Warning: Permanently added '10.128.1.81' (ED25519) to the list of known hosts.
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syzkaller login: [   90.761732][    C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 36s!
[   90.764182][    C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 33s!
[   90.766476][    C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 36s!
[   90.768693][    C0] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 36s!
[   90.770815][    C0] Showing busy workqueues and worker pools:
[   90.772379][    C0] workqueue events: flags=0x0
[   90.773609][    C0]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
[   90.773635][    C0]     in-flight: 3322:request_firmware_work_func
[   90.773655][    C0]     pending: vmstat_shepherd, psi_avgs_work, ovs_dp_masks_rebalance
[   90.773687][    C0] workqueue events_long: flags=0x0
[   90.780551][    C0]   pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[   90.780577][    C0]     pending: defense_work_handler
[   90.780598][    C0] workqueue events_unbound: flags=0x2
[   90.785318][    C0]   pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 refcnt=3
[   90.785344][    C0]     pending: flush_memcg_stats_dwork
[   90.785364][    C0] workqueue events_power_efficient: flags=0x82
[   90.790127][    C0]   pwq 4: cpus=0-1 flags=0x4 nice=0 active=6/256 refcnt=8
[   90.790151][    C0]     pending: fb_flashcursor, neigh_periodic_work, do_cache_clean, neigh_periodic_work, reg_check_chans_work, gc_worker
[   90.790207][    C0] workqueue writeback: flags=0x4a
[   90.796576][    C0]   pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
[   90.796599][    C0]     pending: wb_workfn
[   90.796619][    C0] workqueue kblockd: flags=0x18
[   90.800742][    C0]   pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
[   90.800767][    C0]     pending: blk_mq_timeout_work
[   90.800818][    C0] workqueue dm_bufio_cache: flags=0x8
[   90.805530][    C0]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[   90.805557][    C0]     pending: work_fn
[   90.805582][    C0] workqueue krxrpcd: flags=0x0
[   90.809774][    C0]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
[   90.809798][    C0]     pending: rxrpc_peer_keepalive_worker
[   90.809824][    C0] pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=36s workers=3 idle: 13 7