007213b1d0
Issue: when SLUB debug is on, hwtag kasan_unpoison() would overwrite the redzone of object with unaligned size. An additional memzero_explicit() path is added to replacing init by hwtag instruction for those unaligned size at SLUB debug mode. The penalty is acceptable since they are only enabled in debug mode, not production builds. A block of comment is added for explanation. Link: https://lore.kernel.org/lkml/20210705103229.8505-3-yee.lee@mediatek.com/ Signed-off-by: Yee Lee <yee.lee@mediatek.com> Suggested-by: Andrey Konovalov <andreyknvl@gmail.com> Suggested-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Nicholas Tang <nicholas.tang@mediatek.com> Cc: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Bug: 193482732 Change-Id: Ie0f6a15637d212f5a273e13b7d271376c074cb91 Signed-off-by: Yee Lee <yee.lee@mediatek.com> |
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| .. | ||
| Makefile | ||
| common.c | ||
| generic.c | ||
| hw_tags.c | ||
| init.c | ||
| kasan.h | ||
| quarantine.c | ||
| report.c | ||
| report_generic.c | ||
| report_hw_tags.c | ||
| report_sw_tags.c | ||
| shadow.c | ||
| sw_tags.c | ||