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Date: Thu, 12 Mar 2015 15:57:00 -0000
From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: Pedro Alves <palves@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>,        Sergio Durigan Junior <sergiodj@redhat.com>,        GDB Patches <gdb-patches@sourceware.org>
Subject: Re: [PATCH] Improve corefile generation by using /proc/PID/coredump_filter (PR corefile/16902)
Message-ID: <20150312155712.GA1837@host1.jankratochvil.net>
References: <878ufc9kau.fsf@redhat.com> <20150305154827.GA9441@host1.jankratochvil.net> <87zj7r5fpz.fsf@redhat.com> <20150305205744.GA13165@host1.jankratochvil.net> <20150311200052.GA22654@redhat.com> <20150312150024.GA4817@redhat.com> <5501B48B.7060802@redhat.com>
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On Thu, 12 Mar 2015 16:45:15 +0100, Pedro Alves wrote:
> On 03/12/2015 03:00 PM, Oleg Nesterov wrote:
> 
> > However. If (for any reason) you decide to dump this region, gdb can
> > look into /proc/self/maps, find its own "vvar" mapping, and simply read
> > this memory. Unlike "vdso", "vvar" has the same content for every process.
> 
> Actually it can't: GDB may well be dumping the memory of
> a process running on another machine (through gdbserver).

So it can - from gdbserver's [vvar].


Jan