INFO: task syz.0.176:4312 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:syz.0.176       state:D stack:0     pid:4312  tgid:4311  ppid:3173   task_flags:0x400140 flags:0x0000000c
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
[<ffffffff801b8b84>] __flush_workqueue+0x34c/0xfca kernel/workqueue.c:4002
[<ffffffff83220230>] peer_remove_after_dead+0xb2/0x310 drivers/net/wireguard/peer.c:116
[<ffffffff832210de>] wg_peer_remove+0x80/0xf8 drivers/net/wireguard/peer.c:164
[<ffffffff832408d8>] wg_set_device+0x1084/0x12d0 drivers/net/wireguard/netlink.c:570
[<ffffffff854a9428>] genl_family_rcv_msg_doit+0x206/0x2e6 net/netlink/genetlink.c:1115
[<ffffffff854aab70>] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
[<ffffffff854aab70>] genl_rcv_msg+0x514/0x78e net/netlink/genetlink.c:1210
[<ffffffff854a66ce>] netlink_rcv_skb+0x206/0x3be net/netlink/af_netlink.c:2534
[<ffffffff854a8c28>] genl_rcv+0x36/0x4c net/netlink/genetlink.c:1219
[<ffffffff854a4982>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
[<ffffffff854a4982>] netlink_unicast+0x4f0/0x82c net/netlink/af_netlink.c:1339
[<ffffffff854a551c>] netlink_sendmsg+0x85e/0xdd6 net/netlink/af_netlink.c:1883
[<ffffffff8501f7b6>] sock_sendmsg_nosec net/socket.c:712 [inline]
[<ffffffff8501f7b6>] __sock_sendmsg+0xcc/0x160 net/socket.c:727
[<ffffffff85020432>] ____sys_sendmsg+0x63e/0x79c net/socket.c:2566
[<ffffffff850294be>] ___sys_sendmsg+0x144/0x1e6 net/socket.c:2620
[<ffffffff8502a45e>] __sys_sendmsg+0x188/0x246 net/socket.c:2652
[<ffffffff8502a58c>] __do_sys_sendmsg net/socket.c:2657 [inline]
[<ffffffff8502a58c>] __se_sys_sendmsg net/socket.c:2655 [inline]
[<ffffffff8502a58c>] __riscv_sys_sendmsg+0x70/0xa2 net/socket.c:2655
[<ffffffff800769ae>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:112
[<ffffffff862fcc32>] do_trap_ecall_u+0x396/0x530 arch/riscv/kernel/traps.c:341
[<ffffffff863250ca>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:197
INFO: task syz.1.177:4314 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:syz.1.177       state:D stack:0     pid:4314  tgid:4313  ppid:3175   task_flags:0x400040 flags:0x00000008
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
[<ffffffff8630b1d8>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6935
[<ffffffff8630ec7c>] __mutex_lock_common kernel/locking/mutex.c:679 [inline]
[<ffffffff8630ec7c>] __mutex_lock+0x9be/0x1292 kernel/locking/mutex.c:747
[<ffffffff8630f564>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:799
[<ffffffff8514d0ae>] rtnl_lock net/core/rtnetlink.c:80 [inline]
[<ffffffff8514d0ae>] rtnetlink_rcv_msg+0x3e2/0xdbe net/core/rtnetlink.c:6950
[<ffffffff854a66ce>] netlink_rcv_skb+0x206/0x3be net/netlink/af_netlink.c:2534
[<ffffffff8513a524>] rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6971
[<ffffffff854a4982>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
[<ffffffff854a4982>] netlink_unicast+0x4f0/0x82c net/netlink/af_netlink.c:1339
[<ffffffff854a551c>] netlink_sendmsg+0x85e/0xdd6 net/netlink/af_netlink.c:1883
[<ffffffff8501f7b6>] sock_sendmsg_nosec net/socket.c:712 [inline]
[<ffffffff8501f7b6>] __sock_sendmsg+0xcc/0x160 net/socket.c:727
[<ffffffff8501faea>] sock_write_iter+0x2a0/0x3ba net/socket.c:1131
[<ffffffff80bf5822>] new_sync_write fs/read_write.c:593 [inline]
[<ffffffff80bf5822>] vfs_write+0x56c/0xb12 fs/read_write.c:686
[<ffffffff80bf628e>] ksys_write+0x1f2/0x234 fs/read_write.c:738
[<ffffffff80bf633e>] __do_sys_write fs/read_write.c:749 [inline]
[<ffffffff80bf633e>] __se_sys_write fs/read_write.c:746 [inline]
[<ffffffff80bf633e>] __riscv_sys_write+0x6e/0xa0 fs/read_write.c:746
[<ffffffff800769ae>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:112
[<ffffffff862fcc32>] do_trap_ecall_u+0x396/0x530 arch/riscv/kernel/traps.c:341
[<ffffffff863250ca>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:197

Showing all locks held in the system:
1 lock held by khungtaskd/38:
 #0: ffffffff883dc420 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6766
2 locks held by kworker/1:2/827:
3 locks held by kworker/u9:6/2935:
1 lock held by syslogd/2987:
1 lock held by dhcpcd/3035:
 #0: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:80
