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[Bug 359] apparent race condition with NFS causes xfs_forced_shutdown

To: xfs-master@xxxxxxxxxxx
Subject: [Bug 359] apparent race condition with NFS causes xfs_forced_shutdown
From: bugzilla-daemon@xxxxxxxxxxx
Date: Tue, 7 Sep 2004 07:54:59 -0700
Sender: linux-xfs-bounce@xxxxxxxxxxx
http://oss.sgi.com/bugzilla/show_bug.cgi?id=359





------- Additional Comments From greg@xxxxxxxxx  2004-07-09 07:54 PDT -------
Also happens in Fedora test kernel 2.6.8-1.541smp although in a slightly
differnt way:

Sep  7 07:27:37 sh11 kernel: inode_doinit_with_dentry:  getxattr returned 5 for
dev=sdb6 ino=4195941
Sep  7 07:27:37 sh11 kernel: post_create:  setxattr failed, rc=5 (dev=sdb6
ino=4195941)
Sep  7 07:27:37 sh11 kernel: xfs_iget_core: ambiguous vns: vp/0x7cc014a0,
invp/0x6cbf0798
Sep  7 07:27:37 sh11 kernel: ------------[ cut here ]------------
Sep  7 07:27:37 sh11 kernel: kernel BUG at fs/xfs/support/debug.c:106!
Sep  7 07:27:37 sh11 kernel: invalid operand: 0000 [#1]
Sep  7 07:27:37 sh11 kernel: SMP
Sep  7 07:27:37 sh11 kernel: Modules linked in: nfs nfsd exportfs lockd xfs md5
ipv6 autofs4 sunrpc button battery asus_acpi ac ohci_hcd cfi_probe gen_probe
scb2_flash mtdcore chipreg map_funcs tg3 e1000 floppy ext3 jbd dm_mod aic7xxx
mptscsih mptbase sd_mod scsi_mod
Sep  7 07:27:37 sh11 kernel: CPU:    2
Sep  7 07:27:37 sh11 kernel: EIP:    0060:[<82cb5ee6>]    Not tainted VLI
Sep  7 07:27:37 sh11 kernel: EFLAGS: 00010246   (2.6.8-1.541smp)
Sep  7 07:27:37 sh11 kernel: EIP is at cmn_err+0xd9/0xe8 [xfs]
Sep  7 07:27:37 sh11 kernel: eax: 00000000   ebx: 00000000   ecx: 7ced1af8  
edx: 82cbae00
Sep  7 07:27:37 sh11 kernel: esi: 82cbaea8   edi: 82ccbcde   ebp: 00000293  
esp: 7ced1b00
Sep  7 07:27:37 sh11 kernel: ds: 007b   es: 007b   ss: 0068
Sep  7 07:27:37 sh11 kernel: Process nfsd (pid: 4952, threadinfo=7ced1000
task=7d137770)
Sep  7 07:27:37 sh11 kernel: Stack: 00000000 00000000 6cbf07bc 7cecdb00 00400665
00000000 82c8d1b2 00000000
Sep  7 07:27:37 sh11 kernel:        82cb82b1 7cc014a0 6cbf0798 6cbf07bc 00000000
7fb77400 6cbf0798 673b84ac
Sep  7 07:27:37 sh11 kernel:        00000000 00000000 6cbf07bc 023c00c0 7ced1000
00000008 82c8d67f 00400665
Sep  7 07:27:37 sh11 kernel: Call Trace:
Sep  7 07:27:37 sh11 kernel:  [<82c8d1b2>] xfs_iget_core+0x146/0x58b [xfs]
Sep  7 07:27:37 sh11 kernel:  [<82c8d67f>] xfs_iget+0x88/0x139 [xfs]
Sep  7 07:27:37 sh11 kernel:  [<82ca6a51>] xfs_vget+0x34/0x9e [xfs]
Sep  7 07:27:37 sh11 kernel:  [<82cb528f>] vfs_vget+0x1a/0x1d [xfs]
Sep  7 07:27:37 sh11 kernel:  [<82cb4f2c>] linvfs_get_dentry+0x3b/0x6c [xfs]
