INFO: task syz.3.472:7538 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.472       state:D stack:0     pid:7538  tgid:7536  ppid:4480   flags:0x00000006
Call Trace:
[<ffffffff85fe3a74>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a74>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6664>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6664>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85ff9412>] schedule_timeout+0x1e2/0x296 kernel/time/timer.c:2591
[<ffffffff85fe8042>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff85fe8042>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff85fe8348>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff85fe8348>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff802d83b6>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:4629
[<ffffffff84d323f6>] netdev_run_todo+0x294/0x105e net/core/dev.c:10778
[<ffffffff84d5e85e>] rtnl_unlock+0x14/0x1c net/core/rtnetlink.c:152
[<ffffffff85ac7e2a>] vlan_ioctl_handler+0x22c/0x956 net/8021q/vlan.c:654
[<ffffffff84c6231c>] sock_ioctl+0x1f6/0x61a net/socket.c:1310
[<ffffffff80a76790>] vfs_ioctl fs/ioctl.c:51 [inline]
[<ffffffff80a76790>] __do_sys_ioctl fs/ioctl.c:907 [inline]
[<ffffffff80a76790>] __se_sys_ioctl fs/ioctl.c:893 [inline]
[<ffffffff80a76790>] __riscv_sys_ioctl+0x182/0x1e6 fs/ioctl.c:893
[<ffffffff8000f2d4>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fd9c4a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/37:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
2 locks held by kworker/1:2/902:
1 lock held by klogd/2971:
2 locks held by getty/3138:
 #0: ff60000017f2b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff2000000008b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
1 lock held by syz-executor/3168:
2 locks held by kworker/1:3/3821:
2 locks held by kworker/1:0/4958:
2 locks held by kworker/1:4/7069:
3 locks held by kworker/0:6/7110:
2 locks held by kworker/1:5/7486:
3 locks held by syz.6.469/7529:
2 locks held by syz.3.472/7538:
 #0: ffffffff89381ea8 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x1dc/0x61a net/socket.c:1308
 #1: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
4 locks held by kworker/1:6/7543:
2 locks held by kworker/1:7/7918:
3 locks held by kworker/1:8/7970:
4 locks held by kworker/u8:1/8122:
 #0: ff60000011e81948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000000de7c90 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ffffffff89397670 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xda/0x984 net/core/net_namespace.c:580
 #3: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
1 lock held by syz.7.482/8314:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a14>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f7c3cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fd797a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fd797a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fd7a0a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f3faae>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f3fd66>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff80019974>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432c3c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432c3c>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432c3c>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7543 Comm: kworker/1:6 Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
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+0x36/0xd6 kernel/locking/spinlock.c:194
 ra : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 ra : _raw_spin_unlock_irqrestore+0x86/0xd6 kernel/locking/spinlock.c:194
epc : ffffffff85ffb7aa ra : ffffffff85ffb7fa sp : ff200000000168d0
 gp : ffffffff897bea80 tp : ff60000019fe3480 t0 : ff60000019fe3fa0
 t1 : fffffffef214fc63 t2 : 0000000000000001 s0 : ff200000000168f0
 s1 : 0000000000000002 a0 : 0000000000000001 a1 : ffffffff8643e620
 a2 : 0000000000000003 a3 : 0000000000000102 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : ff60000019fe3fe8 a7 : 1fec0000033fc7fd