2 locks held by getty/3141:
 #0: ffffaf801c1620a0 (&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/3167:
3 locks held by kworker/u8:1/3236:
 #0: ffffaf8018bc9148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3213
 #1: ffff8f800cda7b70 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f32 kernel/workqueue.c:3213
 #2: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:80
2 locks held by kworker/1:1/3748:
2 locks held by kworker/1:3/3827:
3 locks held by kworker/1:4/3829:
2 locks held by kworker/1:0/4133:
2 locks held by kworker/1:5/4194:
2 locks held by kworker/1:6/4274:
5 locks held by kworker/1:7/4279:
3 locks held by kworker/u9:1/4284:
2 locks held by kworker/1:8/4289:
4 locks held by syz.0.176/4312:
 #0: ffffffff89909610 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x4c net/netlink/genetlink.c:1218
 #1: ffffffff89909548 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
 #1: ffffffff89909548 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
 #1: ffffffff89909548 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
 #1: ffffffff89909548 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x532/0x78e net/netlink/genetlink.c:1209
 #2: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:80
 #3: ffffaf80188d94e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_set_device+0xea/0x12d0 drivers/net/wireguard/netlink.c:515
1 lock held by syz.1.177/4314:
 #0: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #0: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x3e2/0xdbe net/core/rtnetlink.c:6950
2 locks held by kworker/1:9/4317:
1 lock held by syz-executor/4319:
 #0: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:80
1 lock held by syz-executor/4322:
 #0: ffffffff89866e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:80
4 locks held by kworker/1:11/4325:
3 locks held by kworker/0:1/4326:
3 locks held by kworker/u9:2/4327:
3 locks held by kworker/1:12/4328:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 38 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: 4325 Comm: kworker/1:11 Not tainted 6.16.0-rc1-syzkaller-g306e57988197 #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Workqueue:  0x0 (wg-crypt-wg0)
epc : __sanitizer_cov_trace_const_cmp1+0x0/0x1c kernel/kcov.c:299
 ra : resolve_normal_ct net/netfilter/nf_conntrack_core.c:1895 [inline]
 ra : nf_conntrack_in+0x52e/0x1c3c net/netfilter/nf_conntrack_core.c:2037
epc : ffffffff804eb558 ra : ffffffff85543aee sp : ffff8f8000016b60
 gp : ffffffff89c7e9c0 tp : ffffaf80115d8000 t0 : ffffaf803a6b0738
 t1 : fffff5ef074d60c0 t2 : fffffffff2f20000 s0 : ffff8f8000016d70
 s1 : dfffffff00000000 a0 : 0000000000000001 a1 : 0000000000000000
 a2 : 0000000000f00000 a3 : ffffffff85543aa8 a4 : 0000000000000000
 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffaf803a6b0603
 s2 : ffffaf802f9548c0 s3 : ffff8f8000016c90 s4 : ffff8f8000016e70
 s5 : 1ffff1f000002dd2 s6 : ffffaf803a6b0650 s7 : 0000000000000000
 s8 : 0000000000000003 s9 : 0000000000000000 s10: ffffaf803a6b0650
 s11: 1ffff5f005f2a925 t3 : d3777d9300000000 t4 : fffff5ef074d60c0
 t5 : fffff5ef074d60c1 t6 : 0000000000000002
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff804eb558>] __sanitizer_cov_trace_const_cmp1+0x0/0x1c kernel/kcov.c:295
[<ffffffff855544d8>] ipv4_conntrack_local+0xf6/0x200 net/netfilter/nf_conntrack_proto.c:229
[<ffffffff855127e8>] nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
[<ffffffff855127e8>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:623
[<ffffffff85752e66>] nf_hook include/linux/netfilter.h:272 [inline]
[<ffffffff85752e66>] __ip_local_out+0x498/0xbb2 net/ipv4/ip_output.c:118
[<ffffffff857535ae>] ip_local_out+0x2e/0x1a8 net/ipv4/ip_output.c:127
[<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
[<ffffffff8015f8fa>] __do_softirq kernel/softirq.c:613 [inline]
[<ffffffff8015f8fa>] invoke_softirq kernel/softirq.c:453 [inline]
[<ffffffff8015f8fa>] __irq_exit_rcu+0x18c/0x550 kernel/softirq.c:680
[<ffffffff80161300>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:696
[<ffffffff862fc3f4>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:388
[<ffffffff86325232>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:360