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authorKees Cook <keescook@chromium.org>2023-09-22 10:28:53 -0700
committerJakub Kicinski <kuba@kernel.org>2023-10-02 11:24:55 -0700
commit93bc6ab6b19d3f6609a3f4a31103880e89c4c118 (patch)
treed89acc23aceffcce1e250eb0fa91dc1d610249a8
parente7b34822fa4dcf6101deb3d51a77efd77533571d (diff)
net: enetc: Annotate struct enetc_psfp_gate 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 enetc_psfp_gate. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Claudiu Manoil <claudiu.manoil@nxp.com> Cc: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230922172858.3822653-11-keescook@chromium.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--drivers/net/ethernet/freescale/enetc/enetc_qos.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
index 2513b44056c1..b65da49dd926 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
@@ -443,7 +443,7 @@ struct enetc_psfp_gate {
u32 num_entries;
refcount_t refcount;
struct hlist_node node;
- struct action_gate_entry entries[];
+ struct action_gate_entry entries[] __counted_by(num_entries);
};
/* Only enable the green color frame now