INFO: task kworker/0:6:29185 blocked for more than 143 seconds. Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:21688 pid:29185 tgid:29185 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call Trace: context_switch kernel/sched/core.c:5377 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6764 __schedule_loop kernel/sched/core.c:6841 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6856 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline] __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x705/0xa40 kernel/locking/rwsem.c:1526 wg_noise_handshake_consume_initiation+0x844/0xf70 drivers/net/wireguard/noise.c:632 wg_receive_handshake_packet drivers/net/wireguard/receive.c:144 [inline] wg_packet_handshake_receive_worker+0x5bb/0xf50 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 4 locks held by kworker/u8:1/12: #0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc90000117c60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90000117c60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffffffff8fcb3c10 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 net/core/net_namespace.c:606 #3: ffff888068f1d4e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249 1 lock held by kworker/R-mm_pe/13: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 2 locks held by kworker/1:0/25: 1 lock held by khungtaskd/30: #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746 2 locks held by kworker/1:1/52: 2 locks held by kworker/1:2/1169: 4 locks held by kworker/u8:8/5077: #0: ffff888036ff0148 ((wq_completion)wg-kex-wg2#123){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff888036ff0148 ((wq_completion)wg-kex-wg2#123){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc90010247c60 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90010247c60 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffff888040a9d308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0x120/0xf30 drivers/net/wireguard/noise.c:529 #3: ffff88807ab4c5b8 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0x132/0xf30 drivers/net/wireguard/noise.c:530 2 locks held by getty/5596: #0: ffff88814de720a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 2 locks held by kworker/1:4/5891: 1 lock held by kworker/1:7/7587: 4 locks held by kworker/1:8/7588: 1 lock held by kworker/R-wg-cr/15953: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 1 lock held by kworker/R-wg-cr/15955: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 1 lock held by kworker/R-wg-cr/15957: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 2 locks held by kworker/0:0/21645: #0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc9000437fc60 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc9000437fc60 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 2 locks held by kworker/1:3/23595: 1 lock held by kworker/R-wg-cr/24297: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 1 lock held by kworker/R-wg-cr/24298: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 2 locks held by kworker/u8:10/24536: 1 lock held by kworker/R-wg-cr/26585: 1 lock held by kworker/R-wg-cr/26586: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2676 1 lock held by kworker/R-wg-cr/28825: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 4 locks held by kworker/0:6/29185: #0: ffff88807ab29948 ((wq_completion)wg-kex-wg2#124){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88807ab29948 ((wq_completion)wg-kex-wg2#124){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc90003c97c60 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((typeof(*((worker))) *)(( unsigned long)((worker)))); (typeof((typeof(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90003c97c60 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((typeof(*((worker))) *)(( unsigned long)((worker)))); (typeof((typeof(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffff888040a9d308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x156/0xf70 drivers/net/wireguard/noise.c:598 #3: ffff88807ab4c5b8 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x844/0xf70 drivers/net/wireguard/noise.c:632 1 lock held by kworker/R-wg-cr/31288: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 2 locks held by kworker/1:5/32717: 2 locks held by kworker/1:6/2449: 2 locks held by kworker/1:9/5990: 2 locks held by kworker/1:10/5991: 2 locks held by kworker/1:11/5992: 1 lock held by kworker/R-wg-cr/8022: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2676 1 lock held by kworker/R-wg-cr/8046: 3 locks held by syz-executor/9668: #0: ffff8880960dcd80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:480 [inline] #0: ffff8880960dcd80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2677 #1: ffff8880960dc078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x5c8/0x11c0 net/bluetooth/hci_sync.c:5185 #2: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline] #2: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996 1 lock held by syz-executor/9671: #0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline] #0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996 1 lock held by kworker/R-wg-cr/9743: #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2734 [inline] #0: ffffffff8e7e3e48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3533 1 lock held by rm/9960: ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline] watchdog+0x1058/0x10a0 kernel/hung_task.c:399 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 15957 Comm: kworker/R-wg-cr Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: 0x0 (wg-crypt-wg2) RIP: 0010:nft_synproxy_eval_v4+0x3dd/0x610 Code: 24 20 48 8b 5c 24 28 48 89 de 48 8b 54 24 18 4c 89 e9 e8 f6 23 ef ff 48 89 df e8 ee 64 90 ff 41 bf 02 00 00 00 48 8b 5c 24 30 <48> 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 d4 00 00 00 44 89 RSP: 0018:ffffc90000a180c0 EFLAGS: 00000286 RAX: 0fb28a7689e4a800 RBX: ffffc90000a183a0 RCX: ffffffff819b316a RDX: dffffc0000000000 RSI: ffffffff8c0aa680 RDI: ffffffff8c608a00 RBP: ffffc90000a18190 R08: ffffffff942f985f R09: 1ffffffff285f30b R10: dffffc0000000000 R11: fffffbfff285f30c R12: 1ffff92000143042 R13: ffffc90000a18210 R14: dffffc0000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000404030 CR3: 000000000e738000 CR4: 00000000003526f0 DR0: 0000000080000001 DR1: 0000000000000003 DR2: 00000000000048de DR3: 000000000000013a DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288 nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5828 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5941 process_backlog+0x662/0x15b0 net/core/dev.c:6289 __napi_poll+0xcb/0x490 net/core/dev.c:7106 napi_poll net/core/dev.c:7175 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7297 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__mutex_trylock_common+0x0/0x2e0 kernel/locking/mutex.c:79 Code: cc cc 44 89 f1 80 e1 07 80 c1 03 38 c1 7c bf 4c 89 f7 e8 43 19 8c 00 eb b5 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 RSP: 0018:ffffc90002ec7ab8 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffffc90002ec7b88 RCX: ffffffff8199e4ed RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e7e3de0 RBP: ffffc90002ec7c48 R08: ffffffff901b5277 R09: 1ffffffff2036a4e R10: dffffc0000000000 R11: fffffbfff2036a4f R12: 1ffff920005d8f6c R13: ffffffff8e7e3e48 R14: ffffffff8e7e3de0 R15: 0000000000000000 __mutex_trylock kernel/locking/mutex.c:127 [inline] __mutex_lock_common kernel/locking/mutex.c:588 [inline] __mutex_lock+0x1b7/0x1010 kernel/locking/mutex.c:730 worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2676 rescuer_thread+0x3ed/0x10a0 kernel/workqueue.c:3478 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 IPVS: wlc: UDP 224.0.0.2:0 - no destination available