linux-kernel - Re: vdso_install target broken post-3.15

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]

Message-ID: <CALCETrUVudD++7i679xVW_NvvVUmHpUqdufjbguQciT5k5sguQ@mail.gmail.com>
Date:	Tue, 17 Jun 2014 20:45:50 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Josh Boyer <jwboyer@...oraproject.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: vdso_install target broken post-3.15

On Tue, Jun 17, 2014 at 3:54 PM, Andy Lutomirski <luto@...capital.net> wrote:
> Just a heads up: gdb can't debug the vdso on 3.16-rc1.  I filed a bug:
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=17064
>
> We may need to extend the fake section header hack to all vdso
> versions and stick the ELF notes in there.

I have a semi-working implementation of a workaround, bit it adds a
fair amount of extra crud to the image, and it's pushing my
configuration past a page boundary.  I suspect that, if we're willing
to abuse the ELF format a bit more, I can get the overhead down,
though.

Are we okay with regressing here until binutils gets fixed?

--Andy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/