linux-kernel - Re: [PATCH] x86: ptrace debugreg checks rewrite

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: <20090506203852.D9AC9FC39E@magilla.sf.frob.com>
Date:	Wed,  6 May 2009 13:38:52 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Alexey Dobriyan <adobriyan@...il.com>,
	Oleg Nesterov <oleg@...hat.com>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, containers@...ts.linux-foundation.org
Subject: Re: [PATCH] x86: ptrace debugreg checks rewrite

> > On Mon, May 04, 2009 at 04:16:01AM +0400, Alexey Dobriyan wrote:
> > > +static int ptrace_check_debugreg(int _32bit,
> > > +				 unsigned long dr0, unsigned long dr1,
> > > +				 unsigned long dr2, unsigned long dr3,
> > > +				 unsigned long dr6, unsigned long dr7)
> > > +{
> > > +	/* Breakpoint type: 00: --x, 01: -w-, 10: undefined, 11: rw- */
> > > +	unsigned int rw[4];
> > > +	/* Breakpoint length: 00: 1 byte, 01: 2 bytes, 10: 8 bytes, 11: bytes */
> > 								        4 bytes, of course
> 
> Roland, Oleg, do you have any pending/planned changes in this area?

I don't.  I expect the only future work on this arch debugreg stuff to be
via the hw_breakpoint work, extending that and/or building new things on it.


Thanks,
Roland
--
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/