oom-kill looping

oom-kill looping

[Berend De Schouwer]

Hi,

I've got a machine that has been crashing more-or-less weekly due to
running out of memory.  I've noticed an oddity in oom-kill.  It loops
'Out of Memory: Killed process 12345 (abc).'  The same PID is listed
continuously.  This is with kernel 2.4.x.  With the 2.2 series it just
hung.

Is it a good idea to add checks oom_kill.c in badness() like:
  if is_not_runnable(p)
    return 0;
  if has_pending_term_or_kill(p)
    return 0;

and if so, would (p->state != 0) and signal_pending(p) be the way to do
it?  How would you check for just the SIGKILL or SIGTERM signal?

It takes about a week to trigger this OOM, so trials are slow.

--
Berend De Schouwer

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