Re: [PATCH] Warn users about mismatched PID namespaces

Pedro Alves
2014-10-30T12:23:46Z

On 10/30/2014 03:07 AM, Daniel Colascione wrote:

> diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
> index 352fac1..4089417 100644
> - --- a/gdb/linux-thread-db.c
> +++ b/gdb/linux-thread-db.c
> @@ -1223,6 +1223,25 @@ thread_db_new_objfile (struct objfile *objfile)
> static void
> thread_db_inferior_created (struct target_ops *target, int from_tty)
> {
> + /* If the child is in a different PID namespace, its idea of its PID
> + will differ from our idea of its PID. When we scan the child's
> + thread list, we'll mistakenly think it has no threads since the
> + thread PID fields won't match the PID we give to
> + libthread_db. */

Why not give libthread_db the right PID then?

Thanks,
Pedro Alves