INFO: task kworker/u10:1:3366 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/u10:1   state:D stack:0     pid:3366  tgid:3366  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events_unbound bpf_map_free_deferred
Call Trace:
[<ffffffff86388df4>] context_switch kernel/sched/core.c:5396 [inline]
[<ffffffff86388df4>] __schedule+0x1022/0x4094 kernel/sched/core.c:6785
[<ffffffff8638bf2a>] __schedule_loop kernel/sched/core.c:6863 [inline]
[<ffffffff8638bf2a>] schedule+0xc4/0x35e kernel/sched/core.c:6878
[<ffffffff863a0702>] schedule_timeout+0x1c6/0x2ae kernel/time/sleep_timeout.c:75
[<ffffffff8638dab2>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff8638dab2>] __wait_for_common+0x1d2/0x3e8 kernel/sched/completion.c:116
[<ffffffff8638dce2>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff8638dce2>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff80373490>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:3850
[<ffffffff80713e5e>] dev_map_free+0x11c/0x6bc kernel/bpf/devmap.c:214
[<ffffffff805a4576>] bpf_map_free kernel/bpf/syscall.c:862 [inline]
[<ffffffff805a4576>] bpf_map_free_deferred+0x226/0x47a kernel/bpf/syscall.c:888
[<ffffffff801bb13c>] process_one_work+0x96a/0x1f32 kernel/workqueue.c:3238
[<ffffffff801be24c>] process_scheduled_works kernel/workqueue.c:3321 [inline]
[<ffffffff801be24c>] worker_thread+0x5ce/0xde8 kernel/workqueue.c:3402
[<ffffffff801dba5c>] kthread+0x39c/0x7d4 kernel/kthread.c:464
[<ffffffff800696de>] ret_from_fork_kernel+0x2a/0xbb2 arch/riscv/kernel/process.c:214
[<ffffffff863a6b02>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:327

Showing all locks held in the system:
1 lock held by khungtaskd/39:
 #0: ffffffff883dc3a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6766
1 lock held by klogd/2990:
2 locks held by getty/3142:
 #0: ffffaf801cf220a0 (&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
2 locks held by syz-executor/3166:
3 locks held by kworker/u10:1/3366:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3213
 #1: ffff8f800cf47b70 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3213
 #2: ffffffff883ec5c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3782
2 locks held by kworker/0:3/3806:
2 locks held by kworker/0:4/3876:
2 locks held by kworker/0:1/4500:
3 locks held by kworker/u10:3/5372:
2 locks held by kworker/0:0/5800:
2 locks held by kworker/0:2/5970:
2 locks held by kworker/0:9/6003:
2 locks held by kworker/0:11/6020:
4 locks held by kworker/0:12/6021:
2 locks held by kworker/0:13/6056:
3 locks held by kworker/u10:0/6110:
1 lock held by syz.1.810/6124:
 #0: ffffffff8850a6c8 (lock#2){+.+.}-{4:4}, at: __lru_add_drain_all+0x80/0x7e4 mm/swap.c:830
1 lock held by syz.0.811/6126:
 #0: ffffffff8850a6c8 (lock#2){+.+.}-{4:4}, at: __lru_add_drain_all+0x80/0x7e4 mm/swap.c:830

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 39 Comm: khungtaskd Not tainted 6.16.0-rc1-syzkaller-g306e57988197 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80078a80>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff8000327a>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff80061012>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80061012>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff800610a6>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff86340a50>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff86340d08>] nmi_trigger_cpumask_backtrace+0x2b6/0x458 lib/nmi_backtrace.c:62
[<ffffffff800847ac>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:350
[<ffffffff804ea4a8>] trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
[<ffffffff804ea4a8>] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
