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Do not try to dereference thread pointer when the value is not a pointer.

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Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
kib 2014-11-13 17:44:35 +00:00
parent e257542e11
commit 6cedba80db
1 changed files with 8 additions and 3 deletions
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11
sys/kern/kern_lock.c
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@ -1360,9 +1360,14 @@ lockmgr_printinfo(const struct lock *lk)
(uintmax_t)LK_SHARERS(lk->lk_lock));
else {
td = lockmgr_xholder(lk);
printf("lock type %s: EXCL by thread %p "
"(pid %d, %s, tid %d)\n", lk->lock_object.lo_name, td,
td->td_proc->p_pid, td->td_proc->p_comm, td->td_tid);
if (td == (struct thread *)LK_KERNPROC)
printf("lock type %s: EXCL by KERNPROC\n",
lk->lock_object.lo_name);
else
printf("lock type %s: EXCL by thread %p "
"(pid %d, %s, tid %d)\n", lk->lock_object.lo_name,
td, td->td_proc->p_pid, td->td_proc->p_comm,
td->td_tid);
}
x = lk->lk_lock;