2.6.26rc4 GFS2 oops.

[Dave Jones]

Single node GFS2 filesystem. Run fsx. Boom.

BUG: unable to handle kernel paging request at ffff81002690e000
IP: [<ffffffffa049fb51>] :gfs2:rgblk_search+0x14f/0x3b3
PGD 8063 PUD 9063 PMD 26845163 PTE 800000002690e160
Oops: 0000 [1] SMP DEBUG_PAGEALLOC
CPU 3 
Modules linked in: lock_nolock gfs2 sunrpc ipt_REJECT nf_conntrack_ipv4 iptable_filter ip_tables ip6t_REJECT xt_tcpudp nf_conntrack_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables x_tables ipv6 ext2 vfat fat xfs loop dm_mirror dm_log dm_mod ppdev raid1 snd_intel8x0 snd_ac97_codec ac97_bus dcdbas tuner_simple tuner_types snd_seq_dummy tda9887 tda8290 tea5767 snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device wm8775 parport_pc parport floppy cx25840 snd_pcm_oss snd_mixer_oss tuner snd_pcm ivtv sr_mod sg snd_timer snd i2c_algo_bit cdrom pcspkr i2c_i801 soundcore cx2341x snd_page_alloc v4l2_common videodev v4l1_compat iTCO_wdt tveeprom iTCO_vendor_support i2c_core e1000 e752x_edac edac_core button shpchp ata_generic ata_piix pata_acpi libata sd_mod scsi_mod raid456 async_xor async_memcpy async_tx xor raid0 ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: freq_table]
Pid: 3016, comm: fsx Not tainted 2.6.26-0.33.rc4.fc10.x86_64 #1
RIP: 0010:[<ffffffffa049fb51>]  [<ffffffffa049fb51>] :gfs2:rgblk_search+0x14f/0x3b3
RSP: 0000:ffff81003241fa38  EFLAGS: 00010297
RAX: 5555555555555555 RBX: ffff81003989f108 RCX: 0000000000000000
RDX: ffff81002690dffb RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff81003241fa98 R08: ffff81002690dfff R09: 0000000000000000
R10: ffff81002690e000 R11: 5555555555555555 R12: ffff81002690d018
R13: 0000000000000002 R14: ffff81002690d018 R15: ffff81003241c180
FS:  00007fe823bcb6f0(0000) GS:ffff81003f811af0(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff81002690e000 CR3: 00000000324a7000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process fsx (pid: 3016, threadinfo ffff81003241e000, task ffff8100331325a0)
Stack:  ffff81003241fa58 0000000200000000 ffff81003241fabc 020281003281ec40
 ffff81003989f0c8 0000000200000004 ffff810000000001 ffff81003241c180
 0000000000000000 0000000000000000 ffff81003281ebf0 ffff81003241fb80
Call Trace:
 [<ffffffffa04a05ff>] :gfs2:try_rgrp_unlink+0x5b/0xc1
 [<ffffffffa04a0eb7>] :gfs2:gfs2_inplace_reserve_i+0x302/0x6db
 [<ffffffffa0497cb2>] :gfs2:gfs2_page_mkwrite+0x16f/0x31a
 [<ffffffff81057177>] ? trace_hardirqs_on+0xf1/0x115
 [<ffffffff812af05b>] ? _read_unlock_irq+0x2b/0x31
 [<ffffffff81082b0e>] ? find_lock_page+0x9c/0xab
 [<ffffffffa0497bb0>] ? :gfs2:gfs2_page_mkwrite+0x6d/0x31a
 [<ffffffff810915f8>] __do_fault+0x1a5/0x3a8
 [<ffffffff81093173>] handle_mm_fault+0x339/0x6f3
 [<ffffffff812b1a9f>] ? do_page_fault+0x3f2/0x8b9
 [<ffffffff812b1b57>] do_page_fault+0x4aa/0x8b9
 [<ffffffff811447a1>] ? __up_write+0xf0/0xff
 [<ffffffff810556b5>] ? lock_release_holdtime+0x1e/0x108
 [<ffffffff812af175>] ? _spin_unlock_irqrestore+0x3f/0x47
 [<ffffffff81057177>] ? trace_hardirqs_on+0xf1/0x115
 [<ffffffff811447a1>] ? __up_write+0xf0/0xff
 [<ffffffff812aed64>] ? trace_hardirqs_on_thunk+0x35/0x3a
 [<ffffffff81057177>] ? trace_hardirqs_on+0xf1/0x115
 [<ffffffff812af86d>] error_exit+0x0/0xa9


