linux-kernel - Crashes in -next due to 'mm, page_alloc: remove fair zone allocation policy'

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Message-ID: <20160624060533.GA9507@roeck-us.net>
Date:	Thu, 23 Jun 2016 23:05:33 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Mel Gorman <mgorman@...hsingularity.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Vlastimil Babka <vbabka@...e.cz>
Subject: Crashes in -next due to 'mm, page_alloc: remove fair zone allocation
 policy'

Hi,

I see a lot of crashes with various architectures in next-20160623.
I bisected mips and sh; both bisect log point to the same patch.
Bisect log is attached. arm, ppc, and x86 images crash as well,
but I did not confirm if the same patch is the culprit there.

I tried to revert the patch, but that did not work due to subsequent patches
affecting the same code.

Guenter

---
# bad: [5c4d1ca9cfa71d9515ce5946cfc6497d22b1108e] Add linux-next specific files for 20160623
# good: [33688abb2802ff3a230bd2441f765477b94cc89e] Linux 4.7-rc4
git bisect start 'HEAD' 'v4.7-rc4'
# good: [0cc6a3a989f351112e1b8534f787b19a125b6281] Merge remote-tracking branch 'drm/drm-next'
git bisect good 0cc6a3a989f351112e1b8534f787b19a125b6281
# good: [72e9d226a2de83374fc66e59955a4d34c34c0c0f] Merge remote-tracking branch 'clockevents/clockevents/next'
git bisect good 72e9d226a2de83374fc66e59955a4d34c34c0c0f
# good: [0d35ad6e1a47d9951249542c90038039730f2cc4] Merge remote-tracking branch 'staging/staging-next'
git bisect good 0d35ad6e1a47d9951249542c90038039730f2cc4
# good: [9b5c3f08e656e53b226c4763a111c85675b1e651] Merge remote-tracking branch 'coresight/next'
git bisect good 9b5c3f08e656e53b226c4763a111c85675b1e651
# good: [760dfb53d9c2a81ef36895a12f7cabdb69cabf54] shmem, thp: respect MADV_{NO,}HUGEPAGE for file mappings
git bisect good 760dfb53d9c2a81ef36895a12f7cabdb69cabf54
# bad: [d664b7e1455775b014abafcf85134573c496e2ef] samples/kprobe: convert the printk to pr_info/pr_err
git bisect bad d664b7e1455775b014abafcf85134573c496e2ef
# good: [692ac72dc26d4735abefdba0876049710d1e57f8] mm, vmscan: add classzone information to tracepoints
git bisect good 692ac72dc26d4735abefdba0876049710d1e57f8
# bad: [78aa21d400775ad5d6df41209369430114c7f56a] proc_oom_score: remove tasklist_lock and pid_alive()
git bisect bad 78aa21d400775ad5d6df41209369430114c7f56a
# bad: [e7a21d36c970ce6506dfbde2e34d773ff492280a] mm, oom_adj: make sure processes sharing mm have same view of oom_score_adj
git bisect bad e7a21d36c970ce6506dfbde2e34d773ff492280a
# bad: [9c22c0aef92a9dd9cead68e4796bb09253a3efb6] thp: fix comments of __pmd_trans_huge_lock()
git bisect bad 9c22c0aef92a9dd9cead68e4796bb09253a3efb6
# bad: [76a3308aea2ccb472eeebdf78dd27590b8ee8541] mm: page_alloc: cache the last node whose dirty limit is reached
git bisect bad 76a3308aea2ccb472eeebdf78dd27590b8ee8541
# bad: [089fcc128177aaa80935ad21d522a5be11007f9c] mm, page_alloc: remove fair zone allocation policy
git bisect bad 089fcc128177aaa80935ad21d522a5be11007f9c
# first bad commit: [089fcc128177aaa80935ad21d522a5be11007f9c] mm, page_alloc: remove fair zone allocation policy