panic: unable to find an index for ID: 0 goroutine 342 [running]: panic(0x1153d80, 0xc00071e100) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc000a0b9d8 sp=0xc000a0b910 pc=0x437c65 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc0004de0f0, 0xc000000000, 0xc000380900, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:248 +0x198 fp=0xc000a0ba48 sp=0xc000a0b9d8 pc=0x8b5a98 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc0002e8a80, 0x0, 0x0, 0x14d7860) pkg/sentry/syscalls/linux/sys_sem.go:313 +0x85 fp=0xc000a0ba88 sp=0xc000a0ba48 pc=0xad1dc5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc0002e8a80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x857f00000000, ...) pkg/sentry/syscalls/linux/sys_sem.go:203 +0x36e fp=0xc000a0bba8 sp=0xc000a0ba88 pc=0xad134e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0002e8a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1345be0, ...) pkg/sentry/kernel/task_syscall.go:116 +0x1b9 fp=0xc000a0bc68 sp=0xc000a0bba8 pc=0xa4a139 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0002e8a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:291 +0x70 fp=0xc000a0bcf0 sp=0xc000a0bc68 pc=0xa4b410 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0002e8a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf2c3d0, 0xc0007da460) pkg/sentry/kernel/task_syscall.go:238 +0xb4 fp=0xc000a0bd50 sp=0xc000a0bcf0 pc=0xa4aef4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0002e8a80, 0x2, 0xc0002e8a80) pkg/sentry/kernel/task_syscall.go:205 +0x198 fp=0xc000a0be20 sp=0xc000a0bd50 pc=0xa4a7d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0002e8a80, 0x14d5900, 0x0) pkg/sentry/kernel/task_run.go:327 +0xe1f fp=0xc000a0bf60 sp=0xc000a0be20 pc=0xa3d53f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0002e8a80, 0xf) pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc000a0bfd0 sp=0xc000a0bf60 pc=0xa3bfc2 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc000a0bfd8 sp=0xc000a0bfd0 pc=0x472821 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:381 +0x116