panic: unable to find an index for ID: 0 goroutine 27581 [running]: panic(0x1153d80, 0xc0034dbec0) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc00201d9d8 sp=0xc00201d910 pc=0x437c65 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc00086ede0, 0xc000000000, 0xc000ba6120, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:248 +0x198 fp=0xc00201da48 sp=0xc00201d9d8 pc=0x8b5a98 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc003fc7500, 0x0, 0x65, 0x4200) pkg/sentry/syscalls/linux/sys_sem.go:313 +0x85 fp=0xc00201da88 sp=0xc00201da48 pc=0xad1dc5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc003fc7500, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x857f00000000, ...) pkg/sentry/syscalls/linux/sys_sem.go:203 +0x36e fp=0xc00201dba8 sp=0xc00201da88 pc=0xad134e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc003fc7500, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1345be0, ...) pkg/sentry/kernel/task_syscall.go:116 +0x1b9 fp=0xc00201dc68 sp=0xc00201dba8 pc=0xa4a139 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc003fc7500, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:291 +0x70 fp=0xc00201dcf0 sp=0xc00201dc68 pc=0xa4b410 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc003fc7500, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf2c3d0, 0xc001eff8a0) pkg/sentry/kernel/task_syscall.go:238 +0xb4 fp=0xc00201dd50 sp=0xc00201dcf0 pc=0xa4aef4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc003fc7500, 0x2, 0xc003fc7500) pkg/sentry/kernel/task_syscall.go:205 +0x198 fp=0xc00201de20 sp=0xc00201dd50 pc=0xa4a7d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc003fc7500, 0x14d5900, 0x0) pkg/sentry/kernel/task_run.go:327 +0xe1f fp=0xc00201df60 sp=0xc00201de20 pc=0xa3d53f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc003fc7500, 0x25b) pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc00201dfd0 sp=0xc00201df60 pc=0xa3bfc2 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc00201dfd8 sp=0xc00201dfd0 pc=0x472821 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:381 +0x116