================================================ WARNING: lock held when returning to user space! 4.14.294-syzkaller #0 Not tainted ------------------------------------------------ syz-executor.2/9986 is leaving the kernel with locks still held! 1 lock held by syz-executor.2/9986: #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1419 audit: type=1804 audit(1664332267.017:8): pid=9994 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir1478964926/syzkaller.6G73fL/29/bus" dev="sda1" ino=13952 res=1 audit: type=1804 audit(1664332267.057:9): pid=9994 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir1478964926/syzkaller.6G73fL/29/bus" dev="sda1" ino=13952 res=1 audit: type=1804 audit(1664332267.117:10): pid=10012 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir1478964926/syzkaller.6G73fL/30/bus" dev="sda1" ino=13917 res=1 audit: type=1804 audit(1664332267.117:11): pid=10012 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir1478964926/syzkaller.6G73fL/30/bus" dev="sda1" ino=13917 res=1