task_struct slab cache use after free in 2.5.66

From: Zwane Mwaikambo (zwane@linuxpower.ca)
Date: Thu Mar 27 2003 - 22:19:33 EST

I'm having a few stability problems with 2.5.66 under test loads. I
can't quite parse the slab debugging stuff. Is this actually useful to
anyone?

Slab corruption: start=c1f23380, expend=c1f2399f, problemat=c1f23388
Data: ********6A
*******************************************************************************************************
Next: ********************************
slab error in check_poison_obj(): cache `task_struct': object was modified after freeing
Call Trace:
 [<c0142953>] check_poison_obj+0x123/0x170
 [<c0144337>] kmem_cache_alloc+0x117/0x160
 [<c011fdde>] dup_task_struct+0x9e/0xc0
 [<c011fdde>] dup_task_struct+0x9e/0xc0
 [<c0120b82>] copy_process+0x82/0xe30
 [<c0126d3b>] do_softirq+0xbb/0xc0
 [<c012196f>] do_fork+0x3f/0x170
 [<c01077b7>] sys_fork+0x17/0x30
 [<c0109497>] syscall_call+0x7/0xb 

-- 
function.linuxpower.ca
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