INFO: task kworker/1:2:48 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-00119-gb72749301112 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:22416 pid:48 tgid:48 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0xcda/0x31b0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline] __down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306 kernfs_activate fs/kernfs/dir.c:1403 [inline] kernfs_add_one+0x39d/0x520 fs/kernfs/dir.c:819 __kernfs_create_file+0x295/0x350 fs/kernfs/file.c:1063 sysfs_add_file_mode_ns+0x1ff/0x3b0 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:76 [inline] internal_create_group+0x565/0xe50 fs/sysfs/group.c:180 internal_create_groups+0x9d/0x150 fs/sysfs/group.c:220 device_add_groups drivers/base/core.c:2826 [inline] device_add_attrs drivers/base/core.c:2901 [inline] device_add+0x781/0x1a70 drivers/base/core.c:3633 usb_create_ep_devs+0x160/0x2b0 drivers/usb/core/endpoint.c:169 create_intf_ep_devs.isra.0+0x161/0x200 drivers/usb/core/message.c:1252 usb_set_configuration+0x10ed/0x1c50 drivers/usb/core/message.c:2216 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:656 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3679 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248 process_scheduled_works kernel/workqueue.c:3329 [inline] worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task syz-executor:31652 blocked for more than 144 seconds. Not tainted 6.10.0-rc6-syzkaller-00119-gb72749301112 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:24304 pid:31652 tgid:31652 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0xcda/0x31b0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1528 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159 d_revalidate fs/namei.c:861 [inline] d_revalidate fs/namei.c:858 [inline] lookup_fast+0x239/0x540 fs/namei.c:1653 walk_component+0x5b/0x5b0 fs/namei.c:2000 link_path_walk.part.0.constprop.0+0x77f/0xcd0 fs/namei.c:2331 link_path_walk fs/namei.c:2256 [inline] path_openat+0x22f/0x29f0 fs/namei.c:3803 do_filp_open+0x1dc/0x430 fs/namei.c:3834 do_sys_openat2+0x17a/0x1e0 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_sys_openat fs/open.c:1436 [inline] __se_sys_openat fs/open.c:1431 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1431 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9f571b04d1 RSP: 002b:00007ffe6367d930 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000055 RCX: 00007f9f571b04d1 RDX: 0000000000090800 RSI: 00007f9f5721e9f8 RDI: 00000000ffffff9c RBP: 00007ffe6367d9ec R08: 000000000002466a R09: 00007f9f57315080 R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffe6367da60 R13: 0000000000000000 R14: 00000000000bb1e5 R15: 00000000000bb1e5 INFO: task udevd:3123 blocked for more than 145 seconds. Not tainted 6.10.0-rc6-syzkaller-00119-gb72749301112 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:27696 pid:3123 tgid:3123 ppid:2403 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0xcda/0x31b0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xe7/0x350 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+0x5b8/0x9c0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1009 [inline] uevent_show+0x188/0x3b0 drivers/base/core.c:2743 dev_attr_show+0x53/0xe0 drivers/base/core.c:2437 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59 seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230 kernfs_fop_read_iter+0x41a/0x590 fs/kernfs/file.c:279 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x869/0xbd0 fs/read_write.c:476 ksys_read+0x12f/0x260 fs/read_write.c:619 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7521755b6a RSP: 002b:00007ffe289434e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000055f668b1c550 RCX: 00007f7521755b6a RDX: 0000000000001000 RSI: 000055f668b24500 RDI: 0000000000000008 RBP: 000055f668b1c550 R08: 0000000000000008 R09: 0000000000000000 R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000003fff R14: 00007ffe289439c8 R15: 000000000000000a Showing all locks held in the system: 2 locks held by kworker/0:1/9: #0: ffff888100080948 ((wq_completion)events ){+.+.}-{0:0} , at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223 #1: ffffc9000009fd80 (free_ipc_work ){+.+.}-{0:0} , at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224 1 lock held by khungtaskd/30: #0: ffffffff886b4360 ( rcu_read_lock){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] , at: rcu_read_lock include/linux/rcupdate.h:781 [inline] , at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 5 locks held by kworker/1:2/48: #0: ffff8881052f4548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223 #1: ffffc90000337d80 ( (work_completion)(&hub->events) ){+.+.}-{0:0} , at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224 #2: ffff888109772190 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849 #3: ffff8881186de190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003 #4: ffff888100aae948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_activate fs/kernfs/dir.c:1403 [inline] #4: ffff888100aae948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_add_one+0x39d/0x520 fs/kernfs/dir.c:819 3 locks held by kworker/u8:5/275: #0: ffff888100aad948 ( (wq_completion)netns){+.+.}-{0:0} , at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223 #1: ffffc9000177fd80 ( net_cleanup_work ){+.+.}-{0:0} , at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224 #2: ffffffff8983c050 ( pernet_ops_rwsem ){++++}-{3:3} , at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594 6 locks held by kworker/0:2/2233: #0: ffff8881052f4548 ( (wq_completion)usb_hub_wq ){+.+.}-{0:0} , at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223 #1: ffffc90003c8fd80 ( (work_completion)(&hub->events)){+.+.