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-7,10.128.15.196' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
executing program
syzkaller login: [  139.747610] device gre0 entered promiscuous mode
[  183.776037] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 43s!
[  183.784161] Showing busy workqueues and worker pools:
[  183.789363] workqueue events: flags=0x0
[  183.793391]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[  183.799556]     pending: vmstat_shepherd, cache_reap
[  183.804676] workqueue events_long: flags=0x0
[  183.809075]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
[  183.815200]     pending: gc_worker
[  183.818745] workqueue events_power_efficient: flags=0x80
[  183.824187]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[  183.830309]     pending: neigh_periodic_work, do_cache_clean
[  183.836120] workqueue mm_percpu_wq: flags=0x8
[  183.840610]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
[  183.846733]     pending: vmstat_update
[  183.850632] workqueue kblockd: flags=0x18
[  183.854771]   pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=3/256
[  183.861069]     pending: cfq_kick_queue, blk_timeout_work, blk_delay_work
[  183.868038] workqueue ipv6_addrconf: flags=0x40008
[  183.872955]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1
[  183.878903]     pending: addrconf_dad_work