INFO: task syz.0.323:4700 blocked for more than 430 seconds.
      Not tainted 6.14.0-rc1-syzkaller-g245aece3750d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.323       state:D stack:0     pid:4700  tgid:4699  ppid:3175   task_flags:0x400140 flags:0x0000000c
Call Trace:
[<ffffffff86245be6>] context_switch kernel/sched/core.c:5377 [inline]
[<ffffffff86245be6>] __schedule+0xe4c/0x3d70 kernel/sched/core.c:6764
[<ffffffff86248bce>] __schedule_loop kernel/sched/core.c:6841 [inline]
[<ffffffff86248bce>] schedule+0xc4/0x324 kernel/sched/core.c:6856
[<ffffffff8625ce86>] schedule_timeout+0x1c6/0x28a kernel/time/sleep_timeout.c:75
[<ffffffff8624a70a>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff8624a70a>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff8624aa10>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff8624aa10>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff803682e2>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:3809
[<ffffffff84fa782a>] netdev_run_todo+0x294/0x10b4 net/core/dev.c:11130
[<ffffffff84fe6082>] rtnl_unlock net/core/rtnetlink.c:151 [inline]
[<ffffffff84fe6082>] rtnl_nets_unlock net/core/rtnetlink.c:348 [inline]
[<ffffffff84fe6082>] rtnl_newlink+0xd06/0x1acc net/core/rtnetlink.c:4022
[<ffffffff84fe8c60>] rtnetlink_rcv_msg+0x9e2/0xdbe net/core/rtnetlink.c:6911
[<ffffffff8532e990>] netlink_rcv_skb+0x216/0x3dc net/netlink/af_netlink.c:2543
[<ffffffff84fd69a6>] rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6938
[<ffffffff8532cc44>] netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
[<ffffffff8532cc44>] netlink_unicast+0x4f0/0x82c net/netlink/af_netlink.c:1348
[<ffffffff8532d7e4>] netlink_sendmsg+0x864/0xdc6 net/netlink/af_netlink.c:1892
[<ffffffff84ecc19e>] sock_sendmsg_nosec net/socket.c:713 [inline]
[<ffffffff84ecc19e>] __sock_sendmsg+0xcc/0x160 net/socket.c:728
[<ffffffff84eccdaa>] ____sys_sendmsg+0x5ce/0x79e net/socket.c:2568
[<ffffffff84ed591c>] ___sys_sendmsg+0x144/0x1e6 net/socket.c:2622
[<ffffffff84ed66d2>] __sys_sendmsg+0x188/0x22a net/socket.c:2654
[<ffffffff84ed67e4>] __do_sys_sendmsg net/socket.c:2659 [inline]
[<ffffffff84ed67e4>] __se_sys_sendmsg net/socket.c:2657 [inline]
[<ffffffff84ed67e4>] __riscv_sys_sendmsg+0x70/0xa2 net/socket.c:2657
[<ffffffff80072b1e>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff8623b45e>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff8626117a>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:197

Showing all locks held in the system:
1 lock held by kworker/R-mm_pe/13:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
3 locks held by kworker/u9:0/28:
3 locks held by kworker/u9:1/31:
2 locks held by kworker/1:1/34:
1 lock held by khungtaskd/38:
 #0: ffffffff883d7b80 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x68/0x288 kernel/locking/lockdep.c:6742
1 lock held by syslogd/2988:
2 locks held by getty/3144:
 #0: ffffaf801ce070a0 (&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+0xd7c/0x129a drivers/tty/n_tty.c:2211
2 locks held by syz-executor/3168:
1 lock held by kworker/R-wg-cr/3348:
1 lock held by kworker/R-wg-cr/3351:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
1 lock held by kworker/R-wg-cr/3354:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
1 lock held by kworker/R-wg-cr/3398:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
1 lock held by kworker/R-wg-cr/3401:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x36/0x3c4 kernel/workqueue.c:2676
1 lock held by kworker/R-wg-cr/3405:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
2 locks held by kworker/1:0/3782:
2 locks held by kworker/1:3/3861:
2 locks held by kworker/1:4/3863:
2 locks held by kworker/1:5/3864:
3 locks held by kworker/u9:2/4303:
2 locks held by kworker/1:2/4345:
2 locks held by kworker/1:6/4608:
2 locks held by kworker/1:7/4620:
1 lock held by kworker/1:8/4644:
2 locks held by kworker/1:9/4677:
2 locks held by kworker/1:10/4696:
2 locks held by syz.0.323/4700:
 #0: ffffffff88fcea40 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0xea/0x31c net/core/rtnetlink.c:567
 #1: ffffffff883e7d00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3741
2 locks held by kworker/1:11/4703:
2 locks held by syz-executor/4730:
2 locks held by kworker/1:12/4830:
1 lock held by kworker/R-wg-cr/4839:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
1 lock held by kworker/R-wg-cr/4842:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
1 lock held by kworker/R-wg-cr/4845:
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline]
 #0: ffffffff8828d768 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x73e/0xc72 kernel/workqueue.c:3533
3 locks held by kworker/u8:2/4986:
 #0: ffffaf80731dad48 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x848/0x1f3a kernel/workqueue.c:3211
 #1: ffff8f8006747bd0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f3a kernel/workqueue.c:3211
 #2: ffffffff89805d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:79
1 lock held by syz.1.358/5095:
 #0: ffffffff883e7d00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:3741
2 locks held by kworker/1:13/5112:
2 locks held by kworker/1:14/5133:
3 locks held by syz-executor/5135:
 #0: ffffffff88fbde20 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0xea/0x31c net/core/rtnetlink.c:567
