panic: Decrementing non-positive ref count 0xc0005ef5f0, owned by vfs.Filesystem

goroutine 51364 [running]:
panic({0x10f2ce0?, 0xc004386210?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc0020aba98 sp=0xc0020ab9e8 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc0005ef5f0, 0xc00370e3d0?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc0020abb00 sp=0xc0020aba98 pc=0x791474
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc0020abb80?, {0x1580618?, 0xc0037ba000?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc0020abb40 sp=0xc0020abb00 pc=0x790a55
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00021d6d8, {0x1580618, 0xc0037ba000})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc0020abbf0 sp=0xc0020abb40 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc0020abc18 sp=0xc0020abbf0 pc=0x79a8e8
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0032e1130, {0x1580618, 0xc0037ba000})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc0020abcb8 sp=0xc0020abc18 pc=0x79a842
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0032e1130, {0x1580618, 0xc0037ba000})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc0020abce0 sp=0xc0020abcb8 pc=0x79a585
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00021d6d8, {0x1580618, 0xc0037ba000})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc0020abd90 sp=0xc0020abce0 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc0022fb110, {0x1580618, 0xc0037ba000})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc0020abdc8 sp=0xc0020abd90 pc=0x7a1d99
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc0020abdf0 sp=0xc0020abdc8 pc=0x8486b8
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc0020abe68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc0020abe58 sp=0xc0020abdf0 pc=0x8481d5
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc0037ba000?, {0x1580618?, 0xc0037ba000?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc0020abe98 sp=0xc0020abe58 pc=0x84863c
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc003273800, 0xc0037ba000)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc0020abf48 sp=0xc0020abe98 pc=0xa074eb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0037ba000, 0x894)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc0020abfc0 sp=0xc0020abf48 pc=0xa13e62
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc0020abfe0 sp=0xc0020abfc0 pc=0xa20e85
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0020abfe8 sp=0xc0020abfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 51214
	pkg/sentry/kernel/task_start.go:391 +0xf8