From 93bc6ab6b19d3f6609a3f4a31103880e89c4c118 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 22 Sep 2023 10:28:53 -0700 Subject: 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 Cc: Vladimir Oltean Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20230922172858.3822653-11-keescook@chromium.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/freescale/enetc/enetc_qos.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 -- cgit