Here's another report of PPPoE oopsing with 2.4.20-pre2-ac6. Just
before it oopsed it printed this on the console:
PPPIOCDETACH file->f_count=3
Unable to handle kernel NULL pointer dereference at virtual address
000000e8 c01f19b3
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c01f19b3>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: c03f60a8 ebx: c5753940 ecx: 00000000 edx: 00000000
esi: 00000000 edi: 0000001e ebp: c742a5e0 esp: c5597edc
ds: 0018 es: 0018 ss: 0018
Process pppd (pid: 4428, stackpage=c5597000)
Stack: c742bcd4 c5597f14 0000001e bffff7d8 bffff7b0 c02918e4 c742bcd4
c5597f14
0000001e 00000002 00000002 00000004 bffff874 00000000 00000018
00000000
00671000 7465e1a8 36003068 00004018 04090000 c74e0000 00000246
c5597f6c
Call Trace: [<c02918e4>] [<c0140e18>] [<c013d460>] [<c02921e3>]
[<c0106ba3>]
Code: ff 8a e8 00 00 00 0f 94 c0 84 c0 74 09 52 e8 8e 6b 0a 00 83
>>EIP; c01f19b3 <pppoe_connect+d7/248> <=====
Trace; c02918e4 <sys_connect+58/78>
Trace; c0140e18 <fcntl_setlk+1e4/1f4>
Trace; c013d460 <do_fcntl+148/1fc>
Trace; c02921e3 <sys_socketcall+87/1bc>
Trace; c0106ba3 <system_call+33/40>
Code; c01f19b3 <pppoe_connect+d7/248>
00000000 <_EIP>:
Code; c01f19b3 <pppoe_connect+d7/248> <=====
0: ff 8a e8 00 00 00 decl 0xe8(%edx) <=====
Code; c01f19b9 <pppoe_connect+dd/248>
6: 0f 94 c0 sete %al
Code; c01f19bc <pppoe_connect+e0/248>
9: 84 c0 test %al,%al
Code; c01f19be <pppoe_connect+e2/248>
b: 74 09 je 16 <_EIP+0x16> c01f19c9
<pppoe_connect+ed/248>
Code; c01f19c0 <pppoe_connect+e4/248>
d: 52 push %edx
Code; c01f19c1 <pppoe_connect+e5/248>
e: e8 8e 6b 0a 00 call a6ba1 <_EIP+0xa6ba1> c0298554
<netdev_finish_unregister+0/9c>
Code; c01f19c6 <pppoe_connect+ea/248>
13: 83 00 00 addl $0x0,(%eax)
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