INFO: task kworker/u9:0:5623 blocked for more than 430 seconds.
      Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:0    state:D stack:0     pid:5623  tgid:5623  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events_unbound bpf_map_free_deferred
Call Trace:
[<ffffffff863ce5c0>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff863ce5c0>] __schedule+0x1042/0x4106 kernel/sched/core.c:6961
[<ffffffff863d1748>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff863d1748>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff863e72b2>] schedule_timeout+0x1c6/0x2ae kernel/time/sleep_timeout.c:75
[<ffffffff863d32fe>] do_wait_for_common kernel/sched/completion.c:100 [inline]
[<ffffffff863d32fe>] __wait_for_common+0x1d2/0x3e8 kernel/sched/completion.c:121
[<ffffffff863d352e>] wait_for_common kernel/sched/completion.c:132 [inline]
[<ffffffff863d352e>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:153
[<ffffffff8038232e>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:3883
[<ffffffff8076c816>] dev_map_free+0x11c/0x6bc kernel/bpf/devmap.c:214
[<ffffffff805eb838>] bpf_map_free kernel/bpf/syscall.c:864 [inline]
[<ffffffff805eb838>] bpf_map_free_deferred+0x24a/0x4a8 kernel/bpf/syscall.c:891
[<ffffffff801c7a44>] process_one_work+0x96a/0x1f32 kernel/workqueue.c:3236
[<ffffffff801cab54>] process_scheduled_works kernel/workqueue.c:3319 [inline]
[<ffffffff801cab54>] worker_thread+0x5ce/0xde8 kernel/workqueue.c:3400
[<ffffffff801e843c>] kthread+0x39c/0x7d4 kernel/kthread.c:463
[<ffffffff800699c4>] ret_from_fork_kernel+0x2a/0xbb4 arch/riscv/kernel/process.c:214
[<ffffffff863ed6b6>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:327

Showing all locks held in the system:
3 locks held by kworker/u9:1/28:
1 lock held by khungtaskd/37:
 #0: ffffffff883dd9a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6771
1 lock held by klogd/3017:
2 locks held by getty/3165:
 #0: ffffaf801c1280a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e4/0x12b6 drivers/tty/n_tty.c:2222
2 locks held by syz-executor/3193:
3 locks held by kworker/1:3/3845:
2 locks held by kworker/1:4/3906:
2 locks held by kworker/1:0/4698:
2 locks held by kworker/1:2/5527:
3 locks held by kworker/u9:0/5623:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3211
 #1: ffff8f8004e27b70 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3211
 #2: ffffffff883eda40 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3815
3 locks held by kworker/u9:5/5649:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3211
 #1: ffff8f8003fa7b70 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3211
 #2: ffffffff883eda40 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3815
5 locks held by kworker/1:7/5697:
2 locks held by kworker/0:4/5823:
2 locks held by syz.1.770/5827:
2 locks held by syz.0.771/5826:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007949a>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff8000329a>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff80060b76>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80060b76>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff80060c0a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff8638596a>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff86385c22>] nmi_trigger_cpumask_backtrace+0x2b6/0x458 lib/nmi_backtrace.c:62
[<ffffffff8008705c>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:350
[<ffffffff805000a4>] trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
[<ffffffff805000a4>] check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
[<ffffffff805000a4>] watchdog+0xc56/0x1134 kernel/hung_task.c:491
[<ffffffff801e843c>] kthread+0x39c/0x7d4 kernel/kthread.c:463
[<ffffffff800699c4>] ret_from_fork_kernel+0x2a/0xbb4 arch/riscv/kernel/process.c:214
[<ffffffff863ed6b6>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:327
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5697 Comm: kworker/1:7 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Workqueue: mm_percpu_wq vmstat_update
epc : lockdep_enabled kernel/locking/lockdep.c:118 [inline]
epc : lock_acquire kernel/locking/lockdep.c:5844 [inline]
epc : lock_acquire+0xe4/0x448 kernel/locking/lockdep.c:5825
