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SubjectRe: crash in ocfs2_fast_symlink_readpage in kernel 3.5.0
From
On Sun, Jul 22, 2012 at 1:16 PM, Bret Towe <magnade@gmail.com> wrote:
> just booted a fresh 3.5 kernel and got the following on login via gdm
> on the client computer
> didn't see any crashes yet on any other computer but didn't give it
> long to try after seeing this
> let me know if you need more info
> this client is running debian wheezy 64bit
>
> Jul 22 12:48:38 ghoststar kernel: [ 382.563886] general protection
> fault: 0000 [#1] PREEMPT SMP
> Jul 22 12:48:38 ghoststar kernel: [ 382.563918] CPU 0
> Jul 22 12:48:38 ghoststar kernel: [ 382.563927] Modules linked in:
> ocfs2 quota_tree jbd2 sch_fq_codel xt_LOG xt_tcpudp nf_conntrack_ipv6
> nf_defrag_ipv6 xt_state nf_conntrack ip6table_mangle ip6table_filter
> ip6_tables x_tables cpufreq_userspace cpufreq_powersave
> cpufreq_conservative binfmt_misc iscsi_tcp libiscsi_tcp libiscsi
> scsi_transport_iscsi tcp_bic ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm
> ocfs2_nodemanager nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc
> af_packet ocfs2_stack_user dlm sctp crc32c libcrc32c ipv6
> ocfs2_stackglue configfs loop fuse aoe msr joydev snd_hda_codec_hdmi
> snd_hda_codec_realtek evdev snd_hda_intel snd_hda_codec snd_hwdep
> snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_seq_dummy
> snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq
> powernow_k8 mperf kvm_amd kvm snd_seq_device snd_timer psmouse pcspkr
> serio_raw asus_atk0110 snd k10temp soundcore i2c_piix4 button
> processor dm_mod uas usb_storage firewire_ohci r8169 firewire_core
> crc_itu_t [last unloaded: scsi_wait_scan]
> Jul 22 12:48:38 ghoststar kernel: [ 382.564352]
> Jul 22 12:48:38 ghoststar kernel: [ 382.564354] Pid: 3690, comm:
> fbsetbg Not tainted 3.5.0+ #4 System manufacturer System Product
> Name/M3A78-EM
> Jul 22 12:48:38 ghoststar kernel: [ 382.564395] RIP:
> 0010:[<ffffffff812901fd>] [<ffffffff812901fd>] strnlen+0xd/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.564428] RSP:
> 0000:ffff88011ed31b78 EFLAGS: 00010202
> Jul 22 12:48:38 ghoststar kernel: [ 382.564449] RAX: ffff880122caac00
> RBX: 495441c589455601 RCX: 0000000000000f3f
> Jul 22 12:48:38 ghoststar kernel: [ 382.564476] RDX: 0000000000000001
> RSI: 0000000000000f40 RDI: 495441c589455601
> Jul 22 12:48:38 ghoststar kernel: [ 382.564503] RBP: ffff88011ed31b78
> R08: ffff88011ed31b50 R09: ffffffffa0588fa0
> Jul 22 12:48:38 ghoststar kernel: [ 382.564530] R10: 0000000000000000
> R11: 0000000000000001 R12: ffffea00046ee040
> Jul 22 12:48:38 ghoststar kernel: [ 382.564557] R13: ffff88011e0ef138
> R14: ffffea00046ee040 R15: ffffffffa05e2a50
> Jul 22 12:48:38 ghoststar kernel: [ 382.564585] FS:
> 00007f6632782700(0000) GS:ffff88012fc00000(0000)
> knlGS:0000000000000000
> Jul 22 12:48:38 ghoststar kernel: [ 382.564616] CS: 0010 DS: 0000
> ES: 0000 CR0: 000000008005003b
> Jul 22 12:48:38 ghoststar kernel: [ 382.564638] CR2: 00007f24b14ea340
