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authorKees Cook <[email protected]>2023-09-29 11:04:24 -0700
committerLeon Romanovsky <[email protected]>2023-10-02 14:44:54 +0300
commit4755dc6f29597d9f52fe69e8230e145680e30f8d (patch)
tree9e6ba7f5f22fb29752a27a6e0e419b61500ca082
parentc9813b0b9992eab01a47ad8d10f0add13f898692 (diff)
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 <[email protected]> Cc: Leon Romanovsky <[email protected]> Cc: [email protected] Signed-off-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Leon Romanovsky <[email protected]>
-rw-r--r--include/rdma/ib_verbs.h2
1 files changed, 1 insertions, 1 deletions
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