INFO: task kworker/1:5:5159 blocked for more than 143 seconds. Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:5 state:D stack:24896 pid:5159 tgid:5159 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 usb_kill_urb.part.0+0x1c6/0x250 drivers/usb/core/urb.c:713 usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:702 usb_start_wait_urb+0x251/0x4c0 drivers/usb/core/message.c:65 usb_internal_control_msg drivers/usb/core/message.c:103 [inline] usb_control_msg+0x327/0x4a0 drivers/usb/core/message.c:154 get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 drivers/usb/core/hub.c:4750 hub_port_init+0x68c/0x39e0 drivers/usb/core/hub.c:4946 hub_port_connect drivers/usb/core/hub.c:5394 [inline] hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] port_event drivers/usb/core/hub.c:5765 [inline] hub_event+0x2b61/0x4e10 drivers/usb/core/hub.c:5847 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 INFO: task kworker/0:9:5164 blocked for more than 143 seconds. Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:9 state:D stack:25856 pid:5164 tgid:5164 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 usb_kill_urb.part.0+0x1c6/0x250 drivers/usb/core/urb.c:713 usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:702 usb_start_wait_urb+0x251/0x4c0 drivers/usb/core/message.c:65 usb_internal_control_msg drivers/usb/core/message.c:103 [inline] usb_control_msg+0x327/0x4a0 drivers/usb/core/message.c:154 get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 drivers/usb/core/hub.c:4750 hub_port_init+0x68c/0x39e0 drivers/usb/core/hub.c:4946 hub_port_connect drivers/usb/core/hub.c:5394 [inline] hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] port_event drivers/usb/core/hub.c:5765 [inline] hub_event+0x2b61/0x4e10 drivers/usb/core/hub.c:5847 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Showing all locks held in the system: 2 locks held by kworker/u4:1/12: #0: ffff888013089938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90000117d80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 1 lock held by khungtaskd/29: #0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 2 locks held by getty/4814: #0: ffff88802a59f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201 1 lock held by syz-executor.2/5110: #0: ffff888029758e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x18d/0x7d0 net/ipv4/netfilter/ip_tables.c:961 2 locks held by syz-executor.5/5111: #0: ffff888029758e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x18d/0x7d0 net/ipv4/netfilter/ip_tables.c:961 #1: ffff88807ef3e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline] #1: ffff88807ef3e0a0 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:636 [inline] #1: ffff88807ef3e0a0 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1685 [inline] #1: ffff88807ef3e0a0 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm kernel/fork.c:1734 [inline] #1: ffff88807ef3e0a0 (&mm->mmap_lock){++++}-{3:3}, at: copy_process+0x42e5/0x97b0 kernel/fork.c:2496 5 locks held by kworker/1:5/5159: #0: ffff88801628d138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90004fd7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff8880231f8190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff8880231f8190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5793 #3: ffff8880231fb510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3151 [inline] #3: ffff8880231fb510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5362 [inline] #3: ffff8880231fb510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] #3: ffff8880231fb510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline] #3: ffff8880231fb510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x27fe/0x4e10 drivers/usb/core/hub.c:5847 #4: ffff88801d6d46c8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5363 [inline] #4: ffff88801d6d46c8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] #4: ffff88801d6d46c8 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline] #4: ffff88801d6d46c8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2827/0x4e10 drivers/usb/core/hub.c:5847 5 locks held by kworker/0:9/5164: #0: ffff88801628d138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90005087d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff888022e8e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff888022e8e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5793 #3: ffff888022faa510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3151 [inline] #3: ffff888022faa510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5362 [inline] #3: ffff888022faa510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] #3: ffff888022faa510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline] #3: ffff888022faa510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x27fe/0x4e10 drivers/usb/core/hub.c:5847 #4: ffff888022ec4d28 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5363 [inline] #4: ffff888022ec4d28 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] #4: ffff888022ec4d28 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline] #4: ffff888022ec4d28 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2827/0x4e10 drivers/usb/core/hub.c:5847 2 locks held by kworker/u4:12/13330: 2 locks held by kworker/u4:18/14810: #0: ffff888013089938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90015bbfd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 5 locks held by syz-executor.5/5993: #0: ffff88802e005248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1191 #1: ffff88805409c420 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:643 #2: ffff88802436b088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27d/0x500 fs/kernfs/file.c:325 #3: ffff8880172c53e8 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a0/0x500 fs/kernfs/file.c:326 #4: ffffffff8d0737e8 (system_transition_mutex){+.+.}-{3:3}, at: software_resume+0x63/0x2f0 kernel/power/hibernate.c:953 5 locks held by syz-executor.0/6008: #0: ffff88802245b4c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1191 #1: ffff88805409c420 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:643 #2: ffff8880228aa488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27d/0x500 fs/kernfs/file.c:325 #3: ffff8880172c53e8 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a0/0x500 fs/kernfs/file.c:326 #4: ffffffff8d0737e8 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x89/0xa0 kernel/power/main.c:56 1 lock held by syz-executor.0/6012: #0: ffff88802245b4c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1191 5 locks held by syz-executor.4/6011: #0: ffff88801c6254c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1191 #1: ffff88805409c420 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:643 #2: ffff8880228aa088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27d/0x500 fs/kernfs/file.c:325 #3: ffff8880172c53e8 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a0/0x500 fs/kernfs/file.c:326 #4: ffffffff8d0737e8 (system_transition_mutex){+.+.}-{3:3}, at: software_resume+0x63/0x2f0 kernel/power/hibernate.c:953 2 locks held by syz-executor.4/6019: #0: ffff888015edae08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff8880228aa088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x230 fs/kernfs/file.c:154 5 locks held by syz-executor.3/6016: #0: ffff888016b2f248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1191 #1: ffff88805409c420 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:643 #2: ffff888078aa5088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27d/0x500 fs/kernfs/file.c:325 #3: ffff8880172c53e8 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a0/0x500 fs/kernfs/file.c:326 #4: ffffffff8d0737e8 (system_transition_mutex){+.+.}-{3:3}, at: software_resume+0x63/0x2f0 kernel/power/hibernate.c:953 2 locks held by syz-executor.3/6018: #0: ffff88802ba5be08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff888078aa5088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x230 fs/kernfs/file.c:154 1 lock held by modprobe/6027: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf87/0x1210 kernel/hung_task.c:379 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5113 Comm: syz-executor.4 Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:sysret32_from_system_call+0x23/0x4b Code: 89 e7 e8 92 39 ed ff 84 c0 0f 84 2a fa ff ff 66 90 b9 48 00 00 00 65 48 8b 14 25 60 7b 02 00 83 e2 fe 89 d0 48 c1 ea 20 0f 30 <48> 8b 5c 24 28 48 8b 6c 24 20 4c 8b 9c 24 90 00 00 00 48 8b 8c 24 RSP: 0018:ffffc90004c9ff58 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000048 RDX: 0000000000000000 RSI: ffffffff8accae80 RDI: ffffffff8b2fcb40 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8f3ae197 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:0000000058163400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007fd6ff3fc19c CR3: 0000000044dc1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: