On 25.4.2012, at 21.30, David Warden wrote: >>> Apr 25 09:56:26 wardentest3 dovecot: service=indexer-worker user=warden >>> rip= Error: open(/proc/self/io) failed: Permission >> >> Does the attached patch fix it? > > The error is still logged, but is that intentional on your part? It looks > like the patch logs the failure to open() when the error returned is anything > other than ENOENT and in my case the error is EACCESS. Other than that it > looks like it correctly disables accessing that file.
The patch intended to open the /proc/self/io immediately at startup while still running as root. Anyway, now that I'm testing it again myself, I see that it's supposed to work even without the patch, because /proc/self/io's permissions change after seteuid(). I noticed similar errors happening somewhat randomly in another CentOS 6.2 system. Changing the kernel fixed it. (Downgrading at least worked, possibly upgrading might also.)
