INIT: Entering runlevel: 2

[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[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-kasan-gce-386-3,10.128.0.13' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [  172.748135] device gre0 entered promiscuous mode
executing program
executing program
[  177.764587] device gre0 entered promiscuous mode
[  177.780530] device gre0 entered promiscuous mode
[  215.007046] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 37s!
[  215.015204] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 36s!
[  215.023275] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 36s!
[  215.031519] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 32s!
[  215.039154] Showing busy workqueues and worker pools:
[  215.044351] workqueue events: flags=0x0
[  215.048391]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256
[  215.054586]     pending: pcpu_balance_workfn, cache_reap, check_corruption
[  215.061622]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[  215.067765]     pending: vmstat_shepherd, cache_reap
[  215.072882] workqueue events_long: flags=0x0
[  215.077284]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
[  215.083419]     pending: gc_worker
[  215.086964] workqueue events_power_efficient: flags=0x80
[  215.092404]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256
[  215.098542]     pending: neigh_periodic_work, do_cache_clean, neigh_periodic_work
[  215.106184] workqueue mm_percpu_wq: flags=0x8
[  215.110676]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  215.116812]     pending: vmstat_update
[  215.120705]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
[  215.126840]     pending: vmstat_update
[  215.130734] workqueue writeback: flags=0x4e
[  215.135083]   pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256
[  215.140832]     pending: wb_workfn
[  215.144381] workqueue kblockd: flags=0x18
[  215.148520]   pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256
[  215.154833]     pending: blk_timeout_work
[  215.159022] workqueue ipv6_addrconf: flags=0x40008
[  215.163941]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1
[  215.169905]     pending: addrconf_dad_work
[  215.174141]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1
[  215.180102]     pending: addrconf_dad_work