INFO: task syz.5.341:6470 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.5.341 state:D stack:0 pid:6470 tgid:6465 ppid:5242 task_flags:0x400140 flags:0x00800011 Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 __schedule_loop kernel/sched/core.c:7361 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7376 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7433 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x5d4/0x1078 kernel/locking/mutex.c:821 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:874 sync_bdevs+0x214/0x3d4 block/bdev.c:1369 ksys_sync+0xc4/0x118 fs/sync.c:105 __arm64_sys_sync+0x14/0x24 fs/sync.c:111 __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+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 INFO: task syz.5.341:6479 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.5.341 state:D stack:0 pid:6479 tgid:6465 ppid:5242 task_flags:0x400040 flags:0x00800011 Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 __schedule_loop kernel/sched/core.c:7361 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7376 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7433 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x5d4/0x1078 kernel/locking/mutex.c:821 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:874 sync_bdevs+0x214/0x3d4 block/bdev.c:1369 ksys_sync+0xc4/0x118 fs/sync.c:105 __arm64_sys_sync+0x14/0x24 fs/sync.c:111 __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+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 Showing all locks held in the system: locks held by pool_workqueue_/3: 1, on CPU#0: #0: ffff800089986ea8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline] #0: ffff800089986ea8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x30c/0x66c kernel/rcu/tree_exp.h:966 locks held by kworker/u8:0/12: 3, last CPU#0: #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff80008f917c20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff80008f917c20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000d4311258 (&devlink->lock_key#9){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:320 locks held by kworker/u8:1/13: 3, last CPU#0: #0: ffff0000d767b940 ((wq_completion)krds_cp_wq#2/0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000d767b940 ((wq_completion)krds_cp_wq#2/0){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff80008f927c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff80008f927c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eaf980 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 locks held by khungtaskd/31: 1, last CPU#0: #0: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 kernel/locking/lockdep.c:6871 locks held by kworker/u8:4/58: 3, last CPU#0: #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800090fc7c20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800090fc7c20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000d8992258 (&devlink->lock_key#3){+.+.}-{4:4}, at: devl_trylock+0x24/0x34 net/devlink/core.c:320 locks held by kworker/u8:8/3855: 3, last CPU#0: #0: ffff0000d767a140 ((wq_completion)krds_cp_wq#2/1){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000d767a140 ((wq_completion)krds_cp_wq#2/1){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800099b37c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800099b37c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eaf680 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 locks held by dhcpcd/4399: 1, on CPU#0: #0: ffff80008aa8ec80 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 locks held by getty/4491: 2, on CPU#1: #0: ffff0000d1a1a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009318e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf78 drivers/tty/n_tty.c:2211 locks held by udevd/4698: 1, on CPU#0: #0: ffff0000c5772350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 block/bdev.c:990 locks held by syz-executor/4712: 1, on CPU#0: #0: ffff0000d09b4ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close+0x2c/0xbc net/bluetooth/hci_core.c:500 locks held by kworker/u8:12/5169: 2, last CPU#0: #0: ffff0000ce6e7940 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000ce6e7940 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff8000971b7c20 ((work_completion)(&(&bat_priv->dat.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff8000971b7c20 ((work_completion)(&(&bat_priv->dat.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 locks held by kworker/u8:15/5172: 2, last CPU#0: #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c004c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097177c20 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097177c20 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 locks held by kworker/u8:16/5173: 3, last CPU#0: #0: ffff0000d7679140 ((wq_completion)krds_cp_wq#2/3){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000d7679140 ((wq_completion)krds_cp_wq#2/3){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097157c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097157c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eaf080 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 locks held by kworker/u8:25/5182: 4, last CPU#0: #0: ffff0000d7679940 ((wq_completion)krds_cp_wq#2/4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000d7679940 ((wq_completion)krds_cp_wq#2/4){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097077c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097077c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eaed80 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 #3: ffff0000cd368fe0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline] #3: ffff0000cd368fe0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x27c/0xe60 net/ipv6/af_inet6.c:292 locks held by kworker/u8:26/5183: 