INFO: task kworker/u8:4:3212 blocked for more than 430 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4    state:D stack:0     pid:3212  tgid:3212  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
Call Trace:
[<ffffffff86393030>] context_switch kernel/sched/core.c:5256 [inline]
[<ffffffff86393030>] __schedule+0xf14/0x4220 kernel/sched/core.c:6863
[<ffffffff863963f0>] __schedule_loop kernel/sched/core.c:6945 [inline]
[<ffffffff863963f0>] schedule+0xb4/0x334 kernel/sched/core.c:6960
[<ffffffff86396772>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7017
[<ffffffff863a0404>] rwsem_down_write_slowpath+0x4b4/0xe20 kernel/locking/rwsem.c:1185
[<ffffffff863a0ee2>] __down_write_common kernel/locking/rwsem.c:1317 [inline]
[<ffffffff863a0ee2>] __down_write kernel/locking/rwsem.c:1326 [inline]
[<ffffffff863a0ee2>] down_write+0x172/0x190 kernel/locking/rwsem.c:1591
[<ffffffff83281b52>] wg_noise_handshake_create_initiation+0xee/0x5e4 drivers/net/wireguard/noise.c:530
[<ffffffff8328c0a6>] wg_packet_send_handshake_initiation+0x182/0x2e8 drivers/net/wireguard/send.c:34
[<ffffffff8328cf3e>] wg_packet_handshake_send_worker+0x1e/0x30 drivers/net/wireguard/send.c:51
[<ffffffff801c2454>] process_one_work+0x930/0x1e14 kernel/workqueue.c:3257
[<ffffffff801c3e78>] process_scheduled_works kernel/workqueue.c:3340 [inline]
[<ffffffff801c3e78>] worker_thread+0x540/0xcbc kernel/workqueue.c:3421
[<ffffffff801e2e40>] kthread+0x37c/0x778 kernel/kthread.c:463
[<ffffffff80069946>] ret_from_fork_kernel+0x2a/0xbbc arch/riscv/kernel/process.c:228
[<ffffffff863b1f9e>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:363

Showing all locks held in the system:
2 locks held by kworker/1:0/24:
1 lock held by khungtaskd/33:
 #0: ffffffff885ec0a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a8 kernel/locking/lockdep.c:6771
5 locks held by kworker/0:2/806:
1 lock held by syslogd/3013:
2 locks held by getty/3163:
 #0: ffffaf801921e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x48 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3be/0x1324 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/3195:
2 locks held by kworker/1:1/3204:
4 locks held by kworker/u8:4/3212:
 #0: ffffaf801bcee148 ((wq_completion)wg-kex-wg1){+.+.}-{0:0}, at: process_one_work+0x814/0x1e14 kernel/workqueue.c:3232
 #1: ffff8f80099b7b70 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work+0x83c/0x1e14 kernel/workqueue.c:3232
 #2: ffffaf801a809308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0xe4/0x5e4 drivers/net/wireguard/noise.c:529
 #3: ffffaf80313020f0 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0xee/0x5e4 drivers/net/wireguard/noise.c:530
3 locks held by kworker/u8:5/3297:
 #0: ffffaf801bcee148 ((wq_completion)wg-kex-wg1){+.+.}-{0:0}, at: process_one_work+0x814/0x1e14 kernel/workqueue.c:3232
 #1: ffff8f8009b17b70 ((work_completion)(&peer->clear_peer_work)){+.+.}-{0:0}, at: process_one_work+0x83c/0x1e14 kernel/workqueue.c:3232
 #2: ffffaf80313020f0 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_clear+0x26/0xb8 drivers/net/wireguard/noise.c:90
2 locks held by kworker/1:3/3675:
3 locks held by kworker/u8:7/3769:
4 locks held by kworker/0:4/3782:
 #0: ffffaf8022115d48 ((wq_completion)wg-kex-wg1#2){+.+.}-{0:0}, at: process_one_work+0x814/0x1e14 kernel/workqueue.c:3232
 #1: ffff8f800a397b70 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __asm__ ("" : "=r"(__ptr) : "0"((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker))))); (typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_one_work+0x83c/0x1e14 kernel/workqueue.c:3232
 #2: ffffaf801a809308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x138/0x8f8 drivers/net/wireguard/noise.c:598
 #3: ffffaf80313020f0 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x4bc/0x8f8 drivers/net/wireguard/noise.c:632
4 locks held by kworker/1:4/3827:
2 locks held by kworker/0:6/3828:
2 locks held by kworker/1:5/3829:
1 lock held by kworker/1:6/3839:
2 locks held by kworker/1:8/3853:
2 locks held by kworker/1:10/3908:
2 locks held by kworker/u8:0/3911:
2 locks held by kworker/0:5/3931:
3 locks held by kworker/u8:1/3960:
2 locks held by syz.0.70/4003:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 33 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007ad5e>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:149
[<ffffffff800032f8>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:155
[<ffffffff80060ca4>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80060ca4>] dump_stack_lvl+0x114/0x1ac lib/dump_stack.c:120
[<ffffffff80060d58>] dump_stack+0x1c/0x28 lib/dump_stack.c:129
[<ffffffff8634993e>] nmi_cpu_backtrace+0x25e/0x3b0 lib/nmi_backtrace.c:113
[<ffffffff86349d2e>] nmi_trigger_cpumask_backtrace+0x29e/0x460 lib/nmi_backtrace.c:62
[<ffffffff800885c8>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:350
[<ffffffff8635e334>] trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
[<ffffffff8635e334>] __sys_info lib/sys_info.c:157 [inline]
[<ffffffff8635e334>] sys_info+0x20c/0x254 lib/sys_info.c:165
[<ffffffff80505944>] check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
[<ffffffff80505944>] watchdog+0xb44/0x1184 kernel/hung_task.c:515
[<ffffffff801e2e40>] kthread+0x37c/0x778 kernel/kthread.c:463
[<ffffffff80069946>] ret_from_fork_kernel+0x2a/0xbbc arch/riscv/kernel/process.c:228
[<ffffffff863b1f9e>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:363
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 3769 Comm: kworker/u8:7 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: riscv-virtio,qemu (DT)
Workqueue: events_unbound nsim_dev_trap_report_work
epc : preempt_count include/asm-generic/preempt.h:11 [inline]
epc : should_resched include/asm-generic/preempt.h:77 [inline]
epc : __local_bh_enable_ip+0x222/0x588 kernel/softirq.c:457
 ra : __local_bh_enable_ip+0x21e/0x588 kernel/softirq.c:455
epc : ffffffff80165826 ra : ffffffff80165822 sp : ffff8f8000016aa0
 gp : ffffffff89f9af80 tp : ffffaf8030c0cf80 t0 : ffff8f8000016ee8
 t1 : ffffffff8007a304 t2 : ffff8f80000166c0 s0 : ffff8f8000016af0
 s1 : 0000000000000103 a0 : 0000000000000001 a1 : ffffffff87ef7658
 a2 : 0000000000000003 a3 : 0000000000000001 a4 : 0000000000001000
 a5 : 000000000008cac6 a6 : 0000000000000000 a7 : 0000000041b58ab3
 s2 : ffffaf8030c0cf80 s3 : ffffffff85a70f4c s4 : 0000000000000001
 s5 : ffffffff913696a8 s6 : 1ffff5f0061819f1 s7 : 0000000000000001
 s8 : ffffaf8013abdaa0 s9 : ffffaf8030b53700 s10: ffff8f8000016d20
 s11: ffffffff877a9180 t3 : ffffffff87d88058 t4 : 0000000000001fff
 t5 : 00000000000000c8 t6 : 0000000000000002 ssp : 0000000000000000
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff80165826>] arch_local_irq_enable arch/riscv/include/asm/irqflags.h:21 [inline]
[<ffffffff80165826>] __local_bh_enable_ip+0x222/0x588 kernel/softirq.c:455
[<ffffffff85a70f70>] local_bh_enable include/linux/bottom_half.h:33 [inline]
[<ffffffff85a70f70>] ipt_do_table+0xda0/0x1b5c net/ipv4/netfilter/ip_tables.c:357
[<ffffffff85a74d72>] iptable_mangle_hook+0x5e/0x400 net/ipv4/netfilter/iptable_mangle.c:80
[<ffffffff8558b628>] nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
[<ffffffff8558b628>] nf_hook_slow+0xac/0x208 net/netfilter/core.c:623
[<ffffffff857d7f7c>] nf_hook include/linux/netfilter.h:273 [inline]
[<ffffffff857d7f7c>] NF_HOOK_COND include/linux/netfilter.h:306 [inline]
[<ffffffff857d7f7c>] ip_output+0x5a0/0x884 net/ipv4/ip_output.c:438
[<ffffffff857d8e62>] dst_output include/net/dst.h:464 [inline]
[<ffffffff857d8e62>] ip_local_out+0xa6/0x17c net/ipv4/ip_output.c:131
[<ffffffff856495f0>] synproxy_send_tcp.isra.0+0x3f8/0x5dc net/netfilter/nf_synproxy_core.c:439
[<ffffffff8564b2fc>] synproxy_send_client_synack+0x604/0x868 net/netfilter/nf_synproxy_core.c:484
[<ffffffff8572ad8e>] nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:59 [inline]
[<ffffffff8572ad8e>] nft_synproxy_do_eval+0x84e/0xa5c net/netfilter/nft_synproxy.c:141
[<ffffffff8572affc>] nft_synproxy_eval+0x28/0x50 net/netfilter/nft_synproxy.c:247
[<ffffffff8565711a>] expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
[<ffffffff8565711a>] nft_do_chain+0x30a/0x149c net/netfilter/nf_tables_core.c:285
[<ffffffff856ba21a>] nft_do_chain_inet+0xfe/0x328 net/netfilter/nft_chain_filter.c:161
[<ffffffff8558b628>] nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
[<ffffffff8558b628>] nf_hook_slow+0xac/0x208 net/netfilter/core.c:623
[<ffffffff857bcf4a>] nf_hook include/linux/netfilter.h:273 [inline]
[<ffffffff857bcf4a>] NF_HOOK include/linux/netfilter.h:316 [inline]
[<ffffffff857bcf4a>] ip_local_deliver+0x2d2/0x55c net/ipv4/ip_input.c:262
[<ffffffff857bae78>] dst_input include/net/dst.h:474 [inline]
[<ffffffff857bae78>] ip_rcv_finish+0x1ac/0x2a4 net/ipv4/ip_input.c:453
[<ffffffff857bd2a6>] NF_HOOK include/linux/netfilter.h:318 [inline]
[<ffffffff857bd2a6>] NF_HOOK include/linux/netfilter.h:312 [inline]
[<ffffffff857bd2a6>] ip_rcv+0xd2/0x458 net/ipv4/ip_input.c:573
[<ffffffff8516b75e>] __netif_receive_skb_one_core+0x106/0x170 net/core/dev.c:6137
[<ffffffff8516b9e4>] __netif_receive_skb+0x28/0x12c net/core/dev.c:6250
[<ffffffff8516cc52>] process_backlog+0x58e/0x1be0 net/core/dev.c:6602
[<ffffffff8516fefe>] __napi_poll.constprop.0+0x9e/0x4a8 net/core/dev.c:7666
[<ffffffff851719a2>] napi_poll net/core/dev.c:7729 [inline]
[<ffffffff851719a2>] net_rx_action+0x9ea/0xde4 net/core/dev.c:7881
[<ffffffff80163d5e>] handle_softirqs+0x442/0x1198 kernel/softirq.c:622
[<ffffffff80164ed2>] __do_softirq kernel/softirq.c:656 [inline]
[<ffffffff80164ed2>] invoke_softirq kernel/softirq.c:496 [inline]
[<ffffffff80164ed2>] __irq_exit_rcu+0x2de/0x534 kernel/softirq.c:723
[<ffffffff80165d7c>] irq_exit_rcu+0x10/0xf4 kernel/softirq.c:739
[<ffffffff86385f6c>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:446
[<ffffffff863b1fe6>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:396