Re: oops in 2.4.4-ac9 (mm/slab.c)

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 17 May 2001 01:19:34 +0100 (BST)


> when this happened, and I was not able to log in onto any console or
> terminal afterwards (probably because tty_open failed very miserably
> on the way?)

Its a deliberate debugging trap.

> #if DEBUG
> if (cachep->flags & SLAB_POISON)
> if (kmem_check_poison_obj(cachep, objp))
> BUG();
> ^^^^^^ This one is triggered

Someone freed memory and then scribbled on it.

The first thing useful here is to know which drivers you were using shortly
before the oops
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