From: Thorsten Blum <thorsten.blum@linux.dev>
To: "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Thorsten Blum <thorsten.blum@linux.dev>,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: [PATCH] hv: hyperv.h: Annotate vmbus_channel_gpadl_header with __counted_by()
Date: Tue, 15 Oct 2024 12:18:29 +0200 [thread overview]
Message-ID: <20241015101829.94876-2-thorsten.blum@linux.dev> (raw)
Add the __counted_by compiler attribute to the flexible array member
range to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Compile-tested only.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
include/linux/hyperv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 22c22fb91042..ec62d625c439 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -643,7 +643,7 @@ struct vmbus_channel_gpadl_header {
u32 gpadl;
u16 range_buflen;
u16 rangecount;
- struct gpa_range range[];
+ struct gpa_range range[] __counted_by(rangecount);
} __packed;
/* This is the followup packet that contains more PFNs. */
--
2.47.0
next reply other threads:[~2024-10-15 10:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-15 10:18 Thorsten Blum [this message]
2024-10-16 4:16 ` [PATCH] hv: hyperv.h: Annotate vmbus_channel_gpadl_header with __counted_by() kernel test robot
2024-12-07 7:48 ` Wei Liu
2024-12-09 0:16 ` Thorsten Blum
2024-12-09 0:46 ` Wei Liu
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