I got the following oops with kernel 2.4.8-pre5. bh becomes NULL in
sync_old_buffers() but the code tries to dereference it anyway.
Unable to handle kernel NULL pointer dereference at virtual address 0000001c
c0132ed7
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c0132ed7>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: 00016975 ebx: c5fec550 ecx: 00000000 edx: 00000000
esi: ffffffff edi: fff9ffff ebp: c5fec000 esp: c5fedfc4
ds: 0018 es: 0018 ss: 0018
Process kupdated (pid: 7, stackpage=c5fed000)
Stack: c5fec550 c5fec550 ffffffff c5fec000 c013317c 0008e000 c5fec000 00010f00
c11e1fb0 c0105000 0008e000 c01054f6 c0231cf0 c0133090 c0223fd8
Call Trace: [<c013317c>] [<c0105000>] [<c01054f6>] [<c0133090>]
Code: 3b 42 1c 0f 89 e0 ff ff ff 81 3d a0 b3 21 c0 a0 b3 21 c0 74
>>EIP; c0132ed7 <sync_old_buffers+27/50> <=====
Trace; c013317c <kupdate+ec/f0>
Trace; c0105000 <_stext+0/0>
Trace; c01054f6 <kernel_thread+26/30>
Trace; c0133090 <kupdate+0/f0>
Code; c0132ed7 <sync_old_buffers+27/50>
00000000 <_EIP>:
Code; c0132ed7 <sync_old_buffers+27/50> <=====
0: 3b 42 1c cmp 0x1c(%edx),%eax <=====
Code; c0132eda <sync_old_buffers+2a/50>
3: 0f 89 e0 ff ff ff jns ffffffe9 <_EIP+0xffffffe9> c0132ec0 <sync_old_buffers+10/50>
Code; c0132ee0 <sync_old_buffers+30/50>
9: 81 3d a0 b3 21 c0 a0 cmpl $0xc021b3a0,0xc021b3a0
Code; c0132ee7 <sync_old_buffers+37/50>
10: b3 21 c0
Code; c0132eea <sync_old_buffers+3a/50>
13: 74 00 je 15 <_EIP+0x15> c0132eec <sync_old_buffers+3c/50>
-- Peter Österlund peter.osterlund@mailbox.swipnet.se Sköndalsvägen 35 http://home1.swipnet.se/~w-15919 S-128 66 Sköndal +46 8 942647 Sweden- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Aug 07 2001 - 21:00:47 EST