SIGSEGV: segmentation violation
PC=0x42d901 m=10 sigcode=1 addr=0x4

goroutine 0 gp=0xc0001828c0 m=10 mp=0xc000180808 [idle]:

goroutine 1 gp=0xc000002380 m=nil [runnable]:
runtime.newobject(0x246a680?)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/go/src/runtime/malloc.go:1746 +0x35 fp=0xc0005f2570 sp=0xc0005f2568 pc=0x456a15
gvisor.dev/gvisor/pkg/tcpip/transport/udp.NewProtocol(0xc000181008)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/tcpip/transport/udp/protocol.go:137 +0x85 fp=0xc0005f2598 sp=0xc0005f2570 pc=0x16ccf85
gvisor.dev/gvisor/pkg/tcpip/stack.New({{0xc0003823d8, 0x3, 0x3}, {0xc00037bc40, 0x4, 0x4}, {0x28f8f00, 0xc00031dd50}, {0xc0000142d8, {0x0, ...}, ...}, ...})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/tcpip/stack/stack.go:437 +0x16dc fp=0xc0005f3890 sp=0xc0005f2598 pc=0x129cddc
gvisor.dev/gvisor/runsc/boot.newEmptySandboxNetworkStack({0x28f8f00, 0xc00031dd50}, 0x0)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/boot/loader.go:1634 +0x38a fp=0xc0005f4678 sp=0xc0005f3890 pc=0x20a26aa
gvisor.dev/gvisor/runsc/boot.newRootNetworkNamespace(0xc0005b0388, {0x28f8f00, 0xc00031dd50}, 0xc00001e008)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/boot/loader.go:1608 +0x1e9 fp=0xc0005f4750 sp=0xc0005f4678 pc=0x20a1889
gvisor.dev/gvisor/runsc/boot.New({{0x7ffc532bbfa0, 0x24}, 0xc00045e360, 0xc0005b0388, 0x8, 0xc0000271e8, {0xc000015048, 0x1, 0x1}, 0xffffffffffffffff, ...})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/boot/loader.go:595 +0x3436 fp=0xc0005f5170 sp=0xc0005f4750 pc=0x208e2d6
gvisor.dev/gvisor/runsc/cmd.(*Boot).Execute(0xc000269c20, {0xc0000403a8?, 0x13?}, 0xc00031d960, {0xc00037a6c0, 0x2, 0x0?})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/cmd/boot.go:556 +0x39ff fp=0xc0005f5bf0 sp=0xc0005f5170 pc=0x2245abf
github.com/google/subcommands.(*Commander).Execute(0xc000218080, {0x28fb378, 0x384f3c0}, {0xc00037a6c0, 0x2, 0x2})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/.gocache/github.com/google/subcommands@v1.0.2-0.20190508160503-636abe8753b8/subcommands.go:200 +0x71b fp=0xc0005f5ce8 sp=0xc0005f5bf0 pc=0x690f5b
github.com/google/subcommands.Execute(...)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/.gocache/github.com/google/subcommands@v1.0.2-0.20190508160503-636abe8753b8/subcommands.go:481
gvisor.dev/gvisor/runsc/cli.Run(0x26b3440)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/cli/cli.go:215 +0x279e fp=0xc0005f5f30 sp=0xc0005f5ce8 pc=0xb4c8de
gvisor.dev/gvisor/runsc/cli/maincli.Main(...)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/cli/maincli/maincli.go:28
main.main()
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/main.go:31 +0xc5 fp=0xc0005f5f50 sp=0xc0005f5f30 pc=0x22d1ae5
runtime.main()
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/go/src/runtime/proc.go:285 +0x29d fp=0xc0005f5fe0 sp=0xc0005f5f50 pc=0x4840bd
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/4/execroot/_main/go/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc0005f5fe8 sp=0xc0005f5fe0 pc=0x4c5b61