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820a1e6e87
linux/mm/kasan
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Matthew Wilcox (Oracle) 820a1e6e87 kasan: fix tag for large allocations when using CONFIG_SLAB 
If an object is allocated on a tail page of a multi-page slab, kasan
will get the wrong tag because page->s_mem is NULL for tail pages.  I'm
not quite sure what the user-visible effect of this might be.

Link: https://lkml.kernel.org/r/20211001024105.3217339-1-willy@infradead.org
Fixes: 7f94ffbc4c ("kasan: add hooks implementation for tag-based mode")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Marco Elver <elver@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-06 13:30:33 -07:00
..
common.c kasan: fix tag for large allocations when using CONFIG_SLAB 2021-11-06 13:30:33 -07:00
generic.c kasan: generic: introduce kasan_record_aux_stack_noalloc() 2021-11-06 13:30:33 -07:00
hw_tags.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
init.c kasan: use MAX_PTRS_PER_* for early shadow tables 2021-06-29 10:53:53 -07:00
kasan.h kasan: common: provide can_alloc in kasan_save_stack() 2021-11-06 13:30:33 -07:00
Makefile kasan: integrate the common part of two KASAN tag-based modes 2021-06-29 10:53:53 -07:00
quarantine.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
report_generic.c mm/kasan: switch from strlcpy to strscpy 2021-04-30 11:20:41 -07:00
report_hw_tags.c kasan: integrate the common part of two KASAN tag-based modes 2021-06-29 10:53:53 -07:00
report_sw_tags.c kasan: integrate the common part of two KASAN tag-based modes 2021-06-29 10:53:53 -07:00
report_tags.c kasan: integrate the common part of two KASAN tag-based modes 2021-06-29 10:53:53 -07:00
report.c mm/kasan: move kasan.fault to mm/kasan/report.c 2021-09-03 09:58:14 -07:00
shadow.c kasan: allow architectures to provide an outline readiness check 2021-06-29 10:53:53 -07:00
sw_tags.c Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
tags.c kasan: integrate the common part of two KASAN tag-based modes 2021-06-29 10:53:53 -07:00