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
