linux-kernel - Re: linux-next: Tree for Jan 7

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Message-ID: <20150107142656.GA5666@roeck-us.net>
Date:	Wed, 7 Jan 2015 06:26:56 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Christian Borntraeger <borntraeger@...ibm.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-sh@...r.kernel.org
Subject: Re: linux-next: Tree for Jan 7

On Wed, Jan 07, 2015 at 03:16:18PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> Changes since 20150106:
> 
> *crickets*
> 
> Non-merge commits (relative to Linus' tree): 1350
>  1543 files changed, 41856 insertions(+), 24250 deletions(-)
> 
> ----------------------------------------------------------------------------
> 

New build failure for sh:dreamcast_defconfig:

arch/sh/mm/gup.c: In function 'gup_get_pte':
arch/sh/mm/gup.c:20:2: error: invalid initializer
make[1]: *** [arch/sh/mm/gup.o] Error 1

bisect log:

# bad: [7e3619a6de57f0257a2f6480182d2287ee05e314] Add linux-next specific files for 20150107
# good: [b1940cd21c0f4abdce101253e860feff547291b0] Linux 3.19-rc3
git bisect start 'HEAD' 'v3.19-rc3'
# good: [c48667c5659248ff2b2fbff5cd23c43b5768e81b] Merge remote-tracking branch 'net-next/master'
git bisect good c48667c5659248ff2b2fbff5cd23c43b5768e81b
# good: [b8cf629ce7d554711dd7ab256b00e6110355e1d7] Merge remote-tracking branch 'mmc-uh/next'
git bisect good b8cf629ce7d554711dd7ab256b00e6110355e1d7
# good: [cc52ff032bc2d91c78d7cf9aefcfa9e266ace816] Merge remote-tracking branch 'rcu/rcu/next'
git bisect good cc52ff032bc2d91c78d7cf9aefcfa9e266ace816
# bad: [9634277bcdab7b9d6a91409dc11d85502aa2e74b] Merge remote-tracking branch 'access_once/linux-next'
git bisect bad 9634277bcdab7b9d6a91409dc11d85502aa2e74b
# good: [261379560ee6aa65b4869c94eda0d3d60773aca3] Merge remote-tracking branch 'scsi/for-next'
git bisect good 261379560ee6aa65b4869c94eda0d3d60773aca3
# good: [38d45afa56bfca714780e45532760d64cd53b65b] Merge remote-tracking branch 'llvmlinux/for-next'
git bisect good 38d45afa56bfca714780e45532760d64cd53b65b
# good: [9afbe1ce2403c7d097bfaafcc5b27950040f7608] Merge remote-tracking branch 'y2038/y2038'
git bisect good 9afbe1ce2403c7d097bfaafcc5b27950040f7608
# bad: [a91ed664749cbec0325ef9da7d12619d9bb72e2d] kernel: tighten rules for ACCESS ONCE
git bisect bad a91ed664749cbec0325ef9da7d12619d9bb72e2d
# good: [e3865cc4a17e979e6b2f26af026686fae5567096] x86/xen/p2m: Replace ACCESS_ONCE with READ_ONCE
git bisect good e3865cc4a17e979e6b2f26af026686fae5567096
# good: [e2579c6f22ee0a43394d603cef6989dca98c5610] mm/gup: Replace ACCESS_ONCE with READ_ONCE
git bisect good e2579c6f22ee0a43394d603cef6989dca98c5610
# first bad commit: [a91ed664749cbec0325ef9da7d12619d9bb72e2d] kernel: tighten rules for ACCESS ONCE

Maybe the ACCESS_ONCE in the affected file should be replaced with READ_ONCE ?

Guenter
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