* [PATCH] nfs: Annotate struct pnfs_commit_array with __counted_by()
@ 2024-09-30 17:33 Thorsten Blum
0 siblings, 0 replies; only message in thread
From: Thorsten Blum @ 2024-09-30 17:33 UTC (permalink / raw)
To: Trond Myklebust, Anna Schumaker, Kees Cook, Gustavo A. R. Silva
Cc: Thorsten Blum, linux-nfs, linux-kernel, linux-hardening
Add the __counted_by compiler attribute to the flexible array member
buckets 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/nfs_xdr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 12d8e47bc5a3..559273a0f16d 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1336,7 +1336,7 @@ struct pnfs_commit_array {
struct rcu_head rcu;
refcount_t refcount;
unsigned int nbuckets;
- struct pnfs_commit_bucket buckets[];
+ struct pnfs_commit_bucket buckets[] __counted_by(nbuckets);
};
struct pnfs_ds_commit_info {
--
2.46.2
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2024-09-30 17:45 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-09-30 17:33 [PATCH] nfs: Annotate struct pnfs_commit_array with __counted_by() Thorsten Blum
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox