linux-kernel - Re: install_special_mapping && vm_pgoff (Was: vvar, gup && coredump)

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Message-ID: <550731AF.6080904@redhat.com>
Date:	Mon, 16 Mar 2015 19:40:31 +0000
From:	Pedro Alves <palves@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Hugh Dickins <hughd@...gle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Jan Kratochvil <jan.kratochvil@...hat.com>,
	Sergio Durigan Junior <sergiodj@...hat.com>,
	GDB Patches <gdb-patches@...rceware.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: install_special_mapping && vm_pgoff (Was: vvar, gup && coredump)

Thanks for looking over all this, guys.  Really appreciated.

On 03/16/2015 07:01 PM, Oleg Nesterov wrote:
> is wrong. To verify, I changed show_map_vma() to expose pgoff even if !file,
> but this test-case can show the problem too:

Might be good to add tests like this to selftests/ once all
this is sorted.

Pedro Alves

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