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authorKees Cook <keescook@chromium.org>2023-09-22 10:53:51 -0700
committerKees Cook <keescook@chromium.org>2023-10-08 22:46:05 -0700
commitc5225cd073c65a6d7e8e311ec0114792a671982a (patch)
tree459e4e9ace2bd45ce2cb53bf9e197aa656245bc6 /drivers/mailbox
parent86748637bff4d1fd1c4fb3c7e5aedf0baca44a93 (diff)
mailbox: zynqmp: Annotate struct zynqmp_ipi_pdata 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 zynqmp_ipi_pdata. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Michal Simek <michal.simek@amd.com> Cc: linux-arm-kernel@lists.infradead.org Reviewed-by: Justin Stitt <justinstitt@google.com> Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org> Acked-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/20230922175351.work.018-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/mailbox')
-rw-r--r--drivers/mailbox/zynqmp-ipi-mailbox.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
index e4fcac97dbfa..7fa533e80dd9 100644
--- a/drivers/mailbox/zynqmp-ipi-mailbox.c
+++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
@@ -108,7 +108,7 @@ struct zynqmp_ipi_pdata {
unsigned int method;
u32 local_id;
int num_mboxes;
- struct zynqmp_ipi_mbox ipi_mboxes[];
+ struct zynqmp_ipi_mbox ipi_mboxes[] __counted_by(num_mboxes);
};
static struct device_driver zynqmp_ipi_mbox_driver = {