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sysfs_rename/move_dir() have the following bugs. - On dentry lookup failure, kfree() is called on ERR_PTR() value. - sysfs_move_dir() has an extra dput() on success path. Fix them. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>