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@xxxxxxxxxx>
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@xxxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Cc: Florian Mayer <fmayer@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Peter Collingbourne <pcc@xxxxxxxxxx>
Cc: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx are
mm-kasan-fix-__gfp_bits_shift-definition-breaking-lockdep.patch
