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kernel: Access to block zero: fs: <sdg> inode: 231137029....

To: xfs@xxxxxxxxxxx
Subject: kernel: Access to block zero: fs: <sdg> inode: 231137029....
From: Ralf Gross <Ralf-Lists@xxxxxxxxxxxx>
Date: Mon, 9 Feb 2009 15:33:15 +0100
Sender: Ralf Gross <rg@xxxxxxxxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.9i
Hello,

this is the second time I got hit by this problem in the last 2 months.

The server did respond to ping and all processes were still running, but the
load went up to >30. Neither a shutdown nor a sync command could be executed,
in the end I had to reset the server because nobody could access the samba
shares anymore. 

System: Debian Etch linux-image-2.6.18-6-amd64 (since today 2.6.24 from
etch-n-half). sdg is a fibre attached (QLA2422) RAID array.

Any idea what the reason for this could be? xfs_check of /dev/sdg didn't find 
anything.

Ralf


Feb  6 20:53:04 VU0EF005 kernel: Access to block zero: fs: <sdg> inode: 
231137029 start_block : 0 start_off : 0 blkcnt : 0 extent-state : 0 
Feb  6 20:53:04 VU0EF005 kernel: ----------- [cut here ] --------- [please bite 
here ] ---------
Feb  6 20:53:04 VU0EF005 kernel: Kernel BUG at fs/xfs/support/debug.c:57
Feb  6 20:53:04 VU0EF005 kernel: invalid opcode: 0000 [1] SMP 
Feb  6 20:53:04 VU0EF005 kernel: CPU 0 
Feb  6 20:53:04 VU0EF005 kernel: Modules linked in: nfs nfsd exportfs lockd 
nfs_acl sunrpc button ac battery ipv6 bonding xfs loop sr_mod parport_pc 
parport floppy sg
 i2c_i801 i2c_core serio_raw psmouse pcspkr shpchp pci_hotplug evdev joydev 
ext3 jbd mbcache dm_mirror dm_snapshot dm_mod raid1 md_mod ide_generic usbhid 
usb_storage 
ide_cd cdrom ehci_hcd uhci_hcd e1000 sd_mod thermal processor fan qla2xxx 
firmware_class scsi_transport_fc ahci libata scsi_mod piix ide_core
Feb  6 20:53:04 VU0EF005 kernel: Pid: 10532, comm: smbd Not tainted 
2.6.18-6-amd64 #1
Feb  6 20:53:04 VU0EF005 kernel: RIP: 0010:[<ffffffff88295be3>]  
[<ffffffff88295be3>] :xfs:cmn_err+0xda/0x11f
Feb  6 20:53:04 VU0EF005 kernel: RSP: 0018:ffff810132b95868  EFLAGS: 00010246
Feb  6 20:53:04 VU0EF005 kernel: RAX: 000000000000006f RBX: ffffffff88297a7c 
RCX: ffff81042149c000
Feb  6 20:53:04 VU0EF005 kernel: RDX: 0000000000000003 RSI: 0000000000000297 
RDI: ffffffff882afc8c
Feb  6 20:53:04 VU0EF005 kernel: RBP: 0000000000000000 R08: ffffffff8044f868 
R09: 0000000000000000
Feb  6 20:53:04 VU0EF005 kernel: R10: 0000000000000046 R11: ffff810001036620 
R12: 0000000000000297
Feb  6 20:53:04 VU0EF005 kernel: R13: ffff810219837a00 R14: 0000000001840000 
R15: ffff810132b95c58
Feb  6 20:53:04 VU0EF005 kernel: FS:  00002b9024223e80(0000) 
GS:ffffffff80521000(0000) knlGS:0000000000000000
Feb  6 20:53:04 VU0EF005 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 
000000008005003b
Feb  6 20:53:04 VU0EF005 kernel: CR2: 00002b7956cb2000 CR3: 00000002121d4000 
CR4: 00000000000006e0
Feb  6 20:53:04 VU0EF005 kernel: Process smbd (pid: 10532, threadinfo 
ffff810132b94000, task ffff81041e62f080)
Feb  6 20:53:04 VU0EF005 kernel: Stack:  0000003000000030 ffff810132b95968 
ffff810132b95888 000000000000183f
Feb  6 20:53:04 VU0EF005 kernel: ffffffff8826f6cb ffff810132b95ba0 
ffff810420f6e2e0 000000000dc6df05
Feb  6 20:53:04 VU0EF005 kernel: 0000000000000000 0000000000000000 
ffff810219835000 ffff810219837a00
Feb  6 20:53:04 VU0EF005 kernel: Call Trace:
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8826f6cb>] 
:xfs:xfs_iext_get_ext+0x43/0x69
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8826f6cb>] 
:xfs:xfs_iext_get_ext+0x43/0x69
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff88254746>] 
:xfs:xfs_bmap_search_multi_extents+0x9a/0xd7
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8022e05e>] __up_write+0x21/0x10d
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff88254838>] 
:xfs:xfs_bmap_search_extents+0xb5/0xc2
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff88254c0a>] 
:xfs:xfs_bmapi+0x29a/0x1c83
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff80239491>] 
remove_wait_queue+0x12/0x45
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff802c041a>] free_poll_entry+0x11/0x1a
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff802186c7>] poll_freewait+0x29/0x6a
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8020fa36>] do_select+0x41c/0x439
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8027c98d>] 
default_wake_function+0x0/0xe
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff882933e5>] 
:xfs:xfs_zero_eof+0x180/0x22e
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8025def2>] _spin_lock_bh+0x9/0x14
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8020d5c4>] current_fs_time+0x3b/0x40
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8025d914>] 
__down_write_nested+0x12/0x9a
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8021b858>] tcp_recvmsg+0x9f0/0xb05
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff882940af>] :xfs:xfs_write+0x4af/0x95c
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8038b7f5>] sock_aio_read+0x4f/0x5e
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8829080a>] 
:xfs:xfs_file_aio_write+0x69/0x6e
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff80215ebd>] do_sync_write+0xc7/0x104
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8028fa92>] 
autoremove_wake_function+0x0/0x2e
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8022ae78>] mntput_no_expire+0x19/0x8b
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff80214967>] vfs_write+0xce/0x174
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff8023fc8d>] sys_pwrite64+0x50/0x70
Feb  6 20:53:04 VU0EF005 kernel: [<ffffffff80257bd6>] system_call+0x7e/0x83
Feb  6 20:53:04 VU0EF005 kernel: 
Feb  6 20:53:04 VU0EF005 kernel: 
Feb  6 20:53:04 VU0EF005 kernel: Code: 0f 0b 68 b0 b0 29 88 c2 39 00 eb 2b 48 
c7 c6 ce b0 29 88 48 
Feb  6 20:53:04 VU0EF005 kernel: RIP  [<ffffffff88295be3>] 
:xfs:cmn_err+0xda/0x11f
Feb  6 20:53:04 VU0EF005 kernel: RSP <ffff810132b95868>

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