grsecurity forums

We have several Debian Lenny i386 backup servers running daily rsync on quite big data set. Every few days random server crashes with the following oops:

Code: Select all

PAX: refcount overflow detected in: rsync:2128, uid/euid: 0/0

Unfortunately I do not have the full trace handy.

I see a very similar issue is discussed here: http://bugs.gentoo.org/256067

Other somewhat similar issues:
viewtopic.php?f=3&t=2464
viewtopic.php?f=3&t=2342
viewtopic.php?f=3&t=2325

We are running Linux 2.6.36.2 x85_64, grsecurity-2.2.1-2.6.36.2-201012092111.patch & rsync 3.0.7 (32 bit user space). What else is need to better diagnose the problem?

We need your vmlinux (not vmlinuz) and the OOPs report to debug what specific reference counter was overflowed.

-Brad

Hello Brad,

I sent you the rquired info in a PM.

Thanks!

-George

thanks for the report, it's a false positive in ext4 (there're several atomics in fact that are not refcounts), will be fixed in the next patch.