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* NULL poniter dereference in isolate_lru_pages 2.6.39.1
@ 2011-07-07 15:53 Chris Pearson
  2011-07-08  5:14 ` Minchan Kim
  0 siblings, 1 reply; 10+ messages in thread
From: Chris Pearson @ 2011-07-07 15:53 UTC (permalink / raw)
  To: linux-mm

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see attached screenshots

NULL pointer dereference at 8

isolate_lru_pages
shrink_inactive_list
__lookup_tag
shrink_zone
shrink_slab
kswapd
zone_reclaim

These are from 3 different servers in the past week since we upgraded
a few hundred of them to 2.6.39.1.    They're under a steady few MB/s
of net and disk I/O load.

We have the following /proc adjustments:

kernel.shmmax = 135217728
fs.file-max = 65535
vm.swappiness = 10
vm.min_free_kbytes = 65535

[-- Attachment #2: npd-isolate_lru_pages.png --]
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[-- Attachment #3: npd-isolate_lru_pages-2.png --]
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[-- Attachment #4: npd-isolate_lru_pages-3.png --]
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^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2011-07-18 23:32 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-07-07 15:53 NULL poniter dereference in isolate_lru_pages 2.6.39.1 Chris Pearson
2011-07-08  5:14 ` Minchan Kim
2011-07-08 15:39   ` Chris Pearson
2011-07-10 23:05     ` Minchan Kim
2011-07-11 20:52       ` Chris Pearson
2011-07-12  0:16         ` Minchan Kim
2011-07-15  1:48           ` Chris Pearson
2011-07-18 22:48             ` Minchan Kim
2011-07-18 23:18               ` Andrew Morton
2011-07-18 23:32                 ` Minchan Kim

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