Message-ID: <CALjC5hac=Wh_8J0qn0MCo6qXRtjQf1R-8jn79hMma0Qghg7jSQ@mail.gmail.com>
Date:	Mon, 21 May 2012 20:11:26 -0700
From:	Bret Towe <magnade@...il.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ocfs2-devel@....oracle.com,
	Andrew Morton <akpm@...ux-foundation.org>, mfasheh@...e.com,
	jlbec@...lplan.org
Subject: Re: BUG in ofcs2_change_file_space

On Thu, Jan 5, 2012 at 2:23 PM, Bret Towe <magnade@...il.com> wrote:
> got an oops on kernel 3.2 with ocfs2
> thunderbird loading an email with images is the trigger looks repeatable for me
> cache file being saved to /home directory is my guess
>
> firefox hasnt done it but its cache is in a ramdisk
> 3.1.6 wasn't doing this
>
> let me know what info you need
> below is the backtrace from syslog
> I would like to test whatever patch you have also
>
> Jan  5 14:02:23 notmini64 kernel: [ 1431.675822] BUG: unable to handle
> kernel NULL pointer dereference at 0000000000000038
> Jan  5 14:02:23 notmini64 kernel: [ 1431.675981] IP:
> [<ffffffffa0524f35>] __ocfs2_change_file_space+0x915/0xe40 [ocfs2]
> Jan  5 14:02:23 notmini64 kernel: [ 1431.676228] PGD ca69a067 PUD
> c745b067 PMD 0
> Jan  5 14:02:23 notmini64 kernel: [ 1431.676326] Oops: 0000 [#1] PREEMPT SMP
> Jan  5 14:02:23 notmini64 kernel: [ 1431.676416] CPU 1
> Jan  5 14:02:23 notmini64 kernel: [ 1431.676457] Modules linked in:
> nls_iso8859_1 nls_cp437 vfat fat uas usb_storage ocfs2 jbd2 quota_tree
> crc32c cpufreq_userspace cpufreq_powersave cpufreq_conservative
> binfmt_misc iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi fuse
> ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager nfsd nfs
> lockd fscache auth_rpcgss nfs_acl sunrpc ipv6 af_packet tcp_bic
> ocfs2_stack_user dlm configfs ocfs2_stackglue powernow_k8 mperf usblp
> loop kvm_amd kvm snd_hda_codec_via snd_hda_codec_hdmi snd_seq_dummy
> snd_seq_oss snd_seq_midi snd_rawmidi snd_hda_intel snd_hda_codec
> snd_seq_midi_event snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq
> psmouse snd_timer snd_seq_device serio_raw pcspkr k10temp joydev snd
> evbug evdev i2c_piix4 soundcore snd_page_alloc button processor raid10
> raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq
> async_tx raid1 raid0 multipath linear md_mod atl1c [last unloaded:
> scsi_wait_scan]
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678364]
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678399] Pid: 2835, comm:
> thunderbird-bin Not tainted 3.2.0+ #45 System manufacturer System
> Product Name/F1A75-M
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678610] RIP:
> 0010:[<ffffffffa0524f35>]  [<ffffffffa0524f35>]
> __ocfs2_change_file_space+0x915/0xe40 [ocfs2]
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678859] RSP:
> 0018:ffff8800c75ffe28  EFLAGS: 00010246
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] RAX: 0000000000000000
> RBX: ffff88010b810000 RCX: ffff88010b364400
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] RDX: 0000000000000000
> RSI: 0000000000000001 RDI: ffffffffa053250d
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] RBP: ffff8800c75ffec8
> R08: 00caec6a28080000 R09: ffff88010b364400
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] R10: 000000000000cd75
> R11: 0000000000000000 R12: 0000000000000000
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] R13: ffff88008b823e78
> R14: ffff88008b823f18 R15: ffff8800cae091e0
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] FS:
> 00007fde742f5700(0000) GS:ffff88010fc80000(0000)
> knlGS:0000000000000000
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] CS:  0010 DS: 0000
> ES: 0000 CR0: 0000000080050033
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] CR2: 0000000000000038
> CR3: 00000000ca540000 CR4: 00000000000006e0
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] DR0: 0000000000000000
> DR1: 0000000000000000 DR2: 0000000000000000
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] DR3: 0000000000000000
> DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] Process
> thunderbird-bin (pid: 2835, threadinfo ffff8800c75fe000, task
> ffff8800c6788000)
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] Stack:
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  ffff8800c75fffd8
> ffff8800c75fffd8 000000000000cd75 0000000000000000
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  000000010ab4c900
> 0000000000000000 000000000000cd75 0000000000000000
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  ffff88010b810000
> ffff88008b823d98 ffff8800c75ffe98 ffff8800caec6a28
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] Call Trace:
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  [<ffffffffa05254d4>]
> ocfs2_fallocate+0x74/0x80 [ocfs2]
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  [<ffffffff8111e04d>]
> do_fallocate+0xed/0x160
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  [<ffffffff8111e106>]
> sys_fallocate+0x46/0x70
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  [<ffffffff8155c3d2>]
> system_call_fastpath+0x16/0x1b
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] Code: 68 49 89 55 78
> 4c 89 ee 48 8b 55 b8 49 89 45 60 4c 89 ff 49 89 45 70 e8 da 5d 00 00
> 85 c0 41 89 c4 0f 88 53 01 00 00 48 8b 55 88 <f7> 42 38 00 10 10 00 74
> 05 41 80 4f 14 01 4c 89 fe 48 89 df e8
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] RIP
> [<ffffffffa0524f35>] __ocfs2_change_file_space+0x915/0xe40 [ocfs2]
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915]  RSP <ffff8800c75ffe28>
> Jan  5 14:02:23 notmini64 kernel: [ 1431.678915] CR2: 0000000000000038
> Jan  5 14:02:23 notmini64 kernel: [ 1431.695509] ---[ end trace
> 7e71a95e14e247b3 ]---


a patch has been available for this for a while now
found here: http://oss.oracle.com/pipermail/ocfs2-devel/2012-January/008464.html
but it still has not hit mainline
is there any way we can get this included?
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