[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.821111][ T1675] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 16.124437][ C1] random: crng init done Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.101' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 64.339075][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 64.579096][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 64.699191][ T12] usb 1-1: config 1 has an invalid interface number: 237 but max is 0 [ 64.708926][ T12] usb 1-1: config 1 has no interface number 0 [ 64.715927][ T12] usb 1-1: New USB device found, idVendor=0424, idProduct=c001, bcdDevice=a9.f3 [ 64.726151][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 executing program [ 64.989247][ T12] usb 1-1: string descriptor 0 read error: -71 [ 64.998158][ T12] usb 1-1: claimed gadget: Vendor=0424 ProdID=c001 Bus=01 Device=02 [ 65.008012][ T12] usb 1-1: device path: /sys/bus/usb/devices/1-1:1.237 [ 65.016625][ T12] most_core: registered new device mdev0 (1-1:1.237) [ 65.025073][ T12] usb 1-1: USB disconnect, device number 2 [ 65.032658][ T12] kasan: CONFIG_KASAN_INLINE enabled [ 65.038777][ T12] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 65.048153][ T12] general protection fault: 0000 [#1] SMP KASAN [ 65.054541][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc1+ #10 [ 65.062528][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.073791][ T12] Workqueue: usb_hub_wq hub_event [ 65.079633][ T12] RIP: 0010:device_del+0x7a/0xb80 [ 65.085400][ T12] Code: c7 40 04 00 07 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 31 c0 e8 f1 ba d5 fe 48 8d 7b 40 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 79 0a 00 00 48 8b 43 40 4c 8d a3 80 00 00 00 31 [ 65.106899][ T12] RSP: 0018:ffff8881d9e0f7d0 EFLAGS: 00010202 [ 65.113349][ T12] RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000000 [ 65.122625][ T12] RDX: 0000000000000000 RSI: ffffffff826710ff RDI: 0000000000000040 [ 65.131924][ T12] RBP: dffffc0000000000 R08: ffff8881d9df9800 R09: ffffed1039f8d706 [ 65.140046][ T12] R10: ffffed1039f8d705 R11: ffff8881cfc6b82f R12: ffff8881d0f0ef28 [ 65.149129][ T12] R13: ffff8881cfc6b760 R14: ffff8881d0f0eeb0 R15: 0000000000000000 [ 65.158457][ T12] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 65.167929][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.175200][ T12] CR2: 00007f3294773000 CR3: 00000001d1682000 CR4: 00000000001406f0 [ 65.183666][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.192834][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.201372][ T12] Call Trace: [ 65.205086][ T12] ? try_to_del_timer_sync+0xbf/0x110 [ 65.210797][ T12] ? __device_links_no_driver+0x240/0x240 [ 65.217230][ T12] ? mark_held_locks+0x9f/0xe0 [ 65.222811][ T12] ? del_timer_sync+0x121/0x130 [ 65.228833][ T12] device_unregister+0x11/0x30 [ 65.234134][ T12] hdm_disconnect+0xdf/0x200 [ 65.239228][ T12] usb_unbind_interface+0x1bd/0x8a0 [ 65.245764][ T12] ? usb_autoresume_device+0x60/0x60 [ 65.252096][ T12] device_release_driver_internal+0x404/0x4c0 [ 65.259983][ T12] bus_remove_device+0x2dc/0x4a0 [ 65.265053][ T12] device_del+0x460/0xb80 [ 65.269934][ T12] ? __device_links_no_driver+0x240/0x240 [ 65.276101][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 65.281916][ T12] ? remove_intf_ep_devs+0x13f/0x1d0 [ 65.287887][ T12] usb_disable_device+0x211/0x690 [ 65.293114][ T12] usb_disconnect+0x284/0x830 [ 65.298394][ T12] hub_event+0x1409/0x3590 [ 65.303017][ T12] ? hub_port_debounce+0x260/0x260 [ 65.308400][ T12] process_one_work+0x905/0x1570 [ 65.313545][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 65.319261][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 65.324326][ T12] worker_thread+0x7ab/0xe20 [ 65.329062][ T12] ? process_one_work+0x1570/0x1570 [ 65.334545][ T12] kthread+0x30b/0x410 [ 65.339054][ T12] ? kthread_park+0x1a0/0x1a0 [ 65.344014][ T12] ret_from_fork+0x24/0x30 [ 65.348603][ T12] Modules linked in: [ 65.352959][ T12] ---[ end trace aa5504a516b276d8 ]--- [ 65.359303][ T12] RIP: 0010:device_del+0x7a/0xb80 [ 65.364792][ T12] Code: c7 40 04 00 07 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 31 c0 e8 f1 ba d5 fe 48 8d 7b 40 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 79 0a 00 00 48 8b 43 40 4c 8d a3 80 00 00 00 31 [ 65.388677][ T12] RSP: 0018:ffff8881d9e0f7d0 EFLAGS: 00010202 [ 65.396016][ T12] RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000000 [ 65.406519][ T12] RDX: 0000000000000000 RSI: ffffffff826710ff RDI: 0000000000000040 [ 65.415902][ T12] RBP: dffffc0000000000 R08: ffff8881d9df9800 R09: ffffed1039f8d706 [ 65.425254][ T12] R10: ffffed1039f8d705 R11: ffff8881cfc6b82f R12: ffff8881d0f0ef28 [ 65.434614][ T12] R13: ffff8881cfc6b760 R14: ffff8881d0f0eeb0 R15: 0000000000000000 [ 65.444318][ T12] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 65.455012][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.463410][ T12] CR2: 00007f3294773000 CR3: 00000001d1682000 CR4: 00000000001406f0 [ 65.473051][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.482954][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.492061][ T12] Kernel panic - not syncing: Fatal exception [ 65.500086][ T12] Kernel Offset: disabled [ 65.505026][ T12] Rebooting in 86400 seconds..