[to-be-updated] kasan-use-stack_trace_save_shadow.patch removed from -mm tree

[to-be-updated] kasan-use-stack_trace_save_shadow.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: kasan: use stack_trace_save_shadow
has been removed from the -mm tree.  Its filename was
     kasan-use-stack_trace_save_shadow.patch

This patch was dropped because an updated version will be merged

------------------------------------------------------
From: Andrey Konovalov <andreyknvl@google.com>
Subject: kasan: use stack_trace_save_shadow

Now that stack_trace_save_shadow() is implemented by arm64, use it
whenever CONFIG_HAVE_SHADOW_STACKTRACE is enabled.  This improves the boot
time of a defconfig build by ~30% for all KASAN modes.

Link: https://lkml.kernel.org/r/7027b9b6b0cae2921ff65739582ae499bf61470c.1648049113.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: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Florian Mayer <fmayer@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kasan/common.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/mm/kasan/common.c~kasan-use-stack_trace_save_shadow
+++ a/mm/kasan/common.c
@@ -33,10 +33,13 @@
 depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc)
 {
 	unsigned long entries[KASAN_STACK_DEPTH];
-	unsigned int nr_entries;
+	unsigned int size;
 
-	nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 0);
-	return __stack_depot_save(entries, nr_entries, flags, can_alloc);
+	if (IS_ENABLED(CONFIG_HAVE_SHADOW_STACKTRACE))
+		size = stack_trace_save_shadow(entries, ARRAY_SIZE(entries), 0);
+	else
+		size = stack_trace_save(entries, ARRAY_SIZE(entries), 0);
+	return __stack_depot_save(entries, size, flags, can_alloc);
 }
 
 void kasan_set_track(struct kasan_track *track, gfp_t flags)
_

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

mm-kasan-fix-__gfp_bits_shift-definition-breaking-lockdep.patch