From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Dmitry Vyukov <dvyukov@google.com>,
Alexander Potapenko <glider@google.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
"x86@kernel.org" <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Andi Kleen <ak@linux.intel.com>,
Dave Hansen <dave.hansen@intel.com>,
Andy Lutomirski <luto@amacapital.net>,
linux-arch@vger.kernel.org,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
kasan-dev <kasan-dev@googlegroups.com>
Subject: Re: KASAN vs. boot-time switching between 4- and 5-level paging
Date: Mon, 10 Jul 2017 19:57:00 +0300 [thread overview]
Message-ID: <a3ed1e95-d1c1-9672-3010-ec06309f31cb@virtuozzo.com> (raw)
In-Reply-To: <20170710123346.7y3jnftqgpingim3@node.shutemov.name>
On 07/10/2017 03:33 PM, Kirill A. Shutemov wrote:
>
> [Sorry for loong delay.]
>
> The patch works for me for legacy boot. But it breaks EFI boot with
> 5-level paging. And I struggle to understand why.
>
> What I see is many page faults at mm/kasan/kasan.c:758 --
> "DEFINE_ASAN_LOAD_STORE(4)". Handling one of them I get double-fault at
> arch/x86/kernel/head_64.S:298 -- "pushq %r14", which ends up with triple
> fault.
>
> Any ideas?
>
> If you want to play with this by yourself, qemu supports la57 -- use
> -cpu "qemu64,+la57".
>
I'll have a look.
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next prev parent reply other threads:[~2017-07-10 16:55 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-25 20:33 [PATCHv1, RFC 0/8] Boot-time switching between 4- and 5-level paging Kirill A. Shutemov
2017-05-25 20:33 ` [PATCHv1, RFC 1/8] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time Kirill A. Shutemov
2017-05-25 20:33 ` [PATCHv1, RFC 2/8] x86/mm: Make virtual memory layout movable for CONFIG_X86_5LEVEL Kirill A. Shutemov
2017-05-25 20:33 ` [PATCHv1, RFC 3/8] x86/mm: Make PGDIR_SHIFT and PTRS_PER_P4D variable Kirill A. Shutemov
2017-05-25 20:33 ` [PATCHv1, RFC 4/8] x86/mm: Handle boot-time paging mode switching at early boot Kirill A. Shutemov
2017-05-25 20:33 ` [PATCHv1, RFC 5/8] x86/mm: Fold p4d page table layer at runtime Kirill A. Shutemov
2017-05-27 15:09 ` Brian Gerst
2017-05-27 22:46 ` Kirill A. Shutemov
2017-05-27 22:56 ` Brian Gerst
2017-05-25 20:33 ` [PATCHv1, RFC 6/8] x86/mm: Replace compile-time checks for 5-level with runtime-time Kirill A. Shutemov
2017-05-25 20:33 ` [PATCHv1, RFC 7/8] x86/mm: Hacks for boot-time switching between 4- and 5-level paging Kirill A. Shutemov
2017-05-26 22:10 ` KASAN vs. " Kirill A. Shutemov
2017-05-29 10:02 ` Dmitry Vyukov
2017-05-29 11:18 ` Andrey Ryabinin
2017-05-29 11:19 ` Dmitry Vyukov
2017-05-29 11:45 ` Andrey Ryabinin
2017-05-29 12:46 ` Andrey Ryabinin
2017-06-01 14:56 ` Andrey Ryabinin
2017-07-10 12:33 ` Kirill A. Shutemov
2017-07-10 12:43 ` Dmitry Vyukov
2017-07-10 14:17 ` Kirill A. Shutemov
2017-07-10 15:56 ` Andy Lutomirski
2017-07-10 18:47 ` Kirill A. Shutemov
2017-07-10 20:07 ` Andy Lutomirski
2017-07-10 21:24 ` Kirill A. Shutemov
2017-07-11 0:30 ` Andy Lutomirski
2017-07-11 10:35 ` Kirill A. Shutemov
2017-07-11 15:06 ` Andy Lutomirski
2017-07-11 15:15 ` Andrey Ryabinin
2017-07-11 16:45 ` Andrey Ryabinin
2017-07-11 17:03 ` Kirill A. Shutemov
2017-07-11 17:29 ` Andrey Ryabinin
2017-07-11 19:05 ` Kirill A. Shutemov
2017-07-13 12:58 ` Andrey Ryabinin
2017-07-13 13:52 ` Kirill A. Shutemov
2017-07-13 14:15 ` Kirill A. Shutemov
2017-07-13 14:19 ` Andrey Ryabinin
2017-07-24 12:13 ` Kirill A. Shutemov
2017-07-24 14:07 ` Andrey Ryabinin
2017-07-10 16:57 ` Andrey Ryabinin [this message]
2017-05-25 20:33 ` [PATCHv1, RFC 8/8] x86/mm: Allow to boot without la57 if CONFIG_X86_5LEVEL=y Kirill A. Shutemov
2017-05-25 23:24 ` [PATCHv1, RFC 0/8] Boot-time switching between 4- and 5-level paging Linus Torvalds
2017-05-26 0:40 ` Andy Lutomirski
2017-05-26 4:18 ` Kevin Easton
2017-05-26 7:21 ` Andy Lutomirski
2017-05-26 13:00 ` Kirill A. Shutemov
2017-05-26 13:35 ` Andi Kleen
2017-05-26 15:51 ` Linus Torvalds
2017-05-26 15:58 ` Kirill A. Shutemov
2017-05-26 16:13 ` Linus Torvalds
2017-05-26 18:24 ` hpa
2017-05-26 19:23 ` Dave Hansen
2017-05-26 19:36 ` hpa
2017-05-26 19:40 ` hpa
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