================================================ [ BUG: lock held when returning to user space! ] 4.9.124-g09eb2ba #31 Not tainted ------------------------------------------------ syz-executor4/22308 is leaving the kernel with locks still held! 1 lock held by syz-executor4/22308: #0: (&fi->mutex){+.+.+.}, at: [] fuse_lock_inode+0xa2/0xd0 fs/fuse/inode.c:362 ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format.