From: Thorsten Blum <thorsten.blum@toblux.com>
To: kent.overstreet@linux.dev, kees@kernel.org, gustavoars@kernel.org
Cc: linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org,
Thorsten Blum <thorsten.blum@toblux.com>
Subject: [PATCH] bcachefs: Annotate struct bucket_array with __counted_by()
Date: Wed, 21 Aug 2024 18:29:22 +0200 [thread overview]
Message-ID: <20240821162921.86767-2-thorsten.blum@toblux.com> (raw)
Add the __counted_by compiler attribute to the flexible array member
bucket to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
---
fs/bcachefs/buckets_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/bcachefs/buckets_types.h b/fs/bcachefs/buckets_types.h
index c9698cdf866f..a19460a1bb7c 100644
--- a/fs/bcachefs/buckets_types.h
+++ b/fs/bcachefs/buckets_types.h
@@ -24,7 +24,7 @@ struct bucket_array {
u16 first_bucket;
size_t nbuckets;
size_t nbuckets_minus_first;
- struct bucket b[];
+ struct bucket b[] __counted_by(nbuckets);
};
struct bucket_gens {
--
2.46.0
next reply other threads:[~2024-08-21 16:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-21 16:29 Thorsten Blum [this message]
2024-08-22 17:35 ` Kees Cook
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