From fc424078f50840a6610bfdd860cb0c515fe33398 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 29 Sep 2023 11:04:25 -0700 Subject: RDMA/core: Annotate struct ib_pkey_cache 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 ib_pkey_cache. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: "Håkon Bugge" Cc: Avihai Horon Cc: Anand Khoje Cc: Mark Bloch Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20230929180431.3005464-2-keescook@chromium.org Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/infiniband/core') diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 7acc0f936dad..c02a96d3572a 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -46,7 +46,7 @@ struct ib_pkey_cache { int table_len; - u16 table[]; + u16 table[] __counted_by(table_len); }; struct ib_update_work { -- cgit v1.2.3