INFO: task kworker/u9:3:3279 blocked for more than 430 seconds.
      Not tainted 6.16.0-rc1-syzkaller-g306e57988197 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:3    state:D stack:0     pid:3279  tgid:3279  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events_unbound bpf_map_free_deferred
Call Trace:
[<ffffffff86307720>] context_switch kernel/sched/core.c:5396 [inline]
[<ffffffff86307720>] __schedule+0x1022/0x4094 kernel/sched/core.c:6785
[<ffffffff8630a856>] __schedule_loop kernel/sched/core.c:6863 [inline]
[<ffffffff8630a856>] schedule+0xc4/0x35e kernel/sched/core.c:6878
[<ffffffff8631edea>] schedule_timeout+0x1c6/0x2ae kernel/time/sleep_timeout.c:75
[<ffffffff8630c3de>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff8630c3de>] __wait_for_common+0x1d2/0x3e8 kernel/sched/completion.c:116
[<ffffffff8630c60e>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff8630c60e>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff80375b84>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:3850
[<ffffffff8074bd1e>] dev_map_free+0x11c/0x6bc kernel/bpf/devmap.c:214
[<ffffffff805d641a>] bpf_map_free kernel/bpf/syscall.c:862 [inline]
[<ffffffff805d641a>] bpf_map_free_deferred+0x226/0x47a kernel/bpf/syscall.c:888
[<ffffffff801bd390>] process_one_work+0x96a/0x1f32 kernel/workqueue.c:3238
[<ffffffff801c04a0>] process_scheduled_works kernel/workqueue.c:3321 [inline]
[<ffffffff801c04a0>] worker_thread+0x5ce/0xde8 kernel/workqueue.c:3402
[<ffffffff801ddcbc>] kthread+0x39c/0x7d4 kernel/kthread.c:464
[<ffffffff8006977a>] ret_from_fork_kernel+0x2a/0xbb2 arch/riscv/kernel/process.c:214
[<ffffffff863251ea>] 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:
2 locks held by kworker/u9:2/30:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3213
 #1: ffff8f8000207b70 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3213
1 lock held by khungtaskd/37:
 #0: ffffffff883dc420 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6766
2 locks held by kworker/1:2/60:
1 lock held by syslogd/2985:
1 lock held by dhcpcd/3034:
 #0: ffffaf806ed3b0d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline]
 #0: ffffaf806ed3b0d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1532 [inline]
 #0: ffffaf806ed3b0d8 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1856 [inline]
 #0: ffffaf806ed3b0d8 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x304/0x4094 kernel/sched/core.c:6709
2 locks held by getty/3156:
 #0: ffffaf801d0ad0a0 (&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+0x3e4/0x12b6 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/3189:
1 lock held by syz-executor/3199:
 #0: ffffffff883ec640 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3782
3 locks held by kworker/u9:3/3279:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3213
 #1: ffff8f800d427b70 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3213
 #2: ffffffff883ec640 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3782
2 locks held by kworker/1:0/3780:
2 locks held by kworker/1:4/3906:
2 locks held by kworker/1:5/3921:
2 locks held by kworker/1:6/3935:
2 locks held by kworker/1:8/3957:
4 locks held by kworker/1:9/3964:
2 locks held by kworker/1:10/3971:
2 locks held by kworker/1:12/4012:
3 locks held by kworker/u9:6/4035:
2 locks held by modprobe/4438:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.16.0-rc1-syzkaller-g306e57988197 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80078bbe>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff8000327a>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff8006103e>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff8006103e>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff800610d2>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff862bf364>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff862bf61c>] nmi_trigger_cpumask_backtrace+0x2b6/0x458 lib/nmi_backtrace.c:62
[<ffffffff800863dc>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:350
[<ffffffff804edb80>] trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
[<ffffffff804edb80>] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
[<ffffffff804edb80>] watchdog+0xcf2/0x11de kernel/hung_task.c:470
[<ffffffff801ddcbc>] kthread+0x39c/0x7d4 kernel/kthread.c:464
[<ffffffff8006977a>] ret_from_fork_kernel+0x2a/0xbb2 arch/riscv/kernel/process.c:214
[<ffffffff863251ea>] 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: 23 Comm: ksoftirqd/1 Not tainted 6.16.0-rc1-syzkaller-g306e57988197 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
