System Hung After "TCP: too many of orphaned sockets" and "Out of socket memory" Errors
Issue
- System was forced offline after being unresponsive to logins. Inspection of log entries prior to the forced reboot show an ever increasing number of the following messages.
kernel: TCP: too many of orphaned sockets
kernel: Out of socket memory
login: FATAL: bad tty
Environment
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 5
- Improperly customized
net.ipv4.tcp_mem
sysctl
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