> CR3: 000000011ee66000 CR4: 00000000000007f0
> Jul 22 12:48:38 ghoststar kernel: [ 382.564665] DR0: 0000000000000000
> DR1: 0000000000000000 DR2: 0000000000000000
> Jul 22 12:48:38 ghoststar kernel: [ 382.564692] DR3: 0000000000000000
> DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Jul 22 12:48:38 ghoststar kernel: [ 382.564719] Process fbsetbg (pid:
> 3690, threadinfo ffff88011ed30000, task ffff880122382c80)
> Jul 22 12:48:38 ghoststar kernel: [ 382.564750] Stack:
> Jul 22 12:48:38 ghoststar kernel: [ 382.564758] ffff88011ed31bc8
> ffffffffa05e2aac ffff88011e0ef278 00000000000200da
> Jul 22 12:48:38 ghoststar kernel: [ 382.564790] ffff88011ed31bc8
> ffffffff810db189 ffff88011e0ef278 0000000000000000
> Jul 22 12:48:38 ghoststar kernel: [ 382.564822] ffff88011e0ef278
> 00000000000200da ffff88011ed31c28 ffffffff810db225
> Jul 22 12:48:38 ghoststar kernel: [ 382.564854] Call Trace:
> Jul 22 12:48:38 ghoststar kernel: [ 382.564892] [<ffffffffa05e2aac>]
> ocfs2_fast_symlink_readpage+0x5c/0x1a0 [ocfs2]
> Jul 22 12:48:38 ghoststar kernel: [ 382.564922] [<ffffffff810db189>]
> ? add_to_page_cache_lru+0x29/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.564947] [<ffffffff810db225>]
> do_read_cache_page+0x85/0x180
> Jul 22 12:48:38 ghoststar kernel: [ 382.564971] [<ffffffff810db354>]
> read_cache_page_async+0x14/0x20
> Jul 22 12:48:38 ghoststar kernel: [ 382.564995] [<ffffffff810db369>]
> read_cache_page+0x9/0x20
> Jul 22 12:48:38 ghoststar kernel: [ 382.565018] [<ffffffff81133115>]
> page_getlink.isra.21+0x25/0x80
> Jul 22 12:48:38 ghoststar kernel: [ 382.565042] [<ffffffff81133191>]
> page_follow_link_light+0x21/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.565066] [<ffffffff81133e1b>]
> link_path_walk+0x48b/0x950
> Jul 22 12:48:38 ghoststar kernel: [ 382.565089] [<ffffffff81134e62>]
> path_lookupat+0x52/0x7c0
> Jul 22 12:48:38 ghoststar kernel: [ 382.565112] [<ffffffff811dac47>]
> ? xfs_file_aio_read+0x187/0x370
> Jul 22 12:48:38 ghoststar kernel: [ 382.565136] [<ffffffff811355fc>]
> do_path_lookup+0x2c/0xc0
> Jul 22 12:48:38 ghoststar kernel: [ 382.565159] [<ffffffff81132ffe>]
> ? getname_flags+0x4e/0xf0
> Jul 22 12:48:38 ghoststar kernel: [ 382.565181] [<ffffffff811374d8>]
> user_path_at_empty+0x58/0xa0
> Jul 22 12:48:38 ghoststar kernel: [ 382.565205] [<ffffffff812581d6>]
> ? smack_cred_prepare+0x46/0x70
> Jul 22 12:48:38 ghoststar kernel: [ 382.565229] [<ffffffff8113752c>]
> user_path_at+0xc/0x10
> Jul 22 12:48:38 ghoststar kernel: [ 382.565251] [<ffffffff81126c1e>]
> sys_faccessat+0x9e/0x1c0
> Jul 22 12:48:38 ghoststar kernel: [ 382.565274] [<ffffffff815846fd>]
> system_call_fastpath+0x1a/0x1f
> Jul 22 12:48:38 ghoststar kernel: [ 382.565297] Code: c0 01 80 38 00
> 75 f7 48 29 f8 5d c3 31 c0 5d c3 66 66 66 66 66 2e 0f 1f 84 00 00 00
> 00 00 55 48 85 f6 48 8d 4e ff 48 89 e5 74 2a <80> 3f 00 74 25 48 89 f8
> 31 d2 eb 10 0f 1f 80 00 00 00 00 48 83
> Jul 22 12:48:38 ghoststar kernel: [ 382.565435] RIP
