> #if DEBUG
> if (cachep->flags & SLAB_POISON)
> if (kmem_check_poison_obj(cachep, objp))
> BUG();
>
> Anyone seen this before and solved this problem?
If you look in "mm/slab.c" you'll find there are three ways to die of
a poisoned slab cache:
POISON_INUSE - Using an uninitialized slab
POISON_FREE - Use after free
POISON_END - Store-past-end-byte
The OOPS traceback in "/var/log/messages" should help determine how
you got here.
Cheers
Reply by Bill●May 20, 20052005-05-20
I am porting my Linux 2.4 code from an evaluation board with an MPC8275
processor and 8 Mbytes of flash, consisting of four Sharp
LH28F016SCT-L95 flash chips, to a custom board with an MPC8270
processor and 8 Mbytes of flash, consisting of two Intel 28F320C3 flash
chips. The custom board is crashing when mounting the JFFS2
filesystem. Specifically, with debugging on, in
kmem_cache_alloc_one_tail, I reach the following BUG:
#if DEBUG
if (cachep->flags & SLAB_POISON)
if (kmem_check_poison_obj(cachep, objp))
BUG();
Anyone seen this before and solved this problem?
Thank you.