panic: unable to find an index for ID: 0 goroutine 732913 [running]: panic(0x1153d80, 0xc0096f8ef0) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc0071239d8 sp=0xc007123910 pc=0x437c65 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc00468cc90, 0xc000000000, 0xc003ab2900, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:248 +0x198 fp=0xc007123a48 sp=0xc0071239d8 pc=0x8b5a98 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc015528a80, 0x0, 0xc00df24f38, 0xffffffffffffffff) pkg/sentry/syscalls/linux/sys_sem.go:313 +0x85 fp=0xc007123a88 sp=0xc007123a48 pc=0xad1dc5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc015528a80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_sem.go:203 +0x36e fp=0xc007123ba8 sp=0xc007123a88 pc=0xad134e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc015528a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf1ea73, 0x1345be0, ...) pkg/sentry/kernel/task_syscall.go:116 +0x1b9 fp=0xc007123c68 sp=0xc007123ba8 pc=0xa4a139 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc015528a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:291 +0x70 fp=0xc007123cf0 sp=0xc007123c68 pc=0xa4b410 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc015528a80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:238 +0xb4 fp=0xc007123d50 sp=0xc007123cf0 pc=0xa4aef4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc015528a80, 0x2, 0xc015528a80) pkg/sentry/kernel/task_syscall.go:205 +0x198 fp=0xc007123e20 sp=0xc007123d50 pc=0xa4a7d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc015528a80, 0x14d5900, 0x0) pkg/sentry/kernel/task_run.go:327 +0xe1f fp=0xc007123f60 sp=0xc007123e20 pc=0xa3d53f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc015528a80, 0x26d5) pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc007123fd0 sp=0xc007123f60 pc=0xa3bfc2 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc007123fd8 sp=0xc007123fd0 pc=0x472821 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:381 +0x116