INFO: task kworker/1:4:3667 blocked for more than 143 seconds. Not tainted 5.17.0-rc4-syzkaller-00217-g7993e65fdd0f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:21880 pid: 3667 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4987 [inline] __schedule+0xa94/0x4910 kernel/sched/core.c:6296 schedule+0xd2/0x260 kernel/sched/core.c:6369 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 hub_port_connect drivers/usb/core/hub.c:5255 [inline] hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] port_event drivers/usb/core/hub.c:5660 [inline] hub_event+0x1fe3/0x44d0 drivers/usb/core/hub.c:5742 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 5 locks held by kworker/0:0/5: #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278 #1: ffffc90000ca7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282 #2: ffff888147ed0220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff888147ed0220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688 #3: ffff888147ed2580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline] #3: ffff888147ed2580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5254 [inline] #3: ffff888147ed2580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] #3: ffff888147ed2580 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5660 [inline] #3: ffff888147ed2580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1fba/0x44d0 drivers/usb/core/hub.c:5742 #4: ffff88801d7d0b68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5255 [inline] #4: ffff88801d7d0b68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] #4: ffff88801d7d0b68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5660 [inline] #4: ffff88801d7d0b68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1fe3/0x44d0 drivers/usb/core/hub.c:5742 1 lock held by khungtaskd/27: #0: ffffffff8bb84360 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 2 locks held by getty/3272: #0: ffff88814b899098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075 5 locks held by kworker/1:4/3667: #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278 #1: ffffc90002bdfdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282 #2: ffff888147fa5220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff888147fa5220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688 #3: ffff888147ff8580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline] #3: ffff888147ff8580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5254 [inline] #3: ffff888147ff8580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] #3: ffff888147ff8580 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5660 [inline] #3: ffff888147ff8580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1fba/0x44d0 drivers/usb/core/hub.c:5742 #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5255 [inline] #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5660 [inline] #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1fe3/0x44d0 drivers/usb/core/hub.c:5742 5 locks held by kworker/1:5/3671: #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888011da4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278 #1: ffffc90002c2fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282 #2: ffff88814800b220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88814800b220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688 #3: ffff88814800e580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline] #3: ffff88814800e580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5254 [inline] #3: ffff88814800e580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] #3: ffff88814800e580 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5660 [inline] #3: ffff88814800e580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1fba/0x44d0 drivers/usb/core/hub.c:5742 #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5255 [inline] #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5660 [inline] #4: ffff88801d7eef68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1fe3/0x44d0 drivers/usb/core/hub.c:5742 4 locks held by kworker/u4:10/6095: #0: ffff888010e3a938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010e3a938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010e3a938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010e3a938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888010e3a938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888010e3a938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278 #1: ffffc9000fc6fdb8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282 #2: ffffffff8d31b510 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:559 #3: ffffffff8bb8dfa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #3: ffffffff8bb8dfa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fa/0x620 kernel/rcu/tree_exp.h:840 3 locks held by kworker/0:22/24486: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278 #1: ffffc90003d47db8 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282 #2: ffffffff8bb8deb0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x430 kernel/rcu/tree.c:4026 2 locks held by kworker/0:23/24489: #0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278 #1: ffffc90003d77db8 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282 1 lock held by syz-executor.1/27148: #0: ffffffff8bb8dfa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #0: ffffffff8bb8dfa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:840 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc4-syzkaller-00217-g7993e65fdd0f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1009 Comm: kworker/u4:4 Not tainted 5.17.0-rc4-syzkaller-00217-g7993e65fdd0f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_purge_orig RIP: 0010:do_raw_spin_lock+0x1c4/0x2b0 kernel/locking/spinlock_debug.c:118 Code: ff df 4c 89 65 10 48 c7 04 03 00 00 00 00 48 8b 44 24 60 65 48 2b 04 25 28 00 00 00 0f 85 c7 00 00 00 48 83 c4 68 5b 5d 41 5c <41> 5d 41 5e c3 48 c7 c2 40 8c 9f 8b 89 44 24 28 48 b9 00 00 00 00 RSP: 0018:ffffc900048ffbe8 EFLAGS: 00000292 RAX: 0000000000000000 RBX: ffff8880463afb00 RCX: ffffffff815e1e30 RDX: 1ffff11008c75f62 RSI: 0000000000000004 RDI: ffffc900048ffb90 RBP: ffff8880461cdf60 R08: 0000000000000001 R09: 0000000000000003 R10: fffff5200091ff72 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880463afb10 R14: 0000000000000000 R15: 00000000000003ec FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9281cfc058 CR3: 000000000b88e000 CR4: 0000000000350ef0 Call Trace: spin_lock_bh include/linux/spinlock.h:354 [inline] batadv_purge_orig_ref+0x176/0x1550 net/batman-adv/originator.c:1243 batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1272 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: df 4c 89 65 fisttps 0x65(%rcx,%rcx,4) 4: 10 48 c7 adc %cl,-0x39(%rax) 7: 04 03 add $0x3,%al 9: 00 00 add %al,(%rax) b: 00 00 add %al,(%rax) d: 48 8b 44 24 60 mov 0x60(%rsp),%rax 12: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax 19: 00 00 1b: 0f 85 c7 00 00 00 jne 0xe8 21: 48 83 c4 68 add $0x68,%rsp 25: 5b pop %rbx 26: 5d pop %rbp 27: 41 5c pop %r12 * 29: 41 5d pop %r13 <-- trapping instruction 2b: 41 5e pop %r14 2d: c3 retq 2e: 48 c7 c2 40 8c 9f 8b mov $0xffffffff8b9f8c40,%rdx 35: 89 44 24 28 mov %eax,0x28(%rsp) 39: 48 rex.W 3a: b9 00 00 00 00 mov $0x0,%ecx