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Date: Thu, 12 Mar 2015 15:46:00 -0000
From: Pedro Alves <palves@redhat.com>
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To: Oleg Nesterov <oleg@redhat.com>,        Jan Kratochvil <jan.kratochvil@redhat.com>
CC: 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)
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>
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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).

Thanks,
Pedro Alves