diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2022-09-05 23:05:46 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:03:01 -0700 |
| commit | 7ebfce33125100e3f0c5e059845a019a1401433d (patch) | |
| tree | b02449fd4156bd3e43c1e12dd407a096b21b0816 /mm/kasan/sw_tags.c | |
| parent | 7bc0584e5d2a687c0855a1b3dec9a6d6857d757b (diff) | |
kasan: support kasan.stacktrace for SW_TAGS
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>
Diffstat (limited to 'mm/kasan/sw_tags.c')
| -rw-r--r-- | mm/kasan/sw_tags.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c index 77f13f391b57..a3afaf2ad1b1 100644 --- a/mm/kasan/sw_tags.c +++ b/mm/kasan/sw_tags.c @@ -42,7 +42,10 @@ void __init kasan_init_sw_tags(void) for_each_possible_cpu(cpu) per_cpu(prng_state, cpu) = (u32)get_cycles(); - pr_info("KernelAddressSanitizer initialized (sw-tags)\n"); + kasan_init_tags(); + + pr_info("KernelAddressSanitizer initialized (sw-tags, stacktrace=%s)\n", + kasan_stack_collection_enabled() ? "on" : "off"); } /* |