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R. Silva" , linux-kernel@vger.kernel.org (open list), linux-hardening@vger.kernel.org (open list:KERNEL HARDENING (not covered by other areas):Keyword:\b__counted_by(_le|_be)?\b) Subject: [PATCH] RDMA/core: use kzalloc_flex Date: Thu, 26 Mar 2026 20:01:24 -0700 Message-ID: <20260327030124.8385-1-rosenp@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Simplifies allocations by using a flexible array member in this struct. Add __counted_by to get extra runtime analysis. Signed-off-by: Rosen Penev --- drivers/infiniband/core/cache.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index ee4a2bc68fb2..896486fa6185 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -116,9 +116,9 @@ struct ib_gid_table { /* rwlock protects data_vec[ix]->state and entry pointer. */ rwlock_t rwlock; - struct ib_gid_table_entry **data_vec; /* bit field, each bit indicates the index of default GID */ u32 default_gid_indices; + struct ib_gid_table_entry *data_vec[] __counted_by(sz); }; static void dispatch_gid_change_event(struct ib_device *ib_dev, u32 port) @@ -770,24 +770,16 @@ const struct ib_gid_attr *rdma_find_gid_by_filter( static struct ib_gid_table *alloc_gid_table(int sz) { - struct ib_gid_table *table = kzalloc_obj(*table); + struct ib_gid_table *table = kzalloc_flex(*table, data_vec, sz); if (!table) return NULL; - table->data_vec = kzalloc_objs(*table->data_vec, sz); - if (!table->data_vec) - goto err_free_table; + table->sz = sz; mutex_init(&table->lock); - - table->sz = sz; rwlock_init(&table->rwlock); return table; - -err_free_table: - kfree(table); - return NULL; } static void release_gid_table(struct ib_device *device, -- 2.53.0