lkml.org 
[lkml]   [2004]   [Aug]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject2.6.8.1: kernel panic rmmod'ing apm
Linux littleblue 2.6.8.1 #81 Wed Aug 18 17:13:39 PDT 2004 i686 unknown 
unknown GNU/Linux

Gnu C 3.3.4
Gnu make 3.80
binutils 2.15.90.0.3
util-linux 2.12a
mount 2.12a
module-init-tools 3.0
e2fsprogs 1.35
jfsutils 1.1.6
xfsprogs 2.6.13
pcmcia-cs 3.2.7
quota-tools 3.12.
PPP 2.4.2
nfs-utils 1.0.6
Linux C Library 2.3.2
Dynamic linker (ldd) 2.3.2
Linux C++ Library 5.0.6
Procps 3.2.1
Net-tools 1.60
Kbd 1.12
Sh-utils 5.2.1
Modules Loaded snd_cs4236 snd_opl3_lib snd_hwdep snd_cs4236_lib
snd_mpu401_uart snd_rawmidi snd_cs4231_lib nfsd exportfs intel_agp
uhci_hcd serial_cs 3c574_cs ds yenta_socket pcmcia_core agpgart

-----------------------------
Hello,
When rmmod'ing apm, I get a kernel panic. However, the machine
continues to function properly, AFAIK. Here's the dmesg:

[snip]
Unable to handle kernel paging request at virtual address d2d9f211
printing eip:
d2d9f211
*pde = 01357067
*pte = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: snd_cs4236 snd_opl3_lib snd_hwdep snd_cs4236_lib
snd_mpu401_uart snd_rawmidi snd_cs4231_lib nfsd exportfs intel_agp
uhci_hcd serial_cs 3c574_cs ds yenta_socket pcmcia_core agpgart
CPU: 0
EIP: 0060:[<d2d9f211>] Not tainted
EFLAGS: 00010246 (2.6.8.1)
EIP is at 0xd2d9f211
eax: 00000000 ebx: 00000000 ecx: ffffffff edx: c03c0000
esi: 00011ff9 edi: 00000202 ebp: 00000001 esp: c03c0f84
ds: 007b es: 007b ss: 0068
Process swapper (pid: 0, threadinfo=c03c0000 task=c033fa40)
Stack: 00005305 00000000 00000000 00090000 c03e0000 c03c0000 00011ff9
0000000a
00000001 d2d9f373 00005305 00000000 00000000 c03c0fbc 00005305
d2d9f4ab
c03c0000 00099100 c03e0120 00423007 c0102164 c03c0000 c03c1723
c033fa40
Call Trace:
[<c0102164>] cpu_idle+0x34/0x40
[<c03c1723>] start_kernel+0x163/0x180
[<c03c1340>] unknown_bootoption+0x0/0x160
Code: Bad EIP value.
<0>Kernel panic: Attempted to kill the idle task!
In idle task - not syncing
[END]

After that, the module is gone, and everything works fine. I just tried
inserting and removeing it subsequent times, and it works with no errors
(so far). I only rmmod when apm is used by nothing.

The only reason I'm messing around with the apm module is that Loki's UT
seems to (sometimes) run much too fast with APM support in kernel, and
rmmod'ing it out seems to do the trick. This is probably indicitive of
another problem, though my system seems pretty stable (other than that
kernel panic...).

All said, this doesn't bother me, as my system stays up.

-Brannon Klopfer
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:05    [from the cache]
©2003-2011 Jasper Spaans