================================================ WARNING: lock held when returning to user space! 4.18.0+ #197 Not tainted ------------------------------------------------ syz-executor0/3310 is leaving the kernel with locks still held! 1 lock held by syz-executor0/3310: #0: 000000003461b082 (&fi->mutex){+.+.}, at: fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:363 semctl(GETNCNT/GETZCNT) is since 3.16 Single Unix Specification compliant. The task syz-executor0 (3399) triggered the difference, watch for misbehavior.