Client called me because can't access to the application. So login in system and surprise! I cant execute ps, ls and netstat commands and postgresql is down. These files has other owners.
The last lines in dmesg are like :
[21461.249801] ssh-scan: segfault at 0 ip 0000000008048e33 sp 00000000ffd12d10 error 4 in ssh-scan[8048000+c0000]
What could be the problem? And the solution?
The OS: Ubuntu Server 12.04LTS x64