Opps in RedHat 6.2 kernel 2.2.14-5.0

From: Gregory Maxwell (greg@linuxpower.cx)
Date: Thu Apr 27 2000 - 10:11:39 EST


Saw a nonfatal opps on a RedHat 6.2 boxen.

I don't know what it was doing at the time, and it hasn't done it since.

Ksymopps output if anyone cares:

Unable to handle kernel NULL pointer dereference at virtual address
00000002
current->tss.cr3 = 004c9000, %cr3 = 004c9000
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c010f4bc>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: 00000002 ebx: c1314000 ecx: c010f4bc edx: 00000018
esi: 00000000 edi: 40013a58 ebp: 40013a58 esp: c1315c0c
ds: 0018 es: 0018 ss: 0018
Process cpp (pid: 15548, process nr: 47, stackpage=c1315000)
Stack: 00000002 000005a8 0000016a 0000016a 00000000 40013a58 40013a58
00000000
       00000018 00000018 ffffffff c01db2b3 00000010 00010246 c1a33a00
00013000
       c1315db0 c1314000 c0134060 40013a58 000005a8 c01345e1 40013a58
0806565c
Call Trace: [<c01db2b3>] [<c0134060>] [<c01345e1>] [<c01350bb>]
[<c017c6a5>] [<c01e541c>] [<c012bb96>]
       [<c012c2e7>] [<c012c53f>] [<c012c561>] [<c0108f47>] [<c010a020>]
Code: 20 18 26 c0 0f 85 9a 01 00 00 81 fa 00 92 21 c0 0f 84 8e 01

>>EIP; c010f4bc <do_page_fault+20/384> <=====
Trace; c01db2b3 <clear_user+37/48>
Trace; c0134060 <padzero+1c/20>
Trace; c01345e1 <load_elf_interp+24d/2c4>
Trace; c01350bb <load_elf_binary+95b/d98>
Trace; c017c6a5 <end_that_request_first+79/b8>
Trace; c01e541c <cprt+6fc/5bc0>
Trace; c012bb96 <read_exec+c2/13c>
Trace; c012c2e7 <search_binary_handler+3b/114>
Trace; c012c53f <do_execve+17f/1e0>
Trace; c012c561 <do_execve+1a1/1e0>
Trace; c0108f47 <sys_execve+2f/58>
Trace; c010a020 <system_call+34/38>
Code; c010f4bc <do_page_fault+20/384>
00000000 <_EIP>:
Code; c010f4bc <do_page_fault+20/384> <=====
   0: 20 18 and %bl,(%eax) <=====
Code; c010f4be <do_page_fault+22/384>
   2: 26 c0 0f 85 rorb $0x85,%es:(%edi)
Code; c010f4c2 <do_page_fault+26/384>
   6: 9a 01 00 00 81 fa 00 lcall $0xfa,$0x81000001
Code; c010f4c9 <do_page_fault+2d/384>
   d: 92 xchg %eax,%edx
Code; c010f4ca <do_page_fault+2e/384>
   e: 21 c0 and %eax,%eax
Code; c010f4cc <do_page_fault+30/384>
  10: 0f 84 8e 01 00 00 je 1a4 <_EIP+0x1a4> c010f660 <do_page_fault+1c4/384>

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