[ 16.612593][ T5529] 8021q: adding VLAN 0 to HW filter on device bond0 [ 16.619181][ T5529] eql: remember to turn off Van-Jacobson compression on your slave devices [ 16.667937][ T11] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 16.677023][ T5440] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller syzkaller login: [ 69.617326][ T1522] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.172' (ECDSA) to the list of known hosts. executing program [ 489.735941][ T1522] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 489.975907][ T1522] usb 1-1: Using ep0 maxpacket: 8 [ 490.096037][ T1522] usb 1-1: config 3 has an invalid interface number: 239 but max is 1 [ 490.098131][ T1522] usb 1-1: config 3 has no interface number 1 [ 490.099773][ T1522] usb 1-1: config 3 interface 0 altsetting 0 endpoint 0xA has invalid wMaxPacketSize 0 [ 490.102033][ T1522] usb 1-1: config 3 interface 239 altsetting 9 has an invalid endpoint with address 0x0, skipping [ 490.104610][ T1522] usb 1-1: config 3 interface 239 has no altsetting 0 [ 490.265966][ T1522] usb 1-1: New USB device found, idVendor=0711, idProduct=0920, bcdDevice=eb.31 [ 490.268137][ T1522] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 490.269974][ T1522] usb 1-1: Product: syz [ 490.270956][ T1522] usb 1-1: Manufacturer: syz [ 490.271980][ T1522] usb 1-1: SerialNumber: syz [ 495.457556][ T1522] usb 1-1: USB2VGA dongle found at address 2 [ 495.461809][ T1522] usb 1-1: Allocated 8 output buffers [ 552.535441][ T5475] udevd[5475]: worker [5980] /devices/platform/dummy_hcd.0/usb1/1-1 is taking a long time [ 591.215864][ T1522] usb 1-1: Failed to early initialize device [ 591.357138][ T1522] usb 1-1: USB2VGA dongle found at address 2 [ 591.359410][ T1522] usb 1-1: Allocated 8 output buffers [ 672.459766][ T5475] udevd[5475]: worker [5980] /devices/platform/dummy_hcd.0/usb1/1-1 timeout; kill it [ 672.462573][ T5475] udevd[5475]: seq 10115 '/devices/platform/dummy_hcd.0/usb1/1-1' killed [ 672.465568][ T5475] udevd[5475]: worker [5980] terminated by signal 9 (Killed) [ 672.467600][ T5475] udevd[5475]: worker [5980] failed while handling '/devices/platform/dummy_hcd.0/usb1/1-1' [ 687.135957][ T1522] usb 1-1: Failed to early initialize device [ 687.144002][ T1973] usb 1-1: USB disconnect, device number 2 executing program executing program executing program [ 697.565857][ T1973] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 697.825934][ T1973] usb 1-1: Using ep0 maxpacket: 8 [ 697.945957][ T1973] usb 1-1: config 3 has an invalid interface number: 239 but max is 1 [ 697.947929][ T1973] usb 1-1: config 3 has no interface number 1 [ 697.949445][ T1973] usb 1-1: config 3 interface 0 altsetting 0 endpoint 0xA has invalid wMaxPacketSize 0 [ 697.951759][ T1973] usb 1-1: config 3 interface 239 altsetting 9 has an invalid endpoint with address 0x0, skipping [ 697.954287][ T1973] usb 1-1: config 3 interface 239 has no altsetting 0 [ 698.115974][ T1973] usb 1-1: New USB device found, idVendor=0711, idProduct=0920, bcdDevice=eb.31 [ 698.118085][ T1973] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 698.119908][ T1973] usb 1-1: Product: syz [ 698.120832][ T1973] usb 1-1: Manufacturer: syz [ 698.121916][ T1973] usb 1-1: SerialNumber: syz [ 703.287512][ T1973] usb 1-1: USB2VGA dongle found at address 3 [ 703.290953][ T1973] usb 1-1: Allocated 8 output buffers [ 760.363585][ T5475] udevd[5475]: worker [5991] /devices/platform/dummy_hcd.0/usb1/1-1 is taking a long time [ 799.055902][ T1973] usb 1-1: Failed to early initialize device [ 799.177049][ T1973] usb 1-1: USB2VGA dongle found at address 3 [ 799.179153][ T1973] usb 1-1: Allocated 8 output buffers [ 858.095958][ T28] INFO: task syz-executor255:5995 blocked for more than 143 seconds. [ 858.098022][ T28] Not tainted 6.3.0-rc4-syzkaller-g59caa87f9dfb #0 [ 858.099758][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.101869][ T28] task:syz-executor255 state:D stack:0 pid:5995 ppid:5978 flags:0x00000001 [ 858.104079][ T28] Call trace: [ 858.104897][ T28] __switch_to+0x320/0x754 [ 858.106059][ T28] __schedule+0x1048/0x1e38 [ 858.107125][ T28] schedule+0xc4/0x170 [ 858.108117][ T28] schedule_preempt_disabled+0x18/0x2c [ 858.109463][ T28] __mutex_lock_common+0xbd8/0x21a0 [ 858.110755][ T28] mutex_lock_nested+0x38/0x44 [ 858.111942][ T28] usbdev_open+0x13c/0x6c0 [ 858.113067][ T28] chrdev_open+0x3e8/0x4fc [ 858.114186][ T28] do_dentry_open+0x724/0xf90 [ 858.115302][ T28] vfs_open+0x7c/0x90 [ 858.116376][ T28] path_openat+0x1f2c/0x27f8 [ 858.117443][ T28] do_filp_open+0x1bc/0x3cc [ 858.118553][ T28] do_sys_openat2+0x128/0x3d8 [ 858.119708][ T28] __arm64_sys_openat+0x1f0/0x240 [ 858.120983][ T28] invoke_syscall+0x98/0x2c0 [ 858.122106][ T28] el0_svc_common+0x138/0x258 [ 858.123266][ T28] do_el0_svc+0x64/0x198 [ 858.124352][ T28] el0_svc+0x58/0x168 [ 858.125340][ T28] el0t_64_sync_handler+0x84/0xf0 [ 858.126633][ T28] el0t_64_sync+0x190/0x194 [ 858.127761][ T28] [ 858.127761][ T28] Showing all locks held in the system: [ 858.129577][ T28] 1 lock held by rcu_tasks_kthre/12: [ 858.130842][ T28] #0: ffff800015d36810 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 858.133436][ T28] 1 lock held by rcu_tasks_trace/13: [ 858.134737][ T28] #0: ffff800015d37010 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 858.137603][ T28] 1 lock held by khungtaskd/28: [ 858.138817][ T28] #0: ffff800015d36640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 858.141153][ T28] 5 locks held by kworker/0:2/1973: [ 858.142429][ T28] #0: ffff0000c13f9538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 [ 858.145076][ T28] #1: ffff800023a67c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 [ 858.147897][ T28] #2: ffff0000ce871190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x474c [ 858.150077][ T28] #3: ffff0000c122c190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 [ 858.152372][ T28] #4: ffff0000d87e4118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 [ 858.154596][ T28] 2 locks held by getty/5626: [ 858.155711][ T28] #0: ffff0000d8731098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 858.158029][ T28] #1: ffff80001a8602f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 [ 858.160392][ T28] 4 locks held by udevd/5991: [ 858.161605][ T28] #0: ffff0000d5ebe790 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xac/0xc44 [ 858.163696][ T28] #1: ffff0000d222ac88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x58/0x384 [ 858.166046][ T28] #2: ffff0000d53f13a8 (kn->active#9){.+.+}-{0:0}, at: kernfs_seq_start+0x74/0x384 [ 858.168389][ T28] #3: ffff0000c122c190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x30/0xac [ 858.170603][ T28] 1 lock held by syz-executor255/5995: [ 858.172012][ T28] #0: ffff0000ce871190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 [ 858.174230][ T28] [ 858.174804][ T28] ============================================= [ 858.174804][ T28] [ 858.176942][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 858.178678][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc4-syzkaller-g59caa87f9dfb #0 [ 858.180899][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 858.183328][ T28] Call trace: [ 858.184179][ T28] dump_backtrace+0x1b8/0x1e4 [ 858.185254][ T28] show_stack+0x2c/0x3c [ 858.186336][ T28] dump_stack_lvl+0xd0/0x124 [ 858.187470][ T28] dump_stack+0x1c/0x28 [ 858.188511][ T28] panic+0x2e0/0x7b8 [ 858.189476][ T28] hung_task_panic+0x0/0x2c [ 858.190678][ T28] kthread+0x24c/0x2d4 [ 858.191702][ T28] ret_from_fork+0x10/0x20 [ 858.192710][ T28] SMP: stopping secondary CPUs [ 858.193963][ T28] Kernel Offset: disabled [ 858.195065][ T28] CPU features: 0x000000,20700402,32017203 [ 858.196467][ T28] Memory Limit: none [ 858.724377][ T28] Rebooting in 86400 seconds..