Sep  7 07:27:37 sh11 kernel:  [<829b802d>] find_exported_dentry+0x2d/0x7e8
[exportfs]
Sep  7 07:27:37 sh11 kernel:  [<022d9168>] schedule+0x96c/0x9f7
Sep  7 07:27:37 sh11 kernel:  [<829b8084>] find_exported_dentry+0x84/0x7e8
[exportfs]
Sep  7 07:27:37 sh11 kernel:  [<02280167>] __lock_sock+0xdc/0xe4
Sep  7 07:27:37 sh11 kernel:  [<021c79f1>] __copy_to_user_ll+0x3f/0x46
Sep  7 07:27:37 sh11 kernel:  [<0215a095>] put_user_size+0x1c/0x2d
Sep  7 07:27:37 sh11 kernel:  [<0228292c>] memcpy_toiovec+0x27/0x47
Sep  7 07:27:37 sh11 kernel:  [<02282f6f>] skb_copy_datagram_iovec+0x111/0x1e1
Sep  7 07:27:37 sh11 kernel:  [<0228089e>] release_sock+0xa5/0xab
Sep  7 07:27:37 sh11 kernel:  [<022a44a7>] tcp_recvmsg+0x61e/0x659
Sep  7 07:27:37 sh11 kernel:  [<02280983>] sock_common_recvmsg+0x30/0x46
Sep  7 07:27:38 sh11 kernel:  [<0227d74e>] sock_recvmsg+0xef/0x10c
Sep  7 07:27:38 sh11 kernel:  [<0211cab3>] recalc_task_prio+0x128/0x133
Sep  7 07:27:38 sh11 kernel:  [<0211cb46>] activate_task+0x88/0x95
Sep  7 07:27:38 sh11 kernel:  [<829b8add>] export_decode_fh+0x61/0x6d [exportfs]
Sep  7 07:27:38 sh11 kernel:  [<82bce9ec>] nfsd_acceptable+0x0/0x112 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<829b8a7c>] export_decode_fh+0x0/0x6d [exportfs]
Sep  7 07:27:38 sh11 kernel:  [<82bcee38>] fh_verify+0x33a/0x4ad [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bce9ec>] nfsd_acceptable+0x0/0x112 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bd05c3>] nfsd_open+0x1d/0x142 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bd0c0a>] nfsd_write+0x25/0x289 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82b3a1b3>] svcauth_unix_accept+0x207/0x27a 
[sunrpc]
Sep  7 07:27:38 sh11 kernel:  [<82bd6662>] nfsd3_proc_write+0xbf/0xd5 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bd7cd5>] nfs3svc_decode_writeargs+0x0/0x15a 
[nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bcd751>] nfsd_dispatch+0xba/0x15d [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82b3684d>] svc_process+0x331/0x56c [sunrpc]
Sep  7 07:27:38 sh11 kernel:  [<82bcd4b7>] nfsd+0x274/0x454 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bcd243>] nfsd+0x0/0x454 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<82bcd243>] nfsd+0x0/0x454 [nfsd]
Sep  7 07:27:38 sh11 kernel:  [<021041f1>] kernel_thread_helper+0x5/0xb
Sep  7 07:27:38 sh11 kernel: Code: b2 01 74 08 0f 0b 6e 00 8f ae cb 82 0f b6 05
04 97 cc 82 84 c0 7e 08 0f 0b 6f 00 8f ae cb 82 86 15 04 97 cc 82 55 9d 85 db 75
08 <0f> 0b 6a 00 6f ae cb 82 58 5a 5b 5e 5f 5d c3 55 57 89 d7 56 89


and the filesystem does not shut down...



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