[info] Using makefile-style concurrent boot in runlevel 2.
[   14.256481][    C1] random: crng init done
[....] 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[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.20' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [  870.659022][   T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[  870.749216][   T83] usb 1-1: Using ep0 maxpacket: 32
[  870.869113][   T83] usb 1-1: config 0 has an invalid interface number: 1 but max is 0
[  870.877537][   T83] usb 1-1: config 0 has no interface number 0
[  870.883944][   T83] usb 1-1: New USB device found, idVendor=0e41, idProduct=5051, bcdDevice=d5.e8
[  870.893063][   T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[  870.906975][   T83] usb 1-1: config 0 descriptor??
[  870.956541][   T83] snd_usb_pod 1-1:0.1: Line 6 Pocket POD found
[  871.159047][   T83] snd_usb_pod 1-1:0.1: set_interface failed
[  871.165245][   T83] snd_usb_pod 1-1:0.1: Line 6 Pocket POD now disconnected
[  871.172860][   T83] snd_usb_pod: probe of 1-1:0.1 failed with error -71
[  871.181441][   T83] usb 1-1: USB disconnect, device number 2
[  871.748942][   T83] usb 1-1: new high-speed USB device number 3 using dummy_hcd
[  871.839045][   T83] usb 1-1: Using ep0 maxpacket: 32
[  871.958995][   T83] usb 1-1: config 0 has an invalid interface number: 1 but max is 0
[  871.967295][   T83] usb 1-1: config 0 has no interface number 0
[  871.973722][   T83] usb 1-1: New USB device found, idVendor=0e41, idProduct=5051, bcdDevice=d5.e8
[  871.982831][   T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[  871.992848][   T83] usb 1-1: config 0 descriptor??
[  872.031228][   T83] snd_usb_pod 1-1:0.1: Line 6 Pocket POD found
[  872.239807][   T83] snd_usb_pod 1-1:0.1: Line 6 Pocket POD now attached
[ 1146.328986][    C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 273s!
[ 1146.338206][    C0] Showing busy workqueues and worker pools:
[ 1146.344102][    C0] workqueue events_power_efficient: flags=0x80
[ 1146.350573][    C0]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 1146.358729][    C0]     pending: gc_worker
[ 1146.363107][    C0] workqueue mm_percpu_wq: flags=0x8
[ 1146.368292][    C0]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 1146.376116][    C0]     pending: vmstat_update
[ 1146.380793][    C0] workqueue kblockd: flags=0x18
[ 1146.386760][    C0]   pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
[ 1146.394581][    C0]     pending: blk_mq_timeout_work