Jumping on board...
[ 31.655659] svc: failed to register lockdv1 RPC service (errno 97).
[34464.384638] svc: failed to register lockdv1 RPC service (errno 97).
[34814.840760] svc: failed to register lockdv1 RPC service (errno 97).
[35340.367124] BUG: Dentry ffff88003a3220c0{i=54443,n=/} still in use (1)
[unmount of autofs autofs]
[35340.367151] ------------[ cut here ]------------
[35340.367191] kernel BUG at /build/buildd/linux-2.6.38/fs/dcache.c:947!
[35340.367230] invalid opcode: 0000 [#1] SMP
[35340.367262] last sysfs file:
/sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
[35340.367308] CPU 1
[35340.367323] Modules linked in: nfs lockd fscache nfs_acl auth_rpcgss sunrpc
binfmt_misc parport_pc ppdev autofs4 snd_emu10k1_synth snd_emux_synth
snd_seq_virmidi snd_seq_midi_emul snd_emu10k1 snd_ac97_codec ac97_bus snd_pcm
snd_page_alloc snd_util_mem snd_hwdep snd_seq_midi snd_rawmidi i915
snd_seq_midi_event snd_seq snd_timer snd_seq_device drm_kms_helper drm snd
emu10k1_gp gameport i2c_algo_bit soundcore video lp parport raid10 raid456
async_pq async_xor xor async_memcpy async_raid6_recov usbhid hid firewire_ohci
firewire_core r8169 crc_itu_t floppy raid6_pq async_tx raid1 raid0 multipath
linear
[35340.367792]
[35340.367804] Pid: 3387, comm: automount Not tainted 2.6.38-8-generic
#42-Ubuntu Gigabyte Technology Co., Ltd. EG41M-S2H/EG41M-S2H
[35340.367884] RIP: 0010:[<ffffffff81179945>] [<ffffffff81179945>]
shrink_dcache_for_umount_subtree+0x285/0x290
[35340.367949] RSP: 0018:ffff880021489de8 EFLAGS: 00010296
[35340.367981] RAX: 000000000000006b RBX: ffff88003a32211c RCX: 000000000000009f
[35340.368023] RDX: 0000000000000000 RSI: 0000000000000086 RDI: 0000000000000246
[35340.368065] RBP: ffff880021489e28 R08: 0000000000000033 R09: 000000000000afca
[35340.368106] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88003a32211c
[35340.368148] R13: ffff88003a3220c0 R14: ffff88003a322160 R15: 00007fcc05885f30
[35340.368190] FS: 00007fcc01481700(0000) GS:ffff88007da80000(0000)
knlGS:0000000000000000
[35340.368238] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[35340.368272] CR2: 00007fcc0147aa08 CR3: 0000000065003000 CR4: 00000000000406e0
[35340.368313] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[35340.368355] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[35340.368397] Process automount (pid: 3387, threadinfo ffff880021488000, task
ffff8800538a96e0)
[35340.368446] Stack:
[35340.370450] ffff8800599cde58 ffffffff81177156 0000000000000000
ffff8800599cdc00
[35340.372563] ffff88003a32211c ffff88003a3220c0 00007fcc05889380
00007fcc05885f30
[35340.374614] ffff880021489e58 ffffffff8117c2a1 ffff880021489e48
ffff8800599cdc00
[35340.376664] Call Trace:
[35340.377052] [<ffffffff81177156>] ? pollwake+0x56/0x60
[35340.377052] [<ffffffff8117c2a1>] shrink_dcache_for_umount+0x51/0x90
[35340.377052] [<ffffffff81166bfc>] generic_shutdown_super+0x2c/0x100
[35340.377052] [<ffffffff81166d66>] kill_anon_super+0x16/0x60
[35340.377052] [<ffffffff81166dd7>] kill_litter_super+0x27/0x30
[35340.377052] [<ffffffffa02204d8>] autofs4_kill_sb+0x48/0x60 [autofs4]
[35340.377052] [<ffffffff811671d5>] deactivate_locked_super+0x45/0x70
[35340.377052] [<ffffffff81167e5a>] deactivate_super+0x4a/0x70
[35340.377052] [<ffffffff81183254>] mntput_no_expire+0xa4/0xf0
[35340.377052] [<ffffffff811842e0>] sys_umount+0x60/0xd0
[35340.377052] [<ffffffff8100c002>] system_call_fastpath+0x16/0x1b
[35340.377052] Code: 8b 40 28 4c 8b 08 49 8b 45 30 48 85 c0 74 07 48 8b 90 a8
00 00 00 48 89 34 24 48 c7 c7 50 6c 7e 81 4c 89 ee 31 c0 e8 94 66 44 00 <0f> 0b
0f 0b 0f 1f 80 00 00 00 00 55 48 89 e5 48 83 ec 20 48 89
[35340.377052] RIP [<ffffffff81179945>]
shrink_dcache_for_umount_subtree+0x285/0x290
[35340.377052] RSP <ffff880021489de8>
[35340.596374] ---[ end trace 425254968f106f06 ]---
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https://bugs.launchpad.net/bugs/742084
Title:
kernel BUG on network mounts (GVFS/SSH and AutoFS/NFS)
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