* Regression in 4.7-rc7
@ 2016-07-11 19:42 Jens Axboe
2016-07-12 5:16 ` Zheng, Lv
0 siblings, 1 reply; 2+ messages in thread
From: Jens Axboe @ 2016-07-11 19:42 UTC (permalink / raw)
To: lv.zheng, LKML
Hi,
Updated the laptop to -rc7 this morning, and it fails to boot. After
bisecting it, this is the culprit:
commit 45209046c47b93fadf26dc59a9da724f387b9cf2
Author: Lv Zheng <lv.zheng@intel.com>
Date: Tue Jul 5 13:53:12 2016 +0800
ACPICA: Namespace: Fix namespace/interpreter lock ordering
There is a lock order issue in acpi_load_tables(). The namespace lock
is held before holding the interpreter lock.
The last I see is grub loading initramfs, after that nothing. Very
reproducible. Laptop is a Dell XPS 13.
--
Jens Axboe
^ permalink raw reply [flat|nested] 2+ messages in thread* RE: Regression in 4.7-rc7
2016-07-11 19:42 Regression in 4.7-rc7 Jens Axboe
@ 2016-07-12 5:16 ` Zheng, Lv
0 siblings, 0 replies; 2+ messages in thread
From: Zheng, Lv @ 2016-07-12 5:16 UTC (permalink / raw)
To: Jens Axboe, LKML
We will revert 3 commits to fix this issue.
And re-enable the reverted feature in the future when it is safe to re-enable it.
See this bug for reference:
https://bugzilla.kernel.org/show_bug.cgi?id=121701
Thanks and best regards
-Lv
> From: Jens Axboe [mailto:axboe@kernel.dk]
> Subject: Regression in 4.7-rc7
>
> Hi,
>
> Updated the laptop to -rc7 this morning, and it fails to boot. After
> bisecting it, this is the culprit:
>
> commit 45209046c47b93fadf26dc59a9da724f387b9cf2
> Author: Lv Zheng <lv.zheng@intel.com>
> Date: Tue Jul 5 13:53:12 2016 +0800
>
> ACPICA: Namespace: Fix namespace/interpreter lock ordering
>
> There is a lock order issue in acpi_load_tables(). The namespace lock
> is held before holding the interpreter lock.
>
> The last I see is grub loading initramfs, after that nothing. Very
> reproducible. Laptop is a Dell XPS 13.
>
> --
> Jens Axboe
^ permalink raw reply [flat|nested] 2+ messages in thread
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