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Fix LOCKDEBUG panic on mutex_init().

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Reported-by: syzbot+5a77339dc0a55e8d8caa@syzkaller.appspotmail.com
This commit is contained in:
ad 2019-12-17 18:08:15 +00:00
parent 1fd88b52af
commit dc1bd2c938
1 changed files with 8 additions and 3 deletions
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11
sys/kern/kern_sleepq.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_sleepq.c,v 1.55 2019/12/16 19:43:36 ad Exp $ */
/* $NetBSD: kern_sleepq.c,v 1.56 2019/12/17 18:08:15 ad Exp $ */
/*-
* Copyright (c) 2006, 2007, 2008, 2009, 2019 The NetBSD Foundation, Inc.
@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_sleepq.c,v 1.55 2019/12/16 19:43:36 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_sleepq.c,v 1.56 2019/12/17 18:08:15 ad Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@ -76,12 +76,17 @@ sleepqlock_t sleepq_locks[SLEEPTAB_HASH_SIZE] __cacheline_aligned;
void
sleeptab_init(sleeptab_t *st)
{
static bool again;
int i;
for (i = 0; i < SLEEPTAB_HASH_SIZE; i++) {
mutex_init(&sleepq_locks[i].lock, MUTEX_DEFAULT, IPL_SCHED);
if (!again) {
mutex_init(&sleepq_locks[i].lock, MUTEX_DEFAULT,
IPL_SCHED);
}
sleepq_init(&st->st_queue[i]);
}
again = true;
}
/*