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Subjectkernel oops
Date
hello,

i am recently experiencing kernel errors with httpd process,
the software used:

apache 1.3.18 running in chroot environment,
self built kernel 2.4.10,
glibc 2.2.2, gcc version 2.96, binutils 2.10)

the problem is semi-repeatable, that is it happens almost always after a few minutes of running
that httpd, but is triggered either by running CGI scripts or trigerring apache 40x errors.

the hardware used is P200 MMX, 64 megz of ram, tx chipset

if you need any further information i will be happy to help,

below find ksymoops outputs (2 slightly different ones):

the first one:

Unable to handle kernel NULL pointer dereference at virtual address 0000000c
c011a112
*pde = 0128d067
Oops: 0000
CPU: 0
EIP: 0010:[<c011a112>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 00000000 ebx: c3462000 ecx: c37ad620 edx: c1132000
esi: c1e24000 edi: ffff0301 ebp: 0000000a esp: c1e25ee4
ds: 0018 es: 0018 ss: 0018
Process httpd (pid: 27196, stackpage=c1e25000)
Stack: 000023ad ffffffff 000023ad 00000003 00000001 bffff808 c011a74d 0000000a
c1e25f3c c3462000 00000000 005fd4a5 c1e24000 c010f160 000023ad 00000003
00000001 bffff808 c011aee9 0000000a c1e25f3c 000023ad 0000000a 00000000
Call Trace: [<c011a74d>] [<c010f160>] [<c011aee9>] [<c013dea0>] [<c0106ca3>]
Code: 8b 40 0c 8b 50 08 66 39 7a 30 75 0c 8b 41 28 39 42 28 0f 84
>>EIP; c011a112 <send_sig_info+e2/4d0> <=====
Trace; c011a74c <kill_something_info+ec/100>
Trace; c010f160 <process_timeout+0/50>
Trace; c011aee8 <sys_kill+48/60>
Trace; c013dea0 <sys_select+480/490>
Trace; c0106ca2 <system_call+32/40>
Code; c011a112 <send_sig_info+e2/4d0>
00000000 <_EIP>:
Code; c011a112 <send_sig_info+e2/4d0> <=====
0: 8b 40 0c mov 0xc(%eax),%eax <=====
Code; c011a114 <send_sig_info+e4/4d0>
3: 8b 50 08 mov 0x8(%eax),%edx
Code; c011a118 <send_sig_info+e8/4d0>
6: 66 39 7a 30 cmp %di,0x30(%edx)
Code; c011a11c <send_sig_info+ec/4d0>
a: 75 0c jne 18 <_EIP+0x18> c011a12a <send_sig_info+fa/4d0>
Code; c011a11e <send_sig_info+ee/4d0>
c: 8b 41 28 mov 0x28(%ecx),%eax
Code; c011a120 <send_sig_info+f0/4d0>
f: 39 42 28 cmp %eax,0x28(%edx)
Code; c011a124 <send_sig_info+f4/4d0>
12: 0f 84 00 00 00 00 je 18 <_EIP+0x18> c011a12a <send_sig_info+fa/4d0>
and the other one:

Unable to handle kernel NULL pointer dereference at virtual address 0000000c
c011a112
*pde = 02410067
Oops: 0000
CPU: 0
EIP: 0010:[<c011a112>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 00000000 ebx: c3850000 ecx: c37ad620 edx: c1132000
esi: c2412000 edi: ffff0301 ebp: 0000000a esp: c2413ee4
ds: 0018 es: 0018 ss: 0018
Process httpd (pid: 4325, stackpage=c2413000)
Stack: 00002a7c ffffffff 00002a7c 00000003 00000001 bffffc48 c011a74d 0000000a
c2413f3c c3850000 00000000 0001c089 c2412000 c010f160 00002a7c 00000003
00000001 bffffc48 c011aee9 0000000a c2413f3c 00002a7c 0000000a 00000000
Call Trace: [<c011a74d>] [<c010f160>] [<c011aee9>] [<c013dea0>] [<c0106ca3>]
Code: 8b 40 0c 8b 50 08 66 39 7a 30 75 0c 8b 41 28 39 42 28 0f 84
>>EIP; c011a112 <send_sig_info+e2/4d0> <=====
Trace; c011a74c <kill_something_info+ec/100>
Trace; c010f160 <process_timeout+0/50>
Trace; c011aee8 <sys_kill+48/60>
Trace; c013dea0 <sys_select+480/490>
Trace; c0106ca2 <system_call+32/40>
Code; c011a112 <send_sig_info+e2/4d0>
00000000 <_EIP>:
Code; c011a112 <send_sig_info+e2/4d0> <=====
0: 8b 40 0c mov 0xc(%eax),%eax <=====
Code; c011a114 <send_sig_info+e4/4d0>
3: 8b 50 08 mov 0x8(%eax),%edx
Code; c011a118 <send_sig_info+e8/4d0>
6: 66 39 7a 30 cmp %di,0x30(%edx)
Code; c011a11c <send_sig_info+ec/4d0>
a: 75 0c jne 18 <_EIP+0x18> c011a12a <send_sig_info+fa/4d0>
Code; c011a11e <send_sig_info+ee/4d0>
c: 8b 41 28 mov 0x28(%ecx),%eax
Code; c011a120 <send_sig_info+f0/4d0>
f: 39 42 28 cmp %eax,0x28(%edx)
Code; c011a124 <send_sig_info+f4/4d0>
12: 0f 84 00 00 00 00 je 18 <_EIP+0x18> c011a12a <send_sig_info+fa/4d0>
best regards,
terry
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