nbd oops on unload.

From: Dave Jones
Date: Tue Feb 17 2004 - 17:53:09 EST


modprobe nbd ; rmmod nbd was enough to reproduce this one..
(2.6.3rc4)

Dave

nbd: registered device at major 43
Unable to handle kernel paging request at virtual address 6b6b6baf
printing eip:
c01d3206
*pde = 00000000
Oops: 0000 [#2]
CPU: 0
EIP: 0060:[<c01d3206>] Not tainted
EFLAGS: 00010202
EIP is at kobject_hotplug+0x24/0x30
eax: c02e9ff3 ebx: c36530d4 ecx: c36530d4 edx: 6b6b6b6b
esi: c1f4f190 edi: 00000000 ebp: 00000000 esp: c44c5f24
ds: 007b es: 007b ss: 0068
Process rmmod (pid: 7597, threadinfo=c44c4000 task=c40b4650)
Stack: c01d3486 c36530d4 c01d349d c3653084 c0224536 c3653084 c02276d0 c1f4f190
c7c103dc c022857a c1f4f190 c0191001 c1f4f190 c7c12990 c7c0e4a4 c7c0fd80
00000000 c031acd8 c013a805 0064626e 00000000 c2cd62d8 c2cd62d8 b80d1000
Call Trace:
[<c01d3486>] kobject_del+0xf/0x1e
[<c01d349d>] kobject_unregister+0x8/0x10
[<c0224536>] elv_unregister_queue+0xf/0x1d
[<c02276d0>] blk_unregister_queue+0x1b/0x36
[<c022857a>] unlink_gendisk+0x8/0x19
[<c0191001>] del_gendisk+0x45/0xc8
[<c7c0e4a4>] nbd_cleanup+0x26/0x55 [nbd]
[<c013a805>] sys_delete_module+0x168/0x18a
[<c014ff4d>] unmap_vma_list+0xe/0x17
[<c01503f9>] do_munmap+0x17d/0x189
[<c010b697>] syscall_call+0x7/0xb

Code: 83 7a 44 00 74 05 e9 9f fd ff ff c3 53 31 d2 89 c3 c7 40 18

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