diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:53:48 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-05 13:34:05 +0200 |
| commit | 2953fa030690bdca0b14ab641c8e8c1df002aa51 (patch) | |
| tree | 8826f678f2f40d44e0902e020c318d9f57ec2f56 | |
| parent | 1b6f457b835447a787a729dbd421653f865921d0 (diff) | |
hpet: Annotate struct hpets with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct hpets.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175348.work.056-kees@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/char/hpet.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index ee71376f174b..0176a76cf0fe 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -111,7 +111,7 @@ struct hpets { unsigned long hp_delta; unsigned int hp_ntimer; unsigned int hp_which; - struct hpet_dev hp_dev[]; + struct hpet_dev hp_dev[] __counted_by(hp_ntimer); }; static struct hpets *hpets; |