Warning: Permanently added '10.128.0.99' (ECDSA) to the list of known hosts. executing program [ 483.876004][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 484.115988][ T22] usb 1-1: Using ep0 maxpacket: 8 [ 484.246239][ T22] usb 1-1: config 3 has an invalid interface number: 239 but max is 1 [ 484.248162][ T22] usb 1-1: config 3 has no interface number 1 [ 484.249575][ T22] usb 1-1: config 3 interface 0 altsetting 0 endpoint 0xA has invalid wMaxPacketSize 0 [ 484.251537][ T22] usb 1-1: config 3 interface 239 altsetting 9 has an invalid endpoint with address 0x0, skipping [ 484.253792][ T22] usb 1-1: config 3 interface 239 has no altsetting 0 [ 484.406111][ T22] usb 1-1: New USB device found, idVendor=0711, idProduct=0920, bcdDevice=eb.31 [ 484.408057][ T22] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 484.409792][ T22] usb 1-1: Product: syz [ 484.410775][ T22] usb 1-1: Manufacturer: syz [ 484.411852][ T22] usb 1-1: SerialNumber: syz [ 489.607637][ T22] usb 1-1: USB2VGA dongle found at address 2 [ 489.611566][ T22] usb 1-1: Allocated 8 output buffers [ 546.683791][ T3839] udevd[3839]: worker [4347] /devices/platform/dummy_hcd.0/usb1/1-1 is taking a long time [ 585.366103][ T22] usb 1-1: Failed to early initialize device [ 585.487461][ T22] usb 1-1: USB2VGA dongle found at address 2 [ 585.489349][ T22] usb 1-1: Allocated 8 output buffers [ 666.589583][ T3839] udevd[3839]: worker [4347] /devices/platform/dummy_hcd.0/usb1/1-1 timeout; kill it [ 666.592207][ T3839] udevd[3839]: seq 9996 '/devices/platform/dummy_hcd.0/usb1/1-1' killed [ 666.596038][ T3839] udevd[3839]: worker [4347] terminated by signal 9 (Killed) [ 666.597750][ T3839] udevd[3839]: worker [4347] failed while handling '/devices/platform/dummy_hcd.0/usb1/1-1' [ 681.286104][ T22] usb 1-1: Failed to early initialize device [ 681.292271][ T109] usb 1-1: USB disconnect, device number 2 executing program executing program executing program [ 691.715993][ T109] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 691.956026][ T109] usb 1-1: Using ep0 maxpacket: 8 [ 692.076025][ T109] usb 1-1: config 3 has an invalid interface number: 239 but max is 1 [ 692.077786][ T109] usb 1-1: config 3 has no interface number 1 [ 692.079130][ T109] usb 1-1: config 3 interface 0 altsetting 0 endpoint 0xA has invalid wMaxPacketSize 0 [ 692.081326][ T109] usb 1-1: config 3 interface 239 altsetting 9 has an invalid endpoint with address 0x0, skipping [ 692.083618][ T109] usb 1-1: config 3 interface 239 has no altsetting 0 [ 692.236163][ T109] usb 1-1: New USB device found, idVendor=0711, idProduct=0920, bcdDevice=eb.31 [ 692.238234][ T109] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 692.239870][ T109] usb 1-1: Product: syz [ 692.240746][ T109] usb 1-1: Manufacturer: syz [ 692.241728][ T109] usb 1-1: SerialNumber: syz [ 697.447263][ T109] usb 1-1: USB2VGA dongle found at address 3 [ 697.450165][ T109] usb 1-1: Allocated 8 output buffers [ 754.515738][ T3839] udevd[3839]: worker [4356] /devices/platform/dummy_hcd.0/usb1/1-1 is taking a long time [ 793.206045][ T109] usb 1-1: Failed to early initialize device [ 793.327210][ T109] usb 1-1: USB2VGA dongle found at address 3 [ 793.329308][ T109] usb 1-1: Allocated 8 output buffers [ 858.086141][ T28] INFO: task syz-executor396:4360 blocked for more than 143 seconds. [ 858.088041][ T28] Not tainted 6.1.22-syzkaller #0 [ 858.089266][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.091223][ T28] task:syz-executor396 state:D stack:0 pid:4360 ppid:4343 flags:0x00000001 [ 858.093263][ T28] Call trace: [ 858.094044][ T28] __switch_to+0x320/0x754 [ 858.094995][ T28] __schedule+0xee4/0x1c98 [ 858.096153][ T28] schedule+0xc4/0x170 [ 858.097114][ T28] schedule_preempt_disabled+0x18/0x2c [ 858.098384][ T28] __mutex_lock_common+0xbd8/0x21a0 [ 858.099562][ T28] mutex_lock_nested+0x38/0x44 [ 858.100668][ T28] usbdev_open+0x13c/0x6c0 [ 858.101740][ T28] chrdev_open+0x3e8/0x4fc [ 858.102694][ T28] do_dentry_open+0x734/0xfa0 [ 858.103815][ T28] vfs_open+0x7c/0x90 [ 858.104710][ T28] path_openat+0x1e14/0x2548 [ 858.105744][ T28] do_filp_open+0x1bc/0x3cc [ 858.106842][ T28] do_sys_openat2+0x128/0x3d8 [ 858.107984][ T28] __arm64_sys_openat+0x1f0/0x240 [ 858.109116][ T28] invoke_syscall+0x98/0x2c0 [ 858.110176][ T28] el0_svc_common+0x138/0x258 [ 858.111230][ T28] do_el0_svc+0x64/0x218 [ 858.112185][ T28] el0_svc+0x58/0x168 [ 858.113145][ T28] el0t_64_sync_handler+0x84/0xf0 [ 858.114284][ T28] el0t_64_sync+0x18c/0x190 [ 858.115376][ T28] [ 858.115376][ T28] Showing all locks held in the system: [ 858.117225][ T28] 1 lock held by rcu_tasks_kthre/12: [ 858.118501][ T28] #0: ffff800015754a30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 858.120923][ T28] 1 lock held by rcu_tasks_trace/13: [ 858.122114][ T28] #0: ffff800015755230 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 858.124590][ T28] 1 lock held by khungtaskd/28: [ 858.125651][ T28] #0: ffff800015754860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 858.127928][ T28] 5 locks held by kworker/0:2/109: [ 858.129106][ T28] #0: ffff0000c26a0d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 [ 858.131620][ T28] #1: ffff80001d737c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 [ 858.134217][ T28] #2: ffff0000cee85190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x44a0 [ 858.136370][ T28] #3: ffff0000ce217190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x480 [ 858.138625][ T28] #4: ffff0000d42f3118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x480 [ 858.140786][ T28] 2 locks held by getty/3992: [ 858.141887][ T28] #0: ffff0000d4316098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 858.144049][ T28] #1: ffff80001ca002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 [ 858.146595][ T28] 4 locks held by udevd/4356: [ 858.147578][ T28] #0: ffff0000d087d2f0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xac/0xc44 [ 858.149601][ T28] #1: ffff0000cf642488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x58/0x384 [ 858.151420][ T28] #2: ffff0000c1a6d830 (kn->active#9){.+.+}-{0:0}, at: kernfs_seq_start+0x74/0x384 [ 858.153385][ T28] #3: ffff0000ce217190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x30/0xac [ 858.155478][ T28] 1 lock held by syz-executor396/4360: [ 858.156819][ T28] #0: ffff0000cee85190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 [ 858.158944][ T28] [ 858.159492][ T28] ============================================= [ 858.159492][ T28] [ 858.161339][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 858.162902][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.22-syzkaller #0 [ 858.164643][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 858.166931][ T28] Call trace: [ 858.167708][ T28] dump_backtrace+0x1c8/0x1f4 [ 858.168778][ T28] show_stack+0x2c/0x3c [ 858.169786][ T28] dump_stack_lvl+0x108/0x170 [ 858.170881][ T28] dump_stack+0x1c/0x5c [ 858.171837][ T28] panic+0x300/0x7fc [ 858.172821][ T28] hung_task_panic+0x0/0x2c [ 858.173895][ T28] kthread+0x24c/0x2d4 [ 858.174840][ T28] ret_from_fork+0x10/0x20 [ 858.175914][ T28] SMP: stopping secondary CPUs [ 858.177026][ T28] Kernel Offset: disabled [ 858.178061][ T28] CPU features: 0x00000,02070084,26017203 [ 858.179447][ T28] Memory Limit: none [ 858.519291][ T28] Rebooting in 86400 seconds..