From: Thorsten Blum <thorsten.blum@linux.dev>
To: Marcel Holtmann <marcel@holtmann.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>, Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Thorsten Blum <thorsten.blum@linux.dev>,
linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: [PATCH] Bluetooth: Annotate struct hci_drv_rp_read_info with __counted_by_le()
Date: Sun, 10 Aug 2025 23:53:20 +0200 [thread overview]
Message-ID: <20250810215319.2629-2-thorsten.blum@linux.dev> (raw)
Add the __counted_by_le() compiler attribute to the flexible array
member 'supported_commands' to improve access bounds-checking via
CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
include/net/bluetooth/hci_drv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci_drv.h b/include/net/bluetooth/hci_drv.h
index 2f01c44f05ec..3fd6fdbdb02e 100644
--- a/include/net/bluetooth/hci_drv.h
+++ b/include/net/bluetooth/hci_drv.h
@@ -47,7 +47,7 @@ struct hci_drv_ev_cmd_complete {
struct hci_drv_rp_read_info {
__u8 driver_name[HCI_DRV_MAX_DRIVER_NAME_LENGTH];
__le16 num_supported_commands;
- __le16 supported_commands[];
+ __le16 supported_commands[] __counted_by_le(num_supported_commands);
} __packed;
/* Driver specific OGF (Opcode Group Field)
--
2.50.1
next reply other threads:[~2025-08-10 21:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-10 21:53 Thorsten Blum [this message]
2025-08-11 16:16 ` [PATCH] Bluetooth: Annotate struct hci_drv_rp_read_info with __counted_by_le() patchwork-bot+bluetooth
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