LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Ingo Molnar <mingo@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: linux-crypto@vger.kernel.org, Mike Galbraith <efault@gmx.de>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	torvalds@linux-foundation.org, tglx@linutronix.de,
	jpoimboe@redhat.com, luto@kernel.org, peterz@infradead.org,
	brgerst@gmail.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
	dvlasenk@redhat.com, h.peter.anvin@intel.com,
	linux-tip-commits <linux-tip-commits@vger.kernel.org>,
	Herbert Xu <herbert@gondor.apana.org.au>
Subject: Re: [PATCH] x86/crypto: Add missing RETs
Date: Sun, 24 Jun 2018 09:11:05 +0200	[thread overview]
Message-ID: <20180624071105.GA29407@gmail.com> (raw)
In-Reply-To: <20180623103622.GA2760@zn.tnic>


* Borislav Petkov <bp@alien8.de> wrote:

> Lemme send a proper patch now...
> 
> ---
> From: Borislav Petkov <bp@suse.de>
> Date: Sun, 17 Jun 2018 13:57:42 +0200
> Subject: [PATCH] x86/crypto: Add missing RETs
> 
> Add explicit RETs to the tail calls of AEGIS and MORUS crypto algorithms
> otherwise they run into INT3 padding due to
> 
>   51bad67ffbce ("x86/asm: Pad assembly functions with INT3 instructions")
> 
> leading to spurious debug exceptions.
> 
> Mike Galbraith <efault@gmx.de> took care of all the remaining callsites.

Note that 51bad67ffbce has been zapped because it caused too many problems like 
this, but the explicit RETs make sense nevertheless. When applying the patch 
please don't include the SHA1 of the non-upstream (and probably never-upstream) 
commit.

Thanks,

	Ingo

  parent reply	other threads:[~2018-06-24  7:11 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-07 21:37 [PATCH] x86: pad assembly functions with INT3 Alexey Dobriyan
2018-05-07 21:41 ` hpa
2018-05-09 16:55   ` Alexey Dobriyan
2018-05-09 19:28     ` H. Peter Anvin
2018-05-10 16:39 ` David Laight
2018-05-11 18:53   ` H. Peter Anvin
2018-05-14  9:04     ` David Laight
2018-05-14 11:05       ` hpa
2018-05-15  6:54         ` Ingo Molnar
2018-05-15  6:59           ` hpa
2018-05-14 12:53 ` [tip:x86/pti] x86/asm: Pad assembly functions with INT3 instructions tip-bot for Alexey Dobriyan
2018-06-17 11:40   ` Mike Galbraith
2018-06-17 12:00     ` Borislav Petkov
2018-06-17 13:38       ` Mike Galbraith
2018-06-17 14:02         ` Mike Galbraith
2018-06-17 19:47           ` Borislav Petkov
2018-06-18  2:34             ` Mike Galbraith
2018-06-23 10:36               ` [PATCH] x86/crypto: Add missing RETs Borislav Petkov
2018-06-23 17:30                 ` Ondrej Mosnáček
2018-06-24  7:11                 ` Ingo Molnar [this message]
2018-06-24  7:12                   ` Thomas Gleixner
2018-06-24 10:15                     ` Borislav Petkov
2018-06-24 10:44                   ` Alexey Dobriyan
2018-06-25  7:24                     ` Ingo Molnar
2018-06-25 13:19                       ` Josh Poimboeuf
2018-06-26  6:49                         ` Ingo Molnar
2018-06-26 12:31                           ` Josh Poimboeuf
2018-07-05  7:58                             ` Ingo Molnar
2018-07-06 14:06                               ` Josh Poimboeuf
2018-07-06 14:57                                 ` Ingo Molnar
2018-07-01 13:19                 ` Herbert Xu
2018-07-01 15:24                   ` Ondrej Mosnáček
2018-07-01 15:45                     ` Herbert Xu
2018-06-19 11:27         ` [tip:x86/pti] x86/asm: Pad assembly functions with INT3 instructions David Laight

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180624071105.GA29407@gmail.com \
    --to=mingo@kernel.org \
    --cc=adobriyan@gmail.com \
    --cc=bp@alien8.de \
    --cc=brgerst@gmail.com \
    --cc=dvlasenk@redhat.com \
    --cc=efault@gmx.de \
    --cc=h.peter.anvin@intel.com \
    --cc=herbert@gondor.apana.org.au \
    --cc=hpa@zytor.com \
    --cc=jpoimboe@redhat.com \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-tip-commits@vger.kernel.org \
    --cc=luto@kernel.org \
    --cc=peterz@infradead.org \
    --cc=tglx@linutronix.de \
    --cc=torvalds@linux-foundation.org \
    --subject='Re: [PATCH] x86/crypto: Add missing RETs' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).