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authorKees Cook <keescook@chromium.org>2023-09-22 10:53:48 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-10-05 13:34:05 +0200
commit2953fa030690bdca0b14ab641c8e8c1df002aa51 (patch)
tree8826f678f2f40d44e0902e020c318d9f57ec2f56 /drivers/char
parent1b6f457b835447a787a729dbd421653f865921d0 (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>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hpet.c2
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;