[PATCH] btrfs: fix 64bit compat send ioctl arguments not initializing version member

[David Sterba <dsterba@suse.com>]

When the send protocol versioning was added in 5.16 e77fbf990316
("btrfs: send: prepare for v2 protocol"), the 32/64bit compat code was
not updated (added by 2351f431f727 ("btrfs: fix send ioctl on 32bit with
64bit kernel")), missing the version struct member. The compat code is
probably rarely used, nobody reported any bugs.

Found by tool https://github.com/jirislaby/clang-struct .

Fixes: 2351f431f727 ("btrfs: fix send ioctl on 32bit with 64bit kernel")
CC: stable@vger.kernel.org # 6.1+
Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/ioctl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index dfe257e1845b..4e50b62db2a8 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -4356,6 +4356,7 @@ static int _btrfs_ioctl_send(struct inode *inode, void __user *argp, bool compat
 		arg->clone_sources = compat_ptr(args32.clone_sources);
 		arg->parent_root = args32.parent_root;
 		arg->flags = args32.flags;
+		arg->version = args32.version;
 		memcpy(arg->reserved, args32.reserved,
 		       sizeof(args32.reserved));
 #else
-- 
2.42.1