INFO: task syz.0.77:4634 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.77        state:D stack:0     pid:4634  tgid:4633  ppid:3227   task_flags:0x400140 flags:0x00000002
Call Trace:
[<ffffffff8652c3f0>] context_switch kernel/sched/core.c:5510 [inline]
[<ffffffff8652c3f0>] __schedule+0x1de4/0x4ff4 kernel/sched/core.c:7234
[<ffffffff8652f6ae>] __schedule_loop kernel/sched/core.c:7311 [inline]
[<ffffffff8652f6ae>] schedule+0xae/0x260 kernel/sched/core.c:7326
[<ffffffff80ff6f26>] do_uevent+0x432/0x5d4 fs/dlm/lockspace.c:206
[<ffffffff80ff86d8>] new_lockspace fs/dlm/lockspace.c:583 [inline]
[<ffffffff80ff86d8>] __dlm_new_lockspace+0x157c/0x1f9e fs/dlm/lockspace.c:638
[<ffffffff80ff9830>] dlm_new_user_lockspace+0x62/0x8c fs/dlm/lockspace.c:671
[<ffffffff810336f2>] device_create_lockspace fs/dlm/user.c:414 [inline]
[<ffffffff810336f2>] device_write+0x868/0x1a40 fs/dlm/user.c:606
[<ffffffff80ce7d36>] vfs_write+0x308/0x1020 fs/read_write.c:685
[<ffffffff80ce8e58>] ksys_write+0x126/0x244 fs/read_write.c:739
[<ffffffff80ce8fe4>] __do_sys_write fs/read_write.c:750 [inline]
[<ffffffff80ce8fe4>] __se_sys_write fs/read_write.c:747 [inline]
[<ffffffff80ce8fe4>] __riscv_sys_write+0x6e/0xa0 fs/read_write.c:747
[<ffffffff80078f30>] syscall_handler+0x92/0x114 arch/riscv/include/asm/syscall.h:112
[<ffffffff8651fb84>] do_trap_ecall_u+0x3e4/0x636 arch/riscv/kernel/traps.c:345
[<ffffffff8654beb0>] handle_exception+0x168/0x174 arch/riscv/kernel/entry.S:237

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffffffff889f4020 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff889f4020 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3e/0x1a0 kernel/locking/lockdep.c:6775
2 locks held by syslogd/3029:
1 lock held by klogd/3033:
2 locks held by getty/3188:
 #0: ffffaf801bf930a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3be/0x12fc drivers/tty/n_tty.c:2211
2 locks held by syz-executor/3215:
2 locks held by kworker/u8:7/3459:
 #0: ffffaf801211c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1068/0x20a0 kernel/workqueue.c:3297
 #1: ffff8f8009597b50 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x826/0x20a0 kernel/workqueue.c:3298
2 locks held by kworker/0:3/3788:
1 lock held by syz.0.77/4634:
 #0: ffffffff916f0bc0 (&ls_lock){+.+.}-{4:4}, at: __dlm_new_lockspace+0xbe/0x1f9e fs/dlm/lockspace.c:632
1 lock held by dlm_recoverd/4641:
 #0: ffffaf801dbcea18 (&ls->ls_in_recovery){+.+.}-{4:4}, at: dlm_recoverd+0xc6/0x24a8 fs/dlm/recoverd.c:400
3 locks held by kworker/1:2/5109:
2 locks held by syz.1.102/5172:
2 locks held by modprobe/5174:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007c6e4>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:149
[<ffffffff80003112>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:155
[<ffffffff80060ea4>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80060ea4>] dump_stack_lvl+0x114/0x1aa lib/dump_stack.c:120
[<ffffffff80060f56>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff864dff34>] nmi_cpu_backtrace+0x25e/0x3ae lib/nmi_backtrace.c:122
[<ffffffff864e0330>] nmi_trigger_cpumask_backtrace+0x2ac/0x4ee lib/nmi_backtrace.c:65
