panic: unable to find an index for ID: 0 goroutine 79654 [running]: panic(0x105cd00, 0xc002ed60e0) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc002c37928 sp=0xc002c37860 pc=0x437c65 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc00000c450, 0xc000000000, 0xc00030e780, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:222 +0x185 fp=0xc002c37998 sp=0xc002c37928 pc=0x85e5a5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc002790a80, 0xc000000000, 0x56bf88, 0x1) pkg/sentry/syscalls/linux/sys_sem.go:243 +0x69 fp=0xc002c379d8 sp=0xc002c37998 pc=0xa38aa9 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc002790a80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc8dcd, 0xc002c37be4, 0x40000002, ...) pkg/sentry/syscalls/linux/sys_sem.go:160 +0x2dc fp=0xc002c37b00 sp=0xc002c379d8 pc=0xa3817c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002790a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x124e7a0, ...) pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc002c37c60 sp=0xc002c37b00 pc=0x9bf3fc gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002790a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc002c37ce8 sp=0xc002c37c60 pc=0x9c0586 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc002790a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc005902160, 0xc0059020c0) pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc002c37d48 sp=0xc002c37ce8 pc=0x9c0178 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002790a80, 0x2, 0xc002790a80) pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc002c37e18 sp=0xc002c37d48 pc=0x9bfb1c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc002790a80, 0x13b4ae0, 0x0) pkg/sentry/kernel/task_run.go:282 +0xca5 fp=0xc002c37f60 sp=0xc002c37e18 pc=0x9b46e5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002790a80, 0xd6e) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc002c37fd0 sp=0xc002c37f60 pc=0x9b334f runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc002c37fd8 sp=0xc002c37fd0 pc=0x472821 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:328 +0xfe