On Sun, Jan 22, 2023 at 8:22 PM Gregory Price [off-list ref] wrote:
<snip>

+#define PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG 0x4210
+#define PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG 0x4211
+struct syscall_user_dispatch_config {
+       __u64 mode;
+       __s8 *selector;
+       __u64 offset;
+       __u64 len;
+       __u8 on_dispatch;

Sorry, I didn't notice this in the previous version. on_dispatch looks
like an internal
property and I don't see how we can stop a process with ptrace when on_dispatch
is set to a non-zero value. I am not sure that we need to expose it to
user-space.

Other than that, the patch looks good to me.

Thanks,
Andrei