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Re: Kernel lock-up with NPTL



On Fri, Jun 06, 2003 at 01:11:41PM -0700, Perez-Gonzalez, Inaky wrote:
> It is similar, but not the same. This is a TSC based timer; if
> the interrupts are not too hosed, it will still work.

Ok, I turned on all debugging that I could possibly
turned on - and upgraded to 2.5.70.

Then run the program from the console, not X.

The result scrolled from my screen - but it was also written
to /var/log/messages:


Jun  9 01:01:03 ansset kernel: Unable to handle kernel paging request at virtual address 6b6b6b73
Jun  9 01:01:03 ansset kernel:  printing eip:
Jun  9 01:01:03 ansset kernel: c0120582
Jun  9 01:01:03 ansset kernel: *pde = 00000000
Jun  9 01:01:03 ansset kernel: Oops: 0002 [#1]
Jun  9 01:01:03 ansset kernel: CPU:    0
Jun  9 01:01:03 ansset kernel: EIP:    0060:[<c0120582>]    Not tainted
Jun  9 01:01:03 ansset kernel: EFLAGS: 00010202
Jun  9 01:01:03 ansset kernel: EIP is at do_fork+0xf2/0x1c0
Jun  9 01:01:03 ansset kernel: eax: 6b6b6b6b   ebx: 00000000   ecx: d5256a00   edx: 00000002
Jun  9 01:01:03 ansset kernel: esi: 6b6b6b6b   edi: 00000000   ebp: d3b37f98   esp: d3b37f24
Jun  9 01:01:03 ansset kernel: ds: 007b   es: 007b   ss: 0068
Jun  9 01:01:03 ansset kernel: Process threads_threads (pid: 1501, threadinfo=d3b36000 task=d6108ec0)
Jun  9 01:01:03 ansset kernel: Stack: 00790f00 42934950 d3b37fc4 00000000 42934d78 42934d78 00100070 d3b37f78 
Jun  9 01:01:03 ansset kernel:        c015a807 d5069448 42134000 42135000 000000a0 00000801 fffffff4 00000000 
Jun  9 01:01:03 ansset kernel:        000000a0 00000000 42935000 42134000 42134000 d3b37fbc c015acbb d5069448 
Jun  9 01:01:03 ansset kernel: Call Trace:
Jun  9 01:01:03 ansset kernel:  [<c015a807>] mprotect_fixup+0x177/0x280
Jun  9 01:01:03 ansset kernel:  [<c015acbb>] sys_mprotect+0x3ab/0x3bf
Jun  9 01:01:03 ansset kernel:  [<c0107cb5>] sys_clone+0x45/0x50
Jun  9 01:01:03 ansset kernel:  [<c010a24b>] syscall_call+0x7/0xb
Jun  9 01:01:03 ansset kernel: 
Jun  9 01:01:03 ansset kernel: Code: 0f ab 50 08 89 c8 e8 63 98 ff ff ff 05 ac 4a 43 c0 85 ff 75 
Jun  9 01:01:09 ansset kernel:  <3>Slab corruption: start=d5256a00, expend=d525707f, problemat=d5256fee
Jun  9 01:01:09 ansset kernel: Data: ****************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************!
*************************************
Jun  9 01:01:09 ansset kernel: ************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************6F ************************************************************************************************************************************************A5 
Jun  9 01:01:09 ansset kernel: Next: ********************************
Jun  9 01:01:09 ansset kernel: slab error in check_poison_obj(): cache `task_struct': object was modified after freeing
Jun  9 01:01:09 ansset kernel: Call Trace:
Jun  9 01:01:09 ansset kernel:  [<c014a87b>] check_poison_obj+0x15b/0x1a0
Jun  9 01:01:09 ansset kernel:  [<c014aa4c>] slab_destroy+0x18c/0x1a0
Jun  9 01:01:09 ansset kernel:  [<c014d751>] reap_timer_fnc+0x2e1/0x4c0
Jun  9 01:01:09 ansset kernel:  [<c014d470>] reap_timer_fnc+0x0/0x4c0
Jun  9 01:01:09 ansset kernel:  [<c012bcbd>] run_timer_softirq+0x17d/0x420
Jun  9 01:01:09 ansset kernel:  [<c01120cc>] timer_interrupt+0x8c/0x230
Jun  9 01:01:09 ansset kernel:  [<c0126a61>] do_softirq+0xa1/0xb0
Jun  9 01:01:09 ansset kernel:  [<c010c46f>] do_IRQ+0x23f/0x380
Jun  9 01:01:09 ansset kernel:  [<c0107240>] default_idle+0x0/0x30
Jun  9 01:01:09 ansset kernel:  [<c0107240>] default_idle+0x0/0x30
Jun  9 01:01:09 ansset kernel:  [<c010a3b8>] common_interrupt+0x18/0x20
Jun  9 01:01:09 ansset kernel:  [<c0107240>] default_idle+0x0/0x30
Jun  9 01:01:09 ansset kernel:  [<c0107240>] default_idle+0x0/0x30
Jun  9 01:01:09 ansset kernel:  [<c0107267>] default_idle+0x27/0x30
Jun  9 01:01:09 ansset kernel:  [<c01072e1>] cpu_idle+0x31/0x40
Jun  9 01:01:09 ansset kernel:  [<c0105000>] rest_init+0x0/0xf0
Jun  9 01:01:09 ansset kernel:  [<c03e678b>] start_kernel+0x1ab/0x210
Jun  9 01:01:09 ansset kernel:  [<c03e64a0>] unknown_bootoption+0x0/0x100
Jun  9 01:01:09 ansset kernel: 


I have no idea what to do with this information.
I need someone else to actually fix this :/

-- 
Carlo Wood <carlo alinoe com>




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