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-rw-r--r--sys/kern/kern_mutex.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/kern_mutex.c b/sys/kern/kern_mutex.c
index 1a4dda2..a58311e 100644
--- a/sys/kern/kern_mutex.c
+++ b/sys/kern/kern_mutex.c
@@ -405,7 +405,8 @@ mtx_exit_hard(struct mtx *m, int type)
_release_lock_quick(m);
CTR1(KTR_LOCK, "mtx_exit: 0x%p not held", m);
} else
- m->mtx_lock = MTX_CONTESTED;
+ atomic_store_rel_ptr(&m->mtx_lock,
+ (void *)MTX_CONTESTED);
pri = MAXPRI;
LIST_FOREACH(m1, &p->p_contested, mtx_contested) {
int cp = TAILQ_FIRST(&m1->mtx_blocked)->p_priority;
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