From 4755dc6f29597d9f52fe69e8230e145680e30f8d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 29 Sep 2023 11:04:24 -0700 Subject: RDMA: Annotate struct rdma_hw_stats 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 rdma_hw_stats. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20230929180431.3005464-1-keescook@chromium.org Signed-off-by: Leon Romanovsky --- include/rdma/ib_verbs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/rdma/ib_verbs.h') diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index fd61c3a56fa7..f8f0d3a4fdec 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -608,7 +608,7 @@ struct rdma_hw_stats { const struct rdma_stat_desc *descs; unsigned long *is_disabled; int num_counters; - u64 value[]; + u64 value[] __counted_by(num_counters); }; #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 -- cgit v1.2.3