INFO: task syz-executor:3229 blocked for more than 430 seconds.
      Not tainted 6.16.0-rc7-syzkaller-g7b388bf7a9d9 #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:3229  tgid:3229  ppid:1      task_flags:0x40054c flags:0x0000000c
Call Trace:
[<ffffffff86408686>] context_switch kernel/sched/core.c:5397 [inline]
[<ffffffff86408686>] __schedule+0x105c/0x4088 kernel/sched/core.c:6786
[<ffffffff8640b776>] __schedule_loop kernel/sched/core.c:6864 [inline]
[<ffffffff8640b776>] schedule+0xc4/0x35e kernel/sched/core.c:6879
[<ffffffff8641fdaa>] schedule_timeout+0x1c6/0x2b2 kernel/time/sleep_timeout.c:75
[<ffffffff8640d312>] do_wait_for_common+0x1c2/0x3d0 kernel/sched/completion.c:95
[<ffffffff8640d850>] __wait_for_common kernel/sched/completion.c:116 [inline]
[<ffffffff8640d850>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff8640d850>] wait_for_completion+0x40/0x5c kernel/sched/completion.c:148
[<ffffffff80384ed8>] rcu_barrier+0x2e4/0x66c kernel/rcu/tree.c:3854
[<ffffffff851dd754>] netdev_run_todo+0x2bc/0x10de net/core/dev.c:11376
[<ffffffff8520cf98>] rtnl_unlock+0x14/0x1c net/core/rtnetlink.c:157
[<ffffffff83352120>] tun_detach drivers/net/tun.c:639 [inline]
[<ffffffff83352120>] tun_chr_close+0xde/0x230 drivers/net/tun.c:3396
[<ffffffff80c0b2e0>] __fput+0x382/0xa8c fs/file_table.c:465
[<ffffffff80c0ba98>] ____fput+0x1c/0x26 fs/file_table.c:493
[<ffffffff801e3128>] task_work_run+0x16a/0x25e kernel/task_work.c:227
[<ffffffff8015ebcc>] exit_task_work include/linux/task_work.h:40 [inline]
[<ffffffff8015ebcc>] do_exit+0x866/0x28b6 kernel/exit.c:964
[<ffffffff8016117c>] do_group_exit+0xd4/0x26c kernel/exit.c:1105
[<ffffffff8019a594>] get_signal+0x208c/0x230c kernel/signal.c:3034
[<ffffffff80073a80>] arch_do_signal_or_restart+0x6ba/0x1cd4 arch/riscv/kernel/signal.c:534
[<ffffffff803c1b2e>] exit_to_user_mode_loop+0x90/0x134 kernel/entry/common.c:111
[<ffffffff863fdbc0>] exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
[<ffffffff863fdbc0>] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
[<ffffffff863fdbc0>] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
[<ffffffff863fdbc0>] do_trap_ecall_u+0x3f0/0x530 arch/riscv/kernel/traps.c:357
[<ffffffff864262fe>] handle_exception+0x15e/0x16a arch/riscv/kernel/entry.S:231

Showing all locks held in the system:
1 lock held by kworker/R-mm_pe/14:
1 lock held by khungtaskd/38:
 #0: ffffffff885dbd80 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6766
1 lock held by klogd/3005:
2 locks held by getty/3169:
 #0: ffffaf801d7dc0a0 (&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+0x3e4/0x12ba drivers/tty/n_tty.c:2222
2 locks held by syz-executor/3216:
2 locks held by kworker/u10:0/3225:
 #0: ffffaf8011e89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x72e/0x1f4a kernel/workqueue.c:3213
 #1: ffff8f8007d47b70 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x756/0x1f4a kernel/workqueue.c:3213
1 lock held by syz-executor/3229:
 #0: ffffffff885ebe80 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x66c kernel/rcu/tree.c:3786
1 lock held by kworker/R-wg-cr/3402:
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x738/0xd7c kernel/workqueue.c:3531
1 lock held by kworker/R-wg-cr/3409:
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x738/0xd7c kernel/workqueue.c:3531
5 locks held by kworker/R-wg-cr/3424:
2 locks held by kworker/0:0/3851:
2 locks held by kworker/0:3/3871:
3 locks held by kworker/u10:1/4222:
 #0: ffffaf8011e89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x72e/0x1f4a kernel/workqueue.c:3213
 #1: ffff8f800cdc7b70 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work+0x756/0x1f4a kernel/workqueue.c:3213
 #2: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: idle_cull_fn+0xc0/0x434 kernel/workqueue.c:2960
2 locks held by kworker/0:5/4573:
3 locks held by kworker/u10:4/5056:
2 locks held by kworker/0:1/5238:
3 locks held by kworker/u10:5/5373:
 #0: ffffaf8011e89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x72e/0x1f4a kernel/workqueue.c:3213
 #1: ffff8f8004a07b70 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x756/0x1f4a kernel/workqueue.c:3213
 #2: ffffffff885ebe80 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x66c kernel/rcu/tree.c:3786
1 lock held by kworker/R-wg-cr/5514:
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x36/0x3ca kernel/workqueue.c:2678
1 lock held by kworker/R-wg-cr/5517:
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
 #0: ffffffff88491ca8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x738/0xd7c kernel/workqueue.c:3531
2 locks held by kworker/0:2/5617:
2 locks held by kworker/0:4/5859:
3 locks held by kworker/u10:6/5865:
4 locks held by kworker/0:6/5917:
2 locks held by kworker/0:8/6063:
2 locks held by kworker/0:9/6085:
