[merged] kasan-simplify-async-check-in-end_report.patch removed from -mm tree

[merged] kasan-simplify-async-check-in-end_report.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: kasan: simplify async check in end_report()
has been removed from the -mm tree.  Its filename was
     kasan-simplify-async-check-in-end_report.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Andrey Konovalov <andreyknvl@google.com>
Subject: kasan: simplify async check in end_report()

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().

Link: https://lkml.kernel.org/r/1c8ce43f97300300e62c941181afa2eb738965c5.1646237226.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kasan/report.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/kasan/report.c~kasan-simplify-async-check-in-end_report
+++ a/mm/kasan/report.c
@@ -112,7 +112,7 @@ static void start_report(unsigned long *
 
 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);
_

Patches currently in -mm which might be from andreyknvl@google.com are

stacktrace-add-interface-based-on-shadow-call-stack.patch
arm64-scs-save-scs_sp-values-per-cpu-when-switching-stacks.patch
arm64-implement-stack_trace_save_shadow.patch
kasan-use-stack_trace_save_shadow.patch