Test api.detach_spawn exposes a race during takeover, where a native thread that hadn't been taken over yet follows the vsyscall hook in the vdso page, and our post-syscall code assuming valid TLS causing a crash.
Issue: #2694
Test api.detach_spawn exposes a race during takeover, where a native thread that hadn't been taken over yet follows the vsyscall hook in the vdso page, and our post-syscall code assuming valid TLS causing a crash.
Issue: #2694