From: David Sterba dsterba@suse.com
stable inclusion from stable-v6.6.5 commit 4a1a4bf2261e0772d780a98fabfbed718b83ba3a category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8N21P
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 5de0434bc064606d6b7467ec3e5ad22963a18c04 upstream.
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: e77fbf990316 ("btrfs: send: prepare for v2 protocol") CC: stable@vger.kernel.org # 6.1+ Reviewed-by: Filipe Manana fdmanana@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- fs/btrfs/ioctl.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f4a929b1b246..e2f00e084c88 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -4349,6 +4349,7 @@ 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