[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[ 14.373278][ T1665] random: sshd: uninitialized urandom read (32 bytes read) [ 14.390527][ C1] random: crng init done [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.992574][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 27.352605][ T83] usb 1-1: config 1 has an invalid interface number: 86 but max is 0 [ 27.360744][ T83] usb 1-1: config 1 contains an unexpected descriptor of type 0x1, skipping [ 27.369561][ T83] usb 1-1: config 1 has no interface number 0 [ 27.375684][ T83] usb 1-1: config 1 interface 86 altsetting 1 endpoint 0x84 has invalid maxpacket 628, setting to 64 [ 27.386571][ T83] usb 1-1: config 1 interface 86 altsetting 1 has an invalid endpoint with address 0x69, skipping [ 27.397168][ T83] usb 1-1: config 1 interface 86 altsetting 1 has an invalid endpoint with address 0x80, skipping [ 27.407770][ T83] usb 1-1: config 1 interface 86 altsetting 1 endpoint 0xD has invalid maxpacket 866, setting to 64 [ 27.418534][ T83] usb 1-1: config 1 interface 86 altsetting 1 endpoint 0x9 has invalid maxpacket 340, setting to 64 [ 27.429305][ T83] usb 1-1: config 1 interface 86 altsetting 1 endpoint 0xF has invalid maxpacket 215, setting to 64 [ 27.440071][ T83] usb 1-1: config 1 interface 86 altsetting 1 endpoint 0x4 has an invalid bInterval 127, changing to 10 [ 27.451194][ T83] usb 1-1: config 1 interface 86 has no altsetting 0 [ 27.692616][ T83] usb 1-1: string descriptor 0 read error: -22 [ 27.698967][ T83] usb 1-1: New USB device found, idVendor=2040, idProduct=026d, bcdDevice=e8.93 [ 27.708126][ T83] usb 1-1: New USB device strings: Mfr=0, Product=251, SerialNumber=2 [ 27.754736][ T83] em28xx 1-1:1.86: New device @ 480 Mbps (2040:026d, interface 86, class 86) [ 27.763818][ T83] em28xx 1-1:1.86: DVB interface 86 found: bulk executing program [ 28.002600][ T83] em28xx 1-1:1.86: unknown em28xx chip ID (0) [ 28.152630][ T83] em28xx 1-1:1.86: reading from i2c device at 0xa0 failed (error=-5) [ 28.160972][ T83] em28xx 1-1:1.86: board has no eeprom [ 28.272556][ T83] em28xx 1-1:1.86: Identified as Hauppauge WinTV-dualHD 01595 ATSC/QAM (card=100) [ 28.281768][ T83] em28xx 1-1:1.86: dvb set to bulk mode. [ 28.412573][ T83] em28xx 1-1:1.86: unknown em28xx chip ID (0) [ 28.562622][ T83] em28xx 1-1:1.86: reading from i2c device at 0xa0 failed (error=-5) [ 28.570709][ T83] em28xx 1-1:1.86: board has no eeprom [ 28.702531][ T83] em28xx 1-1:1.86: Identified as Hauppauge WinTV-dualHD 01595 ATSC/QAM (card=100) [ 28.711882][ T83] em28xx 1-1:1.86: dvb ts2 set to bulk mode. [ 28.953221][ T17] em28xx 1-1:1.86: Binding DVB extension [ 28.962940][ T83] usb 1-1: USB disconnect, device number 2 [ 28.970001][ T83] em28xx 1-1:1.86: Disconnecting em28xx #1 [ 28.975964][ T83] ------------[ cut here ]------------ [ 28.981429][ T83] WARNING: CPU: 1 PID: 83 at kernel/workqueue.c:3031 __flush_work.cold+0x2c/0x36 [ 28.990503][ T83] Kernel panic - not syncing: panic_on_warn set ... [ 28.997062][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.3.0-rc5+ #28 [ 29.004491][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.014534][ T83] Workqueue: usb_hub_wq hub_event [ 29.019533][ T83] Call Trace: [ 29.022802][ T83] dump_stack+0xca/0x13e [ 29.027023][ T83] ? alloc_unbound_pwq.cold+0x30/0x6a [ 29.032367][ T83] panic+0x2a3/0x6da [ 29.036242][ T83] ? add_taint.cold+0x16/0x16 [ 29.040893][ T83] ? __probe_kernel_read+0x188/0x1d0 [ 29.046157][ T83] ? __warn.cold+0x5/0x4a [ 29.050464][ T83] ? __warn+0xe3/0x1e0 [ 29.054605][ T83] ? __flush_work.cold+0x2c/0x36 [ 29.059518][ T83] __warn.cold+0x20/0x4a [ 29.063735][ T83] ? __flush_work.cold+0x2c/0x36 [ 29.068646][ T83] report_bug+0x262/0x2a0 [ 29.073061][ T83] do_error_trap+0x12b/0x1e0 [ 29.077779][ T83] ? __flush_work.cold+0x2c/0x36 [ 29.082703][ T83] do_invalid_op+0x32/0x40 [ 29.087096][ T83] ? __flush_work.cold+0x2c/0x36 [ 29.092008][ T83] invalid_op+0x23/0x30 [ 29.096139][ T83] RIP: 0010:__flush_work.cold+0x2c/0x36 [ 29.101661][ T83] Code: 85 22 00 48 c7 c7 40 e6 c5 85 e8 c9 26 0d 00 0f 0b 45 31 e4 e9 98 86 ff ff e8 51 85 22 00 48 c7 c7 40 e6 c5 85 e8 ae 26 0d 00 <0f> 0b 45 31 e4 e9 7d 86 ff ff e8 36 85 22 00 48 c7 c7 40 e6 c5 85 [ 29.121246][ T83] RSP: 0018:ffff8881d938f720 EFLAGS: 00010286 [ 29.127304][ T83] RAX: 0000000000000024 RBX: dffffc0000000000 RCX: 0000000000000000 [ 29.135317][ T83] RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed103b271ed6 [ 29.143279][ T83] RBP: ffff8881d938f888 R08: 0000000000000024 R09: ffffed103b665d58 [ 29.151222][ T83] R10: ffffed103b665d57 R11: ffff8881db32eabf R12: 0000000000000000 [ 29.159163][ T83] R13: 0000000000000001 R14: ffff8881d2a45df8 R15: ffff8881d2a61b78 [ 29.167117][ T83] ? vprintk_func+0x7d/0x113 [ 29.171683][ T83] ? wq_update_unbound_numa+0x710/0x710 [ 29.177201][ T83] ? __dev_printk+0x1db/0x203 [ 29.181852][ T83] ? _dev_info+0xd7/0x109 [ 29.186539][ T83] ? _dev_notice+0x109/0x109 [ 29.191106][ T83] ? lockdep_hardirqs_on+0x379/0x580 [ 29.196371][ T83] ? usb_hcd_flush_endpoint+0x14c/0x2d0 [ 29.201895][ T83] ? usb_disable_endpoint+0x1ba/0x1f0 [ 29.207239][ T83] em28xx_usb_disconnect.cold+0x280/0x2a6 [ 29.212932][ T83] usb_unbind_interface+0x1bd/0x8a0 [ 29.218114][ T83] ? usb_autoresume_device+0x60/0x60 [ 29.223374][ T83] device_release_driver_internal+0x42f/0x500 [ 29.229462][ T83] bus_remove_device+0x2dc/0x4a0 [ 29.234381][ T83] device_del+0x420/0xb10 [ 29.238686][ T83] ? __device_links_no_driver+0x240/0x240 [ 29.244379][ T83] ? usb_remove_ep_devs+0x3e/0x80 [ 29.249374][ T83] ? remove_intf_ep_devs+0x13f/0x1d0 [ 29.254632][ T83] usb_disable_device+0x211/0x690 [ 29.259629][ T83] usb_disconnect+0x284/0x8d0 [ 29.264280][ T83] hub_event+0x1454/0x3640 [ 29.268686][ T83] ? find_held_lock+0x2d/0x110 [ 29.273423][ T83] ? mark_held_locks+0xe0/0xe0 [ 29.278162][ T83] ? hub_port_debounce+0x260/0x260 [ 29.283247][ T83] process_one_work+0x92b/0x1530 [ 29.288156][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 29.293500][ T83] ? do_raw_spin_lock+0x11a/0x280 [ 29.298497][ T83] worker_thread+0x7ab/0xe20 [ 29.303068][ T83] ? process_one_work+0x1530/0x1530 [ 29.308238][ T83] kthread+0x318/0x420 [ 29.312286][ T83] ? kthread_create_on_node+0xf0/0xf0 [ 29.317632][ T83] ret_from_fork+0x24/0x30 [ 29.322577][ T83] Kernel Offset: disabled [ 29.326921][ T83] Rebooting in 86400 seconds..