IPX oopsie!

Joseph Gooch (mrwizard@psu.edu)
Thu, 28 Jan 1999 10:40:15 -0500


I got an oops today on 2.2.0 (with ipx code straight from
linux-2.2.0.tar.gz, i.e. no patches) Address questions to me as i'm not on
the list.

I wasn't really doing anything special at the time. There's a lot of ipx
traffic on the network, though.

Unable to handle kernel NULL pointer dereference at virtual address 00000004
current->tss.cr3 = 0121e000, %cr3 = 0121e000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c2834363>]
EFLAGS: 00010246
eax: c2834320 ebx: c1221f08 ecx: c10bdf14 edx: 00000000
esi: c1299400 edi: 00000000 ebp: c1221eec esp: c1221e54
ds: 0018 es: 0018 ss: 0018
Process nwserv (pid: 347, process nr: 22, stackpage=c1221000)
Stack: c2834320 c10bdf14 0000009f 00000000 c12317c4 00000002 c076ce7c
c0140e37
c12317c4 c05fcf00 c014f978 c10bdf14 c1221eec 0000000a c1221eac
c1221f08
c10bdf14 00000000 00000010 c1221eac c2834320 c1221eac 0000015b
00000000
Call Trace: [<c2834320>] [<c0140e37>] [<c014f978>] [<c2834320>] [<c01504ff>]
[<c012bfaa>] [<c0115454>]
[<c0150caf>] [<c0107b04>]
Code: 8b 42 04 89 44 24 18 0f b7 42 08 66 89 44 24 1c 6a 10 8d 44

>>EIP: c2834363 <ipx_sendmsg+43/f8>
Trace: c2834320 <ipx_sendmsg+0/f8>
Trace: c0140e37 <ext2_getblk+187/224>
Trace: c014f978 <sock_sendmsg+84/a8>
Trace: c2834320 <ipx_sendmsg+0/f8>
Trace: c01504ff <sys_sendto+c7/ec>
Trace: c012bfaa <sys_select+52a/538>
Trace: c0115454 <do_setitimer+158/1b0>
Trace: c0150caf <sys_socketcall+12f/1dc>
Code: c2834363 <ipx_sendmsg+43/f8> 00000000 <_EIP>:
Code: c2834363 <ipx_sendmsg+43/f8> 0: 8b 42 04 movl
0x4(%edx),%eax
Code: c2834366 <ipx_sendmsg+46/f8> 3: 89 44 24 18 movl
%eax,0x18(%esp,1)
Code: c283436a <ipx_sendmsg+4a/f8> 7: 0f b7 42 08
movzwl 0x8(%edx),%eax
Code: c283436e <ipx_sendmsg+4e/f8> b: 66 89 44 24 1c movw
%ax,0x1c(%esp,1)
Code: c2834373 <ipx_sendmsg+53/f8> 10: 6a 10
pushl $0x10
Code: c2834375 <ipx_sendmsg+55/f8> 12: 8d 44 00 00 leal
0x0(%eax,%eax,1),%eax

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