linux-kernel - Re: [PATCH trivial] kernel.h: Make container_of

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

Date:   Mon, 28 Jan 2019 05:42:42 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Jason Gunthorpe <jgg@...lanox.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        NeilBrown <neilb@...e.com>, Jiri Kosina <trivial@...nel.org>
Subject: Re: [PATCH trivial] kernel.h: Make container_of_safe type safe

On Thu, Jan 24, 2019 at 08:55:05PM +0000, Jason Gunthorpe wrote:
> The final ternary expression is given void * and type * as arguments, so
> the resulting type of the macro ends up being void *.
> 
> container_of returns a type which maches the argument, this provides type
> safety and allows the expression to be immediately used as the target
> type.
> 
> Explicitly cast ERR_CAST() to get the correct type.

I think we should just kill off container_of_safe - it has no user
in the tree, is grossly misnamed and not really all that useful to start
with.