kernel-packages team mailing list archive

["Michael S. Fischer" <1327360@xxxxxxxxxxxxxxxxxx>]

$ uname -a
Linux REDACTED 3.2.0-45-generic #70-Ubuntu SMP Wed May 29 20:12:06 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ sudo grep xfs_btree_cur /proc/slabinfo 
xfs_btree_cur     26695461 26695461    208   39    2 : tunables    0    0    0 : slabdata 684499 684499      0

--

$ uname -a
Linux REDACTED 3.8.0-41-generic #60~precise1-Ubuntu SMP Fri May 16 00:18:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
$ sudo grep xfs_btree_cur /proc/slabinfo 
xfs_btree_cur        936    936    208   39    2 : tunables    0    0    0 : slabdata     24     24      0

-- 
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https://bugs.launchpad.net/bugs/1327360

Title:
  xfs_btree_cur leak

Status in “linux” package in Ubuntu:
  New

Bug description:
  There appears to be a kernel memory leak of xfs_btree_cur in recent
  Precise kernels (3.2.0-45 and -63 are affected, for sure).   The slab
  can grow unbounded; we've seen it grow larger than 32GB via slabtop.
  The affected hosts have XFS mounted on / (root filesystem).

  We have another host running 3.2.0-38 in which we do not see this
  problem (it has a 37TB XFS filesystem mounted, but not on root).

  Upgrading to the latest 3.8.0-41 kernel via linux-generic-lts-raring
  seems to resolve the issue.

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