INFO: task kworker/R-wg-cr:6152 blocked for more than 143 seconds. Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/R-wg-cr state:D stack:25688 pid:6152 tgid:6152 ppid:2 flags:0x00004000 Workqueue: 0x0 (wg-crypt-wg1) Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2671 rescuer_thread+0x3ed/0x10a0 kernel/workqueue.c:3470 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 INFO: task kworker/R-wg-cr:6171 blocked for more than 144 seconds. Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/R-wg-cr state:D stack:24792 pid:6171 tgid:6171 ppid:2 flags:0x00004000 Workqueue: 0x0 (wg-crypt-wg0) Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 worker_detach_from_pool kernel/workqueue.c:2730 [inline] rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3525 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 Showing all locks held in the system: 1 lock held by kworker/R-mm_pe/13: #0: ffffffff8e7e2c08 ( wq_pool_attach_mutex ){+.+.}-{3:3} , at: worker_detach_from_pool kernel/workqueue.c:2730 [inline] , at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3525 1 lock held by khungtaskd/30: #0: ffffffff8e938320 (rcu_read_lock){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] , at: rcu_read_lock include/linux/rcupdate.h:838 [inline] , at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626 2 locks held by kworker/1:1/46: 3 locks held by kworker/0:2/943: #0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90003f37d00 ( deferred_process_work ){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] ){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3} , at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 3 locks held by kworker/u8:7/1120: #0: ffff88802acc5148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88802acc5148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90004597d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90004597d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fc84648 (rtnl_mutex ){+.+.}-{3:3} , at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4734 1 lock held by dhcpcd/4897: #0: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 2 locks held by getty/4985: #0: ffff88802b7990a0 (&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+0x6ac/0x1e00 drivers/tty/n_tty.c:2211 5 locks held by kworker/1:5/5285: 3 locks held by kworker/u8:14/5546: 3 locks held by kworker/u8:18/5555: #0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90004d1fd00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3207 [inline] , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: idle_cull_fn+0xd5/0x760 kernel/workqueue.c:2953 2 locks held by kworker/u8:1/11075: 2 locks held by kworker/1:7/20639: 1 lock held by kworker/u8:2/21980: #0: ffffffff8e7e2c08 ( wq_pool_attach_mutex ){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2671 4 locks held by kworker/u8:4/21987: #0: ffff8880166e5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ffff8880166e5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90004607d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90004607d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffff888041019428 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249 2 locks held by kworker/1:3/26355: 1 lock held by kworker/1:2/700: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2671 3 locks held by kworker/u8:0/4175: #0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900096efd00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3207 [inline] , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: idle_cull_fn+0xd5/0x760 kernel/workqueue.c:2953 1 lock held by kworker/R-wg-cr/6032: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2671 1 lock held by kworker/R-wg-cr/6051: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3} , at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2671 1 lock held by kworker/R-wg-cr/6115: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xfbf/0x10a0 kernel/workqueue.c:3534 1 lock held by kworker/R-wg-cr/6151: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline] (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3525 1 lock held by kworker/R-wg-cr/6152: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2671 6 locks held by kworker/R-wg-cr/6153: 1 lock held by kworker/R-wg-cr/6171: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3} , at: worker_detach_from_pool kernel/workqueue.c:2730 [inline] , at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3525 3 locks held by kworker/1:4/6266: 3 locks held by kworker/u8:6/6497: #0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000390fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc9000390fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 1 lock held by kworker/R-bond0/6562: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-bond0/6576: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-bond0/6578: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6589: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6592: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-bond0/6594: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6595: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-bond0/6598: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3} , at: set_pf_worker kernel/workqueue.c:3318 [inline] , at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6605: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6619: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6623: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex ){+.+.}-{3:3} , at: set_pf_worker kernel/workqueue.c:3318 [inline] , at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6625: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6626: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6627: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6628: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 8 locks held by syz-executor/6632: #0: ffff888069ca6420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2881 [inline] #0: ffff888069ca6420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888055feac88 (&of->mutex){+.+.}-{3:3} , at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff8880230c20f8 (kn->active#50){.+.+}-{0:0} , at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8f520ce8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 #4: ffff88807c4550e8 (&dev->mutex){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: __device_driver_lock drivers/base/dd.c:1094 [inline] , at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1292 #5: ffff88807c451250 (&devlink->lock_key#227 ){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672 #6: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773 #7: ffffffff8e93d6f8 (rcu_state.exp_mutex){+.