kasan: support kasan.stacktrace for SW_TAGS

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Add support for the kasan.stacktrace command-line argument for Software
Tag-Based KASAN.

The following patch adds a command-line argument for selecting the stack
ring size, and, as the stack ring is supported by both the Software and
the Hardware Tag-Based KASAN modes, it is natural that both of them have
support for kasan.stacktrace too.

Link: https://lkml.kernel.org/r/3b43059103faa7f8796017847b7d674b658f11b5.1662411799.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 <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Andrey Konovalov 2022-09-05 23:05:46 +02:00 • committed by Andrew Morton

parent 7bc0584e5d

commit 7ebfce3312

5 changed files with 81 additions and 57 deletions

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15

Documentation/dev-tools/kasan.rst

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39

mm/kasan/hw_tags.c

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36

mm/kasan/kasan.h

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5

mm/kasan/sw_tags.c

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43

mm/kasan/tags.c

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