executing program
syzkaller login: [  211.054426] device gre0 entered promiscuous mode
[  250.847039] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 39s!
[  250.847864] Showing busy workqueues and worker pools:
[  250.848286] workqueue events: flags=0x0
[  250.848644]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256
[  250.849272]     pending: cache_reap, check_corruption
[  250.849605] workqueue events_long: flags=0x0
[  250.849895]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  250.850302]     pending: gc_worker
[  250.850539] workqueue events_power_efficient: flags=0x80
[  250.850887]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256
[  250.851406]     pending: fb_flashcursor, neigh_periodic_work
[  250.851971] workqueue mm_percpu_wq: flags=0x8
[  250.852391]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
[  250.852918]     pending: vmstat_update
[  250.853326] workqueue ipv6_addrconf: flags=0x40008
[  250.853789]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1
[  250.854330]     pending: addrconf_dad_work
[  250.854883]     delayed: addrconf_verify_work