+.}-{3:3} , at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] , at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958 1 lock held by kworker/R-bond0/6664: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 4 locks held by syz-executor/6669: #0: ffff888069ca6420 (sb_writers#8){.+.+}-{0:0} , at: file_start_write include/linux/fs.h:2881 [inline] , at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff8880187b8c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff8880230c20f8 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8f520ce8 (nsim_bus_dev_list_lock ){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 1 lock held by syz-executor/6685: #0: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 1 lock held by kworker/R-wg-cr/6687: #0: ffffffff8e7e2c08 ( wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6689: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6692: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-bond0/6702: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex ){+.+.}-{3:3} , at: set_pf_worker kernel/workqueue.c:3318 [inline] , at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-bond0/6716: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6722: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3} , at: set_pf_worker kernel/workqueue.c:3318 [inline] , at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6723: #0: ffffffff8e7e2c08 ( wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6725: #0: ffffffff8e7e2c08 ( wq_pool_attach_mutex ){+.+.}-{3:3} , at: set_pf_worker kernel/workqueue.c:3318 [inline] , at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6735: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6736: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by kworker/R-wg-cr/6739: #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3318 [inline] #0: ffffffff8e7e2c08 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3442 1 lock held by syz-executor/6792: #0: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 2 locks held by syz-executor/6795: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: wg_netns_pre_exit+0x1f/0x1e0 drivers/net/wireguard/device.c:414 2 locks held by syz-executor/6845: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872 2 locks held by syz-executor/6850: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872 2 locks held by syz-executor/6854: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872 2 locks held by syz-executor/6859: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872 2 locks held by syz-executor/6863: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3} , at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872 2 locks held by syz-executor/6868: #0: ffffffff8fc77a90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fc84648 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 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+0xff4/0x1040 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 0 to CPUs 1: radio-si470x 2-1:0.0: non-zero urb status (-71) NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6051 Comm: kworker/R-wg-cr Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: wg-crypt-wg2 wg_packet_encrypt_worker RIP: 0010:delay_tsc+0x5c/0xe0 arch/x86/lib/delay.c:79 Code: 90 48 89 d5 48 c1 e5 20 48 09 c5 48 29 dd 4c 39 f5 73 67 bf 01 00 00 00 e8 c1 22 b0 f5 65 8b 05 02 f7 50 74 85 c0 74 2f f3 90 01 00 00 00 e8 0a 21 b0 f5 e8 e5 f7 03 00 41 39 c7 75 20 0f 01 RSP: 0018:ffffc90000a17878 EFLAGS: 00000082 RAX: 0000000080010104 RBX: 0000062b18ee0173 RCX: 0000000000010105 RDX: 000000000000062b RSI: ffffffff8c606d20 RDI: 0000000000000001 RBP: 00000000000005e7 R08: ffffffff853ef0aa R09: 1ffff11004020046 R10: dffffc0000000000 R11: ffffffff8bb2dfb0 R12: dffffc0000000000 R13: 000000000000267e R14: 0000000000000899 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe3a5e6a5e8 CR3: 000000000e734000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wait_for_lsr drivers/tty/serial/8250/8250_port.c:2074 [inline] serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline] serial8250_console_write+0x104e/0x1770 drivers/tty/serial/8250/8250_port.c:3393 console_emit_next_record kernel/printk/printk.c:2983 [inline] console_flush_all+0x865/0xfd0 kernel/printk/printk.c:3049 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118 vprintk_emit+0x5dc/0x7c0 kernel/printk/printk.c:2348 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4912 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4923 _dev_warn+0x122/0x170 drivers/base/core.c:4979 si470x_int_in_callback+0xba6/0x1590 drivers/media/radio/si470x/radio-si470x-usb.c:378 __usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45a0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __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+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 de f6 39 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 73 2c a2 f5 65 8b 05 b4 00 43 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000a189c0 EFLAGS: 00000206 RAX: 8ba95307f53bd800 RBX: 1ffff9200014313c RCX: ffffffff8170417a RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: 0000000000000001 RBP: ffffc90000a18a50 R08: ffffffff93733927 R09: 1ffffffff26e6724 R10: dffffc0000000000 R11: fffffbfff26e6725 R12: dffffc0000000000 R13: 1ffff92000143138 R14: ffffc90000a189e0 R15: 0000000000000246 __mod_timer+0xb89/0xeb0 kernel/time/timer.c:1186 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers kernel/time/timer.c:2417 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:raw_spin_rq_unlock_irq+0x19/0x90 kernel/sched/sched.h:1428 Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 48 89 fb 66 90 48 89 df e8 de a7 5b 0a e8 89 c2 35 00 fb 5b <41> 5e 41 5f c3 cc cc cc cc f3 0f 1e fa 49 bf 00 00 00 00 00 fc ff RSP: 0018:ffffc90004b2f1e8 EFLAGS: 00000282 RAX: 8ba95307f53bd800 RBX: ffff8880b933e9c0 RCX: ffffffff8170417a RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c606d40 RBP: ffffc90004b2f3f0 R08: ffffffff93733937 R09: 1ffffffff26e6726 R10: dffffc0000000000 R11: fffffbfff26e6727 R12: ffffc90004b2f370 R13: 0000000000000000 R14: ffff88801fbc4370 R15: ffff88801fbc3c00 __schedule+0x1a3a/0x4a60 kernel/sched/core.c:6533 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __local_bh_enable_ip+0x179/0x200 kernel/softirq.c:389 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_encrypt_worker+0x1561/0x1610 drivers/net/wireguard/send.c:293 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 rescuer_thread+0x63f/0x10a0 kernel/workqueue.c:3486 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 radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71) radio-si470x 2-1:0.0: non-zero urb status (-71)