 s2 : ffffffff90a7e318 s3 : ff200000000169a0 s4 : 0000000000000027
 s5 : ffffffff90a7e318 s6 : ff60000031339440 s7 : 1fe4000000002d20
 s8 : ffffffff86451260 s9 : ffffffff90a7e310 s10: 0000000200000022
 s11: 1fec00000646a485 t3 : 1fec00000527a934 t4 : fffffffef214fc63
 t5 : fffffffef214fc64 t6 : 1fec0000033fc811
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff85ffb7aa>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff85ffb7aa>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
[<ffffffff85ffb7aa>] _raw_spin_unlock_irqrestore+0x36/0xd6 kernel/locking/spinlock.c:194
[<ffffffff814ac93e>] debug_object_activate+0x298/0x378 lib/debugobjects.c:726
[<ffffffff802e1f14>] debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline]
[<ffffffff802e1f14>] __call_rcu_common.constprop.0+0x3c/0x934 kernel/rcu/tree.c:3071
[<ffffffff802e282c>] call_rcu+0xc/0x14 kernel/rcu/tree.c:3190
[<ffffffff808da400>] slab_free_hook mm/slub.c:2307 [inline]
[<ffffffff808da400>] slab_free mm/slub.c:4580 [inline]
[<ffffffff808da400>] kmem_cache_free+0x43e/0x5f4 mm/slub.c:4682
[<ffffffff8513d62e>] nf_conntrack_free+0x10c/0x4a4 net/netfilter/nf_conntrack_core.c:1735
[<ffffffff8513db3c>] nf_ct_destroy+0x176/0x272 net/netfilter/nf_conntrack_core.c:598
[<ffffffff85143d72>] nf_ct_put include/net/netfilter/nf_conntrack.h:186 [inline]
[<ffffffff85143d72>] nf_ct_put include/net/netfilter/nf_conntrack.h:183 [inline]
[<ffffffff85143d72>] nf_conntrack_in+0x728/0x1b28 net/netfilter/nf_conntrack_core.c:2061
[<ffffffff851542ec>] ipv4_conntrack_local+0xf6/0x200 net/netfilter/nf_conntrack_proto.c:229
[<ffffffff85112730>] nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
[<ffffffff85112730>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:626
[<ffffffff8534af1a>] nf_hook include/linux/netfilter.h:269 [inline]
[<ffffffff8534af1a>] __ip_local_out+0x498/0x9ce net/ipv4/ip_output.c:119
[<ffffffff8534b47e>] ip_local_out+0x2e/0x1a8 net/ipv4/ip_output.c:128
[<ffffffff851cf130>] synproxy_send_tcp.isra.0+0x3de/0x5d2 net/netfilter/nf_synproxy_core.c:439
[<ffffffff851d10b0>] synproxy_send_client_synack+0x940/0xc9a net/netfilter/nf_synproxy_core.c:484
[<ffffffff852a716c>] nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:59 [inline]
[<ffffffff852a716c>] nft_synproxy_do_eval+0x8ac/0xa52 net/netfilter/nft_synproxy.c:141
[<ffffffff852a7370>] nft_synproxy_eval+0x28/0x36 net/netfilter/nft_synproxy.c:247
[<ffffffff851dd7c2>] expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
[<ffffffff851dd7c2>] nft_do_chain+0x328/0x1598 net/netfilter/nf_tables_core.c:288
[<ffffffff8523729c>] nft_do_chain_inet+0x180/0x316 net/netfilter/nft_chain_filter.c:161
[<ffffffff85112730>] nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
[<ffffffff85112730>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:626
[<ffffffff8533038a>] nf_hook include/linux/netfilter.h:269 [inline]
[<ffffffff8533038a>] NF_HOOK include/linux/netfilter.h:312 [inline]
[<ffffffff8533038a>] ip_local_deliver+0x2ea/0x568 net/ipv4/ip_input.c:254
[<ffffffff8532ee32>] dst_input include/net/dst.h:460 [inline]
[<ffffffff8532ee32>] ip_rcv_finish+0x1b0/0x2d2 net/ipv4/ip_input.c:449
[<ffffffff853306de>] NF_HOOK include/linux/netfilter.h:314 [inline]
[<ffffffff853306de>] NF_HOOK include/linux/netfilter.h:308 [inline]
[<ffffffff853306de>] ip_rcv+0xd6/0x44e net/ipv4/ip_input.c:569
[<ffffffff84d21a54>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5662
[<ffffffff84d21cd4>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:5775
[<ffffffff84d22d58>] process_backlog+0x4fc/0x1cbc net/core/dev.c:6107
[<ffffffff84d2760a>] __napi_poll.constprop.0+0xaa/0x4b8 net/core/dev.c:6771
[<ffffffff84d2842a>] napi_poll net/core/dev.c:6840 [inline]
[<ffffffff84d2842a>] net_rx_action+0xa12/0xf10 net/core/dev.c:6962
[<ffffffff800e0fba>] handle_softirqs+0x4a6/0x10de kernel/softirq.c:554
[<ffffffff85ffccb8>] __do_softirq+0x12/0x1a kernel/softirq.c:588
[<ffffffff80006f74>] ___do_softirq+0x18/0x20 arch/riscv/kernel/irq.c:85
[<ffffffff85ffcc1a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:355