INFO: task syz.6.1227:9929 blocked for more than 143 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.6.1227 state:D stack:0 pid:9929 tgid:9929 ppid:8393 task_flags:0x400040 flags:0x00800019 Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189 __schedule_loop kernel/sched/core.c:7268 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7283 request_wait_answer fs/fuse/dev.c:590 [inline] __fuse_request_send fs/fuse/dev.c:604 [inline] __fuse_simple_request+0xac4/0x12f4 fs/fuse/dev.c:699 fuse_simple_request fs/fuse/fuse_i.h:1262 [inline] fuse_flush+0x400/0x5e8 fs/fuse/file.c:500 filp_flush+0xb4/0x184 fs/open.c:1467 filp_close+0x28/0x48 fs/open.c:1480 __range_close fs/file.c:794 [inline] __do_sys_close_range fs/file.c:855 [inline] __se_sys_close_range fs/file.c:819 [inline] __arm64_sys_close_range+0x304/0x800 fs/file.c:819 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 Showing all locks held in the system: 1 lock held by kthreadd/2: 3 locks held by kworker/0:0/9: 4 locks held by kworker/u8:0/12: 1 lock held by kworker/R-mm_pe/13: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 3 locks held by kworker/u8:1/15: 1 lock held by kworker/1:0/24: 4 locks held by kworker/1:1/26: 1 lock held by khungtaskd/31: #0: ffff800088bf70c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline] #0: ffff800088bf70c0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffff800088bf70c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 kernel/locking/lockdep.c:6775 3 locks held by kworker/u8:2/39: 3 locks held by kworker/u8:3/40: 2 locks held by kworker/0:2/866: 4 locks held by kworker/1:2/1039: 4 locks held by kworker/u8:4/1058: 3 locks held by kworker/u8:5/1251: 4 locks held by kworker/R-bat_e/2853: 3 locks held by kworker/u8:6/2926: 3 locks held by kworker/u8:7/3046: 3 locks held by kworker/u8:8/3097: 3 locks held by kworker/u8:9/3196: 3 locks held by kworker/u8:10/3350: #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397 #1: ffff80009b167c40 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff80009b167c40 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397 #2: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: idle_cull_fn+0xd0/0x3dc kernel/workqueue.c:3011 3 locks held by kworker/u8:11/3513: 3 locks held by kworker/u8:12/3777: 2 locks held by kworker/u8:13/3858: 3 locks held by udevd/4344: 4 locks held by kworker/1:3/4388: 2 locks held by dhcpcd/4400: 1 lock held by dhcpcd/4401: 2 locks held by getty/4493: #0: ffff0000ca8bc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009238e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf70 drivers/tty/n_tty.c:2211 6 locks held by kworker/u9:4/4719: #0: ffff0000ccbf7140 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000ccbf7140 ((wq_completion)hci4){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397 #1: ffff800099b67c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff800099b67c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397 #2: ffff0000f741cea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x178/0x374 net/bluetooth/hci_sync.c:331 #3: ffff0000f741c0b8 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d8/0x938 net/bluetooth/hci_sync.c:5764 #4: ffff800089e296c0 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2136 [inline] #4: ffff800089e296c0 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x334 net/bluetooth/hci_conn.c:1411 #5: ffff0000c3093af8 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x80/0x450 net/bluetooth/l2cap_core.c:1779 4 locks held by kworker/u9:6/4726: #0: ffff0000d4dad940 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000d4dad940 ((wq_completion)hci2){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397 #1: ffff800099b27c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff800099b27c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397 #2: ffff0000d0dd0ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x178/0x374 net/bluetooth/hci_sync.c:331 #3: ffff0000d0dd00b8 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d8/0x938 net/bluetooth/hci_sync.c:5764 1 lock held by kworker/R-wg-cr/4774: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 1 lock held by kworker/R-wg-cr/4777: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/4778: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 2 locks held by kworker/1:4/4794: 1 lock held by kworker/R-wg-cr/4795: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/4796: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 1 lock held by kworker/R-wg-cr/4797: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 2 locks held by kworker/0:3/4798: 2 locks held by kworker/0:4/4805: 2 locks held by kworker/0:5/4806: 2 locks held by kworker/0:6/4813: 4 locks held by kworker/0:7/4826: #0: ffff0000d5b1cd40 ((wq_completion)wg-kex-wg2#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000d5b1cd40 ((wq_completion)wg-kex-wg2#2){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397 #1: ffff80009bf47c40 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))))((unsigned long)((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))) + (((__per_cpu_offset[(cpu)]))))); })->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff80009bf47c40 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))))((unsigned long)((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))) + (((__per_cpu_offset[(cpu)]))))); })->work)){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397 #2: ffff0000d69ad3c0 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x134/0x53c drivers/net/wireguard/noise.c:598 #3: ffff0000ef2bc888 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x2a0/0x53c drivers/net/wireguard/noise.c:643 2 locks held by kworker/1:5/4889: 1 lock held by kworker/R-bond1/4900: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 2 locks held by kworker/1:6/4922: 2 locks held by kworker/1:7/4923: 4 locks held by kworker/u8:14/7407: #0: ffff0000c004b940 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000c004b940 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397 #1: ffff800093557c40 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff800093557c40 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397 #2: ffff800089cca300 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000f1070780 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6646 [inline] #3: ffff0000f1070780 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2454 [inline] #3: ffff0000f1070780 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x144/0x10e8 net/wireless/reg.c:2469 1 lock held by kworker/R-wg-cr/7949: 1 lock held by kworker/R-wg-cr/7951: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 3 locks held by kworker/u8:15/8179: 3 locks held by kworker/u8:16/8180: 3 locks held by kworker/u8:17/8181: 3 locks held by kworker/u8:18/8182: 3 locks held by kworker/u8:19/8183: 3 locks held by kworker/u8:20/8184: 3 locks held by kworker/u8:21/8185: 4 locks held by kworker/u8:22/8186: 3 locks held by kworker/u8:23/8187: #0: ffff0000ceadd940 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000ceadd940 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397 #1: ffff800093037c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff800093037c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397 #2: ffff800089cca300 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:24/8188: 4 locks held by kworker/u8:25/8191: 3 locks held by kworker/u8:26/8192: 3 locks held by kworker/u8:27/8193: 3 locks held by kworker/u8:28/8194: 1 lock held by kworker/R-wg-cr/8413: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8414: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 1 lock held by kworker/R-wg-cr/8415: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 3 locks held by syz-executor/8598: 1 lock held by kworker/R-wg-cr/8662: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8663: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 1 lock held by kworker/R-wg-cr/8665: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 3 locks held by syz-executor/8901: 1 lock held by kworker/R-wg-cr/8915: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8916: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2787 [inline] #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xa58/0xd90 kernel/workqueue.c:3649 1 lock held by kworker/R-wg-cr/8917: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 4 locks held by syz-executor/9107: 1 lock held by kworker/R-wg-cr/9221: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/9225: #0: ffff800088a9df40 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x344 kernel/workqueue.c:2729 2 locks held by syz.5.1233/9960: 2 locks held by kworker/1:8/9965: 1 lock held by syz-executor/9967: =============================================