Hi Manuel, On Mon, Aug 01, 2011 at 14:51 +0200, Manuel Lauss wrote: > Commits 5774ed014f02120db9a6945a1ecebeb97c2acccb > (shm: handle separate PID namespaces case) > and 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d > (shm: optimize locking and ipc_namespace getting) > break on my MIPS systems. Can you please identify what commit breaks the system? > The following oops is > printed on boot, and as a result, more than 300 zombie kworker > kernel processes are resident. I don't see this oops on x86 or x64. Do you have the same configs for x86 and mips? > ra points to the down_write() in ipc/shm.c::exit_shm() > > CPU 0 Unable to handle kernel paging request at virtual address > 00000000, epc == 80527c64, ra == 8024afb8 > Oops[#1]: > Cpu 0 > $ 0 : 00000000 10003c00 00000000 10003c01 > $ 4 : 8060d114 8fc45e60 8060d118 8fc3f520 > $ 8 : 00000000 01312d00 0016e35f 00020000 > $12 : 00000080 00000010 00000010 8fc3001c > $16 : 8fc3f520 00000000 00000000 00000000 > $20 : 00000000 00000000 8fc45eb4 00000000 > $24 : 00000000 8011f9b0 > $28 : 8fc44000 8fc45e50 00000001 8024afb8 > Hi : 00000000 > Lo : 01312d00 > epc : 80527c64 __down_write_nested+0x68/0xf0 > Not tainted > 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 > > > Code: ac850008 afa60010 afa20014 <ac450000> 40016000 30630001 > 3421001f 3821001f 00611825 > Disabling lock debugging due to kernel taint > Fixing recursive fault but reboot is needed! > > > Thanks, > Manuel Lauss -- Vasiliy Kulikov http://www.openwall.com - bringing security into open computing environments
