Hi,
I was trying out a modem on RedHat 7 running kernel 2.2.16 and when trying
to upload a file via ftp I get an OOPS.
I am using pppd version 2.4.0 on a Pentium III 450 with 128MB of RAM.
Here is the output of kysymoops:
[root@cpagano_redhat7 cpagano]# ksymoops oops.feb8.txt -m /boot/System.map
ksymoops 2.3.4 on i686 2.2.16-22. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.2.16-22/ (default)
-m /boot/System.map (specified)
Unable to handle kernel NULL pointer dereference at virtual address 00000000
current->tss.cr3 = 00101000, %cr3 = 00101000
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c01114d2>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 00000018 ebx: c0234000 ecx: 000003fd edx: c76ee000
esi: 00000000 edi: 00000d95 ebp: c0235ce4 esp: c0235cd0
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, process nr: 0, stackpage=c0235000)
Stack: c7ff62ad 00000d95 c883c20a c622b780 c7ff6000 c7235900 c8867ac3
c7ff6000
000000d9 00000001 c7ff6000 00000075 c883be97 c6522000 00000000
c7ff62ad
00000064 c7ff6000 c6754800 c622b780 c883bdb4 c7ff6000 00000021
c883e023
Call Trace: [<c883c20a>] [<c8867ac3>] [<c883be97>] [<c883bdb4>] [<c883e023>]
[<c
883e68f>] [<c0153ee5>]
[<c014fa29>] [<c0163ce9>] [<c0163ff1>] [<c016a8d1>] [<c014df94>]
[<c016ad
[<c016eb9b>] [<c016ed0a>] [<c016efa3>] [<c016174f>] [<c0161aad>]
[<c010ad
[<c011143d>] [<c01087e1>] [<c01087e9>] [<c0106000>] [<c0108804>]
[<c0109f
[<c0106000>] [<c0100175>]
Code: c7 05 00 00 00 00 00 00 00 00 8d 65 e8 5b 5e 5f 89 ec 5d c3
>>EIP; c01114d2 <schedule+26a/280> <=====
Trace; c883c20a <[ppp]ppp_async_encode+2c2/304>
Trace; c8867ac3 <[nls_cp437].data.end+1c6c/6e1a9>
Trace; c883be97 <[ppp]ppp_tty_push+d3/184>
Trace; c883bdb4 <[ppp]ppp_async_send+70/80>
Trace; c883e023 <[ppp]ppp_send_frame+257/280>
Code; c01114d2 <schedule+26a/280>
00000000 <_EIP>:
Code; c01114d2 <schedule+26a/280> <=====
0: c7 05 00 00 00 00 00 movl $0x0,0x0 <=====
Code; c01114d9 <schedule+271/280>
7: 00 00 00
Code; c01114dc <schedule+274/280>
a: 8d 65 e8 lea 0xffffffe8(%ebp),%esp
Code; c01114df <schedule+277/280>
d: 5b pop %ebx
Code; c01114e0 <schedule+278/280>
e: 5e pop %esi
Code; c01114e1 <schedule+279/280>
f: 5f pop %edi
Code; c01114e2 <schedule+27a/280>
10: 89 ec mov %ebp,%esp
Code; c01114e4 <schedule+27c/280>
12: 5d pop %ebp
Code; c01114e5 <schedule+27d/280>
13: c3 ret
Aiee, killing interrupt handler
Kernel panic: Attempted to kill the idle task!
In swapper task - not syncing
Thanks in advance,
Carlo Pagano
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