linux-kernel - [PATCH 0/3] PTI x86-32 Updates and Fixes

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Date:   Wed, 25 Jul 2018 17:48:00 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Juergen Gross <jgross@...e.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>, Jiri Kosina <jkosina@...e.cz>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Brian Gerst <brgerst@...il.com>,
        David Laight <David.Laight@...lab.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Eduardo Valentin <eduval@...zon.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Will Deacon <will.deacon@....com>, aliguori@...zon.com,
        daniel.gruss@...k.tugraz.at, hughd@...gle.com, keescook@...gle.com,
        Andrea Arcangeli <aarcange@...hat.com>,
        Waiman Long <llong@...hat.com>, Pavel Machek <pavel@....cz>,
        "David H . Gutteridge" <dhgutteridge@...patico.ca>,
        jroedel@...e.de, Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>, joro@...tes.org
Subject: [PATCH 0/3] PTI x86-32 Updates and Fixes

Hi,

here are three patches on-top of tip/x86/pti to update the
vmallo_fault() fix and also with another important fix.

The first two patches remove the WARN_ON_ONCE(in_nmi) from
the vmalloc_fault() function and revert the previous fix, as
discussed at the last patch-set.

The third patch is an important fix for a silent memory
corruption issue found by the trinity fuzzer, which did take
a while to track down. But I found it and with the fix the
fuzzer already runs for couple of hours now and the VM is
still alive.

Regards,

	Joerg

Joerg Roedel (3):
  x86/mm: Remove in_nmi() warning from vmalloc_fault()
  Revert "perf/core: Make sure the ring-buffer is mapped in all
    page-tables"
  x86/kexec: Allocate 8k PGDs for PTI

 arch/x86/kernel/machine_kexec_32.c |  5 +++--
 arch/x86/mm/fault.c                |  2 --
 kernel/events/ring_buffer.c        | 16 ----------------
 3 files changed, 3 insertions(+), 20 deletions(-)

-- 
2.7.4