6, on CPU#0: #0: ffff0000c004e140 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c004e140 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097067c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097067c20 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff80008aa81be8 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x104/0x6c4 net/core/net_namespace.c:677 #3: ffff0000d8997128 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #3: ffff0000d8997128 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:124 [inline] #3: ffff0000d8997128 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x108/0x30c net/devlink/core.c:581 #4: ffff0000d1a77258 (&devlink->lock_key#11){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:314 [inline] #4: ffff0000d1a77258 (&devlink->lock_key#11){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:125 [inline] #4: ffff0000d1a77258 (&devlink->lock_key#11){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x11c/0x30c net/devlink/core.c:581 #5: ffff80008aa8ec80 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 locks held by kworker/u8:27/5184: 4, last CPU#0: #0: ffff0000c8eff140 ((wq_completion)krds_cp_wq#2/7){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c8eff140 ((wq_completion)krds_cp_wq#2/7){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097057c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097057c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eae480 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 #3: ffff0000c88f45e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline] #3: ffff0000c88f45e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x27c/0xe60 net/ipv6/af_inet6.c:292 locks held by kworker/u8:28/5185: 3, last CPU#0: #0: ffff0000d7678940 ((wq_completion)krds_cp_wq#2/5){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000d7678940 ((wq_completion)krds_cp_wq#2/5){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097247c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097247c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eaea80 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 locks held by kworker/u8:32/5189: 4, last CPU#0: #0: ffff0000c8efa140 ((wq_completion)krds_cp_wq#2/6){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c8efa140 ((wq_completion)krds_cp_wq#2/6){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff8000aa5c7c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff8000aa5c7c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eae780 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 #3: ffff0000ceca0260 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline] #3: ffff0000ceca0260 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x27c/0xe60 net/ipv6/af_inet6.c:292 locks held by kworker/u8:34/5191: 4, last CPU#0: #0: ffff0000d767a940 ((wq_completion)krds_cp_wq#2/2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000d767a940 ((wq_completion)krds_cp_wq#2/2){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097047c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097047c20 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff0000f6eaf380 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x170/0x794 net/rds/tcp_connect.c:118 #3: ffff0000ceca45e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline] #3: ffff0000ceca45e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x27c/0xe60 net/ipv6/af_inet6.c:292 locks held by kworker/u8:35/5192: 3, last CPU#0: #0: ffff0000c004b940 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #0: ffff0000c004b940 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3479 #1: ffff800097037c20 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3371 [inline] #1: ffff800097037c20 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3479 #2: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #2: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: gc_worker+0x210/0x144c net/netfilter/nf_conntrack_core.c:1532 locks held by syz.5.341/6470: 1, on CPU#0: #0: ffff0000c5772350 (&disk->open_mutex){+.+.}-{4:4}, at: sync_bdevs+0x214/0x3d4 block/bdev.c:1369 locks held by syz.5.341/6479: 1, on CPU#0: #0: ffff0000c5772350 (&disk->open_mutex){+.+.}-{4:4}, at: sync_bdevs+0x214/0x3d4 block/bdev.c:1369 locks held by syz.6.515/7438: 1, on CPU#0: #0: ffff80008aa8ec80 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 locks held by syz.3.891/8975: 2, on CPU#0: #0: ffff80008aa8ec80 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #1: ffff800089986ea8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline] #1: ffff800089986ea8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x30c/0x66c kernel/rcu/tree_exp.h:966 locks held by syz-executor/9263: 1, on CPU#0: #0: ffff0001208ccea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close+0x2c/0xbc net/bluetooth/hci_core.c:500 locks held by syz-executor/9267: 2, last CPU#0: #0: ffff0000d4305700 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline] #0: ffff0000d4305700 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1a8/0x46c mm/util.c:579 #1: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x4c/0x224 mm/pgtable-generic.c:290 locks held by syz-executor/9271: 3, last CPU#0: #0: ffff000106e17110 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x3c/0x624 drivers/bluetooth/hci_vhci.c:488 #1: ffff80008ade9de0 (uevent_sock_mutex){+.+.}-{4:4}, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline] #1: ffff80008ade9de0 (uevent_sock_mutex){+.+.}-{4:4}, at: kobject_uevent_net_broadcast+0x24c/0x53c lib/kobject_uevent.c:410 #2: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #2: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffff800089981820 (rcu_read_lock){....}-{1:3}, at: sock_def_readable+0xdc/0x5d0 net/core/sock.c:3665 =============================================