2 locks held by kworker/0:10/6116:
1 lock held by kworker/0:11/6147:
2 locks held by kworker/0:12/6178:
3 locks held by kworker/u10:8/6238:
1 lock held by syz.2.600/6307:
4 locks held by modprobe/6309:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted 6.16.0-rc7-syzkaller-g7b388bf7a9d9 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007b6f0>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff80003298>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff80062c2c>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80062c2c>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff80062cc0>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff863c038a>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff863c0650>] nmi_trigger_cpumask_backtrace+0x2c4/0x466 lib/nmi_backtrace.c:62
[<ffffffff80089546>] arch_trigger_cpumask_backtrace+0x2c/0x42 arch/riscv/kernel/smp.c:350
[<ffffffff804fa5a8>] trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
[<ffffffff804fa5a8>] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
[<ffffffff804fa5a8>] watchdog+0xd0e/0x11fe kernel/hung_task.c:470
[<ffffffff801e9036>] kthread+0x3a4/0x7e0 kernel/kthread.c:464
[<ffffffff8006b974>] ret_from_fork_kernel+0x2a/0xbec arch/riscv/kernel/process.c:228
[<ffffffff8642642e>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:362
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3424 Comm: kworker/R-wg-cr Not tainted 6.16.0-rc7-syzkaller-g7b388bf7a9d9 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Workqueue: wg-crypt-wg2 wg_packet_tx_worker
epc : __seqprop_spinlock_sequence include/linux/seqlock.h:227 [inline]
epc : nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:344 [inline]
epc : ____nf_conntrack_find net/netfilter/nf_conntrack_core.c:747 [inline]
epc : __nf_conntrack_find_get+0x146/0x916 net/netfilter/nf_conntrack_core.c:783
 ra : arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
 ra : seqcount_lockdep_reader_access include/linux/seqlock.h:74 [inline]
 ra : nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:344 [inline]
 ra : ____nf_conntrack_find net/netfilter/nf_conntrack_core.c:747 [inline]
 ra : __nf_conntrack_find_get+0x142/0x916 net/netfilter/nf_conntrack_core.c:783
epc : ffffffff856205d8 ra : ffffffff856205d4 sp : ffff8f80000074d0
 gp : ffffffff89e816e0 tp : ffffaf8021e14ec0 t0 : ffff8f8000007758
 t1 : 0000000000000001 t2 : fffffffff2f20000 s0 : ffff8f8000007610
 s1 : 0000000000000002 a0 : 0000000000000000 a1 : ffffaf8021e14ec0
 a2 : 00000000000f0000 a3 : 0000000000f00000 a4 : 0000000000000002
 a5 : 0000000000000000 a6 : 00000000000000a0 a7 : ffffffff85621a0e
 s2 : 0000000000000000 s3 : dfffffff00000000 s4 : ffff8f8000007910
 s5 : ffff8f80000075a0 s6 : fffffffef1082838 s7 : 0000000000000000
 s8 : ffffffff884141c0 s9 : ffffaf8019c89e00 s10: ffffffff87848900
 s11: ffff8f8000007730 t3 : 08a69c0e00000000 t4 : 0000000000000000
 t5 : 0000000000000000 t6 : 0000000000000002 ssp : 0000000000000000
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff856205d8>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff856205d8>] seqcount_lockdep_reader_access include/linux/seqlock.h:74 [inline]
[<ffffffff856205d8>] nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:344 [inline]
[<ffffffff856205d8>] ____nf_conntrack_find net/netfilter/nf_conntrack_core.c:747 [inline]
[<ffffffff856205d8>] __nf_conntrack_find_get+0x146/0x916 net/netfilter/nf_conntrack_core.c:783
[<ffffffff85621a0e>] resolve_normal_ct net/netfilter/nf_conntrack_core.c:1887 [inline]
[<ffffffff85621a0e>] nf_conntrack_in+0x4da/0x1c8e net/netfilter/nf_conntrack_core.c:2051
[<ffffffff856320e0>] ipv4_conntrack_in+0x20/0x2e net/netfilter/nf_conntrack_proto.c:207
[<ffffffff855f00a6>] nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
[<ffffffff855f00a6>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:623
[<ffffffff8581e07e>] nf_hook include/linux/netfilter.h:272 [inline]
[<ffffffff8581e07e>] NF_HOOK include/linux/netfilter.h:315 [inline]
[<ffffffff8581e07e>] ip_rcv+0x20e/0x44e net/ipv4/ip_input.c:568
[<ffffffff851cceae>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5977
[<ffffffff851cd130>] __netif_receive_skb+0x2e/0x146 net/core/dev.c:6090
[<ffffffff851ce3c6>] process_backlog+0x4fe/0x1dc8 net/core/dev.c:6442
[<ffffffff851d1924>] __napi_poll.constprop.0+0xaa/0x4c2 net/core/dev.c:7414
[<ffffffff851d287e>] napi_poll net/core/dev.c:7478 [inline]
[<ffffffff851d287e>] net_rx_action+0xb42/0xffa net/core/dev.c:7605
[<ffffffff80167428>] handle_softirqs+0x500/0x1436 kernel/softirq.c:579
[<ffffffff86426528>] __do_softirq+0x12/0x1a kernel/softirq.c:613
[<ffffffff8006a522>] ___do_softirq+0x18/0x20 arch/riscv/kernel/irq.c:85
[<ffffffff86426476>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:395