batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready INFO: task syz-executor.4:17611 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28112 17611 8162 0x80000002 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 __synchronize_srcu+0x124/0x210 kernel/rcu/srcutree.c:936 blk_mq_quiesce_queue+0x162/0x1e0 block/blk-mq.c:236 nbd_clear_que+0x65/0x160 drivers/block/nbd.c:763 nbd_clear_sock drivers/block/nbd.c:1147 [inline] nbd_config_put+0x182/0x870 drivers/block/nbd.c:1162 nbd_release+0xf4/0x170 drivers/block/nbd.c:1461 __blkdev_put+0x636/0x870 fs/block_dev.c:1819 blkdev_close+0x86/0xb0 fs/block_dev.c:1888 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath+0x3f0/0x4a0 arch/x86/entry/common.c:271 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:407 RIP: 0033:0x7f78b0afc409 Code: Bad RIP value. RSP: 002b:00007f78af471118 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: 0000000000000000 RBX: 00007f78b0c0ef80 RCX: 00007f78b0afc409 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f78b0b57367 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5d54e90f R14: 00007f78af471300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/u4:0/7: 2 locks held by kworker/1:0/19: 2 locks held by kworker/u4:2/200: #0: 0000000017d8ded7 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000001f09aff2 ((work_completion)(&sub_info->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 1 lock held by khungtaskd/1567: #0: 000000003d54e799 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by syz-executor.0/8157: #0: 000000003ad4db8f (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #0: 000000003ad4db8f (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 4 locks held by kworker/u5:4/8185: #0: 00000000492233f0 ((wq_completion)"%s"hdev->name#2){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000003bfb452c ((work_completion)(&hdev->rx_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 0000000000abf9c8 (&hdev->lock){+.+.}, at: hci_remote_features_evt net/bluetooth/hci_event.c:2976 [inline] #2: 0000000000abf9c8 (&hdev->lock){+.+.}, at: hci_event_packet+0x2a9d/0x7e20 net/bluetooth/hci_event.c:5853 #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1245 [inline] #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_remote_features_evt net/bluetooth/hci_event.c:3009 [inline] #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_event_packet+0x5c8b/0x7e20 net/bluetooth/hci_event.c:5853 4 locks held by kworker/u5:5/8188: #0: 0000000026c9ce05 ((wq_completion)"%s"hdev->name#2){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000003287678a ((work_completion)(&hdev->rx_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 0000000048300f17 (&hdev->lock){+.+.}, at: hci_remote_features_evt net/bluetooth/hci_event.c:2976 [inline] #2: 0000000048300f17 (&hdev->lock){+.+.}, at: hci_event_packet+0x2a9d/0x7e20 net/bluetooth/hci_event.c:5853 #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1245 [inline] #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_remote_features_evt net/bluetooth/hci_event.c:3009 [inline] #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_event_packet+0x5c8b/0x7e20 net/bluetooth/hci_event.c:5853 3 locks held by kworker/0:4/9352: #0: 0000000051f20b3a ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000004679718e ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000006fbdd806 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 3 locks held by syz-executor.2/11535: #0: 000000006de92b05 (&hdev->req_lock){+.+.}, at: hci_dev_do_close+0x122/0x1020 net/bluetooth/hci_core.c:1629 #1: 00000000bb86f54d (&hdev->lock){+.+.}, at: hci_dev_do_close+0x343/0x1020 net/bluetooth/hci_core.c:1674 #2: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1260 [inline] #2: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_conn_hash_flush+0xda/0x260 net/bluetooth/hci_conn.c:1512 1 lock held by syz-executor.3/14038: #0: 000000003ad4db8f (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: 000000003ad4db8f (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667 2 locks held by syz-executor.4/17611: #0: 0000000077532679 (&bdev->bd_mutex){+.