panic: nested locking: tmpfs.filesystemRWMutex: goroutine 4217 [running]: gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*filesystemRWMutex).Lock(0xc0018c22d8) bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/tmpfs/filesystem_mutex.go:31 +0x4d gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*filesystem).doCreateAt(0xc0018c2270, {0x2061a40, 0xc0013ed208}, 0xc000f23688, 0x1, 0xc00210f3f0) pkg/sentry/fsimpl/tmpfs/filesystem.go:171 +0x92 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*filesystem).MkdirAt(0xc0018c2270, {0x2061a40, 0xc0013ed208}, 0xc000f23688, {0x12?, 0x0?}) pkg/sentry/fsimpl/tmpfs/filesystem.go:301 +0x105 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).MkdirAt(0xc0002c71e0, {0x2061a40, 0xc0013ed208}, 0xc0017bd500, 0xc00210f5b0, 0xc00210f534) pkg/sentry/vfs/vfs.go:372 +0x35f gvisor.dev/gvisor/pkg/sentry/syscalls/linux.mkdirat(0xc0013ed208, 0xffffff9c, 0x20000080, 0x1ff) pkg/sentry/syscalls/linux/sys_file.go:950 +0x39d gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mkdirat(0xc0013ed208, 0x9b9754?, {{0xffffff9c}, {0x20000080}, {0x1ff}, {0x200001c0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:937 +0xa5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0013ed208, 0x102, {{0xffffff9c}, {0x20000080}, {0x1ff}, {0x200001c0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb9f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0013ed208, 0x102, {{0xffffff9c}, {0x20000080}, {0x1ff}, {0x200001c0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0013ed208, 0x102, {{0xffffff9c}, {0x20000080}, {0x1ff}, {0x200001c0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0013ed208) pkg/sentry/kernel/task_syscall.go:258 +0x54a gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0013ed208?, 0xc0013ed208) pkg/sentry/kernel/task_run.go:269 +0x2295 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0013ed208, 0x276) pkg/sentry/kernel/task_run.go:97 +0x41b created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 4216 pkg/sentry/kernel/task_start.go:400 +0x185