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Diffstat (limited to 'mm/kasan/report.c')
-rw-r--r--mm/kasan/report.c29
1 files changed, 26 insertions, 3 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 8fff1825b22c..884a950c7026 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -39,6 +39,31 @@ static unsigned long kasan_flags;
#define KASAN_BIT_REPORTED 0
#define KASAN_BIT_MULTI_SHOT 1
+enum kasan_arg_fault {
+ KASAN_ARG_FAULT_DEFAULT,
+ KASAN_ARG_FAULT_REPORT,
+ KASAN_ARG_FAULT_PANIC,
+};
+
+static enum kasan_arg_fault kasan_arg_fault __ro_after_init = KASAN_ARG_FAULT_DEFAULT;
+
+/* kasan.fault=report/panic */
+static int __init early_kasan_fault(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ if (!strcmp(arg, "report"))
+ kasan_arg_fault = KASAN_ARG_FAULT_REPORT;
+ else if (!strcmp(arg, "panic"))
+ kasan_arg_fault = KASAN_ARG_FAULT_PANIC;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+early_param("kasan.fault", early_kasan_fault);
+
bool kasan_save_enable_multi_shot(void)
{
return test_and_set_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags);
@@ -102,10 +127,8 @@ static void end_report(unsigned long *flags, unsigned long addr)
panic_on_warn = 0;
panic("panic_on_warn set ...\n");
}
-#ifdef CONFIG_KASAN_HW_TAGS
- if (kasan_flag_panic)
+ if (kasan_arg_fault == KASAN_ARG_FAULT_PANIC)
panic("kasan.fault=panic set ...\n");
-#endif
kasan_enable_current();
}