Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.253179][ T21] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 30.493174][ T21] usb 1-1: Using ep0 maxpacket: 8 [ 30.613217][ T21] usb 1-1: config 0 has an invalid interface number: 175 but max is 0 [ 30.621721][ T21] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 30.632291][ T21] usb 1-1: config 0 has no interface number 0 [ 30.638555][ T21] usb 1-1: New USB device found, idVendor=2040, idProduct=0265, bcdDevice= 7.16 [ 30.647922][ T21] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.657343][ T21] usb 1-1: config 0 descriptor?? [ 30.695261][ T21] em28xx 1-1:0.175: New device @ 480 Mbps (2040:0265, interface 175, class 175) [ 30.704628][ T21] em28xx 1-1:0.175: Video interface 175 found: executing program [ 30.943257][ T21] em28xx 1-1:0.175: unknown em28xx chip ID (0) [ 31.093223][ T21] em28xx 1-1:0.175: reading from i2c device at 0xa0 failed (error=-5) [ 31.101601][ T21] em28xx 1-1:0.175: board has no eeprom [ 31.213168][ T21] em28xx 1-1:0.175: Identified as Hauppauge WinTV-dualHD DVB (card=99) [ 31.221665][ T21] em28xx 1-1:0.175: Currently, V4L2 is not supported on this model [ 31.353196][ T21] em28xx 1-1:0.175: unknown em28xx chip ID (0) [ 31.503175][ T21] em28xx 1-1:0.175: reading from i2c device at 0xa0 failed (error=-5) [ 31.511464][ T21] em28xx 1-1:0.175: board has no eeprom [ 31.623123][ T21] em28xx 1-1:0.175: Identified as Hauppauge WinTV-dualHD DVB (card=99) [ 31.863955][ T1723] em28xx 1-1:0.175: Binding DVB extension [ 31.869925][ T1723] em28xx 1-1:0.175: no endpoint for DVB mode and transfer type 0 [ 31.877874][ T1723] em28xx 1-1:0.175: failed to pre-allocate USB transfer buffers for DVB. [ 31.886509][ T1723] em28xx 1-1:0.175: Binding DVB extension [ 31.898190][ T21] usb 1-1: USB disconnect, device number 2 [ 31.906148][ T21] em28xx 1-1:0.175: Disconnecting em28xx #1 [ 31.912260][ T21] ------------[ cut here ]------------ [ 31.917870][ T21] WARNING: CPU: 1 PID: 21 at kernel/workqueue.c:3031 __flush_work.cold+0x2c/0x36 [ 31.927362][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 31.934264][ T21] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.3.0-rc2+ #25 [ 31.942018][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.952079][ T21] Workqueue: usb_hub_wq hub_event [ 31.957276][ T21] Call Trace: [ 31.960620][ T21] dump_stack+0xca/0x13e [ 31.965111][ T21] ? alloc_unbound_pwq.cold+0x40/0x6a [ 31.971638][ T21] panic+0x2a3/0x6da [ 31.975732][ T21] ? add_taint.cold+0x16/0x16 [ 31.980486][ T21] ? __probe_kernel_read+0x188/0x1d0 [ 31.985780][ T21] ? __warn.cold+0x5/0x4a [ 31.990110][ T21] ? __warn+0xe3/0x1e0 [ 31.994260][ T21] ? __flush_work.cold+0x2c/0x36 [ 31.999595][ T21] __warn.cold+0x20/0x4a [ 32.003835][ T21] ? __flush_work.cold+0x2c/0x36 [ 32.008987][ T21] report_bug+0x262/0x2a0 [ 32.013304][ T21] do_error_trap+0x12b/0x1e0 [ 32.017879][ T21] ? __flush_work.cold+0x2c/0x36 [ 32.022948][ T21] do_invalid_op+0x32/0x40 [ 32.027646][ T21] ? __flush_work.cold+0x2c/0x36 [ 32.032661][ T21] invalid_op+0x23/0x30 [ 32.037069][ T21] RIP: 0010:__flush_work.cold+0x2c/0x36 [ 32.042687][ T21] Code: 9a 22 00 48 c7 c7 20 e4 c5 85 e8 d9 3a 0d 00 0f 0b 45 31 e4 e9 98 86 ff ff e8 51 9a 22 00 48 c7 c7 20 e4 c5 85 e8 be 3a 0d 00 <0f> 0b 45 31 e4 e9 7d 86 ff ff e8 36 9a 22 00 48 c7 c7 20 e4 c5 85 [ 32.066233][ T21] RSP: 0018:ffff8881da2f7720 EFLAGS: 00010286 [ 32.072615][ T21] RAX: 0000000000000024 RBX: dffffc0000000000 RCX: 0000000000000000 [ 32.081158][ T21] RDX: 0000000000000000 RSI: ffffffff8128a0fd RDI: ffffed103b45eed6 [ 32.090281][ T21] RBP: ffff8881da2f7888 R08: 0000000000000024 R09: fffffbfff11acd9a [ 32.100441][ T21] R10: fffffbfff11acd99 R11: ffffffff88d66ccf R12: 0000000000000000 [ 32.109253][ T21] R13: 0000000000000001 R14: ffff8881d2e99df8 R15: ffff8881d2d61b78 [ 32.117896][ T21] ? vprintk_func+0x7d/0x113 [ 32.122925][ T21] ? wq_update_unbound_numa+0x710/0x710 [ 32.128901][ T21] ? __dev_printk+0x1db/0x203 [ 32.133677][ T21] ? _dev_info+0xd7/0x109 [ 32.138711][ T21] ? _dev_notice+0x109/0x109 [ 32.143931][ T21] ? lockdep_hardirqs_on+0x379/0x580 [ 32.149820][ T21] ? usb_hcd_flush_endpoint+0x14c/0x2d0 [ 32.155978][ T21] ? usb_disable_endpoint+0x1ba/0x1f0 [ 32.161459][ T21] em28xx_usb_disconnect.cold+0x280/0x2a6 [ 32.170214][ T21] usb_unbind_interface+0x1bd/0x8a0 [ 32.177191][ T21] ? usb_autoresume_device+0x60/0x60 [ 32.182587][ T21] device_release_driver_internal+0x404/0x4c0 [ 32.188714][ T21] bus_remove_device+0x2dc/0x4a0 [ 32.195974][ T21] device_del+0x420/0xb10 [ 32.200916][ T21] ? __device_links_no_driver+0x240/0x240 [ 32.207857][ T21] ? usb_remove_ep_devs+0x3e/0x80 [ 32.213675][ T21] ? remove_intf_ep_devs+0x13f/0x1d0 [ 32.220341][ T21] usb_disable_device+0x211/0x690 [ 32.225687][ T21] usb_disconnect+0x284/0x8d0 [ 32.230774][ T21] hub_event+0x1454/0x3640 [ 32.235406][ T21] ? find_held_lock+0x2d/0x110 [ 32.240229][ T21] ? mark_held_locks+0xe0/0xe0 [ 32.245957][ T21] ? hub_port_debounce+0x260/0x260 [ 32.252587][ T21] process_one_work+0x92b/0x1530 [ 32.257632][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 32.263522][ T21] ? do_raw_spin_lock+0x11a/0x280 [ 32.269121][ T21] worker_thread+0x7ab/0xe20 [ 32.276466][ T21] ? process_one_work+0x1530/0x1530 [ 32.282107][ T21] kthread+0x318/0x420 [ 32.286548][ T21] ? kthread_create_on_node+0xf0/0xf0 [ 32.292243][ T21] ret_from_fork+0x24/0x30 [ 32.297457][ T21] Kernel Offset: disabled [ 32.302033][ T21] Rebooting in 86400 seconds..