 #1: ffffffff89805d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #1: ffffffff89805d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:335 [inline]
 #1: ffffffff89805d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x65e/0x1acc net/core/rtnetlink.c:4020
 #2: ffffffff883e7e38 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x266/0x384 kernel/rcu/tree_exp.h:302
3 locks held by kworker/u9:7/5138:
 #0: ffffaf8011a89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1f3a kernel/workqueue.c:3211
 #1: ffff8f80046a7bd0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x870/0x1f3a kernel/workqueue.c:3211
 #2: ffffffff89805d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:79

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller-g245aece3750d #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80074518>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff80003206>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff8005fa4c>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff8005fa4c>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff8005fae0>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff861ff5f8>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff861ff8b0>] nmi_trigger_cpumask_backtrace+0x2b6/0x458 lib/nmi_backtrace.c:62
[<ffffffff80080416>] arch_trigger_cpumask_backtrace+0x2c/0x3e arch/riscv/kernel/smp.c:348
[<ffffffff804d9498>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff804d9498>] check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
[<ffffffff804d9498>] watchdog+0xcf2/0x11de kernel/hung_task.c:399
[<ffffffff801d3ae2>] kthread+0x37e/0x7b6 kernel/kthread.c:464
[<ffffffff86261292>] ret_from_fork+0xe/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: 3348 Comm: kworker/R-wg-cr Not tainted 6.14.0-rc1-syzkaller-g245aece3750d #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue:  0x0 (wg-crypt-wg0)
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 : ffffffff8625ed56 ra : ffffffff8625eda6 sp : ffff8f8000017300
 gp : ffffffff89c21d80 tp : ffffaf802e641a00 t0 : 627a5db73d87dd3b
 t1 : fffffffef21df810 t2 : 0000000000000000 s0 : ffff8f8000017320
 s1 : 0000000000000002 a0 : 0000000000000001 a1 : ffffffff86842000
 a2 : 0000000000000003 a3 : 0000000000000103 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : ffffaf802e642510 a7 : 1ffff5f005cc84a2
 s2 : ffffffff90efc080 s3 : dfffffff00000000 s4 : 0000000000000001
 s5 : 0000000000000001 s6 : ffffaf803eb8e4c0 s7 : 1ffff1f000002e68
 s8 : 0000000000000000 s9 : ffffffff90efc080 s10: 0000000200000022
 s11: 1ffff5f00391a4d5 t3 : ffffaf802e6424f0 t4 : fffffffef21df810
 t5 : fffffffef21df811 t6 : 0000000000000000
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8625ed56>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff8625ed56>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
[<ffffffff8625ed56>] _raw_spin_unlock_irqrestore+0x36/0xd4 kernel/locking/spinlock.c:194
[<ffffffff816bc50e>] debug_object_active_state+0x274/0x2c4 lib/debugobjects.c:1055
[<ffffffff80376150>] debug_rcu_head_queue kernel/rcu/rcu.h:225 [inline]
[<ffffffff80376150>] __call_rcu_common.constprop.0+0x54/0x9f8 kernel/rcu/tree.c:3050
[<ffffffff80376b14>] call_rcu+0xc/0x14 kernel/rcu/tree.c:3172
[<ffffffff809cadf0>] slab_free_hook mm/slub.c:2317 [inline]
[<ffffffff809cadf0>] slab_free mm/slub.c:4609 [inline]
[<ffffffff809cadf0>] kmem_cache_free+0x17c/0x63e mm/slub.c:4711
[<ffffffff853c0bb4>] nf_conntrack_free+0x10c/0x4a4 net/netfilter/nf_conntrack_core.c:1729
[<ffffffff853c10c2>] nf_ct_destroy+0x176/0x272 net/netfilter/nf_conntrack_core.c:598
[<ffffffff853c72b0>] nf_ct_put include/net/netfilter/nf_conntrack.h:186 [inline]
[<ffffffff853c72b0>] nf_ct_put include/net/netfilter/nf_conntrack.h:183 [inline]
[<ffffffff853c72b0>] nf_conntrack_in+0x710/0x1c3c net/netfilter/nf_conntrack_core.c:2055
[<ffffffff853d7828>] ipv4_conntrack_in+0x20/0x2e net/netfilter/nf_conntrack_proto.c:207
[<ffffffff85395d24>] nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
[<ffffffff85395d24>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:626
[<ffffffff855b69e2>] nf_hook include/linux/netfilter.h:269 [inline]
[<ffffffff855b69e2>] NF_HOOK include/linux/netfilter.h:312 [inline]
[<ffffffff855b69e2>] ip_rcv+0x20e/0x44e net/ipv4/ip_input.c:567
[<ffffffff84f95f80>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5828
[<ffffffff84f96200>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:5941
[<ffffffff84f97400>] process_backlog+0x4f6/0x1cb0 net/core/dev.c:6289
[<ffffffff84f9bd96>] __napi_poll.constprop.0+0xaa/0x4b8 net/core/dev.c:7106
[<ffffffff84f9cbb6>] napi_poll net/core/dev.c:7175 [inline]
[<ffffffff84f9cbb6>] net_rx_action+0xa12/0xf10 net/core/dev.c:7297
[<ffffffff80156a72>] handle_softirqs+0x4b2/0x132e kernel/softirq.c:561
[<ffffffff80157bbe>] __do_softirq kernel/softirq.c:595 [inline]
[<ffffffff80157bbe>] invoke_softirq kernel/softirq.c:435 [inline]
[<ffffffff80157bbe>] __irq_exit_rcu+0x18c/0x550 kernel/softirq.c:662
[<ffffffff801595c4>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:678
[<ffffffff8623ad08>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:378
[<ffffffff862612ce>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:356