INFO: task syz-executor:31619 blocked for more than 153 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26736 pid:31619 tgid:31619 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ops_init+0x359/0x610 net/core/net_namespace.c:139 setup_net+0x515/0xca0 net/core/net_namespace.c:343 copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x619/0xc10 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 [inline] __se_sys_unshare kernel/fork.c:3392 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3392 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa98a177337 RSP: 002b:00007fa98a42ffa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007fa98a1e4be6 RCX: 00007fa98a177337 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 0000000000000000 R08: 00007fa98ae37d60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 INFO: task syz-executor:31645 blocked for more than 153 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:25264 pid:31645 tgid:31645 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ops_init+0x359/0x610 net/core/net_namespace.c:139 setup_net+0x515/0xca0 net/core/net_namespace.c:343 copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x619/0xc10 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 [inline] __se_sys_unshare kernel/fork.c:3392 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3392 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0615577337 RSP: 002b:00007f061582ffa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f06155e4be6 RCX: 00007f0615577337 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 0000000000000000 R08: 00007f0616237d60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 INFO: task syz-executor:31647 blocked for more than 153 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26784 pid:31647 tgid:31647 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ops_init+0x359/0x610 net/core/net_namespace.c:139 setup_net+0x515/0xca0 net/core/net_namespace.c:343 copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x619/0xc10 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 [inline] __se_sys_unshare kernel/fork.c:3392 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3392 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f51bcf77337 RSP: 002b:00007f51bd22ffa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f51bcfe4be6 RCX: 00007f51bcf77337 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 0000000000000000 R08: 00007f51bdc37d60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 INFO: task syz-executor:31648 blocked for more than 154 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26048 pid:31648 tgid:31648 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ops_init+0x359/0x610 net/core/net_namespace.c:139 setup_net+0x515/0xca0 net/core/net_namespace.c:343 copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x619/0xc10 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 [inline] __se_sys_unshare kernel/fork.c:3392 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3392 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6b68977337 RSP: 002b:00007f6b68c2ffa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f6b689e4be6 RCX: 00007f6b68977337 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 0000000000000000 R08: 00007f6b69637d60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: 5 locks held by kworker/u8:1/12: 1 lock held by khungtaskd/30: #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 3 locks held by kworker/1:2/57: 3 locks held by kworker/1:3/931: 2 locks held by udevd/4545: 2 locks held by getty/4844: #0: ffff88802a6dc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 4 locks held by kworker/u9:5/5098: #0: ffff8880680ee948 ((wq_completion)hci13#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff8880680ee948 ((wq_completion)hci13#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc900037cfd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc900037cfd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff88806b800078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x97/0xaf0 net/bluetooth/hci_event.c:3687 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline] #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x4c3/0xaf0 net/bluetooth/hci_event.c:3721 4 locks held by kworker/u9:1/16561: #0: ffff8880293ca148 ((wq_completion)hci6#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff8880293ca148 ((wq_completion)hci6#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000351fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000351fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff8880659d0078 (&hdev->lock){+.+.}-{3:3}, at: le_conn_complete_evt+0xb3/0x12e0 net/bluetooth/hci_event.c:5620 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm+0x24/0x150 include/net/bluetooth/hci_core.h:1967 4 locks held by kworker/u9:2/22495: 3 locks held by kworker/u8:0/23985: #0: ffff88802944e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff88802944e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc900037ffd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc900037ffd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193 3 locks held by kworker/1:4/28098: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000368fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000368fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 3 locks held by kworker/1:8/29085: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90004b77d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90004b77d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 4 locks held by kworker/u9:3/29849: #0: ffff888060f3d948 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888060f3d948 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90003837d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90003837d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff888065308078 (&hdev->lock){+.+.}-{3:3}, at: le_conn_complete_evt+0xb3/0x12e0 net/bluetooth/hci_event.c:5620 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm+0x24/0x150 include/net/bluetooth/hci_core.h:1967 6 locks held by kworker/u8:9/30778: #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000495fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000495fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffff88801c3cd0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #3: ffff88801c3cd0e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff88801c3cd0e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506 #4: ffff88802d27f250 (&devlink->lock_key#137){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff88802d27f250 (&devlink->lock_key#137){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff88802d27f250 (&devlink->lock_key#137){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506 #5: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773 3 locks held by syz-executor/30888: #0: ffff8880656b8d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:510 [inline] #0: ffff8880656b8d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2728 #1: ffff8880656b8078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x494/0xf60 net/bluetooth/hci_sync.c:5063 #2: ffff888015ed6948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_remove_by_name_ns+0x7a/0x160 fs/kernfs/dir.c:1689 