From f385f7156a67bcf2b5448060b316ff050b1b95f6 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Thu, 17 Apr 2003 22:29:23 +0000
Subject: [PATCH] Lock the sched_lock while setting TDF_INPANIC.

---
 sys/kern/kern_shutdown.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/kern/kern_shutdown.c b/sys/kern/kern_shutdown.c
index e85a3108bfaa..abcf113309fe 100644
--- a/sys/kern/kern_shutdown.c
+++ b/sys/kern/kern_shutdown.c
@@ -535,7 +535,9 @@ panic(const char *fmt, ...)
 	}
 #endif
 #endif
+	mtx_lock_spin(&sched_lock);
 	td->td_flags |= TDF_INPANIC;
+	mtx_unlock_spin(&sched_lock);
 	if (!sync_on_panic)
 		bootopt |= RB_NOSYNC;
 	boot(bootopt);