W0202 07:46:40.120488 90669 error.go:48] FATAL ERROR: executing processes for container: executing command "/syz-fuzzer -executor=/syz-executor -name=vm-1 -arch=amd64 -manager=stdin -sandbox=none -procs=1 -cover=true -debug=false -test=false -optional=slowdown=10" in sandbox: urpc method "containerManager.ExecuteAsync" failed: EOF executing processes for container: executing command "/syz-fuzzer -executor=/syz-executor -name=vm-1 -arch=amd64 -manager=stdin -sandbox=none -procs=1 -cover=true -debug=false -test=false -optional=slowdown=10" in sandbox: urpc method "containerManager.ExecuteAsync" failed: EOF W0202 07:46:40.120764 90669 main.go:245] Failure to execute command, err: 1 panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x10bd3ac] goroutine 572 [running]: panic(0x18f4be0, 0x2478280) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc00091a9d8 sp=0xc00091a920 pc=0x439990 runtime.panicmem(...) GOROOT/src/runtime/panic.go:212 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:720 +0x413 fp=0xc00091aa08 sp=0xc00091a9d8 pc=0x451e53 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Kernel(...) pkg/sentry/kernel/task.go:660 gvisor.dev/gvisor/pkg/sentry/socket/unix.(*SocketVFS2).DecRef.func1() pkg/sentry/socket/unix/unix_vfs2.go:112 +0xac fp=0xc00091aa78 sp=0xc00091aa08 pc=0x10bd3ac gvisor.dev/gvisor/pkg/sentry/socket/unix.(*socketVFS2Refs).DecRef(0xc0005fe130, 0xc00091ab00) bazel-out/k8-fastbuild-ST-d17813c235ce/bin/pkg/sentry/socket/unix/socket_vfs2_refs.go:145 +0xf1 fp=0xc00091aae8 sp=0xc00091aa78 pc=0x10af8f1 gvisor.dev/gvisor/pkg/sentry/socket/unix.(*SocketVFS2).DecRef(0xc0005fe0c0, 0x1c3d9c0, 0xc0002ffd00) pkg/sentry/socket/unix/unix_vfs2.go:109 +0x97 fp=0xc00091ab30 sp=0xc00091aae8 pc=0x10b76f7 gvisor.dev/gvisor/pkg/sentry/socket/unix.(*SocketVFS2).Release(0xc0005fe0c0, 0x1c3d9c0, 0xc0002ffd00) pkg/sentry/socket/unix/unix_vfs2.go:126 +0x67 fp=0xc00091ab58 sp=0xc00091ab30 pc=0x10b7787 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:210 +0x413 fp=0xc00091ac70 sp=0xc00091ab58 pc=0xa91d73 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc0005fe0c0, 0xc00091acf8) bazel-out/k8-fastbuild-ST-d17813c235ce/bin/pkg/sentry/vfs/file_description_refs.go:145 +0xf1 fp=0xc00091ace0 sp=0xc00091ac70 pc=0xa5b391 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc0005fe0c0, 0x1c3d9c0, 0xc0002ffd00) pkg/sentry/vfs/file_description.go:170 +0x93 fp=0xc00091ad28 sp=0xc00091ace0 pc=0xa50bd3 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).dropVFS2(0xc0004e0bd0, 0x1c3d9c0, 0xc0002ffd00, 0xc0005fe0c0) pkg/sentry/kernel/fd_table.go:191 +0xf0 fp=0xc00091ada8 sp=0xc00091ad28 pc=0xdc9290 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).RemoveIf(0xc0004e0bd0, 0x1c3d9c0, 0xc0002ffd00, 0x1ada4c0) pkg/sentry/kernel/fd_table.go:853 +0x2da fp=0xc00091ae78 sp=0xc00091ada8 pc=0xdccc3a gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef.func1() pkg/sentry/kernel/fd_table.go:209 +0x9a fp=0xc00091aec8 sp=0xc00091ae78 pc=0xe7099a gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTableRefs).DecRef(0xc0004e0bd0, 0xc00091af50) bazel-out/k8-fastbuild-ST-d17813c235ce/bin/pkg/sentry/kernel/fd_table_refs.go:145 +0xf1 fp=0xc00091af38 sp=0xc00091aec8 pc=0xdcd551 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef(0xc0004e0bd0, 0x1c3d9c0, 0xc0002ffd00) pkg/sentry/kernel/fd_table.go:207 +0x93 fp=0xc00091af80 sp=0xc00091af38 pc=0xdc95d3 gvisor.dev/gvisor/pkg/sentry/control.(*Proc).execAsync(0xc00091b6e8, 0xc0005fe000, 0x0, 0xc000000000, 0x0, 0x0, 0x1c0ee80, 0xc0004342f0) pkg/sentry/control/proc.go:257 +0xee4 fp=0xc00091b408 sp=0xc00091af80 pc=0x118fe84 gvisor.dev/gvisor/pkg/sentry/control.ExecAsync(0xc0005eb6e8, 0xc0005fe000, 0xc000000001, 0xc000000000, 0xc0005cc870, 0x1, 0x1, 0xc0002ffcc0) pkg/sentry/control/proc.go:146 +0x65 fp=0xc00091b488 sp=0xc00091b408 pc=0x118eee5 gvisor.dev/gvisor/runsc/boot.(*Loader).executeAsync(0xc00039be40, 0xc0005fe000, 0xc000000000, 0x0, 0x0) runsc/boot/loader.go:972 +0x845 fp=0xc00091b848 sp=0xc00091b488 pc=0x1648865 gvisor.dev/gvisor/runsc/boot.(*containerManager).ExecuteAsync(0xc0003cc420, 0xc0005fe000, 0xc0005cadac, 0x0, 0x0) runsc/boot/controller.go:321 +0x168 fp=0xc00091b8c0 sp=0xc00091b848 pc=0x162e1a8 runtime.call64(0xc0004e0ae0, 0xc000010b28, 0xc0004e0b70, 0x1800000028) src/runtime/asm_amd64.s:541 +0x3e fp=0xc00091b910 sp=0xc00091b8c0 pc=0x47355e reflect.Value.call(0xc0004b38c0, 0xc000010b28, 0x13, 0x1a87c62, 0x4, 0xc0005ebe60, 0x3, 0x3, 0x1c49901, 0xc0005cadac, ...) GOROOT/src/reflect/value.go:475 +0x9aa fp=0xc00091bb50 sp=0xc00091b910 pc=0x50220a reflect.Value.Call(0xc0004b38c0, 0xc000010b28, 0x13, 0xc0005ebe60, 0x3, 0x3, 0x0, 0xc0003cc420, 0x16) GOROOT/src/reflect/value.go:336 +0xd9 fp=0xc00091bbe8 sp=0xc00091bb50 pc=0x501539 gvisor.dev/gvisor/pkg/urpc.(*Server).handleOne(0xc00016d9a0, 0xc00035c540, 0x0, 0x0) pkg/urpc/urpc.go:383 +0x76f fp=0xc00091bf08 sp=0xc00091bbe8 pc=0x111a08f gvisor.dev/gvisor/pkg/urpc.(*Server).handleRegistered(0xc00016d9a0, 0xc00035c540, 0x1000000000004, 0xc000661140) pkg/urpc/urpc.go:499 +0x77 fp=0xc00091bf48 sp=0xc00091bf08 pc=0x111b637 gvisor.dev/gvisor/pkg/urpc.(*Server).StartHandling.func1(0xc00016d9a0, 0xc00035c540) pkg/urpc/urpc.go:523 +0xa8 fp=0xc00091bfd0 sp=0xc00091bf48 pc=0x111e0e8 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc00091bfd8 sp=0xc00091bfd0 pc=0x474ee1 created by gvisor.dev/gvisor/pkg/urpc.(*Server).StartHandling pkg/urpc/urpc.go:520 +0x8b