===================================== WARNING: bad unlock balance detected! 4.14.103+ #18 Not tainted ------------------------------------- migration/1/16 is trying to release lock (&rq->lock) at: [] migration_cpu_stop+0x2dd/0x430 kernel/sched/core.c:1036 but there are no more locks to release! other info that might help us debug this: 1 lock held by migration/1/16: #0: (&p->pi_lock){-.-.}, at: [] migration_cpu_stop+0xe1/0x430 kernel/sched/core.c:1027 stack backtrace: CPU: 1 PID: 16 Comm: migration/1 Not tainted 4.14.103+ #18 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x10e lib/dump_stack.c:53 print_unlock_imbalance_bug kernel/locking/lockdep.c:3548 [inline] print_unlock_imbalance_bug.cold+0x110/0x11f kernel/locking/lockdep.c:3525 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=8241 sclass=netlink_route_socket pig=25879 comm=syz-executor.3 ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! FAT-fs (loop3): Unrecognized mount option "func=POLICY_CHECK" or missing value input: syz1 as /devices/virtual/input/input29 input: syz1 as /devices/virtual/input/input30 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12297 sclass=netlink_route_socket pig=26810 comm=syz-executor.3 FAT-fs (loop3): bogus logical sector size 56200 FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): bogus logical sector size 56200 FAT-fs (loop3): Can't find a valid FAT filesystem