Don't forget that the earlier kernels are affected by Bug #1647400,
which does something even worse (hang the system). I've verified that it
affected my particular system before 4.4.0-59, and it may explain a
couple of lockups I had previously experienced during normal operation
when using previous kernels. -59 fixes the bug but introduces the
permature OOM kill issue; if it weren't for the kernels currently in
proposed (assuming they indeed fix this bug), I wouldn't really have a
reliable kernel at all to use.

With the 4.4.0-59 kernel, I got hit with two unexplained OOM kills, each
occurring within about 3 days of uptime. I then tested the -62 kernel in
proposed for just under 14 days and didn't see any OOM kills, and I've
now been testing -63 for a couple of days and haven't any issues yet.
However, it might help if anyone has an idea how the OOM kill bug might
be reliably reproduced. “5 working days” isn't very long to reliably be
sure the problem is solved otherwise; it took more than half that time
upon upgrading to -59 for me to hit the bug by chance.

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https://bugs.launchpad.net/bugs/1655842

Title:
  "Out of memory" errors after upgrade to 4.4.0-59

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