panic: unable to find an index for ID: 0 goroutine 56323 [running]: panic(0x105cd00, 0xc001885cf0) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc001ee5928 sp=0xc001ee5860 pc=0x437c65 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc0005e64e0, 0xc000000000, 0xc00082f080, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:222 +0x185 fp=0xc001ee5998 sp=0xc001ee5928 pc=0x85e5a5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc00196e000, 0xc000000000, 0x0, 0x0) pkg/sentry/syscalls/linux/sys_sem.go:243 +0x69 fp=0xc001ee59d8 sp=0xc001ee5998 pc=0xa38aa9 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc00196e000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_sem.go:160 +0x2dc fp=0xc001ee5b00 sp=0xc001ee59d8 pc=0xa3817c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00196e000, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xe31030, 0x124e7a0, ...) pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc001ee5c60 sp=0xc001ee5b00 pc=0x9bf3fc gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00196e000, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc001ee5ce8 sp=0xc001ee5c60 pc=0x9c0586 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00196e000, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc001ee5d48 sp=0xc001ee5ce8 pc=0x9c0178 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00196e000, 0x2, 0xc00196e000) pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc001ee5e18 sp=0xc001ee5d48 pc=0x9bfb1c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00196e000, 0x13b4ae0, 0x0) pkg/sentry/kernel/task_run.go:282 +0xca5 fp=0xc001ee5f60 sp=0xc001ee5e18 pc=0x9b46e5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00196e000, 0x40e) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc001ee5fd0 sp=0xc001ee5f60 pc=0x9b334f runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc001ee5fd8 sp=0xc001ee5fd0 pc=0x472821 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:328 +0xfe