panic: Decrementing non-positive ref count

goroutine 1448 [running]:
gvisor.googlesource.com/gvisor/pkg/refs.(*AtomicRefCount).DecRefWithDestructor(0xc4209f6180, 0xc4206ebac0)
	pkg/refs/refcounter.go:271 +0x162
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Shm).DecRef(0xc4209f6180)
	pkg/sentry/kernel/shm/shm.go:377 +0x48
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Shm).MarkDestroyed(0xc4209f6180)
	pkg/sentry/kernel/shm/shm.go:596 +0x7c
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Shmctl(0xc4208ed200, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc4206ebc10, 0x6d4894, ...)
	pkg/sentry/syscalls/linux/sys_shm.go:143 +0x323
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc4208ed200, 0x1f, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4321bb, 0xba1ec0, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x307
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc4208ed200, 0x1f, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:280 +0x62
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc4208ed200, 0x1f, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x870820, 0xc4209021e8)
	pkg/sentry/kernel/task_syscall.go:241 +0x91
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc4208ed200, 0x2, 0xc42014a900)
	pkg/sentry/kernel/task_syscall.go:216 +0x142
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc4208ed200, 0xc55020, 0x0)
	pkg/sentry/kernel/task_run.go:219 +0xe56
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc4208ed200, 0x44)
	pkg/sentry/kernel/task_run.go:95 +0x174
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:258 +0x100