panic: unlock of an unknow lock

goroutine 2008 [running]:
panic({0x1718c00, 0x1b8e8c8})
	GOROOT/src/runtime/panic.go:1147 +0x3a8 fp=0xc0014710f8 sp=0xc001471038 pc=0x437c88
gvisor.dev/gvisor/pkg/sync/locking.DelGLock(0xc000240280, 0x1)
	pkg/sync/locking/lockdep.go:129 +0x16b fp=0xc001471158 sp=0xc0014710f8 pc=0x92b56b
gvisor.dev/gvisor/pkg/sentry/socket/unix/transport.(*endpointMutex).NestedUnlock(0xc001126008)
	bazel-out/k8-fastbuild-ST-a4501ad48192/bin/pkg/sentry/socket/unix/transport/endpoint_mutex.go:39 +0x45 fp=0xc001471178 sp=0xc001471158 pc=0x937725
gvisor.dev/gvisor/pkg/sentry/socket/unix/transport.(*connectionedEndpoint).BidirectionalConnect(0xc001126000, {0x1beb110, 0xc000dfb500}, {0x1be6558, 0xc00035a160}, 0xc0007d68a0)
	pkg/sentry/socket/unix/transport/connectioned.go:372 +0xdc8 fp=0xc001471288 sp=0xc001471178 pc=0x933188
gvisor.dev/gvisor/pkg/sentry/socket/unix/transport.(*connectionedEndpoint).Connect(0xc00035a160, {0x1beb110, 0xc000dfb500}, {0x7fc95831bfd0, 0xc001126000})
	pkg/sentry/socket/unix/transport/connectioned.go:408 +0xbc fp=0xc0014712e0 sp=0xc001471288 pc=0x93353c
gvisor.dev/gvisor/pkg/sentry/socket/unix.(*socketOpsCommon).Connect(0xc000352df8, 0xc000dfb500, {0xc00081c000, 0x6e, 0x6e}, 0x65)
	pkg/sentry/socket/unix/unix.go:443 +0x17d fp=0xc0014713b8 sp=0xc0014712e0 pc=0xfa84fd
gvisor.dev/gvisor/pkg/sentry/socket/unix.(*SocketVFS2).Connect(0xc000352d80, 0x1bf8578, {0xc00081c000, 0x6e, 0x6e}, 0x10)
	<autogenerated>:1 +0x7b fp=0xc001471410 sp=0xc0014713b8 pc=0xfb1adb
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Connect(0xc000dfb500, {{0x3}, {0x20000280}, {0x6e}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/socket.go:280 +0x211 fp=0xc001471548 sp=0xc001471410 pc=0x11bc091
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000dfb500, 0x2a, {{0x3}, {0x20000280}, {0x6e}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9d8 fp=0xc001471a90 sp=0xc001471548 pc=0xd43858
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000dfb500, 0x46f779, {{0x3}, {0x20000280}, {0x6e}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x6a fp=0xc001471b18 sp=0xc001471a90 pc=0xd4544a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00092ab40, 0x46fc2c, {{0x3}, {0x20000280}, {0x6e}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc001471b90 sp=0xc001471b18 pc=0xd44ecf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000dfb500)
	pkg/sentry/kernel/task_syscall.go:257 +0x3e7 fp=0xc001471c98 sp=0xc001471b90 pc=0xd44ae7
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000dfb500, 0xc000dfb500)
	pkg/sentry/kernel/task_run.go:247 +0x16b8 fp=0xc001471ed0 sp=0xc001471c98 pc=0xd2fe18
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000dfb500)
	pkg/sentry/kernel/task_run.go:90 +0x35b fp=0xc001471fc0 sp=0xc001471ed0 pc=0xd2dd5b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start·dwrap·239()
	pkg/sentry/kernel/task_start.go:364 +0x3a fp=0xc001471fe0 sp=0xc001471fc0 pc=0xd4137a
runtime.goexit()
	src/runtime/asm_amd64.s:1581 +0x1 fp=0xc001471fe8 sp=0xc001471fe0 pc=0x46e001
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:364 +0x191