2 locks held by syz-executor/31089: #0: ffff888022014d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:510 [inline] #0: ffff888022014d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2728 #1: ffff888022014078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x494/0xf60 net/bluetooth/hci_sync.c:5063 3 locks held by syz-executor/31380: 1 lock held by syz.4.6987/31590: #0: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 2 locks held by syz-executor/31610: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: wg_netns_pre_exit+0x1f/0x1e0 drivers/net/wireguard/device.c:414 2 locks held by syz-executor/31619: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31620: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: wg_netns_pre_exit+0x1f/0x1e0 drivers/net/wireguard/device.c:414 4 locks held by kworker/u9:4/31632: #0: ffff88807d547948 ((wq_completion)hci11#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff88807d547948 ((wq_completion)hci11#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000359fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000359fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff88801e110078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x97/0xaf0 net/bluetooth/hci_event.c:3687 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline] #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x4c3/0xaf0 net/bluetooth/hci_event.c:3721 4 locks held by kworker/u9:6/31636: #0: ffff888063392948 ((wq_completion)hci1#4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888063392948 ((wq_completion)hci1#4){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90003aefd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90003aefd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff888028d4c078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x97/0xaf0 net/bluetooth/hci_event.c:3687 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline] #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x4c3/0xaf0 net/bluetooth/hci_event.c:3721 2 locks held by syz-executor/31645: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31647: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31648: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 4 locks held by kworker/u9:7/31659: #0: ffff888027089148 ((wq_completion)hci12#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888027089148 ((wq_completion)hci12#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000337fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000337fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff88807c744078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x97/0xaf0 net/bluetooth/hci_event.c:3687 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline] #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x4c3/0xaf0 net/bluetooth/hci_event.c:3721 4 locks held by kworker/u9:8/31673: #0: ffff8880687a5148 ((wq_completion)hci10#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff8880687a5148 ((wq_completion)hci10#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc900043f7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc900043f7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffff888078abc078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x97/0xaf0 net/bluetooth/hci_event.c:3687 #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline] #3: ffffffff8f7515c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x4c3/0xaf0 net/bluetooth/hci_event.c:3721 1 lock held by udevd/31679: #0: ffff888015ed6948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1159 1 lock held by udevd/31684: #0: ffff888015ed6948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1159 1 lock held by udevd/31686: #0: ffff888015ed6948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1159 1 lock held by udevd/31688: #0: ffff888015ed6948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_dop_revalidate+0xd4/0x560 fs/kernfs/dir.c:1159 2 locks held by syz-executor/31700: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31705: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31707: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31708: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/31713: #0: ffffffff8f5da690 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 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:223 [inline] watchdog+0xfde/0x1020 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4545 Comm: udevd Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:mark_lock+0xa/0x350 kernel/locking/lockdep.c:4639 Code: 13 0a 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 55 41 54 53 <48> 83 ec 10 49 89 f7 48 89 3c 24 49 bd 00 00 00 00 00 fc ff df 83 RSP: 0018:ffffc900000079f8 EFLAGS: 00000006 RAX: 00000000000c4b87 RBX: 0000000000094b02 RCX: 0000000000000000 RDX: 0000000000000008 RSI: ffff88807aae4730 RDI: ffff88807aae3c00 RBP: ffff88807aae4730 R08: ffffffff92fa76f7 R09: 1ffffffff25f4ede R10: dffffc0000000000 R11: fffffbfff25f4edf R12: 0000000000000001 R13: ffff88807aae3c00 R14: 1ffff1100f55c8ea R15: ffff88807aae4750 FS: 00007f27a2c92c80(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffecc688198 CR3: 000000007a6a8000 CR4: 00000000003526f0 Call Trace: mark_usage kernel/locking/lockdep.c:4599 [inline] __lock_acquire+0xc0a/0x1fd0 kernel/locking/lockdep.c:5091 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] advance_sched+0xab/0xca0 net/sched/sch_taprio.c:924 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:99 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline] RIP: 0010:unwind_next_frame+0x52c/0x2a00 arch/x86/kernel/unwind_orc.c:494 Code: 48 01 dd 48 89 ef 4c 89 f6 e8 10 35 55 00 48 8d 43 04 4c 39 f5 4c 0f 46 e8 48 8d 43 fc 4c 0f 47 e0 4c 0f 46 fb 4d 39 e5 77 1d 8f 32 55 00 eb 96 89 d9 80 e1 07 80 c1 03 38 c1 7c c0 48 89 df RSP: 0018:ffffc900030ff2a8 EFLAGS: 00000246 RAX: ffffffff9028d5e0 RBX: ffffffff9028d5e4 RCX: ffff88807aae3c00 RDX: 0000000000000000 RSI: ffffffff8ba0012f RDI: ffffffff8ba00154 RBP: ffffffff8ba00154 R08: ffffffff8140f500 R09: ffffc900030ff470 R10: 0000000000000003 R11: ffffffff8181dd90 R12: ffffffff9028d5e0 R13: ffffffff9028d5e0 R14: ffffffff8ba0012f R15: ffffffff9028d5e0 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3940 [inline] slab_alloc_node mm/slub.c:4002 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4009 lsm_inode_alloc security/security.c:670 [inline] security_inode_alloc+0x28/0x120 security/security.c:1587 inode_init_always+0x947/0xc70 fs/inode.c:232 alloc_inode fs/inode.c:268 [inline] iget_locked+0x22b/0x850 fs/inode.c:1280 kernfs_get_inode+0x50/0x760 fs/kernfs/inode.c:251 kernfs_iop_lookup+0x266/0x390 fs/kernfs/dir.c:1214 lookup_open fs/namei.c:3483 [inline] open_last_lookups fs/namei.c:3574 [inline] path_openat+0x11c0/0x35f0 fs/namei.c:3810 do_filp_open+0x235/0x490 fs/namei.c:3840 do_sys_openat2+0x13e/0x1d0 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1439 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f27a2d689a4 Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffecc68c0a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f27a2d689a4 RDX: 0000000000080000 RSI: 00007ffecc68c1d8 RDI: 00000000ffffff9c RBP: 00007ffecc68c1d8 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 0000560aeae08b42 R14: 0000000000000001 R15: 0000000000000000