This is a note to let you know that I've just added the patch titled
btrfs: fix kvcalloc() arguments order in btrfs_ioctl_send()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
btrfs-fix-kvcalloc-arguments-order-in-btrfs_ioctl_send.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6ff09b6b8c2fb6b3edda4ffaa173153a40653067 Mon Sep 17 00:00:00 2001
From: Dmitry Antipov <dmantipov@xxxxxxxxx>
Date: Thu, 21 Dec 2023 11:47:45 +0300
Subject: btrfs: fix kvcalloc() arguments order in btrfs_ioctl_send()
From: Dmitry Antipov <dmantipov@xxxxxxxxx>
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 <dmantipov@xxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/send.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -7612,8 +7612,8 @@ long btrfs_ioctl_send(struct file *mnt_f
sctx->waiting_dir_moves = RB_ROOT;
sctx->orphan_dirs = RB_ROOT;
- 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;
Patches currently in stable-queue which might be from dmantipov@xxxxxxxxx are
queue-5.15/btrfs-fix-kvcalloc-arguments-order-in-btrfs_ioctl_send.patch
