linux-kernel - Re: [PATCH 3.12 000/104] 3.12.27-stable review

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Message-ID: <20140821163130.GA13364@roeck-us.net>
Date:	Thu, 21 Aug 2014 09:31:30 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	stable@...r.kernel.org, satoru.takeuchi@...il.com,
	shuah.kh@...sung.com, linux-kernel@...r.kernel.org,
	davem@...emloft.net
Subject: Re: [PATCH 3.12 000/104] 3.12.27-stable review

On Thu, Aug 21, 2014 at 10:05:56AM +0200, Jiri Slaby wrote:
> On 08/20/2014, 09:54 PM, Guenter Roeck wrote:
> > On Wed, Aug 20, 2014 at 09:54:59AM -0700, Guenter Roeck wrote:
> >> On Wed, Aug 20, 2014 at 01:43:51PM +0200, Jiri Slaby wrote:
> >>> This is the start of the stable review cycle for the 3.12.27 release.
> >>> There are 104 patches in this series, all will be posted as a response
> >>> to this one.  If anyone has any issues with these being applied, please
> >>> let me know.
> >>>
> >>> Responses should be made by Fri Aug 22 13:43:20 CEST 2014.
> >>> Anything received after that time might be too late.
> >>>
> >> Build results look good:
> >> 	total: 135 pass: 135 fail: 0
> >>
> >> qemu tests passed except for sparc64 which hangs during boot, both for SMP and
> >> non-SMP builds. I'll try to bisect as soon as I have a somewhat stable internet
> >> connection.
> >>
> > Bisect result:
> > 
> > # bad: [c07d9e5da83f1470ccc58d37fe222dab36dbca67] drivers/rtc/interface.c: fix infinite loop in initializing the alarm
> > # good: [d83a3234d2e1e2a55e7f2430fc9ca29a9bd315e7] Linux 3.12.26
> > git bisect start 'HEAD' 'v3.12.26'
> > # bad: [0d543dade2be5f0ddb268c6d6ea0e86938e3bf42] sparc64: Add membar to Niagara2 memcpy code.
> > git bisect bad 0d543dade2be5f0ddb268c6d6ea0e86938e3bf42
> > # good: [6e1af05639abfc6f1841e6bf8b5c8492971ed1f2] staging: vt6655: Fix Warning on boot handle_irq_event_percpu.
> > git bisect good 6e1af05639abfc6f1841e6bf8b5c8492971ed1f2
> > # good: [6a25e8f778995cabb0cfe2acb3247e3b42dec35f] macvlan: Initialize vlan_features to turn on offload support.
> > git bisect good 6a25e8f778995cabb0cfe2acb3247e3b42dec35f
> > # good: [bf42f839476f1f447ca696fbbab7e741861d9d7d] sparc64: Fix executable bit testing in set_pmd_at() paths.
> > git bisect good bf42f839476f1f447ca696fbbab7e741861d9d7d
> > # bad: [6acda98c75b536deaba1bf21f93411fcc484fbb5] sparc64: Add basic validations to {pud,pmd}_bad().
> > git bisect bad 6acda98c75b536deaba1bf21f93411fcc484fbb5
> > # good: [a91ce41d405b3cc59d6666ec91a5a3235f9cbcf6] sparc64: Fix top-level fault handling bugs.
> > git bisect good a91ce41d405b3cc59d6666ec91a5a3235f9cbcf6
> > # first bad commit: [6acda98c75b536deaba1bf21f93411fcc484fbb5] sparc64: Add basic validations to {pud,pmd}_bad().
> > 
> > Reverting the offending patch ('Add basic validations ...') fixes the problem.
> 
> Hi,
> 
> thanks for the work!
> 
> Just note on patches, in 3.12, there are all 3.10 patches plus these three:
> +sparc64-add-basic-validations-to-pud-pmd-_bad.patch
> +sparc64-fix-executable-bit-testing-in-set_pmd_at-paths.patch
> +sparc64-give-more-detailed-information-in-pgd-pmd-_error-and-kill-pte_error.patch
> 
> where the third adds only printouts.
> 
> These 3.14 patches are not applied to 3.12:
> +sparc64-don-t-use-_page_present-in-pte_modify-mask.patch
> +sparc64-fix-bugs-in-get_user_pages_fast-wrt.-thp.patch
> +sparc64-fix-huge-pmd-invalidation.patch
> +sparc64-fix-hex-values-in-comment-above-pte_modify.patch
> +sparc64-fix-range-check-in-kern_addr_valid.patch
> +sparc64-use-ilog2_4mb-instead-of-constant-22.patch
> 
I tried to apply a couple of those, but they don't apply cleanly.

> The last three are just cosmetical in 3.12. And I do not immediately see
> in the rest, how they could improve the state. So I am going to remove
> the add-basic-validations patch from 3.12.
> 
... so that seems to be the best available solution, at least for now.

Guenter
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