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-8,10.128.0.48' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz4.accept_dad = 0
net.ipv6.conf.syz7.accept_dad = 0
net.ipv6.conf.syz2.accept_dad = 0
net.ipv6.conf.syz5.accept_dad = 0
net.ipv6.conf.syz6.accept_dad = 0
net.ipv6.conf.syz3.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
net.ipv6.conf.syz1.accept_dad = 0
net.ipv6.conf.syz7.router_solicitations = 0
net.ipv6.conf.syz4.router_solicitations = 0
net.ipv6.conf.syz2.router_solicitations = 0
net.ipv6.conf.syz5.router_solicitations = 0
net.ipv6.conf.syz6.router_solicitations = 0
net.ipv6.conf.syz3.router_solicitations = 0
net.ipv6.conf.syz1.router_solicitations = 0
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [  127.730645] device gre0 entered promiscuous mode
[  183.775038] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 55s!
[  183.783232] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 55s!
[  183.791328] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 51s!
[  183.798961] Showing busy workqueues and worker pools:
[  183.804157] workqueue events: flags=0x0
[  183.808196]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  183.814404]     pending: cache_reap
[  183.818043]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[  183.824182]     pending: vmstat_shepherd, cache_reap
[  183.829296] workqueue events_long: flags=0x0
[  183.833693]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  183.839833]     pending: gc_worker
[  183.843378] workqueue events_power_efficient: flags=0x80
[  183.848823]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256
[  183.854964]     pending: neigh_periodic_work, neigh_periodic_work, do_cache_clean
[  183.862602] workqueue mm_percpu_wq: flags=0x8
[  183.867088]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  183.873225]     pending: vmstat_update
[  183.877115]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
[  183.883253]     pending: vmstat_update
[  183.887143] workqueue writeback: flags=0x4e
[  183.891494]   pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256
[  183.897247]     pending: wb_workfn
[  183.900791] workqueue kblockd: flags=0x18
[  183.904928]   pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256
[  183.911238]     pending: blk_timeout_work
[  183.915409] workqueue ipv6_addrconf: flags=0x40008
[  183.920325]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1
[  183.926286]     pending: addrconf_dad_work
[  183.930506]     delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work
[  183.947994]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1
[  183.953962]     pending: addrconf_dad_work
[  183.958180]     delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work