[PATCH 05/14] net: enetc: Annotate struct enetc_int_vector with __counted_by
From: Kees Cook <hidden>
Date: 2023-09-22 17:29:42
Also in:
linux-hardening, linux-hyperv, linux-rdma, lkml, llvm
Subsystem:
freescale enetc ethernet drivers, networking drivers, the rest · Maintainers:
Claudiu Manoil, Vladimir Oltean, Wei Fang, Clark Wang, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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_int_vector. [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> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <redacted> --- drivers/net/ethernet/freescale/enetc/enetc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
index 7439739cd81a..a9c2ff22431c 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h@@ -297,7 +297,7 @@ struct enetc_int_vector { char name[ENETC_INT_NAME_MAX]; struct enetc_bdr rx_ring; - struct enetc_bdr tx_ring[]; + struct enetc_bdr tx_ring[] __counted_by(count_tx_rings); } ____cacheline_aligned_in_smp; struct enetc_cls_rule {
--
2.34.1