panic: Decrementing non-positive ref count

goroutine 103 [running]:
gvisor.googlesource.com/gvisor/pkg/refs.(*AtomicRefCount).DecRefWithDestructor(0xc4201029c0, 0xc4200a8ab8)
	pkg/refs/refcounter.go:267 +0x162
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Shm).DecRef(0xc4201029c0)
	pkg/sentry/kernel/shm/shm.go:373 +0x48
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Shm).MarkDestroyed(0xc4201029c0)
	pkg/sentry/kernel/shm/shm.go:592 +0x7c
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Shmctl(0xc42014ad00, 0x20, 0x0, 0x438d59, 0x0, 0x0, 0x0, 0x428854, 0xbdd358, 0xc4200a8c08, ...)
	pkg/sentry/syscalls/linux/sys_shm.go:143 +0x323
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc42014ad00, 0x1f, 0x20, 0x0, 0x438d59, 0x0, 0x0, 0x0, 0xc42021e340, 0xbb4e80, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x307
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc42014ad00, 0x1f, 0x20, 0x0, 0x438d59, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:278 +0x62
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc42014ad00, 0x1f, 0x20, 0x0, 0x438d59, 0x0, 0x0, 0x0, 0xc67980, 0xc4200a8e00)
	pkg/sentry/kernel/task_syscall.go:241 +0x91
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc42014ad00, 0x2, 0xc42020e5a0)
	pkg/sentry/kernel/task_syscall.go:216 +0x10c
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc42014ad00, 0xc67980, 0x0)
	pkg/sentry/kernel/task_run.go:217 +0xed8
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc42014ad00, 0x9)
	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:251 +0x100