INFO: task syz.1.155:4878 blocked for more than 440 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.155       state:D stack:0     pid:4878  tgid:4877  ppid:3228   task_flags:0x40054c flags:0x0000000c
Call Trace:
[<ffffffff8641aae4>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff8641aae4>] __schedule+0x1042/0x4106 kernel/sched/core.c:6961
[<ffffffff8641dc6c>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff8641dc6c>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff8641e5f0>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7115
[<ffffffff864299ec>] rwsem_down_read_slowpath+0x58a/0x9f2 kernel/locking/rwsem.c:1086
[<ffffffff86429f38>] __down_read_common kernel/locking/rwsem.c:1261 [inline]
[<ffffffff86429f38>] __down_read kernel/locking/rwsem.c:1274 [inline]
[<ffffffff86429f38>] down_read+0xe4/0x45e kernel/locking/rwsem.c:1539
[<ffffffff8015ffe6>] mmap_read_lock include/linux/mmap_lock.h:453 [inline]
[<ffffffff8015ffe6>] exit_mm kernel/exit.c:558 [inline]
[<ffffffff8015ffe6>] do_exit+0x6c2/0x28e0 kernel/exit.c:949
[<ffffffff80162764>] do_group_exit+0xd4/0x26c kernel/exit.c:1102
[<ffffffff8019b3ba>] get_signal+0x207c/0x22fc kernel/signal.c:3034
[<ffffffff80072104>] arch_do_signal_or_restart+0x776/0x25d6 arch/riscv/kernel/signal.c:431
[<ffffffff803c2d62>] exit_to_user_mode_loop+0x90/0x134 kernel/entry/common.c:40
[<ffffffff864101f4>] exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
[<ffffffff864101f4>] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
[<ffffffff864101f4>] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
[<ffffffff864101f4>] do_trap_ecall_u+0x3f0/0x530 arch/riscv/kernel/traps.c:357
[<ffffffff86439abe>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198

Showing all locks held in the system:
1 lock held by kthreadd/2:
4 locks held by kworker/0:1/11:
1 lock held by kworker/R-mm_pe/13:
6 locks held by kworker/u10:0/27:
4 locks held by kworker/u9:1/28:
 #0: ffffaf801eaa5948 ((wq_completion)wg-kex-wg2#3){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3211
 #1: ffff8f80001e7b70 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3211
 #2: ffffaf801c44d308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0xe8/0x64e drivers/net/wireguard/noise.c:529
 #3: ffffaf80199baad8 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0xf2/0x64e drivers/net/wireguard/noise.c:530
1 lock held by khungtaskd/37:
 #0: ffffffff885dd6e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6771
3 locks held by kworker/u10:3/61:
1 lock held by jbd2/vda-8/2995:
1 lock held by klogd/3018: