INFO: task kworker/u9:4:4626 blocked for more than 430 seconds.
      Not tainted 6.14.0-rc1-syzkaller-g245aece3750d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:4    state:D stack:0     pid:4626  tgid:4626  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events_unbound free_mem_alloc_deferred
Call Trace:
[<ffffffff86245be6>] context_switch kernel/sched/core.c:5377 [inline]
[<ffffffff86245be6>] __schedule+0xe4c/0x3d70 kernel/sched/core.c:6764
[<ffffffff86248bce>] __schedule_loop kernel/sched/core.c:6841 [inline]
[<ffffffff86248bce>] schedule+0xc4/0x324 kernel/sched/core.c:6856
[<ffffffff8625ce86>] schedule_timeout+0x1c6/0x28a kernel/time/sleep_timeout.c:75
[<ffffffff8624a70a>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff8624a70a>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff8624aa10>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff8624aa10>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff803682e2>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:3809
[<ffffffff806e029c>] free_mem_alloc kernel/bpf/memalloc.c:702 [inline]
[<ffffffff806e029c>] free_mem_alloc_deferred+0x24/0xee kernel/bpf/memalloc.c:713
[<ffffffff801b365c>] process_one_work+0x96a/0x1f3a kernel/workqueue.c:3236
[<ffffffff801b666e>] process_scheduled_works kernel/workqueue.c:3317 [inline]
[<ffffffff801b666e>] worker_thread+0x5be/0xdc6 kernel/workqueue.c:3398
[<ffffffff801d3ae2>] kthread+0x37e/0x7b6 kernel/kthread.c:464
[<ffffffff86261292>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:327

Showing all locks held in the system:
1 lock held by khungtaskd/37:
 #0: ffffffff883d7b80 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x68/0x288 kernel/locking/lockdep.c:6742
2 locks held by getty/3146:
 #0: ffffaf801cb760a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
2 locks held by syz-executor/3172:
2 locks held by kworker/1:1/3770:
2 locks held by kworker/1:2/4239:
4 locks held by kworker/1:5/4241:
2 locks held by kworker/1:6/4611:
3 locks held by kworker/u9:4/4626:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f3a kernel/workqueue.c:3211
 #1: ffff8f8007367bd0 ((work_completion)(&copy->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f3a kernel/workqueue.c:3211
 #2: ffffffff883e7d00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3741
3 locks held by kworker/u9:5/4630:
1 lock held by syz.1.319/4669:
 #0: ffffffff883e7d00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3741
2 locks held by kworker/0:0/4684:
2 locks held by kworker/1:9/4690:
2 locks held by kworker/1:11/4789:
2 locks held by kworker/u9:8/4909:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f3a kernel/workqueue.c:3211
 #1: ffff8f8004d67bd0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f3a kernel/workqueue.c:3211
2 locks held by kworker/1:13/4960:
2 locks held by syz.0.353/5122:
2 locks held by modprobe/5123:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller-g245aece3750d #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80074518>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff80003206>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff8005fa4c>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff8005fa4c>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff8005fae0>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff861ff5f8>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff861ff8b0>] nmi_trigger_cpumask_backtrace+0x2b6/0x458 lib/nmi_backtrace.c:62
[<ffffffff80080416>] arch_trigger_cpumask_backtrace+0x2c/0x3e arch/riscv/kernel/smp.c:348
[<ffffffff804d9498>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff804d9498>] check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
[<ffffffff804d9498>] watchdog+0xcf2/0x11de kernel/hung_task.c:399
[<ffffffff801d3ae2>] kthread+0x37e/0x7b6 kernel/kthread.c:464
[<ffffffff86261292>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:327
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 4789 Comm: kworker/1:11 Not tainted 6.14.0-rc1-syzkaller-g245aece3750d #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
epc : nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:60 [inline]
epc : nft_synproxy_do_eval+0x8ac/0xa52 net/netfilter/nft_synproxy.c:141
 ra : nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:59 [inline]
 ra : nft_synproxy_do_eval+0x8ac/0xa52 net/netfilter/nft_synproxy.c:141
epc : ffffffff8552bb70 ra : ffffffff8552bb70 sp : ffff8f80000171a0
 gp : ffffffff89c21d80 tp : ffffaf801a86ce00 t0 : f46105a2def658ff
 t1 : fffff5eeffffe624 t2 : 00000000000004d3 s0 : ffff8f8000017310
 s1 : ffff8f8000017450 a0 : 0000000000000000 a1 : ffffffff86842280
 a2 : 0000000000f00000 a3 : ffffffff85455450 a4 : 0000000000000000
 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : 1ffff5f00350db27
 s2 : ffffaf801d224198 s3 : 1ffff1f000002e3c s4 : ffffaf801cc00000
 s5 : ffffaf801b6a1f80 s6 : 0000000000000200 s7 : ffff8f8000017220
 s8 : 0000000000001250 s9 : ffffaf802eab9dc0 s10: ffff8f80000172a0
 s11: ffffaf8038689114 t3 : ffffaf801a86d8f0 t4 : fffff5eeffffe624
 t5 : fffff5eeffffe625 t6 : 0000000000000007
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8552bb70>] nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:59 [inline]
[<ffffffff8552bb70>] nft_synproxy_do_eval+0x8ac/0xa52 net/netfilter/nft_synproxy.c:141
[<ffffffff8552bd74>] nft_synproxy_eval+0x28/0x36 net/netfilter/nft_synproxy.c:247
[<ffffffff85460a3a>] expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
[<ffffffff85460a3a>] nft_do_chain+0x328/0x1598 net/netfilter/nf_tables_core.c:288
[<ffffffff854bb04c>] nft_do_chain_inet+0x180/0x316 net/netfilter/nft_chain_filter.c:161
[<ffffffff85395d24>] nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
[<ffffffff85395d24>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:626
[<ffffffff855b6556>] nf_hook include/linux/netfilter.h:269 [inline]
[<ffffffff855b6556>] NF_HOOK include/linux/netfilter.h:312 [inline]
[<ffffffff855b6556>] ip_local_deliver+0x2ea/0x568 net/ipv4/ip_input.c:254
[<ffffffff855b460a>] dst_input include/net/dst.h:469 [inline]
[<ffffffff855b460a>] ip_rcv_finish+0x1b0/0x2d2 net/ipv4/ip_input.c:447
[<ffffffff855b68aa>] NF_HOOK include/linux/netfilter.h:314 [inline]
[<ffffffff855b68aa>] NF_HOOK include/linux/netfilter.h:308 [inline]
[<ffffffff855b68aa>] ip_rcv+0xd6/0x44e net/ipv4/ip_input.c:567
[<ffffffff84f95f80>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5828
[<ffffffff84f96200>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:5941
[<ffffffff84f97400>] process_backlog+0x4f6/0x1cb0 net/core/dev.c:6289
[<ffffffff84f9bd96>] __napi_poll.constprop.0+0xaa/0x4b8 net/core/dev.c:7106
[<ffffffff84f9cbb6>] napi_poll net/core/dev.c:7175 [inline]
[<ffffffff84f9cbb6>] net_rx_action+0xa12/0xf10 net/core/dev.c:7297
[<ffffffff80156a72>] handle_softirqs+0x4b2/0x132e kernel/softirq.c:561
[<ffffffff8626136c>] __do_softirq+0x12/0x1a kernel/softirq.c:595
[<ffffffff80067060>] ___do_softirq+0x18/0x20 arch/riscv/kernel/irq.c:85
[<ffffffff862612ce>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:356