All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dave Hansen <dave.hansen@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org, tglx@linutronix.de, mingo@redhat.com,
	bp@alien8.de, hpa@zytor.com, peterz@infradead.org,
	mpe@ellerman.id.au, will.deacon@arm.com, luto@kernel.org,
	jroedel@suse.de, stable@vger.kernel.org
Subject: [PATCH 0/2] x86/mm/pkeys: fix user-visible pkey state destruction at fork()
Date: Wed, 02 Jan 2019 13:56:53 -0800	[thread overview]
Message-ID: <20190102215653.4D7C8AF4@viggo.jf.intel.com> (raw)

Hi x86 maintainers,

This is an important fix that I believe needs to be merged for 4.21.
Without it, applications calling fork() can potentially double-allocate
a protection key, causing lots of strange problems.

Thomas's Reviewed-by is on the the actual fix, but not the selftest.

I would also be happy to send this as a pull request if you would
prefer.

Cc: x86@kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: stable@vger.kernel.org

             reply	other threads:[~2019-01-02 22:02 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-02 21:56 Dave Hansen [this message]
2019-01-02 21:56 ` [PATCH 1/2] x86/pkeys: properly copy pkey state at fork() Dave Hansen
     [not found]   ` <20190103135224.1BC7A21479@mail.kernel.org>
2019-01-03 18:54     ` Dave Hansen
2019-01-15  9:36   ` [tip:x86/urgent] x86/pkeys: Properly " tip-bot for Dave Hansen
2019-01-02 21:56 ` [PATCH 2/2] x86/selftests/pkeys: fork() to check for state being preserved Dave Hansen
     [not found]   ` <20190103135225.4929F217D9@mail.kernel.org>
2019-01-03 18:57     ` Dave Hansen
2019-01-10 19:16       ` Greg KH
2019-01-15  9:37   ` [tip:x86/urgent] x86/selftests/pkeys: Fork() " tip-bot for Dave Hansen

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=20190102215653.4D7C8AF4@viggo.jf.intel.com \
    --to=dave.hansen@linux.intel.com \
    --cc=bp@alien8.de \
    --cc=hpa@zytor.com \
    --cc=jroedel@suse.de \
    --cc=linux-kernel@vger.kernel.org \
    --cc=luto@kernel.org \
    --cc=mingo@redhat.com \
    --cc=mpe@ellerman.id.au \
    --cc=peterz@infradead.org \
    --cc=stable@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=will.deacon@arm.com \
    --cc=x86@kernel.org \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.