+.}, at: __blkdev_put+0xfc/0x870 fs/block_dev.c:1806 #1: 00000000238fa269 (&nbd->config_lock){+.+.}, at: refcount_dec_and_mutex_lock lib/refcount.c:311 [inline] #1: 00000000238fa269 (&nbd->config_lock){+.+.}, at: refcount_dec_and_mutex_lock+0x4a/0x80 lib/refcount.c:306 3 locks held by syz-executor.1/17633: #0: 00000000069ae290 (&hdev->req_lock){+.+.}, at: hci_dev_do_close+0x122/0x1020 net/bluetooth/hci_core.c:1629 #1: 0000000088fd63b6 (&hdev->lock){+.+.}, at: hci_dev_do_close+0x343/0x1020 net/bluetooth/hci_core.c:1674 #2: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1260 [inline] #2: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_conn_hash_flush+0xda/0x260 net/bluetooth/hci_conn.c:1512 3 locks held by syz-executor.4/17649: 1 lock held by systemd-udevd/17669: 2 locks held by syz-executor.5/17685: 1 lock held by syz-executor.5/17698: 1 lock held by syz-executor.1/17700: #0: 000000006fbdd806 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000006fbdd806 (rtnl_mutex){+.+.}, at: rtnl_newlink+0x7f9/0x15c0 net/core/rtnetlink.c:3097 1 lock held by syz-executor.4/17708: #0: 000000006fbdd806 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000006fbdd806 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 4 locks held by kworker/u5:0/17711: #0: 00000000f7ec863a ((wq_completion)"%s"hdev->name#2){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000d1f0e87a ((work_completion)(&hdev->rx_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000a8cbae49 (&hdev->lock){+.+.}, at: hci_remote_features_evt net/bluetooth/hci_event.c:2976 [inline] #2: 00000000a8cbae49 (&hdev->lock){+.+.}, at: hci_event_packet+0x2a9d/0x7e20 net/bluetooth/hci_event.c:5853 #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1245 [inline] #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_remote_features_evt net/bluetooth/hci_event.c:3009 [inline] #3: 00000000d3f3f054 (hci_cb_list_lock){+.+.}, at: hci_event_packet+0x5c8b/0x7e20 net/bluetooth/hci_event.c:5853 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Workqueue: bat_events batadv_tt_purge RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:97 Code: ff 48 89 df e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 RSP: 0018:ffff8880ba107bf8 EFLAGS: 00000086 RAX: 1ffff110174249a6 RBX: dffffc0000000000 RCX: 7fffffffffffffff RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880ba124cc0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8c66505b R12: ffff8880ba124cc0 R13: 0000000000000000 R14: 7fffffffffffffff R15: ffff8880ba124d30 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac22a405e0 CR3: 00000000969cc000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __next_base kernel/time/hrtimer.c:480 [inline] __hrtimer_next_event_base+0x1f/0x260 kernel/time/hrtimer.c:500 __hrtimer_get_next_event kernel/time/hrtimer.c:568 [inline] hrtimer_update_next_event kernel/time/hrtimer.c:594 [inline] hrtimer_interrupt+0x6b1/0x9e0 kernel/time/hrtimer.c:1588 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184 Code: 48 c7 c0 88 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 7c 31 d8 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 fb eb e6 f8 eb c0 0f 0b 0f 0b 48 c7 c7 88 RSP: 0018:ffff8880ba107e08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: 0000000000000286 RCX: 1ffff11016b46d52 RDX: dffffc0000000000 RSI: ffff8880b5a36a70 RDI: 0000000000000286 RBP: ffff8880ba124cc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809add05f0 R13: 0000000000000bb8 R14: ffff88809add0590 R15: dffffc0000000000 hrtimer_start include/linux/hrtimer.h:398 [inline] bcm_tx_start_timer+0x112/0x1b0 net/can/bcm.c:384 bcm_tx_timeout_tsklet+0x13c/0x3a0 net/can/bcm.c:416 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189 spin_unlock_bh include/linux/spinlock.h:374 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2541 [inline] batadv_tt_purge+0x386/0xa00 net/batman-adv/translation-table.c:3812 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415