 ra : kasan_check_byte include/linux/kasan.h:399 [inline]
 ra : lock_acquire kernel/locking/lockdep.c:5842 [inline]
 ra : lock_acquire+0xe4/0x448 kernel/locking/lockdep.c:5825
epc : ffffffff802df0fe ra : ffffffff802df0fe sp : ffff8f8000016b40
 gp : ffffffff89c9e5c0 tp : ffffaf801a32b480 t0 : ffff8f8000016960
 t1 : 0000000000000001 t2 : fffffffff2f20000 s0 : ffff8f8000016c10
 s1 : ffffffff883dd9a0 a0 : 0000000000000001 a1 : ffffffff858298ee
 a2 : 0000000000000001 a3 : 0000000000000007 a4 : 0000000000000100
 a5 : dfffffff00000000 a6 : ffffffff858298b4 a7 : ffffffff85826db0
 s2 : 0000000000000002 s3 : 0000000000000000 s4 : 0000000000000000
 s5 : 0000000000000000 s6 : 0000000000000000 s7 : ffffffff858298b4
 s8 : ffffffff858298ee s9 : ffffffff89cdf9a0 s10: 1ffff5f0074212e0
 s11: ffffaf8017e4b358 t3 : d3777d9300000000 t4 : 0000000000001fff
 t5 : 00000000000000c8 t6 : 0000000000000002
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff802df0fe>] kasan_check_byte include/linux/kasan.h:399 [inline]
[<ffffffff802df0fe>] lock_acquire kernel/locking/lockdep.c:5842 [inline]
[<ffffffff802df0fe>] lock_acquire+0xe4/0x448 kernel/locking/lockdep.c:5825
[<ffffffff858298ee>] rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
[<ffffffff858298ee>] rcu_read_lock include/linux/rcupdate.h:841 [inline]
[<ffffffff858298ee>] ip_finish_output2+0x484/0x2770 net/ipv4/ip_output.c:228
[<ffffffff8582bf52>] __ip_finish_output net/ipv4/ip_output.c:313 [inline]
[<ffffffff8582bf52>] __ip_finish_output+0x378/0x60c net/ipv4/ip_output.c:295
[<ffffffff8582c222>] ip_finish_output+0x3c/0x350 net/ipv4/ip_output.c:323
[<ffffffff8582c754>] NF_HOOK_COND include/linux/netfilter.h:307 [inline]
[<ffffffff8582c754>] ip_output+0x21e/0x83a net/ipv4/ip_output.c:436
[<ffffffff8582d9d0>] dst_output include/net/dst.h:461 [inline]
[<ffffffff8582d9d0>] ip_local_out+0xac/0x1a8 net/ipv4/ip_output.c:129
[<ffffffff856ad2b8>] synproxy_send_tcp.isra.0+0x3de/0x5d2 net/netfilter/nf_synproxy_core.c:439
[<ffffffff856af0e4>] synproxy_send_client_synack+0x6dc/0x8be net/netfilter/nf_synproxy_core.c:484
[<ffffffff85786f80>] nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:59 [inline]
[<ffffffff85786f80>] nft_synproxy_do_eval+0x8ac/0xa52 net/netfilter/nft_synproxy.c:141
[<ffffffff85787184>] nft_synproxy_eval+0x28/0x36 net/netfilter/nft_synproxy.c:247
[<ffffffff856ba546>] expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
[<ffffffff856ba546>] nft_do_chain+0x328/0x1598 net/netfilter/nf_tables_core.c:285
[<ffffffff8571656c>] nft_do_chain_inet+0x180/0x316 net/netfilter/nft_chain_filter.c:161
[<ffffffff855ef63a>] nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
[<ffffffff855ef63a>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:623
[<ffffffff85811b2e>] nf_hook include/linux/netfilter.h:273 [inline]
[<ffffffff85811b2e>] NF_HOOK include/linux/netfilter.h:316 [inline]
[<ffffffff85811b2e>] ip_local_deliver+0x2ea/0x568 net/ipv4/ip_input.c:260
[<ffffffff8580f9c6>] dst_input include/net/dst.h:471 [inline]
[<ffffffff8580f9c6>] ip_rcv_finish+0x1b0/0x2d2 net/ipv4/ip_input.c:454
[<ffffffff85811e82>] NF_HOOK include/linux/netfilter.h:318 [inline]
[<ffffffff85811e82>] NF_HOOK include/linux/netfilter.h:312 [inline]
[<ffffffff85811e82>] ip_rcv+0xd6/0x44e net/ipv4/ip_input.c:574
[<ffffffff851c8bc4>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5979
[<ffffffff851c8e44>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:6092
[<ffffffff851ca044>] process_backlog+0x4f6/0x1cb0 net/core/dev.c:6444
[<ffffffff851cd4ac>] __napi_poll.constprop.0+0xaa/0x4ba net/core/dev.c:7489
[<ffffffff851ce392>] napi_poll net/core/dev.c:7552 [inline]
[<ffffffff851ce392>] net_rx_action+0xad6/0xefe net/core/dev.c:7679
[<ffffffff8016778e>] handle_softirqs+0x4b2/0x132e kernel/softirq.c:579
[<ffffffff801688da>] __do_softirq kernel/softirq.c:613 [inline]
[<ffffffff801688da>] invoke_softirq kernel/softirq.c:453 [inline]
[<ffffffff801688da>] __irq_exit_rcu+0x18c/0x550 kernel/softirq.c:680
[<ffffffff8016a2e8>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:696
[<ffffffff863c32b0>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:390
[<ffffffff863ed6fe>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:360