2.6.22-rc2-mm1 SLUB oops

2.6.22-rc2-mm1 SLUB oops

[young dave]

Hi,

When I exec aumix from console, the kernel oops seems in modprobe
process, and after a while , system hanged.

BUG: unable to handle kernel paging request at virtual address 646c6f68
 printing eip:
c016531e
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: cifs snd_hda_intel snd_pcm snd_timer snd_page_alloc snd sound
core ipv6 capability commoncap e100 mii agpgart pcspkr psmouse
CPU:    0
EIP:    0060:[<c016531e>]    Not tainted VLI
EFLAGS: 00010002   (2.6.22-rc2-mm1 #2)
EIP is at __kmalloc_track_caller+0x3e/0x80
eax: 00000000   ebx: c054dc24   ecx: 646c6f68   edx: c1050960
esi: 00000286   edi: 000000d0   ebp: c013d8c5   esp: c30a1e98
ds: 007b   es: 007b   fs: 0000  gs: 0033  ss: 0068
Process modprobe (pid: 1741, ti=c30a0000 task=c1f0ef40 task.ti=c30a0000)
Stack: c013d866 00000282 f888803e c304194c f8888044 00000006 c0150505 f8840b0c
       c015049a 0000000f c304194c 00000258 c3041800 c013d8c5 c0521f10 00000000
       f8840b00 00000000 c3041a34 f8888080 f8887fa4 00000019 f8840b00 f8885000
Call Trace:
 [<c013d866>] add_sect_attrs+0x66/0x150
 [<c0150505>] kstrdup+0x35/0x70
 [<c015049a>] __kzalloc+0x1a/0x50
 [<c013d8c5>] add_sect_attrs+0xc5/0x150
 [<c013f04e>] load_module+0xa6e/0xc00
 [<c013f244>] sys_init_module+0x44/0x140
 [<c0104098>] syscall_call+0x7/0xb
 [<c0440000>] packet_dev_mc+0x10/0x80
 =======================
Code: 89 74 24 0c e8 24 f8 ff ff 89 c3 31 c0 85 db 74 24 9c 5e fa 8b 93 88 00 00
 00 85 d2 74 2b 8b 42 0c 85 c0 74 24 89 c1 0f b7 42 0a <8b> 04 81 89 42 0c 56 9d
 89 c8 8b 5c 24 08 8b 74 24 0c 8b 7c 24
EIP: [<c016531e>] __kmalloc_track_caller+0x3e/0x80 SS:ESP 0068:c30a1e98

Regards
dave

Re: 2.6.22-rc2-mm1 SLUB oops

[Christoph Lameter]

On Thu, 24 May 2007, young dave wrote:

> When I exec aumix from console, the kernel oops seems in modprobe
> process, and after a while , system hanged.

Reboot with slub_debug as a kernel parameter please.

Re: 2.6.22-rc2-mm1 SLUB oops

[young dave]

Hi,

> Reboot with slub_debug as a kernel parameter please.

Yes, I will enable slub_debug as boot parameter, but it doesn't occur
definitely.

I will report the info if it arrive again ASAP.

Regards
dave

Re: 2.6.22-rc2-mm1 SLUB oops

[Christoph Lameter]

On Fri, 25 May 2007, young dave wrote:

> > Reboot with slub_debug as a kernel parameter please.
> 
> Yes, I will enable slub_debug as boot parameter, but it doesn't occur
> definitely.
> 
> I will report the info if it arrive again ASAP.

Thank you. This looks like something overwrote a slab object after it was 
freed.