commit 035fbafc7a54b8c7755b3c508b8f3ab6ff3c8d65
author Colin Ian King <colin.king@canonical.com> Mon Oct 12 15:03:41 2020 +0100
committer Jens Axboe <axboe@kernel.dk> Sat Oct 17 09:25:41 2020 -0600
tree 2f0aa308ff6499f7bc9bcf25ac263bf726c59796
parent 071a0578b0ce0b0e543d1e38ee6926b9cc21c198

io_uring: Fix sizeof() mismatch

An incorrect sizeof() is being used, sizeof(file_data->table) is not
correct, it should be sizeof(*file_data->table).

Fixes: 5398ae698525 ("io_uring: clean file_data access in files_register")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Sizeof not portable (SIZEOF_MISMATCH)")
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 2e1dc35..717dd5d 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -7306,7 +7306,7 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
 	spin_lock_init(&file_data->lock);
 
 	nr_tables = DIV_ROUND_UP(nr_args, IORING_MAX_FILES_TABLE);
-	file_data->table = kcalloc(nr_tables, sizeof(file_data->table),
+	file_data->table = kcalloc(nr_tables, sizeof(*file_data->table),
 				   GFP_KERNEL);
 	if (!file_data->table)
 		goto out_free;