linux-stable/mm/kasan
Andrey Konovalov 43a219cbe5 kasan: optimize large kmalloc poisoning
Similarly to kasan_kmalloc(), kasan_kmalloc_large() doesn't need to
unpoison the object as it as already unpoisoned by alloc_pages() (or by
ksize() for krealloc()).

This patch changes kasan_kmalloc_large() to only poison the redzone.

Link: https://lkml.kernel.org/r/33dee5aac0e550ad7f8e26f590c9b02c6129b4a3.1612546384.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:41:02 -08:00
..
common.c kasan: optimize large kmalloc poisoning 2021-02-26 09:41:02 -08:00
generic.c kfence, kasan: make KFENCE compatible with KASAN 2021-02-26 09:41:02 -08:00
hw_tags.c kasan, arm64: allow using KUnit tests with HW_TAGS mode 2021-02-24 13:38:31 -08:00
init.c kasan: fix incorrect arguments passing in kasan_add_zero_shadow 2021-01-24 10:34:52 -08:00
kasan.h kasan, mm: optimize kmalloc poisoning 2021-02-26 09:41:02 -08:00
Makefile kasan, arm64: implement HW_TAGS runtime 2020-12-22 12:55:08 -08:00
quarantine.c kasan: prefix global functions with kasan_ 2021-02-24 13:38:30 -08:00
report.c kasan: use error_report_end tracepoint 2021-02-26 09:41:02 -08:00
report_generic.c kasan: prefix global functions with kasan_ 2021-02-24 13:38:30 -08:00
report_hw_tags.c kasan: prefix global functions with kasan_ 2021-02-24 13:38:30 -08:00
report_sw_tags.c kasan: prefix global functions with kasan_ 2021-02-24 13:38:30 -08:00
shadow.c kasan, mm: optimize kmalloc poisoning 2021-02-26 09:41:02 -08:00
sw_tags.c kasan: fix bug detection via ksize for HW_TAGS mode 2021-02-24 13:38:31 -08:00