Author: kib
Date: Thu Nov 20 11:29:43 2014
New Revision: 274747
URL: https://svnweb.freebsd.org/changeset/base/274747
Log:
MFC r274474:
Do not try to dereference thread pointer when the value is not a pointer.
Modified:
stable/10/sys/kern/kern_lock.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/kern/kern_lock.c
==============================================================================
--- stable/10/sys/kern/kern_lock.c Thu Nov 20 11:26:06 2014
(r274746)
+++ stable/10/sys/kern/kern_lock.c Thu Nov 20 11:29:43 2014
(r274747)
@@ -1341,9 +1341,14 @@ 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;
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