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SubjectEIP in fib_release_info (2.6.9-ac4)
This happened after I added a reject route and tried to remove it
later on:
% route add 172.21.11.150 reject
...
% route del 172.21.11.150 reject
Segmentation fault

After a while, this happened (and ifconfig etc. did all hang):

Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c0302f1c
*pde = 00000000
Oops: 0002 [#1]
SMP
Modules linked in: ipt_limit psmouse ipt_state iptable_filter ip_tables ip_conntrack_ftp ip_conntrack tg3 rtc
CPU: 0
EIP: 0060:[<c0302f1c>] Not tainted VLI
EFLAGS: 00010246 (2.6.9-ac4)
EIP is at fib_release_info+0x73/0xb9
eax: 00000000 ebx: f7d80a80 ecx: f7d80ae0 edx: 00000000
esi: f7d80ae4 edi: f75e51c8 ebp: 00000000 esp: d1e60e50
ds: 007b es: 007b ss: 0068
Process route (pid: 7726, threadinfo=d1e60000 task=f5f476b0)
Stack: f75e4230 00000001 c0305015 00000020 000000fe d1e60ea0 00000000 f7d8e5e0
00000020 f75e51c0 d1e60f20 c2176180 960b15ac c2176180 fffffffd d1e60f20
d1e60ea0 c0302737 d1e60ea0 00000000 0000001c 00000019 00000000 00000000
Call Trace:
[<c0305015>] fn_hash_delete+0x1c2/0x202
[<c0302737>] ip_rt_ioctl+0x163/0x165
[<c02bba87>] sock_map_fd+0x117/0x164
[<c02fdeca>] inet_ioctl+0xb8/0xe7
[<c02bc495>] sock_ioctl+0x1d8/0x297
[<c014fba7>] fget+0x49/0x5e
[<c015fbc3>] sys_ioctl+0x170/0x28d
[<c0103d2b>] syscall_call+0x7/0xb
Code: 8d 4b 08 8b 51 04 85 c0 89 02 74 03 89 50 04 c7 43 08 00 01 10 00 c7 41 04 00 02 20 00 8d 4b 60 8d 73 64 8b 41 04 8b 56 04 85 c0 <89> 02 74 03 89 50 04 c7 41 04 00 01 10 00 c7 46 04 00 02 20 00

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