All of lore.kernel.org
 help / color / mirror / Atom feed
From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5sub1 7/8] arm64: move kernel image to base of vmalloc area
Date: Wed, 17 Feb 2016 10:48:18 +0000	[thread overview]
Message-ID: <20160217104817.GA26303@leverpostej> (raw)
In-Reply-To: <20160217101803.GB32714@e104818-lin.cambridge.arm.com>

On Wed, Feb 17, 2016 at 10:18:03AM +0000, Catalin Marinas wrote:
> On Wed, Feb 17, 2016 at 12:15:15PM +0300, Andrey Ryabinin wrote:
> > On 02/16/2016 07:42 PM, Mark Rutland wrote:
> > > FWIW with the below patch I don't see any "screwed shadow mapping"
> > > warnings on my board, and still later see a tonne of KASAN splats in the
> > > scheduler.
> > 
> > It is possible that I missed something, but I think it means that
> > shadow is alright.
> > 
> > I wonder whether this happens on 4.4. If not, than something in
> > 4.5-rc1 caused this, and the obvious suspect here is irq stack.
> 
> It doesn't seem to happen on 4.4, it starts somewhere before 4.5-rc1. I
> tested the arm64 branch that we pushed upstream with the irq stack
> changes but it didn't trigger. It could as well be a combination of
> multiple change or just something else.
> 
> We'll do some bisecting, though it's not that fun going through the
> merging window commits, especially since many are based on 4.4-rcX (we
> could try on merges only first, there are fewer).

FWIW I did that bisect last night, and that fingered commit
f11aef69b235bc30 ("Merge branch 'pm-cpuidle'") as the first bad commit.

Either there's some subtle interaction, or it's less reproducible than I
thought and the "good" commits are only "possibly-good". I'll try to dig
into that.

FWIW, my bisect log is:

git bisect start
# bad: [92e963f50fc74041b5e9e744c330dca48e04f08d] Linux 4.5-rc1
git bisect bad 92e963f50fc74041b5e9e744c330dca48e04f08d
# good: [afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc] Linux 4.4
git bisect good afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc
# good: [4dffbfc48d65e5d8157a634fd670065d237a9377] arm64/efi: mark UEFI reserved regions as MEMBLOCK_NOMAP
git bisect good 4dffbfc48d65e5d8157a634fd670065d237a9377
# good: [1289ace5b4f70f1e68ce785735b82c7e483de863] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
git bisect good 1289ace5b4f70f1e68ce785735b82c7e483de863
# good: [984065055e6e39f8dd812529e11922374bd39352] Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
git bisect good 984065055e6e39f8dd812529e11922374bd39352
# good: [6d1c244803f2c013fb9c31b0904c01f1830b73ab] Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect good 6d1c244803f2c013fb9c31b0904c01f1830b73ab
# bad: [0a13daedf7ffc71b0c374a036355da7fddb20d6d] Merge branch 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block
git bisect bad 0a13daedf7ffc71b0c374a036355da7fddb20d6d
# bad: [278e5acae1321978686e85ca92906054a36aa19b] Merge tag 'for-4.5' of git://git.osdn.jp/gitroot/uclinux-h8/linux
git bisect bad 278e5acae1321978686e85ca92906054a36aa19b
# good: [f9cd69fe5eb6347b4de56458d0378bc0fa44bce9] Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect good f9cd69fe5eb6347b4de56458d0378bc0fa44bce9
# good: [9638685e32af961943b679fcb72d4ddd458eb18f] Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect good 9638685e32af961943b679fcb72d4ddd458eb18f
# good: [fa8bb4518771b19460a318fbab3eb36c81db3a50] Merge branch 'pm-devfreq'
git bisect good fa8bb4518771b19460a318fbab3eb36c81db3a50
# bad: [30f05309bde49295e02e45c7e615f73aa4e0ccc2] Merge tag 'pm+acpi-4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect bad 30f05309bde49295e02e45c7e615f73aa4e0ccc2
# good: [5bb1729cbdfbe974ad6385be94b14afbac97e19f] cpuidle: menu: Avoid pointless checks in menu_select()
git bisect good 5bb1729cbdfbe974ad6385be94b14afbac97e19f
# bad: [db2b52f75250c88ee3c6ba3d91bef38f3f1a1e8c] Merge branch 'pm-tools'
git bisect bad db2b52f75250c88ee3c6ba3d91bef38f3f1a1e8c
# good: [38cb76a307821f76c7f9dff7449f73aeb014d5cc] cpupower: Fix build error in cpufreq-info
git bisect good 38cb76a307821f76c7f9dff7449f73aeb014d5cc
# bad: [f11aef69b235bc30c323776d75ac23b43aac45bb] Merge branch 'pm-cpuidle'
git bisect bad f11aef69b235bc30c323776d75ac23b43aac45bb
# first bad commit: [f11aef69b235bc30c323776d75ac23b43aac45bb] Merge branch 'pm-cpuidle'

Thanks,
Mark.

