From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Currently, end_report() does not call trace_error_report_end() for bugs
detected in either async or asymm mode (when kasan_async_fault_possible()
returns true), as the address of the bad access might be unknown.
However, for asymm mode, the address is known for faults triggered by
read operations.
Instead of using kasan_async_fault_possible(), simply check that
the addr is not NULL when calling trace_error_report_end().
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
---
mm/kasan/report.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index d60ee8b81e2b..2d892ec050be 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -112,7 +112,7 @@ static void start_report(unsigned long *flags)
static void end_report(unsigned long *flags, unsigned long addr)
{
- if (!kasan_async_fault_possible())
+ if (addr)
trace_error_report_end(ERROR_DETECTOR_KASAN, addr);
pr_err("==================================================================\n");
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
--
2.25.1
