fatal error: thread exhaustion
DIAGNOSIS:
I0429 09:27:50.356627 47611 x:0] ***************************
I0429 09:27:50.356684 47611 x:0] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -network=sandbox debug -stacks ci-gvisor-kvm-direct-sandbox-0]
I0429 09:27:50.356697 47611 x:0] Version release-20190304.1-153-g43dff57b878e
I0429 09:27:50.356702 47611 x:0] PID: 47611
I0429 09:27:50.356709 47611 x:0] UID: 0, GID: 0
I0429 09:27:50.356712 47611 x:0] Configuration:
I0429 09:27:50.356716 47611 x:0] RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0429 09:27:50.356720 47611 x:0] Platform: kvm
I0429 09:27:50.356733 47611 x:0] FileAccess: exclusive, overlay: false
I0429 09:27:50.356744 47611 x:0] Network: sandbox, logging: false
I0429 09:27:50.356750 47611 x:0] Strace: false, max size: 1024, syscalls: []
I0429 09:27:50.356754 47611 x:0] ***************************
D0429 09:27:50.356773 47611 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-0"
D0429 09:27:50.358469 47611 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-0": signal 0
D0429 09:27:50.358496 47611 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0429 09:27:50.358501 47611 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0429 09:27:50.358630 47611 x:0] urpc: successfully marshalled 110 bytes.
I0429 09:28:08.221374 47611 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-0", PID: 63813
I0429 09:28:08.221398 47611 x:0] Retrieving sandbox stacks
D0429 09:28:08.221404 47611 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0429 09:28:08.221409 47611 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
W0429 09:28:08.221441 47611 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 63813: connection refused
retrieving stacks: connecting to control server at PID 63813: connection refused