Warning: Permanently added '10.128.0.185' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.087207][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 29.447437][ T12] usb 1-1: config 0 has an invalid interface number: 197 but max is 0 [ 29.455660][ T12] usb 1-1: config 0 has no interface number 0 [ 29.461795][ T12] usb 1-1: config 0 interface 197 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 29.472842][ T12] usb 1-1: config 0 interface 197 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 29.483472][ T12] usb 1-1: New USB device found, idVendor=2040, idProduct=026d, bcdDevice=f8.7b [ 29.492507][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.501815][ T12] usb 1-1: config 0 descriptor?? [ 29.549382][ T12] em28xx 1-1:0.197: New device @ 480 Mbps (2040:026d, interface 197, class 197) [ 29.558757][ T12] em28xx 1-1:0.197: DVB interface 197 found: bulk executing program [ 29.787416][ T12] em28xx 1-1:0.197: unknown em28xx chip ID (0) [ 29.937289][ T12] em28xx 1-1:0.197: reading from i2c device at 0xa0 failed (error=-5) [ 29.945609][ T12] em28xx 1-1:0.197: board has no eeprom [ 30.057198][ T12] em28xx 1-1:0.197: Identified as Hauppauge WinTV-dualHD 01595 ATSC/QAM (card=100) [ 30.066581][ T12] em28xx 1-1:0.197: dvb set to bulk mode. [ 30.197266][ T12] em28xx 1-1:0.197: unknown em28xx chip ID (0) [ 30.357273][ T12] em28xx 1-1:0.197: reading from i2c device at 0xa0 failed (error=-5) [ 30.365483][ T12] em28xx 1-1:0.197: board has no eeprom [ 30.477183][ T12] em28xx 1-1:0.197: Identified as Hauppauge WinTV-dualHD 01595 ATSC/QAM (card=100) [ 30.486526][ T12] em28xx 1-1:0.197: dvb ts2 set to bulk mode. [ 30.727964][ T102] em28xx 1-1:0.197: Binding DVB extension [ 30.736393][ T12] usb 1-1: USB disconnect, device number 2 [ 30.743469][ T12] em28xx 1-1:0.197: Disconnecting em28xx #1 [ 30.749456][ T12] ------------[ cut here ]------------ [ 30.754918][ T12] WARNING: CPU: 0 PID: 12 at kernel/workqueue.c:3031 __flush_work.cold+0x2c/0x36 [ 30.764048][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 30.770614][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc7+ #0 [ 30.777956][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.788030][ T12] Workqueue: usb_hub_wq hub_event [ 30.793044][ T12] Call Trace: [ 30.796318][ T12] dump_stack+0xca/0x13e [ 30.800551][ T12] ? alloc_unbound_pwq.cold+0x50/0x6a [ 30.805904][ T12] panic+0x2a3/0x6da [ 30.809777][ T12] ? add_taint.cold+0x16/0x16 [ 30.814434][ T12] ? __probe_kernel_read+0x188/0x1d0 [ 30.819715][ T12] ? __warn.cold+0x5/0x4a [ 30.824020][ T12] ? __warn+0xe3/0x1e0 [ 30.828082][ T12] ? __flush_work.cold+0x2c/0x36 [ 30.833006][ T12] __warn.cold+0x20/0x4a [ 30.837223][ T12] ? __flush_work.cold+0x2c/0x36 [ 30.842135][ T12] report_bug+0x262/0x2a0 [ 30.846440][ T12] do_error_trap+0x12b/0x1e0 [ 30.851006][ T12] ? __flush_work.cold+0x2c/0x36 [ 30.855918][ T12] do_invalid_op+0x32/0x40 [ 30.860310][ T12] ? __flush_work.cold+0x2c/0x36 [ 30.865222][ T12] invalid_op+0x23/0x30 [ 30.869352][ T12] RIP: 0010:__flush_work.cold+0x2c/0x36 [ 30.874888][ T12] Code: 85 22 00 48 c7 c7 80 e7 c5 85 e8 c9 26 0d 00 0f 0b 45 31 e4 e9 98 86 ff ff e8 31 85 22 00 48 c7 c7 80 e7 c5 85 e8 ae 26 0d 00 <0f> 0b 45 31 e4 e9 7d 86 ff ff e8 16 85 22 00 48 c7 c7 80 e7 c5 85 [ 30.894469][ T12] RSP: 0018:ffff8881da20f720 EFLAGS: 00010286 [ 30.900510][ T12] RAX: 0000000000000024 RBX: dffffc0000000000 RCX: 0000000000000000 [ 30.908462][ T12] RDX: 0000000000000000 RSI: ffffffff81288ddd RDI: ffffed103b441ed6 [ 30.916411][ T12] RBP: ffff8881da20f888 R08: 0000000000000024 R09: ffffed103b643ee7 [ 30.924400][ T12] R10: ffffed103b643ee6 R11: ffff8881db21f737 R12: 0000000000000000 [ 30.932359][ T12] R13: 0000000000000001 R14: ffff8881d2f35df8 R15: ffff8881d2b61b78 [ 30.940334][ T12] ? vprintk_func+0x7d/0x113 [ 30.944906][ T12] ? wq_update_unbound_numa+0x710/0x710 [ 30.950443][ T12] ? __dev_printk+0x1db/0x203 [ 30.955095][ T12] ? _dev_info+0xd7/0x109 [ 30.959412][ T12] ? _dev_notice+0x109/0x109 [ 30.963992][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 30.969260][ T12] ? usb_hcd_flush_endpoint+0x14c/0x2d0 [ 30.974790][ T12] ? usb_disable_endpoint+0x1ba/0x1f0 [ 30.980142][ T12] em28xx_usb_disconnect.cold+0x280/0x2a6 [ 30.985883][ T12] usb_unbind_interface+0x1bd/0x8a0 [ 30.991060][ T12] ? usb_autoresume_device+0x60/0x60 [ 30.996323][ T12] device_release_driver_internal+0x42f/0x500 [ 31.002367][ T12] bus_remove_device+0x2dc/0x4a0 [ 31.007322][ T12] device_del+0x420/0xb10 [ 31.011627][ T12] ? __device_links_no_driver+0x240/0x240 [ 31.017324][ T12] ? usb_remove_ep_devs+0x3e/0x80 [ 31.022324][ T12] ? remove_intf_ep_devs+0x13f/0x1d0 [ 31.027587][ T12] usb_disable_device+0x211/0x690 [ 31.032593][ T12] usb_disconnect+0x284/0x8d0 [ 31.037329][ T12] hub_event+0x1454/0x3640 [ 31.041721][ T12] ? find_held_lock+0x2d/0x110 [ 31.046469][ T12] ? mark_held_locks+0xe0/0xe0 [ 31.051217][ T12] ? hub_port_debounce+0x260/0x260 [ 31.056314][ T12] process_one_work+0x92b/0x1530 [ 31.061236][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 31.066624][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 31.071630][ T12] worker_thread+0x7ab/0xe20 [ 31.076197][ T12] ? process_one_work+0x1530/0x1530 [ 31.081385][ T12] kthread+0x318/0x420 [ 31.085432][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 31.090780][ T12] ret_from_fork+0x24/0x30 [ 31.095970][ T12] Kernel Offset: disabled [ 31.100333][ T12] Rebooting in 86400 seconds..