> [<ffffffff812901fd>] strnlen+0xd/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.565457] RSP <ffff88011ed31b78>
> Jul 22 12:48:38 ghoststar kernel: [ 382.573578] ---[ end trace
> 91842dd982a1cff1 ]---
> Jul 22 12:48:38 ghoststar kernel: [ 382.635330] general protection
> fault: 0000 [#2] PREEMPT SMP
> Jul 22 12:48:38 ghoststar kernel: [ 382.635440] CPU 1
> Jul 22 12:48:38 ghoststar kernel: [ 382.635473] Modules linked in:
> ocfs2 quota_tree jbd2 sch_fq_codel xt_LOG xt_tcpudp nf_conntrack_ipv6
> nf_defrag_ipv6 xt_state nf_conntrack ip6table_mangle ip6table_filter
> ip6_tables x_tables cpufreq_userspace cpufreq_powersave
> cpufreq_conservative binfmt_misc iscsi_tcp libiscsi_tcp libiscsi
> scsi_transport_iscsi tcp_bic ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm
> ocfs2_nodemanager nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc
> af_packet ocfs2_stack_user dlm sctp crc32c libcrc32c ipv6
> ocfs2_stackglue configfs loop fuse aoe msr joydev snd_hda_codec_hdmi
> snd_hda_codec_realtek evdev snd_hda_intel snd_hda_codec snd_hwdep
> snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_seq_dummy
> snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq
> powernow_k8 mperf kvm_amd kvm snd_seq_device snd_timer psmouse pcspkr
> serio_raw asus_atk0110 snd k10temp soundcore i2c_piix4 button
> processor dm_mod uas usb_storage firewire_ohci r8169 firewire_core
> crc_itu_t [last unloaded: scsi_wait_scan]
> Jul 22 12:48:38 ghoststar kernel: [ 382.637093]
> Jul 22 12:48:38 ghoststar kernel: [ 382.637101] Pid: 3680, comm:
> gnome-settings- Tainted: G D 3.5.0+ #4 System manufacturer
> System Product Name/M3A78-EM
> Jul 22 12:48:38 ghoststar kernel: [ 382.637280] RIP:
> 0010:[<ffffffff812901fd>] [<ffffffff812901fd>] strnlen+0xd/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.637404] RSP:
> 0018:ffff88011efe3d08 EFLAGS: 00010202
> Jul 22 12:48:38 ghoststar kernel: [ 382.637485] RAX: ffff880122caac00
> RBX: 495441c589455601 RCX: 0000000000000f3f
> Jul 22 12:48:38 ghoststar kernel: [ 382.637591] RDX: 0000000000000001
> RSI: 0000000000000f40 RDI: 495441c589455601
> Jul 22 12:48:38 ghoststar kernel: [ 382.637696] RBP: ffff88011efe3d08
> R08: ffff88011efe3ce0 R09: ffffffffa0588fa0
> Jul 22 12:48:38 ghoststar kernel: [ 382.637801] R10: 0000000000000000
> R11: 0000000000000001 R12: ffffea0004762480
> Jul 22 12:48:38 ghoststar kernel: [ 382.637905] R13: ffff88011e0f12f8
> R14: ffffea0004762480 R15: ffffffffa05e2a50
> Jul 22 12:48:38 ghoststar kernel: [ 382.638012] FS:
> 00007f24c7a7e920(0000) GS:ffff88012fc40000(0000)
> knlGS:0000000000000000
> Jul 22 12:48:38 ghoststar kernel: [ 382.644668] CS: 0010 DS: 0000
> ES: 0000 CR0: 0000000080050033
> Jul 22 12:48:38 ghoststar kernel: [ 382.651302] CR2: 00007f24a7dc8000
> CR3: 0000000122fa1000 CR4: 00000000000007e0
> Jul 22 12:48:38 ghoststar kernel: [ 382.657814] DR0: 0000000000000000
> DR1: 0000000000000000 DR2: 0000000000000000
> Jul 22 12:48:38 ghoststar kernel: [ 382.664131] DR3: 0000000000000000
> DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Jul 22 12:48:38 ghoststar kernel: [ 382.670238] Process
> gnome-settings- (pid: 3680, threadinfo ffff88011efe2000, task
> ffff8801223e1640)
> Jul 22 12:48:38 ghoststar kernel: [ 382.676242] Stack:
> Jul 22 12:48:38 ghoststar kernel: [ 382.682018] ffff88011efe3d58
> ffffffffa05e2aac ffff88011e0f1438 00000000000200da
> Jul 22 12:48:38 ghoststar kernel: [ 382.687788] ffff88011efe3d58
> ffffffff810db189 ffff88011e0f1438 0000000000000000
> Jul 22 12:48:38 ghoststar kernel: [ 382.693458] ffff88011e0f1438
> 00000000000200da ffff88011efe3db8 ffffffff810db225
> Jul 22 12:48:38 ghoststar kernel: [ 382.699075] Call Trace:
> Jul 22 12:48:38 ghoststar kernel: [ 382.704682] [<ffffffffa05e2aac>]
> ocfs2_fast_symlink_readpage+0x5c/0x1a0 [ocfs2]
> Jul 22 12:48:38 ghoststar kernel: [ 382.710309] [<ffffffff810db189>]
> ? add_to_page_cache_lru+0x29/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.715919] [<ffffffff810db225>]
> do_read_cache_page+0x85/0x180
> Jul 22 12:48:38 ghoststar kernel: [ 382.721500] [<ffffffff810db354>]
> read_cache_page_async+0x14/0x20
> Jul 22 12:48:38 ghoststar kernel: [ 382.727068] [<ffffffff810db369>]
> read_cache_page+0x9/0x20
> Jul 22 12:48:38 ghoststar kernel: [ 382.732598] [<ffffffff81133115>]
> page_getlink.isra.21+0x25/0x80
> Jul 22 12:48:38 ghoststar kernel: [ 382.738092] [<ffffffff81133191>]
> page_follow_link_light+0x21/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.743549] [<ffffffff81132d0d>]
> generic_readlink+0x3d/0xa0
> Jul 22 12:48:38 ghoststar kernel: [ 382.748970] [<ffffffff811374e3>]
> ? user_path_at_empty+0x63/0xa0
> Jul 22 12:48:38 ghoststar kernel: [ 382.754404] [<ffffffff812a2005>]
> ? __percpu_counter_add+0x75/0xc0
> Jul 22 12:48:38 ghoststar kernel: [ 382.759869] [<ffffffff81105428>]
> ? do_munmap+0x338/0x410
> Jul 22 12:48:38 ghoststar kernel: [ 382.765286] [<ffffffff8112cb91>]
> sys_readlinkat+0xa1/0xc0
> Jul 22 12:48:38 ghoststar kernel: [ 382.770652] [<ffffffff8112cbc6>]
> sys_readlink+0x16/0x20
> Jul 22 12:48:38 ghoststar kernel: [ 382.775960] [<ffffffff815846fd>]
> system_call_fastpath+0x1a/0x1f
> Jul 22 12:48:38 ghoststar kernel: [ 382.781300] Code: c0 01 80 38 00
> 75 f7 48 29 f8 5d c3 31 c0 5d c3 66 66 66 66 66 2e 0f 1f 84 00 00 00
> 00 00 55 48 85 f6 48 8d 4e ff 48 89 e5 74 2a <80> 3f 00 74 25 48 89 f8
> 31 d2 eb 10 0f 1f 80 00 00 00 00 48 83
> Jul 22 12:48:38 ghoststar kernel: [ 382.792778] RIP
> [<ffffffff812901fd>] strnlen+0xd/0x40
> Jul 22 12:48:38 ghoststar kernel: [ 382.798385] RSP <ffff88011efe3d08>
> Jul 22 12:48:38 ghoststar kernel: [ 382.804556] ---[ end trace
> 91842dd982a1cff2 ]---

it looks like you have a patch for this problem in a queue somewhere
(email found on ocfs2-dev:
https://oss.oracle.com/pipermail/ocfs2-devel/2012-August/008677.html )
but its not in 3.6, any reason for the delay?
I've been running that patch on 3.5 for a while now likely since
around the time i found that email
and its been working well


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