From ea3fbe0707f9a02a29875966668b6f15284f335a Mon Sep 17 00:00:00 2001
From: Mark Johnston <markj@FreeBSD.org>
Date: Fri, 23 Jul 2021 10:41:00 -0400
Subject: [PATCH] KASAN: Disable checking before triggering a panic

KASAN hooks will not generate reports if panicstr != NULL, but then
there is a window after the initial panic() call where another report
may be raised.  This can happen if a false positive occurs; to simplify
debugging of such problems, avoid recursing.

Sponsored by:	The FreeBSD Foundation
---
 sys/kern/subr_asan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/kern/subr_asan.c b/sys/kern/subr_asan.c
index 07f7b44d08d..825d7d4228c 100644
--- a/sys/kern/subr_asan.c
+++ b/sys/kern/subr_asan.c
@@ -174,6 +174,7 @@ kasan_code_name(uint8_t code)
 
 #define	REPORT(f, ...) do {				\
 	if (panic_on_violation) {			\
+		kasan_enabled = false;			\
 		panic(f, __VA_ARGS__);			\
 	} else {					\
 		struct stack st;			\