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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:51:47 -0700 |
|---|---|---|
| committer | Tzung-Bi Shih <tzungbi@kernel.org> | 2023-09-25 02:17:29 +0000 |
| commit | 1aa8df90f4569acd36d2c94a9cfe1eee561575d6 (patch) | |
| tree | d1e5d120dc53672ff4b95240b695faeed86f2cf4 /drivers/platform/chrome | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
| download | lwn-1aa8df90f4569acd36d2c94a9cfe1eee561575d6.tar.gz lwn-1aa8df90f4569acd36d2c94a9cfe1eee561575d6.zip | |
platform/chrome: wilco_ec: Annotate struct ec_event_queue 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 ec_event_queue.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Benson Leung <bleung@chromium.org>
Cc: Tzung-Bi Shih <tzungbi@kernel.org>
Cc: Dawei Li <set_pte_at@outlook.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Maximilian Luz <luzmaximilian@gmail.com>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiang Jian <jiangjian@cdjrlc.com>
Cc: chrome-platform@lists.linux.dev
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175146.work.219-kees@kernel.org
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Diffstat (limited to 'drivers/platform/chrome')
| -rw-r--r-- | drivers/platform/chrome/wilco_ec/event.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/platform/chrome/wilco_ec/event.c b/drivers/platform/chrome/wilco_ec/event.c index a40f60bcefb6..f80a7c83cfba 100644 --- a/drivers/platform/chrome/wilco_ec/event.c +++ b/drivers/platform/chrome/wilco_ec/event.c @@ -95,7 +95,7 @@ struct ec_event_queue { int capacity; int head; int tail; - struct ec_event *entries[]; + struct ec_event *entries[] __counted_by(capacity); }; /* Maximum number of events to store in ec_event_queue */ |