[<ffffffff8008a6e6>] arch_trigger_cpumask_backtrace+0x2c/0x3e arch/riscv/kernel/smp.c:349
[<ffffffff864f489e>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff864f489e>] __sys_info lib/sys_info.c:157 [inline]
[<ffffffff864f489e>] sys_info+0x20c/0x252 lib/sys_info.c:165
[<ffffffff8052fe98>] check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
[<ffffffff8052fe98>] watchdog+0xa26/0x1282 kernel/hung_task.c:561
[<ffffffff801f3914>] kthread+0x312/0x438 kernel/kthread.c:436
[<ffffffff8006a1ee>] ret_from_fork_kernel+0x94/0xef6 arch/riscv/kernel/process.c:230
[<ffffffff8654bfea>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:368
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3788 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
epc : finish_task_switch.isra.0+0x20c/0xace kernel/sched/core.c:5361
 ra : raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline]
 ra : finish_lock_switch kernel/sched/core.c:5241 [inline]
 ra : finish_task_switch.isra.0+0x208/0xace kernel/sched/core.c:5359
epc : ffffffff8022a402 ra : ffffffff8022a3fe sp : ffff8f8009b57740
 gp : ffffffff8a4a7c60 tp : ffffaf801acd3580 t0 : ffffaf8072c1d3d0
 t1 : ffffffff8007bc8e t2 : ffffaf8072c1d7a8 s0 : ffff8f8009b577c0
 s1 : ffffaf8072c2fb00 a0 : 0000000000000000 a1 : ffffffff88216318
 a2 : 0000000000000006 a3 : 0000000000000001 a4 : 0000000000001000
 a5 : 0000000000034085 a6 : 0000000000000003 a7 : 0000000041b58ab3
 s2 : ffffaf8072c308c0 s3 : ffffaf801c1c3580 s4 : 0000000000000000
 s5 : 0000000000000000 s6 : 0000000000000008 s7 : 1ffff5f00e586118
 s8 : 1ffff5f00e5860d6 s9 : ffffaf801bf530bc s10: 0000000000000000
 s11: ffffaf801bf51ac0 t3 : ffffffff8809bec8 t4 : fffff5ef0e585f69
 t5 : fffff5ef0e585f6a t6 : 0000000000000002 ssp : 0000000000000000
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8022a402>] arch_local_irq_enable arch/riscv/include/asm/irqflags.h:21 [inline]
[<ffffffff8022a402>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline]
[<ffffffff8022a402>] finish_lock_switch kernel/sched/core.c:5241 [inline]
[<ffffffff8022a402>] finish_task_switch.isra.0+0x20c/0xace kernel/sched/core.c:5359
[<ffffffff8652c3f8>] context_switch kernel/sched/core.c:5513 [inline]
[<ffffffff8652c3f8>] __schedule+0x1dec/0x4ff4 kernel/sched/core.c:7234
[<ffffffff8652fb6a>] preempt_schedule_common kernel/sched/core.c:7413 [inline]
[<ffffffff8652fb6a>] preempt_schedule+0xaa/0x1ae kernel/sched/core.c:7437
[<ffffffff86547b20>] __raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline]
[<ffffffff86547b20>] _raw_spin_unlock+0x7c/0x94 kernel/locking/spinlock.c:190
[<ffffffff8336aa92>] spin_unlock include/linux/spinlock.h:390 [inline]
[<ffffffff8336aa92>] wg_ratelimiter_gc_entries+0x308/0x4cc drivers/net/wireguard/ratelimiter.c:76
[<ffffffff801d06ee>] process_one_work+0x90a/0x20a0 kernel/workqueue.c:3322
[<ffffffff801d3d24>] process_scheduled_works kernel/workqueue.c:3405 [inline]
[<ffffffff801d3d24>] worker_thread+0x532/0xcaa kernel/workqueue.c:3486
[<ffffffff801f3914>] kthread+0x312/0x438 kernel/kthread.c:436
[<ffffffff8006a1ee>] ret_from_fork_kernel+0x94/0xef6 arch/riscv/kernel/process.c:230
[<ffffffff8654bfea>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:368