NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): mounting unchecked fs NILFS (loop4): invalid segment: Magic number mismatch NILFS (loop4): unable to fall back to spare super block NILFS (loop4): error -22 while searching super root BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 6852 Comm: syz-executor.4 Not tainted 4.14.223-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 add_chain_cache kernel/locking/lockdep.c:2303 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2415 [inline] validate_chain kernel/locking/lockdep.c:2435 [inline] __lock_acquire.cold+0x19a/0x97c kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 lock_hrtimer_base kernel/time/hrtimer.c:148 [inline] hrtimer_start_range_ns+0x77/0x10b0 kernel/time/hrtimer.c:955 hrtimer_start include/linux/hrtimer.h:377 [inline] perf_swevent_start_hrtimer kernel/events/core.c:8779 [inline] perf_swevent_start_hrtimer kernel/events/core.c:8762 [inline] cpu_clock_event_start+0x100/0x160 kernel/events/core.c:8837 cpu_clock_event_add+0x37/0x40 kernel/events/core.c:8849 event_sched_in+0x498/0xdb0 kernel/events/core.c:2134 group_sched_in+0xfb/0x400 kernel/events/core.c:2174 ctx_flexible_sched_in kernel/events/core.c:3199 [inline] ctx_sched_in+0x1303/0x1860 kernel/events/core.c:3245 perf_event_sched_in+0x69/0xa0 kernel/events/core.c:2332 perf_event_context_sched_in kernel/events/core.c:3285 [inline] __perf_event_task_sched_in+0x5a3/0x8c0 kernel/events/core.c:3324 perf_event_task_sched_in include/linux/perf_event.h:1087 [inline] finish_task_switch+0x3c9/0x610 kernel/sched/core.c:2664 context_switch kernel/sched/core.c:2811 [inline] __schedule+0x893/0x1de0 kernel/sched/core.c:3384 preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:3611 retint_kernel+0x1b/0x2d RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:4001 RSP: 0018:ffff8880aaa0fa08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1251 RBX: ffff8880572ce280 RCX: 0000000000007491 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff888093c78d28 R08: ffffffff8b9c3f48 R09: 0000000000040ae5 R10: ffff8880572ceb30 R11: ffff8880572ce280 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 kernfs_drain fs/kernfs/dir.c:468 [inline] __kernfs_remove+0x727/0x920 fs/kernfs/dir.c:1293 kernfs_remove+0x1f/0x30 fs/kernfs/dir.c:1328 sysfs_remove_dir+0xb1/0xf0 fs/sysfs/dir.c:97 kobject_del lib/kobject.c:575 [inline] kobject_del+0x43/0xf0 lib/kobject.c:567 nilfs_sysfs_delete_segctor_group fs/nilfs2/sysfs.c:720 [inline] nilfs_sysfs_delete_device_group+0xec/0x170 fs/nilfs2/sysfs.c:1065 destroy_nilfs+0x5e/0x100 fs/nilfs2/the_nilfs.c:98 nilfs_fill_super fs/nilfs2/super.c:1118 [inline] nilfs_mount+0x70a/0xd00 fs/nilfs2/super.c:1331 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x46741a RSP: 002b:00007f45674e4fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046741a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f45674e5000 RBP: 00007f45674e5040 R08: 00007f45674e5040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f45674e5000 R15: 0000000020000040 Bluetooth: hci1 command 0x041b tx timeout NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): mounting unchecked fs NILFS (loop4): invalid segment: Magic number mismatch NILFS (loop4): unable to fall back to spare super block NILFS (loop4): error -22 while searching super root Bluetooth: hci4 command 0x0406 tx timeout new mount options do not match the existing superblock, will be ignored device batadv0 entered promiscuous mode Y4`Ҙ: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode Y4`Ҙ: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode Y4`Ҙ: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode Bluetooth: hci1 command 0x040f tx timeout lo: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode Y4`Ҙ: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode lo: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode Y4`Ҙ: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode device batadv0 entered promiscuous mode lo: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode caif_hsicaif_hsi_newlink: failed to get the cfhsi_ops caif_hsicaif_hsi_newlink: failed to get the cfhsi_ops caif_hsicaif_hsi_newlink: failed to get the cfhsi_ops caif_hsicaif_hsi_newlink: failed to get the cfhsi_ops Bluetooth: hci1 command 0x0419 tx timeout