panic: runtime error: makeslice: len out of range goroutine 2363396 [running]: gvisor.dev/gvisor/pkg/tcpip/buffer.NewView(...) pkg/tcpip/buffer/view.go:24 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*readerPayload).Payload(0xc0024aa940, 0x8000000000004, 0xc000439330, 0x432836, 0xc000439330, 0xc00239fe20) pkg/sentry/socket/netstack/netstack.go:568 +0x55 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*readerPayload).FullPayload(0xc0024aa940, 0x0, 0x0, 0x0, 0x10) pkg/sentry/socket/netstack/netstack.go:560 +0x34 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).write(0xc00239fd40, 0xf12000, 0xc0024aa940, 0x0, 0x10000, 0x0, 0x0, 0x0) pkg/tcpip/transport/udp/endpoint.go:470 +0x3b2 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).Write(0xc00239fd40, 0xf12000, 0xc0024aa940, 0x0, 0x8000000010000, 0x0, 0x0, 0xf0e1a0) pkg/tcpip/transport/udp/endpoint.go:360 +0x68 DIAGNOSIS: I0319 04:13:41.222238 59652 main.go:305] *************************** I0319 04:13:41.222310 59652 main.go:306] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=none debug -stacks --ps ci-gvisor-main-3] I0319 04:13:41.222353 59652 main.go:307] Version release-20200219.0-192-gfc16e64396cf I0319 04:13:41.222380 59652 main.go:308] PID: 59652 I0319 04:13:41.222410 59652 main.go:309] UID: 0, GID: 0 I0319 04:13:41.222436 59652 main.go:310] Configuration: I0319 04:13:41.222470 59652 main.go:311] RootDir: /syzkaller/managers/main/workdir/gvisor_root I0319 04:13:41.222516 59652 main.go:312] Platform: ptrace I0319 04:13:41.222542 59652 main.go:313] FileAccess: shared, overlay: false I0319 04:13:41.222583 59652 main.go:314] Network: none, logging: false I0319 04:13:41.222618 59652 main.go:315] Strace: false, max size: 1024, syscalls: [] I0319 04:13:41.222647 59652 main.go:316] *************************** D0319 04:13:41.232977 59652 container.go:159] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-3" D0319 04:13:41.264125 59652 container.go:592] Signal container "ci-gvisor-main-3": signal 0 D0319 04:13:41.264179 59652 sandbox.go:814] Signal sandbox "ci-gvisor-main-3" D0319 04:13:41.266101 59652 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-3" D0319 04:13:41.271542 59652 urpc.go:534] urpc: successfully marshalled 96 bytes. I0319 04:13:42.202410 59652 debug.go:128] Found sandbox "ci-gvisor-main-3", PID: 5279 I0319 04:13:42.204428 59652 debug.go:137] Retrieving sandbox stacks D0319 04:13:42.206789 59652 sandbox.go:932] Stacks sandbox "ci-gvisor-main-3" D0319 04:13:42.206826 59652 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-3" W0319 04:13:42.206880 59652 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 5279: connection refused retrieving stacks: connecting to control server at PID 5279: connection refused W0319 04:13:42.207002 59652 main.go:338] Failure to execute command, err: 1