[<ffffffff804ea4a8>] watchdog+0xcea/0x1618 kernel/hung_task.c:470
[<ffffffff801dba5c>] kthread+0x39c/0x7d4 kernel/kthread.c:464
[<ffffffff800696de>] ret_from_fork_kernel+0x2a/0xbb2 arch/riscv/kernel/process.c:214
[<ffffffff863a6b02>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:327
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3806 Comm: kworker/0:3 Not tainted 6.16.0-rc1-syzkaller-g306e57988197 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
epc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
epc : _raw_spin_unlock_irqrestore+0x36/0xd4 kernel/locking/spinlock.c:194
 ra : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 ra : _raw_spin_unlock_irqrestore+0x86/0xd4 kernel/locking/spinlock.c:194
epc : ffffffff863a221a ra : ffffffff863a226a sp : ffff8f8000007380
 gp : ffffffff89c4eee0 tp : ffffaf8014fb9a40 t0 : ffffaf80406e45b8
 t1 : fffffffef21e54fa t2 : fffffffff2f20000 s0 : ffff8f80000073a0
 s1 : 0000000000000002 a0 : 0000000000000000 a1 : ffffffff87d48a70
 a2 : 0000000000000003 a3 : 0000000000000102 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffffff90f2a7d3
 s2 : ffffffff90f2a7d0 s3 : dead000000000100 s4 : dead000000000122
 s5 : dfffffff00000000 s6 : ffffaf80406e45b8 s7 : ffffaf80406e4480
 s8 : 000000000000002c s9 : 000000000000002c s10: ffffaf80406e45b8
 s11: ffffaf80406e4000 t3 : 627a5db700000000 t4 : fffffffef21e54fa
 t5 : fffffffef21e54fb t6 : 0000000000000002
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff863a221a>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff863a221a>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
[<ffffffff863a221a>] _raw_spin_unlock_irqrestore+0x36/0xd4 kernel/locking/spinlock.c:194
[<ffffffff81726022>] __debug_check_no_obj_freed lib/debugobjects.c:1108 [inline]
[<ffffffff81726022>] debug_check_no_obj_freed+0x26a/0x4fc lib/debugobjects.c:1129
[<ffffffff80a05550>] slab_free_hook mm/slub.c:2312 [inline]
[<ffffffff80a05550>] slab_free mm/slub.c:4643 [inline]
[<ffffffff80a05550>] kmem_cache_free+0x352/0x604 mm/slub.c:4745
[<ffffffff854cf0f4>] nf_conntrack_free+0x10c/0x4a4 net/netfilter/nf_conntrack_core.c:1732
[<ffffffff854cf602>] nf_ct_destroy+0x176/0x272 net/netfilter/nf_conntrack_core.c:601
[<ffffffff854d57f0>] nf_ct_put include/net/netfilter/nf_conntrack.h:186 [inline]
[<ffffffff854d57f0>] nf_ct_put include/net/netfilter/nf_conntrack.h:183 [inline]
[<ffffffff854d57f0>] nf_conntrack_in+0x710/0x1c3c net/netfilter/nf_conntrack_core.c:2058
[<ffffffff854e5d68>] ipv4_conntrack_in+0x20/0x2e net/netfilter/nf_conntrack_proto.c:207
[<ffffffff854a4250>] nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
[<ffffffff854a4250>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:623
[<ffffffff856c95fa>] nf_hook include/linux/netfilter.h:272 [inline]
[<ffffffff856c95fa>] NF_HOOK include/linux/netfilter.h:315 [inline]
[<ffffffff856c95fa>] ip_rcv+0x20e/0x44e net/ipv4/ip_input.c:567
[<ffffffff85087e84>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5977
[<ffffffff85088104>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:6090
[<ffffffff85089304>] process_backlog+0x4f6/0x1cb0 net/core/dev.c:6442
[<ffffffff8508dc9e>] __napi_poll.constprop.0+0xaa/0x4ba net/core/dev.c:7414
[<ffffffff8508eb82>] napi_poll net/core/dev.c:7478 [inline]
[<ffffffff8508eb82>] net_rx_action+0xad4/0xefc net/core/dev.c:7605
[<ffffffff8015c6d2>] handle_softirqs+0x4b2/0x132e kernel/softirq.c:579
[<ffffffff863a6bfc>] __do_softirq+0x12/0x1a kernel/softirq.c:613
[<ffffffff800683c0>] ___do_softirq+0x18/0x20 arch/riscv/kernel/irq.c:85
[<ffffffff863a6b4a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:360
vkms_vblank_simulate: vblank timer overrun