diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:52:45 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-03 14:35:49 +0200 |
| commit | f34907ecca71177a438bc1f1012e945326f707c3 (patch) | |
| tree | 24a5d0d5d10f36262af2dbda8eb26e68274c373d /drivers/tty/mxser.c | |
| parent | 500d179674c674c0fe143d9673d17bc4ee8a88f2 (diff) | |
mxser: Annotate struct mxser_board 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 mxser_board.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175245.work.196-kees@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/mxser.c')
| -rw-r--r-- | drivers/tty/mxser.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 10aa4ed38793..6ce7f259968f 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -288,7 +288,7 @@ struct mxser_board { enum mxser_must_hwid must_hwid; speed_t max_baud; - struct mxser_port ports[]; + struct mxser_port ports[] __counted_by(nports); }; static DECLARE_BITMAP(mxser_boards, MXSER_BOARDS); |