StackTrace:
[98518.092253] nbd0: p1 p2
[98518.199106] nbd0: NBD_DISCONNECT
[98522.352896] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[98522.352896] IP: [<ffffffff804148d3>] unix_stream_recvmsg+0x25e/0x557
[98522.352896] PGD 6be05d067 PUD 8239ee067 PMD 0
[98522.352896] Oops: 0002 [1] SMP
[98522.352896] CPU 7
[98522.352896] Modules linked in: tun 8021q bridge vboxdrv ipv6 xfs fuse
nbd loop snd_pcm snd_timer snd soundcore snd_page_alloc joydev i2c_i801
pcspkr i2c_core psmouse rng_core serio_raw iTCO_wdt container button
shpchp pci_hotplug evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot
dm_mod ide_cd_mod cdrom usbhid hid ff_memless piix ide_pci_generic
ide_core sd_mod floppy ata_generic libata dock ehci_hcd uhci_hcd igb
e1000e 3w_9xxx scsi_mod thermal processor fan thermal_sys
[98522.352896] Pid: 15921, comm: VBoxMount.bin Not tainted
2.6.26-1-amd64 #1
[98522.352896] RIP: 0010:[<ffffffff804148d3>] [<ffffffff804148d3>]
unix_stream_recvmsg+0x25e/0x557
[98522.352896] RSP: 0018:ffff810826563778 EFLAGS: 00010246
[98522.352896] RAX: 0000000000000000 RBX: ffff8108296c0e9c RCX:
ffff81082ce18000
[98522.352896] RDX: 0000000000004101 RSI: 0000000000000246 RDI:
ffff8108296c0e9c
[98522.352896] RBP: 0000000000000000 R08: ffff810826562000 R09:
000000000000b58d
[98522.352896] R10: ffff8100010828f0 R11: 0000000000000007 R12:
ffff8108296c0c00
[98522.352896] R13: ffff8108296c0ca8 R14: ffff810826563b08 R15:
0000000000000001
[98522.352896] FS: 0000000041c6b950(0063) GS:ffff81082cd9e5c0(0000)
knlGS:0000000000000000
[98522.352896] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[98522.352896] CR2: 0000000000000008 CR3: 000000080b96c000 CR4:
00000000000006e0
[98522.352896] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[98522.352896] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[98522.352896] Process VBoxMount.bin (pid: 15921, threadinfo
ffff810826562000, task ffff810828e1e7d0)
[98522.352896] Stack: 0000000000000000 0000000000000000
0000000000000010 ffff81082c933800
[98522.352896] ffff8108296c0e9c 0000000000000000 0000000000000000
ffffffa100000000
[98522.352896] 7fffffffffffffff ffff810826563968 0000000000000000
ffff810828e1e7d0
[98522.352896] Call Trace:
[98522.352896] [<ffffffff80246021>] autoremove_wake_function+0x0/0x2e
[98522.352896] [<ffffffff803af9b0>] sock_recvmsg+0xf0/0x10f
[98522.352896] [<ffffffff8024aab6>] getnstimeofday+0x39/0x98
[98522.352896] [<ffffffff80246021>] autoremove_wake_function+0x0/0x2e
[98522.352896] [<ffffffff80248bef>] ktime_get+0xc/0x41
[98522.352896] [<ffffffff8022904d>] hrtick_start_fair+0xfb/0x144
[98522.352896] [<ffffffff8021a45e>] apic_wait_icr_idle+0xe/0x15
[98522.352896] [<ffffffff8021a45e>] apic_wait_icr_idle+0xe/0x15
[98522.352896] [<ffffffff8022c184>] try_to_wake_up+0x118/0x129
[98522.352896] [<ffffffff803b0fbd>] kernel_recvmsg+0x32/0x44
[98522.352896] [<ffffffffa02243df>] :nbd:sock_xmit+0x242/0x2a4
[98522.352896] [<ffffffff8022ad5c>] __wake_up+0x38/0x4f
[98522.352896] [<ffffffff80245ffa>] __wake_up_bit+0x28/0x2d
[98522.352896] [<ffffffff803646b7>] mix_pool_bytes_extract+0x5c/0x155
[98522.352896] [<ffffffff8030c5bb>] freed_request+0x24/0x44
[98522.352896] [<ffffffff8030c87e>] __blk_end_request+0x39/0x41
[98522.352896] [<ffffffffa0224d77>] :nbd:nbd_ioctl+0x3fb/0x814
[98522.352896] [<ffffffff8022f012>] hrtick_set+0x88/0xf7
[98522.352896] [<ffffffff8042848c>] thread_return+0x6b/0xac
[98522.352896] [<ffffffff8024f25a>] get_futex_value_locked+0x1d/0x38
[98522.352896] [<ffffffff8024f61f>] futex_wait+0x373/0x394
[98522.352896] [<ffffffff80319c09>] __next_cpu+0x19/0x26
[98522.352896] [<ffffffff8027c8ad>] zone_statistics+0x3a/0x8e
[98522.352896] [<ffffffff8027625b>] get_page_from_freelist+0x45a/0x5ff
[98522.352896] [<ffffffff80270fba>] find_lock_page+0x1f/0x8a
[98522.352896] [<ffffffff802f1e9d>] dummy_file_ioctl+0x0/0x3
[98522.352896] [<ffffffff803107ed>] blkdev_driver_ioctl+0x5d/0x72
[98522.352896] [<ffffffff80310e36>] blkdev_ioctl+0x634/0x692
[98522.352896] [<ffffffff80281613>] handle_mm_fault+0x3f4/0x867
[98522.352896] [<ffffffff802504eb>] do_futex+0x81/0x783
[98522.352896] [<ffffffff802be746>] block_ioctl+0x1b/0x1f
[98522.352896] [<ffffffff802a6435>] vfs_ioctl+0x21/0x6b
[98522.352896] [<ffffffff802a66c7>] do_vfs_ioctl+0x248/0x261
[98522.352896] [<ffffffff802a6731>] sys_ioctl+0x51/0x70
[98522.352896] [<ffffffff8020be9a>] system_call_after_swapgs+0x8a/0x8f
[98522.352896]
[98522.352896]
[98522.352896] Code: 9c 02 00 00 41 fe 84 24 9c 02 00 00 48 8b 7c 24 40
e8 07 3e 01 00 48 89 df 48 89 44 24 40 e8 47 4f 01 00 49 8b 84 24 e0 01
00 00 <f0> 0f ba 70 08 01 e9 64 ff ff ff 49 8b 7c 24 70 48 8d 74 24 50
[98522.352896] RIP [<ffffffff804148d3>] unix_stream_recvmsg+0x25e/0x557
[98522.352896] RSP <ffff810826563778>
[98522.352896] CR2: 0000000000000008
[98522.352896] ---[ end trace 999b035b6766f164 ]---
Should be fixed in rev 18.