panic: Decrementing non-positive ref count 0xc0002d8058, owned by tmpfs.inode goroutine 235 [running]: panic({0x298360?, 0xc0000492c0?}) GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc000bb0e78 sp=0xc000bb0dc8 pc=0x12bcd6c gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).DecRef(0xc0002d8058, 0xc000bb0ef0) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:126 +0x12c fp=0xc000bb0ee0 sp=0xc000bb0e78 pc=0x1a702ac gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).decRef(...) pkg/sentry/fsimpl/tmpfs/tmpfs.go:599 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).DecRef(0xc0002d8000, {0x7efef8, 0xc0009c6000}) pkg/sentry/fsimpl/tmpfs/tmpfs.go:457 +0x8b fp=0xc000bb0f20 sp=0xc000bb0ee0 pc=0x1a7a12b gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc0002d8000, {0x7efef8, 0xc0009c6000}) pkg/sentry/vfs/dentry.go:156 +0x5a fp=0xc000bb0f48 sp=0xc000bb0f20 pc=0x182feda gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00026ec58, {0x7efef8, 0xc0009c6000}) pkg/sentry/vfs/vfs.go:1030 +0x1e9 fp=0xc000bb1020 sp=0xc000bb0f48 pc=0x186bb29 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1() pkg/sentry/vfs/mount.go:826 +0x50 fp=0xc000bb1060 sp=0xc000bb1020 pc=0x184e870 runtime.deferreturn() GOROOT/src/runtime/panic.go:477 +0x31 fp=0xc000bb1098 sp=0xc000bb1060 pc=0x12bbeb1 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0001d93f0, {0x7efef8, 0xc0009c6000}) pkg/sentry/vfs/mount.go:839 +0x4ad fp=0xc000bb11d0 sp=0xc000bb1098 pc=0x184e78d gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0001d93f0, {0x7efef8, 0xc0009c6000}) pkg/sentry/vfs/mount.go:820 +0x79 fp=0xc000bb11f8 sp=0xc000bb11d0 pc=0x184e299 gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0001d93f0?, 0xc000181c00?}, {0x7efef8, 0xc0009c6000}) pkg/sentry/vfs/vfs.go:1086 +0x85 fp=0xc000bb1230 sp=0xc000bb11f8 pc=0x186bcc5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.(*taskPathOperation).Release(0xc000bb1428, 0xc000824ab0?) pkg/sentry/syscalls/linux/path.go:77 +0xa9 fp=0xc000bb1270 sp=0xc000bb1230 pc=0x1de83a9 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Umount2.func1() pkg/sentry/syscalls/linux/sys_mount.go:158 +0x45 fp=0xc000bb12a0 sp=0xc000bb1270 pc=0x1e18025 runtime.deferreturn() GOROOT/src/runtime/panic.go:477 +0x31 fp=0xc000bb12d8 sp=0xc000bb12a0 pc=0x12bbeb1 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Umount2(0xc0009c6000, 0xc000bb1598?, {{0x7f585dc979c0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_mount.go:164 +0x3fe fp=0xc000bb14d8 sp=0xc000bb12d8 pc=0x1e17cde gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0009c6000, 0xa6, {{0x7f585dc979c0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x8b5 fp=0xc000bb18f8 sp=0xc000bb14d8 pc=0x1c09b15 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0009c6000, 0x253b240?, {{0x7f585dc979c0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x6c fp=0xc000bb1998 sp=0xc000bb18f8 pc=0x1c0b94c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000bb1b58?, 0x2125e59?, {{0x7f585dc979c0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x87 fp=0xc000bb1a10 sp=0xc000bb1998 pc=0x1c0b307 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0009c6000) pkg/sentry/kernel/task_syscall.go:257 +0x4f0 fp=0xc000bb1b68 sp=0xc000bb1a10 pc=0x1c0ae90 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0009c6000?, 0xc0009c6000) pkg/sentry/kernel/task_run.go:269 +0x1e08 fp=0xc000bb1e70 sp=0xc000bb1b68 pc=0x1bf5708 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0009c6000, 0xc) pkg/sentry/kernel/task_run.go:98 +0x43b fp=0xc000bb1fb0 sp=0xc000bb1e70 pc=0x1bf301b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:391 +0x45 fp=0xc000bb1fe0 sp=0xc000bb1fb0 pc=0x1c078a5 runtime.goexit() src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000bb1fe8 sp=0xc000bb1fe0 pc=0x12f5d81 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 278 pkg/sentry/kernel/task_start.go:391 +0x1ae