INFO: task kworker/R-wg-cr:5135 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/R-wg-cr state:D stack:27280 pid:5135 tgid:5135 ppid:2 flags:0x00004000 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 worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 rescuer_thread+0x3c9/0xda0 kernel/workqueue.c:3489 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/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:7635 blocked for more than 144 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/R-wg-cr state:D stack:27088 pid:7635 tgid:7635 ppid:2 flags:0x00004000 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 worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 rescuer_thread+0x3c9/0xda0 kernel/workqueue.c:3489 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/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:9293 blocked for more than 145 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/R-wg-cr state:D stack:27088 pid:9293 tgid:9293 ppid:2 flags:0x00004000 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 worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 rescuer_thread+0x3c9/0xda0 kernel/workqueue.c:3489 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/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:9295 blocked for more than 146 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/R-wg-cr state:D stack:27088 pid:9295 tgid:9295 ppid:2 flags:0x00004000 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 worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 rescuer_thread+0x3c9/0xda0 kernel/workqueue.c:3489 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task kworker/1:8:9918 blocked for more than 148 seconds. Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:8 state:D stack:30000 pid:9918 tgid:9918 ppid:2 flags:0x00004000 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 kthread+0x23b/0x390 kernel/kthread.c:382 ret_from_fork+0x4d/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: 4 locks held by kworker/u8:0/11: #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: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90000107d00 (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: ffff888061b75408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249 1 lock held by kworker/R-mm_pe/13: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3} , at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 3 locks held by kworker/1:0/25: 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/u8:2/35: #0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3223 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90000ab7d00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90000ab7d00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3} , at: idle_cull_fn+0xd5/0x540 kernel/workqueue.c:2972 3 locks held by kworker/1:1/45: 3 locks held by kworker/u8:4/62: #0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3223 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc900015d7d00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: idle_cull_fn+0xd5/0x540 kernel/workqueue.c:2972 3 locks held by kworker/u8:5/153: #0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90002e2fd00 ( (work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] (work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: idle_cull_fn+0xd5/0x540 kernel/workqueue.c:2972 3 locks held by kworker/1:2/926: 2 locks held by getty/4845: #0: ffff88802af750a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3} , at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 1 lock held by kworker/R-wg-cr/5135: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/R-wg-cr/5147: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/5149: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 2 locks held by kworker/1:3/5154: 2 locks held by kworker/1:4/5159: 1 lock held by kworker/1:5/5177: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 3 locks held by kworker/1:6/5178: 7 locks held by kworker/1:7/5179: 1 lock held by kworker/R-wg-cr/7089: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/7092: 1 lock held by kworker/R-wg-cr/7105: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/7627: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/7635: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/R-wg-cr/7636: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 5 locks held by kworker/u8:11/8359: 1 lock held by kworker/R-wg-cr/8426: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8429: #0: ffffffff8e1deb68 ( wq_pool_attach_mutex ){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8752: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3} , at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8753: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/8756: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/9293: #0: ffffffff8e1deb68 (wq_pool_attach_mutex ){+.+.}-{3:3} , at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/R-wg-cr/9294: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2729 1 lock held by kworker/R-wg-cr/9295: #0: ffffffff8e1deb68 (wq_pool_attach_mutex ){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/R-bond0/9942: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3} , at: set_pf_worker kernel/workqueue.c:3335 [inline] , at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 7 locks held by syz-executor/9958: #0: ffff88802f384420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline] #0: ffff88802f384420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888068ed7888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff8880231b2b48 (kn->active#49 ){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8eef44e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 #4: ffff8880602b10e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff8880602b10e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline] #4: ffff8880602b10e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1290 #5: ffff88805e376250 (&devlink->lock_key#14){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672 #6: ffffffff8f5e6ec8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773 4 locks held by syz-executor/9963: #0: ffff88802f384420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline] #0: ffff88802f384420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888064119488 ( &of->mutex ){+.+.}-{3:3} , at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff8880231b2b48 (kn->active#49 ){.+.+}-{0:0} , at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8eef44e8 ( nsim_bus_dev_list_lock ){+.+.}-{3:3} , at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 1 lock held by kworker/R-bond0/9965: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3335 [inline] #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 1 lock held by kworker/R-wg-cr/9968: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3335 [inline] #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 1 lock held by kworker/R-bond0/9975: #0: ffffffff8e1deb68 (wq_pool_attach_mutex ){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3335 [inline] ){+.+.}-{3:3}, at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 1 lock held by kworker/R-bond0/9976: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3335 [inline] ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 4 locks held by syz-executor/9978: #0: ffff88802f384420 (sb_writers#8){.+.+}-{0:0} , at: file_start_write include/linux/fs.h:2854 [inline] , at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888056843888 (&of->mutex){+.+.}-{3:3} , at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff8880231b2b48 ( kn->active #49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8eef44e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 1 lock held by kworker/R-bond0/9979: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3335 [inline] #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 1 lock held by kworker/R-bond0/9981: #0: ffffffff8e1deb68 ( wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3335 [inline] wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0xda0 kernel/workqueue.c:3461 1 lock held by kworker/R-bond0/9982: #0: