* [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode
@ 2017-02-02 20:17 Joseph Salisbury
2017-02-02 20:34 ` Ard Biesheuvel
2017-02-02 20:36 ` Laura Abbott
0 siblings, 2 replies; 6+ messages in thread
From: Joseph Salisbury @ 2017-02-02 20:17 UTC (permalink / raw)
To: matt
Cc: waiman.long, ard.biesheuvel, Borislav Petkov, Linus Torvalds,
tytso, Arnd Bergmann, Greg KH, scott.norton, doug.hatch, stable,
Thomas Gleixner, Ingo Molnar, H. Peter Anvin, x86, linux-efi,
LKML
Hi Matt,
A kernel bug report was opened against Ubuntu [0]. After a kernel
bisect, it was found that reverting the following commit resolved this bug:
commit 1297667083d5442aafe3e337b9413bf02b114edb
Author: Matt Fleming <matt@codeblueprint.co.uk>
Date: Mon Sep 19 13:09:09 2016 +0100
x86/efi: Only map RAM into EFI page tables if in mixed-mode
The regression was introduced as of v4.8-rc8. It also still affects
current mainline.
I was hoping to get your feedback, since you are the patch author. Do
you think gathering any additional data will help diagnose this issue,
or would it be best to submit a revert request?
Thanks,
Joe
[0] http://pad.lv/1659340
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode
2017-02-02 20:17 [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode Joseph Salisbury
@ 2017-02-02 20:34 ` Ard Biesheuvel
2017-02-02 20:36 ` Laura Abbott
1 sibling, 0 replies; 6+ messages in thread
From: Ard Biesheuvel @ 2017-02-02 20:34 UTC (permalink / raw)
To: Joseph Salisbury
Cc: Matt Fleming, waiman.long, Borislav Petkov, Linus Torvalds,
Theodore Ts'o, Arnd Bergmann, Greg KH, scott.norton,
doug.hatch, stable, Thomas Gleixner, Ingo Molnar, H. Peter Anvin,
x86, linux-efi, LKML
On 2 February 2017 at 20:17, Joseph Salisbury
<joseph.salisbury@canonical.com> wrote:
> Hi Matt,
>
> A kernel bug report was opened against Ubuntu [0]. After a kernel
> bisect, it was found that reverting the following commit resolved this bug:
>
> commit 1297667083d5442aafe3e337b9413bf02b114edb
> Author: Matt Fleming <matt@codeblueprint.co.uk>
> Date: Mon Sep 19 13:09:09 2016 +0100
>
> x86/efi: Only map RAM into EFI page tables if in mixed-mode
>
>
> The regression was introduced as of v4.8-rc8. It also still affects
> current mainline.
>
> I was hoping to get your feedback, since you are the patch author. Do
> you think gathering any additional data will help diagnose this issue,
> or would it be best to submit a revert request?
>
Does this patch help at all?
https://git.kernel.org/cgit/linux/kernel/git/efi/efi.git/commit/?h=urgent&id=090abfc9dc7faf3f84799f956158c8c3af149a81
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode
2017-02-02 20:17 [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode Joseph Salisbury
2017-02-02 20:34 ` Ard Biesheuvel
@ 2017-02-02 20:36 ` Laura Abbott
2017-02-02 20:49 ` Joseph Salisbury
2017-02-03 14:16 ` Joseph Salisbury
1 sibling, 2 replies; 6+ messages in thread
From: Laura Abbott @ 2017-02-02 20:36 UTC (permalink / raw)
To: Joseph Salisbury, matt
Cc: waiman.long, ard.biesheuvel, Borislav Petkov, Linus Torvalds,
tytso, Arnd Bergmann, Greg KH, scott.norton, doug.hatch, stable,
Thomas Gleixner, Ingo Molnar, H. Peter Anvin, x86, linux-efi,
LKML
On 02/02/2017 12:17 PM, Joseph Salisbury wrote:
> Hi Matt,
>
> A kernel bug report was opened against Ubuntu [0]. After a kernel
> bisect, it was found that reverting the following commit resolved this bug:
>
> commit 1297667083d5442aafe3e337b9413bf02b114edb
> Author: Matt Fleming <matt@codeblueprint.co.uk>
> Date: Mon Sep 19 13:09:09 2016 +0100
>
> x86/efi: Only map RAM into EFI page tables if in mixed-mode
>
>
> The regression was introduced as of v4.8-rc8. It also still affects
> current mainline.
>
> I was hoping to get your feedback, since you are the patch author. Do
> you think gathering any additional data will help diagnose this issue,
> or would it be best to submit a revert request?
