Re: [Openvortex-dev] Kernel Oops with snd-au8830 on AMD64 platform

[Toby Haynes]

Jeff Muizelaar wrote:

> Do you think you can run the oops through ksymoops? The current one
> doesn't really make much sense to me... The code section of it did not
> disassemble into anything that seemed reasonable...
>  
I can repro this Oops just by a simple "modprobe snd-au8830" so it's an 
easy problem to test.

Hmm. /proc/ksyms doesn't exist on this box and /proc/kallsyms isn't 
accepted by ksymoops. Here's the output regardless. This one is the most 
recent repro (but it looks pretty much identical).

address@hidden root]# ksymoops < snd-au8830-oops2.txt
ksymoops 2.4.9 on x86_64 2.6.8.1-12.5mdk.  Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.6.8.1-12.5mdk/ (default)
    -m /boot/System.map-2.6.8.1-12.5mdk (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Error (regular_file): read_ksyms stat /proc/ksyms failed
/usr/bin/ksymoops.real: No such file or directory
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Nov 10 08:39:08 localhost kernel: Oops: 0002 [1]
Nov 10 08:39:08 localhost kernel: CPU 0
Nov 10 08:39:08 localhost kernel: Pid: 14108, comm: modprobe Tainted: 
P   2.6.8.1-12.5mdk
Nov 10 08:39:08 localhost kernel: RIP: 0010:[_end+540456926/2132611072] 
<ffffffffa079a7de>{:snd-au8830:snd_vortex_probe+446}
Using defaults from ksymoops -t elf64-x86-64 -a i386:x86-64
Nov 10 08:39:08 localhost kernel: RIP: 0010:[<ffffffffa079a7de>] 
<ffffffffa079a7de>{:snd-au8830:snd_vortex_probe+446}
Nov 10 08:39:08 localhost kernel: RSP: 0018:000001002ce19c18  EFLAGS: 
00010216
Nov 10 08:39:08 localhost kernel: RAX: ffffff000263f000 RBX: 
0000000000000000 RCX: 000000000001ffff
Nov 10 08:39:08 localhost kernel: RDX: 0000000000000006 RSI: 
0000000000010a4f RDI: 0000000001479b30
Nov 10 08:39:08 localhost kernel: RBP: 000001000d7c0000 R08: 
0000000000000036 R09: 000001000d7c0000
Nov 10 08:39:08 localhost kernel: R10: 00000000fb03ffff R11: 
0000000000000001 R12: 00000000ffffffed
Nov 10 08:39:08 localhost kernel: R13: 000001003fed5800 R14: 
000001003fed5800 R15: 000001003fc19400
Nov 10 08:39:08 localhost kernel: FS:  0000002a958964c0(0000) 
GS:ffffffff803fe180(0000) knlGS:000000000a8dd560
Nov 10 08:39:08 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 
000000008005003b
Nov 10 08:39:08 localhost kernel: CR2: ffffff0002693018 CR3: 
0000000000101000 CR4: 00000000000006e0
Nov 10 08:39:08 localhost kernel: Stack: 00000000419219fc 
0000000003e56deb ffffffffa079f998 0000000000000212
Nov 10 08:39:08 localhost kernel:        0000000000000212 
0000000000000000 00000
000000041ed 0000000000000000
Nov 10 08:39:08 localhost kernel:        0000010036948448 ffffffff801a6039
Nov 10 08:39:08 localhost kernel: Call 
Trace:<ffffffff801a6039>{sysfs_make_dirent+41} 
<ffffffff801ddd16>{pci_device_probe+134}
Nov 10 08:39:08 localhost kernel:        
<ffffffff8021f4d7>{bus_match+71} <ffffffff8021f5fb>{driver_attach+75}
Nov 10 08:39:08 localhost kernel:        
<ffffffff8021f990>{bus_add_driver+144} 
<ffffffff8021fe92>{driver_register+50}
Nov 10 08:39:08 localhost kernel:        
<ffffffff801dda03>{pci_register_driver+99} 
<ffffffffa07a2010>{:snd-au8830:alsa_card_vortex_init+16}
Nov 10 08:39:08 localhost kernel:        
<ffffffff8014833c>{sys_init_module+5964} <ffffffff8015efdb>{__vma_link+75}
Nov 10 08:39:08 localhost kernel:        
<ffffffffa07a2000>{:snd-au8830:alsa_card_vortex_init+0}
Nov 10 08:39:08 localhost kernel:        
<ffffffff8015fe88>{do_munmap+888} <ffffffff8011045e>{system_call+126}
Nov 10 08:39:08 localhost kernel: Code: c7 80 18 40 05 00 ff ff ff ff e8 
b3 cc a3 df 48 8b 95 e8 40


>>RIP; ffffffffa079a7de <_end+2036b7de/7f1d1000>   <=====
>>RIP; ffffffffa079a7de <_end+2036b7de/7f1d1000>   <=====

Trace; ffffffff801a6039 <sysfs_make_dirent+29/b0>
Trace; ffffffff8021f4d7 <bus_match+47/90>
Trace; ffffffff8021f990 <bus_add_driver+90/130>
Trace; ffffffff801dda03 <pci_register_driver+63/a0>
Trace; ffffffff8014833c <sys_init_module+174c/1860>
Trace; ffffffffa07a2000 <_end+20373000/7f1d1000>
Trace; ffffffff8015fe88 <do_munmap+378/3b0>

Code;  ffffffffa079a7de <_end+2036b7de/7f1d1000>
0000000000000000 <_RIP>:
Code;  ffffffffa079a7de <_end+2036b7de/7f1d1000>   <=====
  0:   c7 80 18 40 05 00 ff      movl   $0xffffffff,0x54018(%rax)   <=====
Code;  ffffffffa079a7e5 <_end+2036b7e5/7f1d1000>
  7:   ff ff ff
Code;  ffffffffa079a7e8 <_end+2036b7e8/7f1d1000>
  a:   e8 b3 cc a3 df            callq  ffffffffdfa3ccc2 
<_RIP+0xffffffffdfa3ccc2>
Code;  ffffffffa079a7ed <_end+2036b7ed/7f1d1000>
  f:   48 8b 95 e8 40 00 00      mov    0x40e8(%rbp),%rdx

Nov 10 08:39:08 localhost kernel: CR2: ffffff0002693018

1 warning and 1 error issued.  Results may not be reliable.

Cheers,
Toby Haynes