executing program
syzkaller login: [  212.865143] device gre0 entered promiscuous mode
[  250.847065] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 37s!
[  250.847739] Showing busy workqueues and worker pools:
[  250.848202] workqueue events: flags=0x0
[  250.848520]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  250.849094]     pending: cache_reap
[  250.849387] workqueue mm_percpu_wq: flags=0x8
[  250.849693]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  250.850141]     pending: vmstat_update
[  250.850459] workqueue ipv6_addrconf: flags=0x40008
[  250.852623]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1
[  250.853175]     pending: addrconf_dad_work