[Debian] fatal "Cannot allocate memory" when doing "cat /proc/self/mountinfo"

Corin Langosch info at corinlangosch.com
Tue Jan 10 15:34:58 EST 2012


Hi there,

on a up-to-date debian squeeze system running a "cat 
/proc/self/mountinfo" inside a guest results in "Cannot allocate memory".

What really makes it evil: the page cache of the whole machine is 
flushed and all swap space available consumed. This effectively causes 
the whole system to freeze because of the high load / disk io.

I hit this bug when using puppet, which does a read of 
/proc/self/mountinfo to detect where selinux is mounted.

I also filed a debian bug report here: 
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=655385

Anyone else hit by this problem?

Corin
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