panic: runtime error: index out of range [0] with length 0 goroutine 805809 [running]: panic({0x121bf20, 0xc0041a5740}) GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc00085d208 sp=0xc00085d148 pc=0x43763a runtime.goPanicIndex(0x0, 0x0) GOROOT/src/runtime/panic.go:113 +0x7f fp=0xc00085d248 sp=0xc00085d208 pc=0x4354ff gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*lisafsDentry).getRemoteChildAndWalkPathLocked(0xc0003a6900, {0x15638b8, 0xc008c06000}, 0x0?, 0xc0032e9530) pkg/sentry/fsimpl/gofer/lisafs_dentry.go:265 +0x351 fp=0xc00085d330 sp=0xc00085d248 pc=0xd8b351 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*dentry).getRemoteChildAndWalkPathLocked(0xc0003a6900?, {0x15638b8?, 0xc008c06000?}, 0xd8375c?, 0x8913c997?) pkg/sentry/fsimpl/gofer/dentry_impl.go:211 +0x65 fp=0xc00085d368 sp=0xc00085d330 pc=0xd6c965 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).getChildAndWalkPathLocked(0x3f7ff38a1000?, {0x15638b8, 0xc008c06000}, 0xc00085d460?, 0xc001bac000, 0xc00085d450?) pkg/sentry/fsimpl/gofer/filesystem.go:265 +0xc6 fp=0xc00085d3b0 sp=0xc00085d368 pc=0xd720c6 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).stepLocked(0x8df5b23a7?, {0x15638b8, 0xc008c06000}, 0xc001bac000, 0xc0003a6900, 0x1, 0xc0032e9530?) pkg/sentry/fsimpl/gofer/filesystem.go:205 +0x287 fp=0xc00085d408 sp=0xc00085d3b0 pc=0xd71a27 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).walkParentDirLocked(0x3f7ff38a1180?, {0x15638b8, 0xc008c06000}, 0xc001bac000, 0xc0003a6900, 0x0?) pkg/sentry/fsimpl/gofer/filesystem.go:313 +0x11d fp=0xc00085d488 sp=0xc00085d408 pc=0xd723fd gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).doCreateAt(0xc00052a5a0, {0x15638b8, 0xc008c06000}, 0xc001bac000, 0x1, 0xc00085d6f8, 0xc00085d6d8) pkg/sentry/fsimpl/gofer/filesystem.go:371 +0x1ae fp=0xc00085d6a0 sp=0xc00085d488 pc=0xd72a6e gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).MkdirAt(0xc001bac000?, {0x15638b8?, 0xc008c06000?}, 0x154aa00?, {0xd478?, 0x7?}) pkg/sentry/fsimpl/gofer/filesystem.go:757 +0xdd fp=0xc00085d738 sp=0xc00085d6a0 pc=0xd7609d gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).MkdirAt(0xc005200280?, {0x15638b8, 0xc008c06000}, 0xc006b0d000?, 0xc008410c00?, 0xc00085d824) pkg/sentry/vfs/vfs.go:335 +0x171 fp=0xc00085d790 sp=0xc00085d738 pc=0x77d051 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.mkdirat(0xc008c06000, 0xdd0cdf8c?, 0x0?, 0x1ff) pkg/sentry/syscalls/linux/sys_file.go:925 +0x28b fp=0xc00085d918 sp=0xc00085d790 pc=0xaf22cb gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mkdirat(0xc008c06000?, {{0xffffff9c}, {0x20000180}, {0x1ff}, {0x20000140}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:912 +0x50 fp=0xc00085d948 sp=0xc00085d918 pc=0xaf2010 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc008c06000, 0x102, {{0xffffff9c}, {0x20000180}, {0x1ff}, {0x20000140}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00085dc88 sp=0xc00085d948 pc=0x9a95eb gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc008c06000, 0x0?, {{0xffffff9c}, {0x20000180}, {0x1ff}, {0x20000140}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc00085dce8 sp=0xc00085dc88 pc=0x9aabd4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000536310?, 0xc00085de30?, {{0xffffff9c}, {0x20000180}, {0x1ff}, {0x20000140}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc00085dd48 sp=0xc00085dce8 pc=0x9aa7c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002783290?) pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc00085de40 sp=0xc00085dd48 pc=0x9aa48c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0089e6a00?, 0xc008c06000) pkg/sentry/kernel/task_run.go:256 +0x1245 fp=0xc00085df60 sp=0xc00085de40 pc=0x99c345 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc008c06000, 0x2288) pkg/sentry/kernel/task_run.go:94 +0x229 fp=0xc00085dfc0 sp=0xc00085df60 pc=0x99aa69 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc00085dfe0 sp=0xc00085dfc0 pc=0x9a7a6a runtime.goexit() src/runtime/asm_amd64.s:1594 +0x1 fp=0xc00085dfe8 sp=0xc00085dfe0 pc=0x46c521 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:377 +0x105