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Re: [PATCH] Warn users about mismatched PID namespaces
- From: Pedro Alves <palves at redhat dot com>
- To: Daniel Colascione <dancol at dancol dot org>, gdb-patches at sourceware dot org
- Date: Thu, 30 Oct 2014 12:23:35 +0000
- Subject: Re: [PATCH] Warn users about mismatched PID namespaces
- Authentication-results: sourceware.org; auth=none
- References: <5451AB7E dot 40709 at dancol dot org>
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