The next-20250226 release gets an uninitialized-variable warning from the move_mount syscall in builds with clang 19.1.5. This variable is in fact assigned only if the MOVE_MOUNT_F_EMPTY_PATH flag is set, but is then unconditionally passed to getname_maybe_null(), which unconditionally references it. This patch simply sets uflags to zero in the same manner as is done for lflags, which makes rcutorture happy, but might or might not be a proper patch. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx> Cc: Christian Brauner <brauner@xxxxxxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: <linux-fsdevel@xxxxxxxxxxxxxxx> Cc: <linux-kernel@xxxxxxxxxxxxxxx> --- namespace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index 663bacefddfa6..80505d533cd23 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -4617,6 +4617,7 @@ SYSCALL_DEFINE5(move_mount, if (flags & MOVE_MOUNT_BENEATH) mflags |= MNT_TREE_BENEATH; lflags = 0; + uflags = 0; if (flags & MOVE_MOUNT_F_SYMLINKS) lflags |= LOOKUP_FOLLOW; if (flags & MOVE_MOUNT_F_AUTOMOUNTS) lflags |= LOOKUP_AUTOMOUNT; if (flags & MOVE_MOUNT_F_EMPTY_PATH) uflags = AT_EMPTY_PATH; @@ -4625,6 +4626,7 @@ SYSCALL_DEFINE5(move_mount, return PTR_ERR(from_name); lflags = 0; + uflags = 0; if (flags & MOVE_MOUNT_T_SYMLINKS) lflags |= LOOKUP_FOLLOW; if (flags & MOVE_MOUNT_T_AUTOMOUNTS) lflags |= LOOKUP_AUTOMOUNT; if (flags & MOVE_MOUNT_T_EMPTY_PATH) uflags = AT_EMPTY_PATH;
