Bug#364780: bug report: package kernel-image-2.6.8-i386, bug: xfs_iget_core: ambiguous vns, kernel BUG at fs/xfs/support/debug.c:106!
Package: kernel-image-2.6.8-i386
Version: 2.6.8-3-686-smp
The following kernel oops happened on an SMP (dual Xeon) system which
serves NFS for 26 clients, with XFS filesystems on a 3ware raid 5 device:
Kernel oops:
kernel: xfs_iget_core: ambiguous vns: vp/0xdab49800, invp/0xdab49200
kernel: ------------[ cut here ]------------
kernel: kernel BUG at fs/xfs/support/debug.c:106!
kernel: invalid operand: 0000 [#1]
kernel: PREEMPT SMP
kernel: Modules linked in: radeonfb i2c_algo_bit cfbcopyarea cfbimgblt
cfbfillrect w83627hf eeprom w83781d i2c_sensor i2c_isa i2c_i801 softdog
nfsd i2c_dev i2c_core nfs lockd sunrpc af_packet iptable_nat ipt_REJECT
ipt_state ip_conntrack iptable_filter ip_tables ip6table_filter ip6_tables
ipv6 binfmt_misc usbmouse usbhid dm_mod md thermal processor fan button
battery asus_acpi ac uhci_hcd hw_random pciehp pci_hotplug e1000 e100 mii
floppy usbcore unix piix sd_mod capability commoncap 3w_9xxx scsi_mod xfs
exportfs ide_disk ide_generic ide_core
kernel: CPU: 2
kernel: EIP: 0060:[<f89881c5>] Not tainted
kernel: EFLAGS: 00010246 (2.6.8-3-686-smp)
kernel: EIP is at cmn_err+0xc5/0xe0 [xfs]
kernel: eax: 00000000 ebx: f6858000 ecx: c02dcfbc edx: c02dcfbc
kernel: esi: f898ae28 edi: f89a00fe ebp: 00000293 esp: f6859a08
kernel: ds: 007b es: 007b ss: 0068
kernel: Process nfsd (pid: 2274, threadinfo=f6858000 task=f7a28bf0)
kernel: Stack: f898ae28 f898adef f89a00c0 00000000 f6858000 880dbb77
f898b700 dafec1a0
kernel: f8954745 00000000 f898b700 dab49800 dab49200 f7e6dc00
c192a888 880dbb77
kernel: 00000000 f777d600 880dbb77 f7e6dc00 c017db2d f777d5fc
00000000 00000000
kernel: Call Trace:
kernel: [<f8954745>] xfs_iget_core+0x565/0x6b0 [xfs]
kernel: [<c017db2d>] iget_locked+0xbd/0x100
kernel: [<f89549f2>] xfs_iget+0x162/0x1a0 [xfs]
kernel: [<f8973f83>] xfs_vget+0x63/0x100 [xfs]
kernel: [<f8987303>] vfs_vget+0x43/0x50 [xfs]
kernel: [<f8986ca1>] linvfs_get_dentry+0x51/0x90 [xfs]
kernel: [<f881e042>] find_exported_dentry+0x42/0x830 [exportfs]
kernel: [<c01631d3>] mark_buffer_dirty+0x23/0x30
kernel: [<f893624f>] xfs_bmbt_get_state+0x2f/0x40 [xfs]
kernel: [<c022ffb4>] kfree_skbmem+0x24/0x30
kernel: [<c023006d>] __kfree_skb+0xad/0x150
kernel: [<f8b8026f>] packet_rcv_spkt+0x1af/0x280 [af_packet]
kernel: [<c0245ee7>] qdisc_restart+0x17/0x230
kernel: [<c0235d91>] dev_queue_xmit+0x291/0x350
kernel: [<c0258a35>] ip_finish_output2+0xb5/0x1be
kernel: [<c0258980>] ip_finish_output2+0x0/0x1be
kernel: [<c0258980>] ip_finish_output2+0x0/0x1be
kernel: [<c0240a71>] nf_hook_slow+0xf1/0x130
kernel: [<c01ba8de>] copy_to_user+0x3e/0x50
kernel: [<c0232230>] memcpy_toiovec+0x40/0x70
kernel: [<c02328c8>] skb_copy_datagram_iovec+0x58/0x240
kernel: [<c025d5bd>] tcp_recvmsg+0x30d/0x760
kernel: [<c0258950>] dst_output+0x0/0x30
kernel: [<c022faf8>] sock_common_recvmsg+0x58/0x80
kernel: [<f881ebfa>] export_decode_fh+0x5a/0x7a [exportfs]
kernel: [<f8cb9450>] nfsd_acceptable+0x0/0x140 [nfsd]
kernel: [<f8cb979c>] fh_verify+0x20c/0x5a0 [nfsd]
kernel: [<f8cb9450>] nfsd_acceptable+0x0/0x140 [nfsd]
kernel: [<f8cbb169>] nfsd_open+0x39/0x1a0 [nfsd]
kernel: [<f8cbb94d>] nfsd_write+0x5d/0x360 [nfsd]
kernel: [<f8c2c9d7>] svc_recvfrom+0x97/0xe0 [sunrpc]
kernel: [<f8c2d6db>] svc_tcp_recvfrom+0x1eb/0x440 [sunrpc]
kernel: [<f8c30382>] svcauth_unix_accept+0x272/0x2c0 [sunrpc]
kernel: [<f8cc3038>] nfsd3_proc_write+0xb8/0x120 [nfsd]
kernel: [<f8cb7847>] nfsd_dispatch+0xd7/0x1e0 [nfsd]
kernel: [<f8cb7770>] nfsd_dispatch+0x0/0x1e0 [nfsd]
kernel: [<f8c2bec1>] svc_process+0x4b1/0x619 [sunrpc]
kernel: [<f8cb7538>] nfsd+0x248/0x480 [nfsd]
kernel: [<f8cb72f0>] nfsd+0x0/0x480 [nfsd]
kernel: [<c01042c5>] kernel_thread_helper+0x5/0x10
kernel: Code: 0f 0b 6a 00 0f ae 98 f8 83 c4 10 5b 5e 5f 5d c3 e8 96 68 91
kernel: <6>note: nfsd[2274] exited with preempt_count 1
I recon this kernel is not stable in my SMP+XFS+NFS scenario. :|
Best regards,
Laszlo Kajan
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