Re: 2.4.{1,2pre1} oops in via82cxxx_audio (?)

Matthew Harrell (
Mon, 5 Feb 2001 11:02:07 -0500

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: I'm not positive that's what's causing the oops but it seems to happen only
: when I load the sound driver and when esd starts to send a noise to the device.
: The oops and config are attached below. Let me know if it's funny looking -
: I typed it in by hand after it killed the machine but it's easily reproducable.
: Also, while it doesn't seem to be deterministic it happens over 90% of the time

Just realized that some of those symbols were defined in the via82cxxx_audio
module and I needed to load it to get them recognized. As long as I don't
play any sounds the module will load fine so here is the new and improved
ksymoops output

  Matthew Harrell                          Behind every great computer sits
  Bit Twiddlers, Inc.                       a skinny little geek.     

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ksymoops 0.7c on i686 2.4.2-pre1. Options used -v /usr/src/linux/vmlinux (specified) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.4.2-pre1/ (default) -m /boot/ (specified)

Unable to handle kernel NULL pointer reference at virtual address 00000004 d883a0a0 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:<d883a0a0>] Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010206 eax: 40000100 ebx: cff5aa38 ecx: 0000000a edx: 00000000 esi: 00000000 edi: 0000000a ebp: c02b1fa0 esp: c02b1f40 ds: 0018 es: 0018 ss:0018 Process swapper (pid: 0, stackpage=c02b1000) Stack: 00001111 cff5a800 d883a15f cff5aa38 cca5da80 04000001 c010a2bf 0000000a cff5a800 c02b1fa0 00000280 c02e7b80 0000000a c02b1f98 c010a43e 0000000a c02b1fa0 cca5da80 00006f62 c02b0000 c031b820 cca5da80 0008e000 c0108f80 Call Trace: [<d883a15f>] [<c010a2bf>] [<c010a43e>] [<c0108f80>] [<c01f480a>] [<c01f4620>] [<c0107130>] [<c01071c2>] [<c0105000>] [<c0100191>] Code: 89 44 f2 04 ff 43 04 8b 53 2c 89 d0 ff 43 1c 03 43 20 89 43

>>EIP; d883a0a0 <[via82cxxx_audio]via_intr_channel+90/120> <===== Trace; d883a15f <[via82cxxx_audio]via_interrupt+2f/70> Trace; c010a2bf <handle_IRQ_event+2f/60> Trace; c010a43e <do_IRQ+6e/b0> Trace; c0108f80 <ret_from_intr+0/20> Trace; c01f480a <acpi_idle+1ea/2b0> Trace; c01f4620 <acpi_idle+0/2b0> Trace; c0107130 <default_idle+0/30> Trace; c01071c2 <cpu_idle+42/60> Trace; c0105000 <empty_bad_page+0/1000> Trace; c0100191 <L6+0/2> Code; d883a0a0 <[via82cxxx_audio]via_intr_channel+90/120> 00000000 <_EIP>: Code; d883a0a0 <[via82cxxx_audio]via_intr_channel+90/120> <===== 0: 89 44 f2 04 mov %eax,0x4(%edx,%esi,8) <===== Code; d883a0a4 <[via82cxxx_audio]via_intr_channel+94/120> 4: ff 43 04 incl 0x4(%ebx) Code; d883a0a7 <[via82cxxx_audio]via_intr_channel+97/120> 7: 8b 53 2c mov 0x2c(%ebx),%edx Code; d883a0aa <[via82cxxx_audio]via_intr_channel+9a/120> a: 89 d0 mov %edx,%eax Code; d883a0ac <[via82cxxx_audio]via_intr_channel+9c/120> c: ff 43 1c incl 0x1c(%ebx) Code; d883a0af <[via82cxxx_audio]via_intr_channel+9f/120> f: 03 43 20 add 0x20(%ebx),%eax Code; d883a0b2 <[via82cxxx_audio]via_intr_channel+a2/120> 12: 89 43 00 mov %eax,0x0(%ebx)

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