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: <2023082458-vividness-habitable-cbc8@gregkh>
Date:   Thu, 24 Aug 2023 15:52:56 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Borislav Petkov <bp@...en8.de>
Cc:     "Paul E. McKenney" <paulmck@...nel.org>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        x86@...nel.org, peterz@...radead.org, keescook@...omium.org,
        elver@...gle.com, dvyukov@...gle.com, glider@...gle.com
Subject: Re: [BUG] missing return thunk: __ret+0x5/0x7e-__ret+0x0/0x7e: e9 f6
 ff ff ff

On Wed, Aug 16, 2023 at 08:17:20PM +0200, Borislav Petkov wrote:
> Hey Paul,
> 
> On Wed, Aug 16, 2023 at 10:54:09AM -0700, Paul E. McKenney wrote:
> > I hit the splat at the end of this message in recent mainline, and has
> > appeared some time since v6.5-rc1.  Should I be worried?
> 
> does it go away if you try the latest tip:x86/urgent branch?

Note, this problem is showing up in the 6.1.y branch right now, due to
one objtool patch not being able to be backported there easily (i.e. I
tried and gave up.)

4ae68b26c3ab ("objtool/x86: Fix SRSO mess") being the commit that I
can't seem to get to work properly, my attempt can be seen here:
	https://lore.kernel.org/r/2023082212-pregnant-lizard-80e0@gregkh

Just a heads up as this will start to affect users of the next 6.1.y
release, and probably older releases, as they are taking portions of the
"fixes for fixes" but not the above mentioned one.

thanks,

greg k-h

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