From 49f33846efc079eb94b044bf897e90909fd3aa11 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 22 Sep 2023 10:50:15 -0700 Subject: i3c: master: cdns: Annotate struct cdns_i3c_xfer with __counted_by MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 cdns_i3c_xfer. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: "Przemysław Gaj" Cc: Alexandre Belloni Cc: linux-i3c@lists.infradead.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20230922175014.work.637-kees@kernel.org Signed-off-by: Alexandre Belloni --- drivers/i3c/master/i3c-master-cdns.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/i3c') diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c index 8f1fda3c7ac5..bcbe8f914149 100644 --- a/drivers/i3c/master/i3c-master-cdns.c +++ b/drivers/i3c/master/i3c-master-cdns.c @@ -387,7 +387,7 @@ struct cdns_i3c_xfer { struct completion comp; int ret; unsigned int ncmds; - struct cdns_i3c_cmd cmds[]; + struct cdns_i3c_cmd cmds[] __counted_by(ncmds); }; struct cdns_i3c_data { -- cgit v1.2.3-58-ga151