Code: 39 c2 75 13 eb 39 44 89 c9 4c 89 e0 48 89 c2 8d 47 ff 4c 8d 44 02 01 4c 39 d2 73 3b 0f b6 3a eb ab 48 b8 55 55 55 55 55 55 55 55 <48> 23 02 48 8d 7a 08 0f 18 0f 4c 39 d8 75 0e 48 89 fa eb 04 4d 
RIP  [<ffffffffa049fb51>] :gfs2:rgblk_search+0x14f/0x3b3
 RSP <ffff81003241fa38>
CR2: ffff81002690e000
---[ end trace cf259c4517fc15f3 ]---
BUG: sleeping function called from invalid context at kernel/rwsem.c:21
in_atomic():0, irqs_disabled():1
INFO: lockdep is turned off.
irq event stamp: 17166792
hardirqs last  enabled at (17166791): [<ffffffff812af175>] _spin_unlock_irqrestore+0x3f/0x47
hardirqs last disabled at (17166792): [<ffffffff812b16d3>] do_page_fault+0x26/0x8b9
softirqs last  enabled at (17166514): [<ffffffff8103c8bb>] __do_softirq+0xe4/0xf1
softirqs last disabled at (17166509): [<ffffffff8100d23c>] call_softirq+0x1c/0x28
Pid: 3016, comm: fsx Tainted: G      D   2.6.26-0.33.rc4.fc10.x86_64 #1

Call Trace:
 [<ffffffff81054fb2>] ? print_irqtrace_events+0x110/0x114
 [<ffffffff8102ffb5>] __might_sleep+0xd9/0xdb
 [<ffffffff812ade5d>] down_read+0x20/0x6d
 [<ffffffff81066b32>] acct_collect+0x42/0x1a4
 [<ffffffff8103aa6f>] do_exit+0x21b/0x774
 [<ffffffff811ab797>] ? do_unblank_screen+0x112/0x12a
 [<ffffffff812aff58>] oops_begin+0x0/0x90
 [<ffffffff812b1e8a>] do_page_fault+0x7dd/0x8b9
 [<ffffffff81011dab>] ? native_sched_clock+0x50/0x6d
 [<ffffffff81011dab>] ? native_sched_clock+0x50/0x6d
 [<ffffffff81056fe6>] ? mark_held_locks+0x5c/0x77
 [<ffffffff81011dab>] ? native_sched_clock+0x50/0x6d
 [<ffffffff81011dab>] ? native_sched_clock+0x50/0x6d
 [<ffffffff812af86d>] error_exit+0x0/0xa9
 [<ffffffffa049fb51>] ? :gfs2:rgblk_search+0x14f/0x3b3
 [<ffffffffa04a05ff>] ? :gfs2:try_rgrp_unlink+0x5b/0xc1
 [<ffffffffa04a0eb7>] ? :gfs2:gfs2_inplace_reserve_i+0x302/0x6db
 [<ffffffffa0497cb2>] ? :gfs2:gfs2_page_mkwrite+0x16f/0x31a
 [<ffffffff81057177>] ? trace_hardirqs_on+0xf1/0x115
 [<ffffffff812af05b>] ? _read_unlock_irq+0x2b/0x31
 [<ffffffff81082b0e>] ? find_lock_page+0x9c/0xab
 [<ffffffffa0497bb0>] ? :gfs2:gfs2_page_mkwrite+0x6d/0x31a
 [<ffffffff810915f8>] ? __do_fault+0x1a5/0x3a8
 [<ffffffff81093173>] ? handle_mm_fault+0x339/0x6f3
 [<ffffffff812b1a9f>] ? do_page_fault+0x3f2/0x8b9
 [<ffffffff812b1b57>] ? do_page_fault+0x4aa/0x8b9
 [<ffffffff811447a1>] ? __up_write+0xf0/0xff
 [<ffffffff810556b5>] ? lock_release_holdtime+0x1e/0x108
 [<ffffffff812af175>] ? _spin_unlock_irqrestore+0x3f/0x47
 [<ffffffff81057177>] ? trace_hardirqs_on+0xf1/0x115
 [<ffffffff811447a1>] ? __up_write+0xf0/0xff
 [<ffffffff812aed64>] ? trace_hardirqs_on_thunk+0x35/0x3a
 [<ffffffff81057177>] ? trace_hardirqs_on+0xf1/0x115
 [<ffffffff812af86d>] ? error_exit+0x0/0xa9


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