}-{0:0} , at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224 #2: ffff88810979b190 ( &dev->mutex){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849 #3: ffff88812b12e190 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295 #4: ffff888106792160 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: __device_driver_lock drivers/base/dd.c:1093 [inline] , at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1290 #5: ffffffff892f2f28 ( input_mutex){+.+.}-{3:3} , at: __input_unregister_device+0x136/0x450 drivers/input/input.c:2293 2 locks held by getty/2461: #0: ffff88810ef640a0 ( &tty->ldisc_sem ){++++}-{0:0} , at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900000432f0 (&ldata->atomic_read_lock ){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211 5 locks held by kworker/1:3/4802: 6 locks held by kworker/1:4/4806: 5 locks held by kworker/1:0/21820: 1 lock held by syz-executor/31652: 1 lock held by udevd/1410: 4 locks held by udevd/1969: #0: ffff88812cb03790 ( &p->lock){+.+.}-{3:3} , at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182 #1: ffff88812b276488 ( &of->mutex#2 ){+.+.}-{3:3} , at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154 #2: ffff8881321f8698 ( kn->active #18 ){++++}-{0:0} , at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155 #3: ffff8881224bd190 ( &dev->mutex ){....}-{3:3} , at: device_lock_interruptible include/linux/device.h:1014 [inline] , at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 1 lock held by syz-executor/1992: 4 locks held by udevd/3123: #0: ffff88811ad85540 ( &p->lock ){+.+.}-{3:3} , at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182 #1: ffff888107b57088 ( &of->mutex #2){+.+.}-{3:3} , at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154 #2: ffff8881127b7b48 (kn->active #3 ){++++}-{0:0} , at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155 #3: ffff8881186de190 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743 1 lock held by syz.0.544/3211: 1 lock held by syz-executor/3212: 1 lock held by udevd/3218: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00119-gb72749301112 #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+0x116/0x1f0 lib/dump_stack.c:114 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1240 kernel/hung_task.c:379 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 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: yealink 1-1:36.0: urb_ctl_callback - urb status -71 NMI backtrace for cpu 1 CPU: 1 PID: 31652 Comm: syz-executor Not tainted 6.10.0-rc6-syzkaller-00119-gb72749301112 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407 Code: 14 b7 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 08 90 0b ff eb a2 e8 91 90 RSP: 0018:ffffc900001b85c8 EFLAGS: 00000006 RAX: dffffc0000000005 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: ffffffff829c30f0 RDI: ffffffff8d72f9e0 RBP: ffffffff8d72f9a0 R08: 0000000000000001 R09: 000000000000001f R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000000 R13: ffffffff8d72f9a0 R14: ffffffff8d72f9f0 R15: 000000000000003f FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe28945d68 CR3: 000000012ecb6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_in include/linux/serial_core.h:674 [inline] serial8250_console_write+0x17d/0x1090 drivers/tty/serial/8250/8250_port.c:3357 console_emit_next_record kernel/printk/printk.c:2913 [inline] console_flush_all+0x53c/0xd70 kernel/printk/printk.c:2979 console_unlock+0xae/0x290 kernel/printk/printk.c:3048 vprintk_emit kernel/printk/printk.c:2348 [inline] vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303 dev_vprintk_emit drivers/base/core.c:4909 [inline] dev_printk_emit+0xfb/0x140 drivers/base/core.c:4920 __dev_printk+0xf5/0x270 drivers/base/core.c:4932 _dev_err+0xe5/0x120 drivers/base/core.c:4975 urb_ctl_callback+0x1eb/0x2f0 drivers/input/misc/yealink.c:454 __usb_hcd_giveback_urb+0x466/0x6e0 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__tlb_adjust_range include/asm-generic/tlb.h:367 [inline] RIP: 0010:tlb_flush_pte_range include/asm-generic/tlb.h:577 [inline] RIP: 0010:tlb_remove_tlb_entries include/asm-generic/tlb.h:631 [inline] RIP: 0010:zap_present_folio_ptes mm/memory.c:1499 [inline] RIP: 0010:zap_present_ptes mm/memory.c:1564 [inline] RIP: 0010:zap_pte_range mm/memory.c:1606 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1724 [inline] RIP: 0010:zap_pud_range mm/memory.c:1753 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1774 [inline] RIP: 0010:unmap_page_range+0xc05/0x3310 mm/memory.c:1795 Code: ff 48 8b 44 24 10 48 8d 78 10 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 d4 25 00 00 48 8b 54 24 10 48 8b 4c 24 08 48 8b 42 10 <48> 8d 7a 18 48 39 c8 48 0f 47 c1 48 89 42 10 48 89 f8 48 c1 e8 03 RSP: 0018:ffffc900022476c0 EFLAGS: 00000246 RAX: 0000001b2cc20000 RBX: 0000000000000000 RCX: 0000001b2cc2b000 RDX: ffffc90002247ad0 RSI: ffffffff81165d15 RDI: ffffc90002247ae0 RBP: 80000001205cc025 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000003 R12: 0000000000000000 R13: ffffc900022477e0 R14: dffffc0000000000 R15: ffffea0004817300 unmap_single_vma+0x194/0x2b0 mm/memory.c:1841 unmap_vmas+0x22f/0x490 mm/memory.c:1885 exit_mmap+0x1b8/0xb20 mm/mmap.c:3341 __mmput kernel/fork.c:1346 [inline] mmput+0xdb/0x430 kernel/fork.c:1368 exit_mm kernel/exit.c:565 [inline] do_exit+0x9b7/0x2b20 kernel/exit.c:861 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023 get_signal+0x2616/0x2710 kernel/signal.c:2909 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9f571b04d1 Code: Unable to access opcode bytes at 0x7f9f571b04a7. RSP: 002b:00007ffe6367d930 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: fffffffffffffffe RBX: 0000000000000055 RCX: 00007f9f571b04d1 RDX: 0000000000090800 RSI: 00007f9f5721e9f8 RDI: 00000000ffffff9c RBP: 00007ffe6367d9ec R08: 000000000002466a R09: 00007f9f57315080 R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffe6367da60 R13: 0000000000000000 R14: 00000000000bb1e5 R15: 00000000000bb1e5