panic: runtime error: index out of range [0] with length 0 goroutine 2092332 [running]: panic({0x3e9d40, 0xc002e6f038}) GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000cee9d8 sp=0xc000cee918 pc=0x1234dba runtime.goPanicIndex(0x0, 0x0) GOROOT/src/runtime/panic.go:113 +0x7f fp=0xc000ceea18 sp=0xc000cee9d8 pc=0x1232c7f gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*lisafsDentry).getRemoteChildAndWalkPathLocked(0xc0003cc900, {0x82f958, 0xc006e92000}, 0xc002960000, 0xc000cef050) pkg/sentry/fsimpl/gofer/lisafs_dentry.go:265 +0x325 fp=0xc000ceeb48 sp=0xc000ceea18 pc=0x2079925 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*dentry).getRemoteChildAndWalkPathLocked(0xc0003cc900, {0x82f958, 0xc006e92000}, 0x0?, 0x142ed12?) pkg/sentry/fsimpl/gofer/dentry_impl.go:211 +0x97 fp=0xc000ceeba8 sp=0xc000ceeb48 pc=0x2053f57 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).getChildAndWalkPathLocked(0xc0003cc900?, {0x82f958, 0xc006e92000}, 0xc0003cc900, 0xc002960000, 0x2622ee0?) pkg/sentry/fsimpl/gofer/filesystem.go:265 +0x2b3 fp=0xc000ceec40 sp=0xc000ceeba8 pc=0x205b553 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).stepLocked(0xc0003cc998?, {0x82f958, 0xc006e92000}, 0xc002960000, 0xc0003cc900, 0x1, 0x24c6220?) pkg/sentry/fsimpl/gofer/filesystem.go:205 +0x313 fp=0xc000ceed28 sp=0xc000ceec40 pc=0x205a9b3 gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).walkParentDirLocked(0xc0003ada88?, {0x82f958, 0xc006e92000}, 0xc002960000, 0xc0003cc900, 0x7ff023ed0e00?) pkg/sentry/fsimpl/gofer/filesystem.go:313 +0x18c fp=0xc000ceedd8 sp=0xc000ceed28 pc=0x205b76c gvisor.dev/gvisor/pkg/sentry/fsimpl/gofer.(*filesystem).RenameAt(0xc0003ad9e0, {0x82f958, 0xc006e92000}, 0xc002960000, {0xc000489400?, 0xc0080b4c00?}, {0xc00914cd02, 0x5}, {0x0, 0x0}) pkg/sentry/fsimpl/gofer/filesystem.go:1213 +0x1d6 fp=0xc000cef160 sp=0xc000ceedd8 pc=0x2064ef6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).RenameAt(0xc006e928a0?, {0x82f958, 0xc006e92000}, 0xc0080b4c00?, 0xc000cef3b0, 0xc000cef400, 0xc000cef2d0) pkg/sentry/vfs/vfs.go:529 +0x5e3 fp=0xc000cef230 sp=0xc000cef160 pc=0x1777183 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.renameat(0xc006e92000, 0x126edc5?, 0x142ed12?, 0x126ed97?, 0x101a90518?, 0x0) pkg/sentry/syscalls/linux/sys_file.go:1579 +0x35d fp=0xc000cef4b0 sp=0xc000cef230 pc=0x1c7b5bd gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Rename(0xc006e92000?, {{0x200002c0}, {0x20000300}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:1535 +0x45 fp=0xc000cef508 sp=0xc000cef4b0 pc=0x1c7b105 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc006e92000, 0x52, {{0x200002c0}, {0x20000300}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x9b9 fp=0xc000cef9e8 sp=0xc000cef508 pc=0x1a90e39 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc006e92000, 0x0?, {{0x200002c0}, {0x20000300}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc000cefa80 sp=0xc000cef9e8 pc=0x1a92c1d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0046e8d00?, 0xc00a7360f0?, {{0x200002c0}, {0x20000300}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc000cefaf8 sp=0xc000cefa80 pc=0x1a925cf gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc006e92000) pkg/sentry/kernel/task_syscall.go:257 +0x4c5 fp=0xc000cefc20 sp=0xc000cefaf8 pc=0x1a92165 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc006e92000?, 0xc006e92000) pkg/sentry/kernel/task_run.go:256 +0x1a85 fp=0xc000cefec0 sp=0xc000cefc20 pc=0x1a7d145 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc006e92000, 0x9416) pkg/sentry/kernel/task_run.go:94 +0x3a2 fp=0xc000ceffb0 sp=0xc000cefec0 pc=0x1a7ad22 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000ceffe0 sp=0xc000ceffb0 pc=0x1a8e928 runtime.goexit() src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000ceffe8 sp=0xc000ceffe0 pc=0x126be41 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:377 +0x1ad