>
>
> Thanks,
>
> Joe
>
> [0] http://pad.lv/1659340
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe stable" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
You might try https://marc.info/?l=linux-kernel&m=148553171703761
which fixed https://bugzilla.redhat.com/show_bug.cgi?id=1384238
Thanks,
Laura
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode
2017-02-02 20:36 ` Laura Abbott
@ 2017-02-02 20:49 ` Joseph Salisbury
2017-02-03 14:16 ` Joseph Salisbury
1 sibling, 0 replies; 6+ messages in thread
From: Joseph Salisbury @ 2017-02-02 20:49 UTC (permalink / raw)
To: Laura Abbott, matt
Cc: waiman.long, ard.biesheuvel, Borislav Petkov, Linus Torvalds,
tytso, Arnd Bergmann, Greg KH, scott.norton, doug.hatch, stable,
Thomas Gleixner, Ingo Molnar, H. Peter Anvin, x86, linux-efi,
LKML
On 02/02/2017 03:36 PM, Laura Abbott wrote:
> On 02/02/2017 12:17 PM, Joseph Salisbury wrote:
>> Hi Matt,
>>
>> A kernel bug report was opened against Ubuntu [0]. After a kernel
>> bisect, it was found that reverting the following commit resolved this bug:
>>
>> commit 1297667083d5442aafe3e337b9413bf02b114edb
>> Author: Matt Fleming <matt@codeblueprint.co.uk>
>> Date: Mon Sep 19 13:09:09 2016 +0100
>>
>> x86/efi: Only map RAM into EFI page tables if in mixed-mode
>>
>>
>> The regression was introduced as of v4.8-rc8. It also still affects
>> current mainline.
>>
>> I was hoping to get your feedback, since you are the patch author. Do
>> you think gathering any additional data will help diagnose this issue,
>> or would it be best to submit a revert request?
>>
>>
>> Thanks,
>>
>> Joe
>>
>> [0] http://pad.lv/1659340
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe stable" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
> You might try https://marc.info/?l=linux-kernel&m=148553171703761
> which fixed https://bugzilla.redhat.com/show_bug.cgi?id=1384238
>
> Thanks,
> Laura
Thanks for the suggestion, Laura. Ard also pointed to the same patch.
I'll have it tested and report back.
Thanks again,
Joe
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode
2017-02-02 20:36 ` Laura Abbott
2017-02-02 20:49 ` Joseph Salisbury
@ 2017-02-03 14:16 ` Joseph Salisbury
2017-02-03 16:35 ` Linus Torvalds
1 sibling, 1 reply; 6+ messages in thread
From: Joseph Salisbury @ 2017-02-03 14:16 UTC (permalink / raw)
To: Laura Abbott, matt
Cc: waiman.long, ard.biesheuvel, Borislav Petkov, Linus Torvalds,
tytso, Arnd Bergmann, Greg KH, scott.norton, doug.hatch, stable,
Thomas Gleixner, Ingo Molnar, H. Peter Anvin, x86, linux-efi,
LKML
On 02/02/2017 03:36 PM, Laura Abbott wrote:
> On 02/02/2017 12:17 PM, Joseph Salisbury wrote:
>> Hi Matt,
>>
>> A kernel bug report was opened against Ubuntu [0]. After a kernel
>> bisect, it was found that reverting the following commit resolved this bug:
>>
>> commit 1297667083d5442aafe3e337b9413bf02b114edb
>> Author: Matt Fleming <matt@codeblueprint.co.uk>
>> Date: Mon Sep 19 13:09:09 2016 +0100
>>
>> x86/efi: Only map RAM into EFI page tables if in mixed-mode
>>
>>
>> The regression was introduced as of v4.8-rc8. It also still affects
>> current mainline.
>>
>> I was hoping to get your feedback, since you are the patch author. Do
>> you think gathering any additional data will help diagnose this issue,
>> or would it be best to submit a revert request?
>>
>>
>> Thanks,
>>
>> Joe
>>
>> [0] http://pad.lv/1659340
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe stable" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
> You might try https://marc.info/?l=linux-kernel&m=148553171703761
> which fixed https://bugzilla.redhat.com/show_bug.cgi?id=1384238
>
> Thanks,
> Laura
This patch resolves the bug for multiple users. Thanks again for the
pointer, Laura and Ard!
Joe
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode
2017-02-03 14:16 ` Joseph Salisbury
@ 2017-02-03 16:35 ` Linus Torvalds
0 siblings, 0 replies; 6+ messages in thread
From: Linus Torvalds @ 2017-02-03 16:35 UTC (permalink / raw)
To: Joseph Salisbury
Cc: Laura Abbott, Matt Fleming, Waiman Long, Ard Biesheuvel,
Borislav Petkov, Theodore Ts'o, Arnd Bergmann, Greg KH,
Scott J Norton, Douglas Hatch, stable, Thomas Gleixner,
Ingo Molnar, H. Peter Anvin, the arch/x86 maintainers, linux-efi,
LKML
On Fri, Feb 3, 2017 at 6:16 AM, Joseph Salisbury
<joseph.salisbury@canonical.com> wrote:
> On 02/02/2017 03:36 PM, Laura Abbott wrote:
>>
>> You might try https://marc.info/?l=linux-kernel&m=148553171703761
>> which fixed https://bugzilla.redhat.com/show_bug.cgi?id=1384238
>
> This patch resolves the bug for multiple users. Thanks again for the
> pointer, Laura and Ard!
.. and that patch should be in mainline now (and is marked for
stable), having gotten merged with the EFI fixes pull yesterday.
Linus
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-02-03 16:35 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-02-02 20:17 [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page tables if in mixed-mode Joseph Salisbury
2017-02-02 20:34 ` Ard Biesheuvel
2017-02-02 20:36 ` Laura Abbott
2017-02-02 20:49 ` Joseph Salisbury
2017-02-03 14:16 ` Joseph Salisbury
2017-02-03 16:35 ` Linus Torvalds
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).