linux-kernel - Re: [PATCH 01/37] Revert "android: binder: Sanity check at binder ioctl"

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Wed, 5 Jul 2017 20:47:18 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Todd Kjos <tkjos@...gle.com>
Cc:     Todd Kjos <tkjos@...roid.com>,
        Arve Hjønnevåg <arve@...roid.com>,
        devel@...verdev.osuosl.org, LKML <linux-kernel@...r.kernel.org>,
        Martijn Coenen <maco@...gle.com>
Subject: Re: [PATCH 01/37] Revert "android: binder: Sanity check at binder
 ioctl"

On Wed, Jul 05, 2017 at 09:08:48AM -0700, Todd Kjos wrote:
> It is reverted here because if we keep it, it would need to be refactored as
> part of this patchset since vma_vm_mm is no longer in struct binder_proc (moved
> to binder_alloc). The patch introduces a race condition in the driver and an
> attempt to fix it was submitted in "[PATCH v2] android: binder: fix dangling
> pointer comparison" and the conclusion then was to revert this patch. After
> discussing with Arve we decided reverting now was better than refactoring it to
> work with FGL.
> 
> Do you want me to add rationale to the commit message?

Yes, please do :)

thanks,

greg k-h