2.3.39 TCP Oops

From: Simon Kirby (sim@stormix.com)
Date: Wed Jan 12 2000 - 16:34:50 EST


Hmm, I just received the following oops on 2.3.39 after trying to connect
to ftp.kernel.org with lftp and then ncftp and receiving "connection
refused" a few times. I've never seen this before. This is a dual
processor box.

After the Oops happened I couldn't do anything at all (no sysrq or
console switching).

Unable to handle kernel NULL pointer dereference at virtual address 00000060
 printing eip:
c01b01a0
*pde = 00000000
Oops: 0000
CPU: 1
EIP: 0010:[<c01b01a0>]
EFLAGS: 00010206
eax: 000005a8 ebx: 00000000 ecx: 000005a8 edx: 000005dc
esi: 000005a8 edi: c1438db0 ebp: c1438cc0 esp: c02b5f40
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c02b5000)
Stack: c1438cc0 c1438e34 c01b1ddd c1438cc0 00000000 c1438cc0 c01b1bd0 00000000
       c02b5fa4 000005a8 c01279ff c1438cc0 00000001 c033aa60 00000001 c02b5fa4
       00000000 c0124359 c02e1800 c028f568 00000000 c010df86 c0108d9c c02b4000
Call Trace: [<c01b1ddd>] [<c01b1bd0>] [<c01279ff>] [<c0124359>] [<c010df86>] [<c0108d9c>] [<c0105000>]
       [<c010c00c>] [<c0108d9c>] [<c0105000>] [<c0108dc1>] [<c0108e01>] [<c01001c0>]
Code: 39 73 60 76 1e 56 53 55 e8 57 f8 ff ff 83 c4 0c 85 c0 74 0c

>>EIP; c01b01a0 <tcp_retransmit_skb+64/190> <=====
Trace; c01b1ddd <tcp_retransmit_timer+20d/2a0>
Trace; c01b1bd0 <tcp_retransmit_timer+0/2a0>
Trace; c01279ff <timer_bh+3e7/4bc>
Trace; c0124359 <do_bottom_half+9d/c0>
Trace; c010df86 <do_IRQ+20a/218>
Trace; c0108d9c <default_idle+0/28>
Trace; c0105000 <empty_bad_page+0/1000>
Trace; c010c00c <ret_from_intr+0/20>
Trace; c0108d9c <default_idle+0/28>
Trace; c0105000 <empty_bad_page+0/1000>
Trace; c0108dc1 <default_idle+25/28>
Trace; c0108e01 <cpu_idle+3d/4c>
Trace; c01001c0 <L6+0/2>
Code; c01b01a0 <tcp_retransmit_skb+64/190>
00000000 <_EIP>:
Code; c01b01a0 <tcp_retransmit_skb+64/190> <=====
   0: 39 73 60 cmp %esi,0x60(%ebx) <=====
Code; c01b01a3 <tcp_retransmit_skb+67/190>
   3: 76 1e jbe 23 <_EIP+0x23> c01b01c3 <tcp_retransmit_skb+87/190>
Code; c01b01a5 <tcp_retransmit_skb+69/190>
   5: 56 push %esi
Code; c01b01a6 <tcp_retransmit_skb+6a/190>
   6: 53 push %ebx
Code; c01b01a7 <tcp_retransmit_skb+6b/190>
   7: 55 push %ebp
Code; c01b01a8 <tcp_retransmit_skb+6c/190>
   8: e8 57 f8 ff ff call fffff864 <_EIP+0xfffff864> c01afa04 <tcp_fragment+0/168>
Code; c01b01ad <tcp_retransmit_skb+71/190>
   d: 83 c4 0c add $0xc,%esp
Code; c01b01b0 <tcp_retransmit_skb+74/190>
  10: 85 c0 test %eax,%eax
Code; c01b01b2 <tcp_retransmit_skb+76/190>
  12: 74 0c je 20 <_EIP+0x20> c01b01c0 <tcp_retransmit_skb+84/190>

Simon-

[ Stormix Technologies Inc. ][ NetNation Communcations Inc. ]
[ sim@stormix.com ][ sim@netnation.com ]
[ Opinions expressed are not necessarily those of my employers. ]
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