syzbot

SIGSEGV: segmentation violation
PC=0x42d901 m=8 sigcode=1 addr=0x4

goroutine 0 gp=0xc0006021c0 m=8 mp=0xc000600008 [idle]:

goroutine 1 gp=0xc000002380 m=nil [runnable]:
runtime.deferreturn()
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/go/src/runtime/panic.go:579 +0x77 fp=0xc00001c300 sp=0xc00001c2f8 pc=0x47fd57
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*dispatcher).init(0xc0001a6780, 0xc0002984b0, 0x6)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/tcpip/transport/tcp/dispatcher.go:395 +0x233 fp=0xc00001c388 sp=0xc00001c300 pc=0x157cd33
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.newProtocol(0xc000581008, {0x263dc12, 0x4}, 0x0)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/tcpip/transport/tcp/protocol.go:599 +0x485 fp=0xc00001c558 sp=0xc00001c388 pc=0x15b3be5
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.NewProtocol(0xc000581008)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/tcpip/transport/tcp/protocol.go:538 +0x91 fp=0xc00001c598 sp=0xc00001c558 pc=0x15b3711
gvisor.dev/gvisor/pkg/tcpip/stack.New({{0xc00019a0f0, 0x3, 0x3}, {0xc0004206c0, 0x4, 0x4}, {0x28f8f00, 0xc0001ba000}, {0xc0001a41e8, {0x0, ...}, ...}, ...})
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/tcpip/stack/stack.go:437 +0x16dc fp=0xc00001d890 sp=0xc00001c598 pc=0x129cddc
gvisor.dev/gvisor/runsc/boot.newEmptySandboxNetworkStack({0x28f8f00, 0xc0001ba000}, 0x0)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/boot/loader.go:1634 +0x38a fp=0xc00001e678 sp=0xc00001d890 pc=0x20a26aa
gvisor.dev/gvisor/runsc/boot.newRootNetworkNamespace(0xc0001b3888, {0x28f8f00, 0xc0001ba000}, 0xc00002e008)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/boot/loader.go:1608 +0x1e9 fp=0xc00001e750 sp=0xc00001e678 pc=0x20a1889
gvisor.dev/gvisor/runsc/boot.New({{0x7ffc5d3e6f74, 0x25}, 0xc00039e090, 0xc0001b3888, 0x8, 0xc000038d98, {0xc000481c48, 0x1, 0x1}, 0xffffffffffffffff, ...})
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/boot/loader.go:595 +0x3436 fp=0xc00001f170 sp=0xc00001e750 pc=0x208e2d6
gvisor.dev/gvisor/runsc/cmd.(*Boot).Execute(0xc0004c2000, {0xc000040358?, 0x12?}, 0xc0003a2000, {0xc0003ac040, 0x2, 0x0?})
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/cmd/boot.go:556 +0x39ff fp=0xc00001fbf0 sp=0xc00001f170 pc=0x2245abf
github.com/google/subcommands.(*Commander).Execute(0xc00017e080, {0x28fb378, 0x384f3c0}, {0xc0003ac040, 0x2, 0x2})
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/.gocache/github.com/google/subcommands@v1.0.2-0.20190508160503-636abe8753b8/subcommands.go:200 +0x71b fp=0xc00001fce8 sp=0xc00001fbf0 pc=0x690f5b
github.com/google/subcommands.Execute(...)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/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/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/cli/cli.go:215 +0x279e fp=0xc00001ff30 sp=0xc00001fce8 pc=0xb4c8de
gvisor.dev/gvisor/runsc/cli/maincli.Main(...)
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/cli/maincli/maincli.go:28
main.main()
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/gopath/src/gvisor.dev/gvisor/runsc/main.go:31 +0xc5 fp=0xc00001ff50 sp=0xc00001ff30 pc=0x22d1ae5
runtime.main()
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/go/src/runtime/proc.go:285 +0x29d fp=0xc00001ffe0 sp=0xc00001ff50 pc=0x4840bd
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/a13edd57d9dad04937e1fb5843ea1532/sandbox/linux-sandbox/4/execroot/_main/go/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc00001ffe8 sp=0xc00001ffe0 pc=0x4c5b61