lkml.org 
[lkml]   [2011]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: shm broken on MIPS in current -git
Manuel,

On Mon, Aug 01, 2011 at 14:51 +0200, Manuel Lauss wrote:
> CPU 0 Unable to handle kernel paging request at virtual address
> 00000000, epc == 80527c64, ra == 8024afb8
> Oops[#1]:
[...]
> epc : 80527c64 __down_write_nested+0x68/0xf0

Could you post the asm code of __down_write_nested() of your image?
What pointer is NULL? Looks like MIPS handles namespaces in usermode
helpers other way.

> ra : 8024afb8 exit_shm+0x30/0x64
> Status: 10003c02 KERNEL EXL
> Cause : 0080800c
> BadVA : 00000000
> PrId : 800c8000 (Au1300)
> Process kworker/u:0 (pid: 9, threadinfo=8fc44000, task=8fc3f520, tls=00000000)
> Stack : 14200972 d3054429 00000000 56b8e493 8060d118 00000000 8fc3f520 00000002
> 8fc2c000 8060d114 00000000 8024afb8 00000000 00000000 00000000 00000000
> 8060d0c0 00000000 8fc3f520 80128ae8 30480023 0b309f84 34ffeedb ef9e65d6
> 38019941 af430015 f6d9ebeb 00000000 00000000 00000000 8fc29ce0 8fc15300
> 00000000 00000000 00000000 00000000 00000000 00000000 00000000 80139578
> ...
> Call Trace:
> [<80527c64>] __down_write_nested+0x68/0xf0
> [<8024afb8>] exit_shm+0x30/0x64
> [<80128ae8>] do_exit+0x50c/0x664
> [<80139578>] ____call_usermodehelper+0xfc/0x118
> [<801061bc>] kernel_thread_helper+0x10/0x18

Thanks,

--
Vasiliy Kulikov
http://www.openwall.com - bringing security into open computing environments


\
 
 \ /
  Last update: 2011-08-01 15:43    [W:0.040 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site