  reply	other threads:[~2016-02-17 10:48 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-01 10:54 [PATCH v5sub1 0/8] arm64: split linear and kernel mappings Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 1/8] of/fdt: make memblock minimum physical address arch configurable Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 2/8] arm64: add support for ioremap() block mappings Ard Biesheuvel
2016-02-01 14:10   ` Mark Rutland
2016-02-01 14:56     ` Catalin Marinas
2016-02-01 10:54 ` [PATCH v5sub1 3/8] arm64: introduce KIMAGE_VADDR as the virtual base of the kernel region Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 4/8] arm64: pgtable: implement static [pte|pmd|pud]_offset variants Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 5/8] arm64: decouple early fixmap init from linear mapping Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 6/8] arm64: kvm: deal with kernel symbols outside of " Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 7/8] arm64: move kernel image to base of vmalloc area Ard Biesheuvel
2016-02-01 12:24   ` Catalin Marinas
2016-02-01 12:27     ` Ard Biesheuvel
2016-02-01 13:41       ` Catalin Marinas
2016-02-01 14:32   ` Mark Rutland
2016-02-12 14:58   ` Catalin Marinas
2016-02-12 15:02     ` Ard Biesheuvel
2016-02-12 15:10       ` Catalin Marinas
2016-02-12 15:17         ` Ard Biesheuvel
2016-02-12 15:26           ` Catalin Marinas
2016-02-12 15:38             ` Sudeep Holla
2016-02-12 16:06               ` Catalin Marinas
2016-02-12 16:44                 ` Ard Biesheuvel
2016-02-15 14:28                 ` Andrey Ryabinin
2016-02-15 14:35                   ` Mark Rutland
2016-02-15 18:59                   ` Catalin Marinas
2016-02-16 12:59                     ` Andrey Ryabinin
2016-02-16 14:12                       ` Mark Rutland
2016-02-16 14:29                         ` Mark Rutland
2016-02-16 15:17                       ` Ard Biesheuvel
2016-02-16 15:36                         ` Andrey Ryabinin
2016-02-16 16:42                           ` Mark Rutland
2016-02-17  9:15                             ` Andrey Ryabinin
2016-02-17 10:10                               ` James Morse
2016-02-17 10:19                                 ` Catalin Marinas
2016-02-17 10:36                                   ` Catalin Marinas
2016-02-17 10:18                               ` Catalin Marinas
2016-02-17 10:48                                 ` Mark Rutland [this message]
2016-02-17 14:39                       ` Mark Rutland
2016-02-17 16:31                         ` Andrey Ryabinin
2016-02-17 19:35                           ` Mark Rutland
2016-02-17 17:01                         ` KASAN issues with idle / hotplug area (was: Re: [PATCH v5sub1 7/8] arm64: move kernel image to base of vmalloc area) Mark Rutland
2016-02-17 17:56                           ` Mark Rutland
2016-02-17 19:16                             ` Mark Rutland
2016-02-18  8:06                               ` Ard Biesheuvel
2016-02-18  8:22                               ` KASAN issues with idle / hotplug area Andrey Ryabinin
2016-02-18  8:42                                 ` Andrey Ryabinin
2016-02-18  9:38                                 ` Andrey Ryabinin
2016-02-18 11:34                                   ` Mark Rutland
2016-02-18  9:39                                 ` Lorenzo Pieralisi
2016-02-18 11:38                                   ` Mark Rutland
2016-02-18 11:45                                   ` Andrey Ryabinin
2016-02-18 11:15                                 ` Mark Rutland
2016-02-18 11:46                                   ` Andrey Ryabinin
2016-02-18 12:08                                     ` Mark Rutland
2016-02-12 17:47   ` [PATCH v5sub1 7/8] arm64: move kernel image to base of vmalloc area James Morse
2016-02-12 18:01     ` Ard Biesheuvel
2016-02-01 10:54 ` [PATCH v5sub1 8/8] arm64: allow kernel Image to be loaded anywhere in physical memory Ard Biesheuvel
2016-02-01 14:50   ` Mark Rutland
2016-02-01 16:28     ` Fu Wei
2016-02-16  8:55       ` Fu Wei
2016-02-01 15:06   ` Catalin Marinas
2016-02-01 15:13     ` Ard Biesheuvel
2016-02-01 16:31       ` Ard Biesheuvel
2016-02-01 17:31         ` Catalin Marinas
2016-02-01 17:57           ` Ard Biesheuvel
2016-02-01 18:02             ` Catalin Marinas
2016-02-01 18:30               ` [PATCH] arm64: move back to generic memblock_enforce_memory_limit() Ard Biesheuvel
2016-02-02 10:19                 ` Catalin Marinas
2016-02-02 10:28                   ` Ard Biesheuvel
2016-02-02 10:44                     ` Catalin Marinas
2016-02-12 19:45 ` [PATCH v5sub1 0/8] arm64: split linear and kernel mappings Matthias Brugger
2016-02-12 19:47   ` Ard Biesheuvel
2016-02-12 20:10     ` Matthias Brugger
2016-02-12 20:37       ` Ard Biesheuvel
2016-02-13 14:28       ` Ard Biesheuvel
2016-02-15 13:29         ` Matthias Brugger
2016-02-15 13:40           ` Will Deacon
2016-02-15 14:58           ` Ard Biesheuvel

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=20160217104817.GA26303@leverpostej \
    --to=mark.rutland@arm.com \
    --cc=linux-arm-kernel@lists.infradead.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.