Re: [Crash-utility] problems running crash on recent rawhide live kernels
Dave Anderson wrote:
crash> pid_link 0xffff810018899b88
struct pid_link {
node = {
next = 0x0,
pprev = 0xffff81000106ed80
},
pid = 0xcccccccccccccccc
}
Does anybody have an idea what the significance of the
0xcccccccccccccccc is? Or what is wrong with gathering
the tasks in that manner?
Note to Self,
Hmmm, probably due to this slub cache code:
#define SLUB_RED_ACTIVE 0xcc
static void init_object(struct kmem_cache *s, void *object, int active)
{
u8 *p = object;
if (s->flags & __OBJECT_POISON) {
memset(p, POISON_FREE, s->objsize - 1);
p[s->objsize -1] = POISON_END;
}
if (s->flags & SLAB_RED_ZONE)
memset(p + s->objsize,
active ? SLUB_RED_ACTIVE : SLUB_RED_INACTIVE,
s->inuse - s->objsize);
}
and since the cc's I'm seeing are in the red zone, I guess
that that the pid_hash[] entry must just point to an
un-embedded hlist_node (?).
Back to the drawing board...
Dave