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+0x38e/0x5e8 kernel/softirq.c:414
 ra : __local_bh_enable_ip+0x38a/0x5e8 kernel/softirq.c:412
epc : ffffffff80160e9a ra : ffffffff80160e96 sp : ffff8f80001965f0
 gp : ffffffff89c7e9c0 tp : ffffaf80132c4ec0 t0 : ffff8f80001966b0
 t1 : fffff5eeffffe496 t2 : fffffffff2f20000 s0 : ffff8f8000196640
 s1 : 0000000000000101 a0 : 0000000000000001 a1 : ffffffff87d6da40
 a2 : 0000000000000003 a3 : 0000000000000100 a4 : 0000000000000001
 a5 : 00000000000bfb7c a6 : 0000000000f00000 a7 : ffffaf7fffff24b7
 s2 : ffffaf80132c4ec0 s3 : ffffffff850e9346 s4 : 0000000000000001
 s5 : ffffffff910373c0 s6 : 1ffff5f0026589d9 s7 : ffffffff89cbf9c0
 s8 : ffffffff910373c8 s9 : ffffffff910373c0 s10: ffff8f8000196900
 s11: ffffaf801b7c0000 t3 : 00582f5200000000 t4 : fffff5eeffffe496
 t5 : fffff5eeffffe497 t6 : 0000000000000002
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff80160e9a>] arch_local_irq_enable arch/riscv/include/asm/irqflags.h:21 [inline]
[<ffffffff80160e9a>] __local_bh_enable_ip+0x38e/0x5e8 kernel/softirq.c:412
[<ffffffff850e9382>] local_bh_enable include/linux/bottom_half.h:33 [inline]
[<ffffffff850e9382>] rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
[<ffffffff850e9382>] __dev_queue_xmit+0xa80/0x4a02 net/core/dev.c:4740
[<ffffffff8574ffde>] dev_queue_xmit include/linux/netdevice.h:3355 [inline]
[<ffffffff8574ffde>] neigh_hh_output include/net/neighbour.h:523 [inline]
[<ffffffff8574ffde>] neigh_output include/net/neighbour.h:537 [inline]
[<ffffffff8574ffde>] ip_finish_output2+0xcfa/0x2772 net/ipv4/ip_output.c:235
[<ffffffff85751dce>] __ip_finish_output net/ipv4/ip_output.c:313 [inline]
[<ffffffff85751dce>] __ip_finish_output+0x378/0x60c net/ipv4/ip_output.c:295
[<ffffffff8575209e>] ip_finish_output+0x3c/0x350 net/ipv4/ip_output.c:323
[<ffffffff85752540>] NF_HOOK_COND include/linux/netfilter.h:306 [inline]
[<ffffffff85752540>] ip_output+0x18e/0x61c net/ipv4/ip_output.c:433
[<ffffffff8575362c>] dst_output include/net/dst.h:459 [inline]
[<ffffffff8575362c>] ip_local_out+0xac/0x1a8 net/ipv4/ip_output.c:129
[<ffffffff855d0138>] synproxy_send_tcp.isra.0+0x3de/0x5d2 net/netfilter/nf_synproxy_core.c:439
[<ffffffff855d1f64>] synproxy_send_client_synack+0x6dc/0x8be net/netfilter/nf_synproxy_core.c:484
[<ffffffff856ab89c>] nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:59 [inline]
[<ffffffff856ab89c>] nft_synproxy_do_eval+0x8ac/0xa52 net/netfilter/nft_synproxy.c:141
[<ffffffff856abaa0>] nft_synproxy_eval+0x28/0x36 net/netfilter/nft_synproxy.c:247
[<ffffffff855dd3ca>] expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
[<ffffffff855dd3ca>] nft_do_chain+0x328/0x1598 net/netfilter/nf_tables_core.c:285
[<ffffffff85639588>] nft_do_chain_inet+0x180/0x316 net/netfilter/nft_chain_filter.c:161
[<ffffffff855127e8>] nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
[<ffffffff855127e8>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:623
[<ffffffff8573764a>] nf_hook include/linux/netfilter.h:272 [inline]
[<ffffffff8573764a>] NF_HOOK include/linux/netfilter.h:315 [inline]
[<ffffffff8573764a>] ip_local_deliver+0x2ea/0x568 net/ipv4/ip_input.c:254
[<ffffffff85735700>] dst_input include/net/dst.h:469 [inline]
[<ffffffff85735700>] ip_rcv_finish+0x1b0/0x2d2 net/ipv4/ip_input.c:447
[<ffffffff8573799e>] NF_HOOK include/linux/netfilter.h:317 [inline]
[<ffffffff8573799e>] NF_HOOK include/linux/netfilter.h:311 [inline]
[<ffffffff8573799e>] ip_rcv+0xd6/0x44e net/ipv4/ip_input.c:567
[<ffffffff850f58a8>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5977
[<ffffffff850f5b28>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:6090
[<ffffffff850f6d28>] process_backlog+0x4f6/0x1cb0 net/core/dev.c:6442
[<ffffffff850fb6c2>] __napi_poll.constprop.0+0xaa/0x4ba net/core/dev.c:7414
[<ffffffff850fc5a6>] napi_poll net/core/dev.c:7478 [inline]
[<ffffffff850fc5a6>] net_rx_action+0xad4/0xefc net/core/dev.c:7605
[<ffffffff8015e7ae>] handle_softirqs+0x4b2/0x132e kernel/softirq.c:579
[<ffffffff8015f6f8>] run_ksoftirqd kernel/softirq.c:968 [inline]
[<ffffffff8015f6f8>] run_ksoftirqd+0xce/0x144 kernel/softirq.c:960
[<ffffffff801f41fc>] smpboot_thread_fn+0x420/0xc80 kernel/smpboot.c:164
[<ffffffff801ddcbc>] kthread+0x39c/0x7d4 kernel/kthread.c:464
[<ffffffff8006977a>] ret_from_fork_kernel+0x2a/0xbb2 arch/riscv/kernel/process.c:214
[<ffffffff863251ea>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:327