0 00000000 ee429e18
    > > > [ 3158.936451] Call Trace:
    > > > [ 3158.936455] [<c026495a>] xfs_ichgtime+0x1a/0xa0
    > > > [ 3158.936465] [<c023ac60>] xfs_ialloc+0x230/0x620
    > > > [ 3158.936473] [<c0252345>] xfs_dir_ialloc+0x85/0x2d0
    > > > [ 3158.936483] [<c024f0b2>] xfs_trans_reserve+0x82/0x200
    > > > [ 3158.936489] [<c02585c6>] xfs_create+0x386/0x690
    > > > [ 3158.936494] [<c01793b0>] dput+0x20/0x150
    > > > [ 3158.936501] [<c013a3a6>] futex_wait+0x266/0x360
    > > > [ 3158.936507] [<c0258240>] xfs_create+0x0/0x690
    > > > [ 3158.936511] [<c026486b>] xfs_vn_mknod+0x15b/0x200
    > > > [ 3158.936516] [<c0264930>] xfs_vn_create+0x0/0x10
    > > > [ 3158.936521] [<c0170483>] vfs_create+0x93/0xd0
    > > > [ 3158.936525] [<c017358e>] open_namei+0x53e/0x650
    > > > [ 3158.936530] [<c0153802>] do_wp_page+0x312/0x4a0
    > > > [ 3158.936537] [<c0166b7e>] do_filp_open+0x2e/0x60
    > > > [ 3158.936542] [<c016681e>] get_unused_fd_flags+0x4e/0xe0
    > > > [ 3158.936546] [<c0166bfc>] do_sys_open+0x4c/0xe0
    > > > [ 3158.936612] [<c0166ccc>] sys_open+0x1c/0x20
    > > > [ 3158.936616] [<c01040ee>] sysenter_past_esp+0x5f/0x85
    > > > [ 3158.936622] =======================
    > > > [ 3158.936624] Code: 55 8b 0d 80 a4 56 c0 57 56 53 eb 06 8d 74 26 00
    > > > 89 d1 8b 1d b4 a4 56 c0 8b 35 b0 a4 56 c0 8b 15 80 a4 56 c0 89 c8 83
    > > > e1 01 31 d0 <09> c8 75 e1 89 da 89 f0 5b 5e 5f 5d c3 90 8d b4 26 00 00
    > > > 00 00


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