From 6ff09b6b8c2fb6b3edda4ffaa173153a40653067 Mon Sep 17 00:00:00 2001 From: Dmitry Antipov Date: Thu, 21 Dec 2023 11:47:45 +0300 Subject: btrfs: fix kvcalloc() arguments order in btrfs_ioctl_send() 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 --- fs/btrfs/send.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/btrfs/send.c') diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 4e36550618e5..2d7519a6ce72 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -8205,8 +8205,8 @@ 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; -- cgit v1.2.3 From f884a9f9e59206a2d41f265e7e403f080d10b493 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Wed, 10 Jan 2024 17:48:44 +0100 Subject: btrfs: send: return EOPNOTSUPP on unknown flags When some ioctl flags are checked we return EOPNOTSUPP, like for BTRFS_SCRUB_SUPPORTED_FLAGS, BTRFS_SUBVOL_CREATE_ARGS_MASK or fallocate modes. The EINVAL is supposed to be for a supported but invalid values or combination of options. Fix that when checking send flags so it's consistent with the rest. CC: stable@vger.kernel.org # 4.14+ Link: https://lore.kernel.org/linux-btrfs/CAL3q7H5rryOLzp3EKq8RTbjMHMHeaJubfpsVLF6H4qJnKCUR1w@mail.gmail.com/ Reviewed-by: Filipe Manana Signed-off-by: David Sterba --- fs/btrfs/send.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/send.c') diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 2d7519a6ce72..7902298c1f25 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -8111,7 +8111,7 @@ long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg) } if (arg->flags & ~BTRFS_SEND_FLAG_MASK) { - ret = -EINVAL; + ret = -EOPNOTSUPP; goto out; } -- cgit v1.2.3