linux-kernel - Re: [PATCH 7/7] modpost: handle relocations mismatch in __ex

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: <20150413133346.GC12442@chrystal.uk.oracle.com>
Date:	Mon, 13 Apr 2015 15:33:46 +0200
From:	Quentin Casasnovas <quentin.casasnovas@...cle.com>
To:	Rusty Russell <rusty@...abs.org>
Cc:	Quentin Casasnovas <quentin.casasnovas@...cle.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 7/7] modpost: handle relocations mismatch in __ex_table.

On Mon, Apr 13, 2015 at 08:48:56PM +0930, Rusty Russell wrote:
> Quentin Casasnovas <quentin.casasnovas@...cle.com> writes:
> > __ex_table is a simple table section where each entry is a pair of
> > addresses - the first address is an address which can fault in kernel
> > space, and the second address points to where the kernel should jump to
> > when handling that fault.  This is how copy_from_user() does not crash the
> > kernel if userspace gives a borked pointer for example.
> 
> Warnings on 32-bit:
> 
> [snip/]
> 
> Fixed like so:

Thanks for the fixing, and nice catch on the "mistmatch" ;)
                                                 ^

Quentin
--
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/