panic: unable to find an index for ID: 0 goroutine 516427 [running]: panic(0x1950080, 0xc0028322b0) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc002aed530 sp=0xc002aed468 pc=0x43a6c5 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc008cf8780, 0xc000000000, 0xc00597d140, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:250 +0x27f fp=0xc002aed5e0 sp=0xc002aed530 pc=0xb920ff gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc00622c000, 0xc000000000, 0x1, 0x7fa6e3601e68) pkg/sentry/syscalls/linux/sys_sem.go:314 +0xc9 fp=0xc002aed638 sp=0xc002aed5e0 pc=0xee48e9 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc00622c000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7fa6e3600000, 0x4457c5, 0xc002aed838, ...) pkg/sentry/syscalls/linux/sys_sem.go:204 +0x53f fp=0xc002aed7e0 sp=0xc002aed638 pc=0xee393f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00622c000, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc002aeda50, 0x439270, ...) pkg/sentry/kernel/task_syscall.go:117 +0x582 fp=0xc002aed9c0 sp=0xc002aed7e0 pc=0xe14ac2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00622c000, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc00622c8df, 0xc00622c000) pkg/sentry/kernel/task_syscall.go:292 +0xd2 fp=0xc002aedaa8 sp=0xc002aed9c0 pc=0xe165d2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00622c000, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4860df, 0xc002b05420) pkg/sentry/kernel/task_syscall.go:239 +0x157 fp=0xc002aedb50 sp=0xc002aedaa8 pc=0xe15c97 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00622c000, 0x1, 0xc000000004) pkg/sentry/kernel/task_syscall.go:206 +0x2b1 fp=0xc002aedcc8 sp=0xc002aedb50 pc=0xe15211 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00622c000, 0x3, 0x0) pkg/sentry/kernel/task_run.go:329 +0x15ab fp=0xc002aeded8 sp=0xc002aedcc8 pc=0xdfeb4b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00622c000, 0x2c5c) pkg/sentry/kernel/task_run.go:102 +0x332 fp=0xc002aedfd0 sp=0xc002aeded8 pc=0xdfc8b2 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc002aedfd8 sp=0xc002aedfd0 pc=0x477501 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:383 +0x1da