linux-kernel - crash in ocfs2_fast_symlink

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Message-ID: <CALjC5hYxtPymauFddf4Qci3S-KsZHHck0LKQPZY5ocHcLw-XrQ@mail.gmail.com>
Date:	Sun, 22 Jul 2012 13:16:21 -0700
From:	Bret Towe <magnade@...il.com>
To:	linux-kernel@...r.kernel.org, Joel Becker <jlbec@...lplan.org>
Subject: crash in ocfs2_fast_symlink_readpage in kernel 3.5.0

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 ]---
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