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23 October 2021, 00:29:24 UTC
Revision 43a219cbe5a46ec3f6a1874bb2cb2fd4de8322cc authored by Andrey Konovalov on 26 February 2021, 01:20:03 UTC, committed by Linus Torvalds on 26 February 2021, 17:41:02 UTC 
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>
1 parent e2db1a9
Raw File
Tip revision: 43a219cbe5a46ec3f6a1874bb2cb2fd4de8322cc authored by Andrey Konovalov on 26 February 2021, 01:20:03 UTC
kasan: optimize large kmalloc poisoning
Tip revision: 43a219c
.cocciconfig 
[spatch]
	options = --timeout 200
	options = --use-gitgrep
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