From: Dmitry Antipov Date: Thu, 21 Dec 2023 08:47:45 +0000 (+0300) Subject: btrfs: fix kvcalloc() arguments order in btrfs_ioctl_send() X-Git-Tag: v6.6.31~87 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0b76a4f723623c3215a285fb9ccf46236a5d2264;p=thirdparty%2Fkernel%2Fstable.git btrfs: fix kvcalloc() arguments order in btrfs_ioctl_send() commit 6ff09b6b8c2fb6b3edda4ffaa173153a40653067 upstream. When compiling with gcc version 14.0.0 20231220 (experimental) and W=1, I've noticed the following warning: fs/btrfs/send.c: In function 'btrfs_ioctl_send': fs/btrfs/send.c:8208:44: warning: 'kvcalloc' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args] 8208 | sctx->clone_roots = kvcalloc(sizeof(*sctx->clone_roots), | ^ Since 'n' and 'size' arguments of 'kvcalloc()' are multiplied to calculate the final size, their actual order doesn't affect the result and so this is not a bug. But it's still worth to fix it. Signed-off-by: Dmitry Antipov Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Greg Kroah-Hartman --- diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index b430e03260fbf..651f0865bb0df 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -8222,8 +8222,8 @@ long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg) goto out; } - sctx->clone_roots = kvcalloc(sizeof(*sctx->clone_roots), - arg->clone_sources_count + 1, + sctx->clone_roots = kvcalloc(arg->clone_sources_count + 1, + sizeof(*sctx->clone_roots), GFP_KERNEL); if (!sctx->clone_roots) { ret = -ENOMEM;