Why system logs are showing many call traces with 'tcp_fastretrans_alert' ?
Issue
- After updating to RHEL 6.4
kernel-2.6.32-358.14.1.el6, system logs are full of call traces like below:
------------[ cut here ]------------
WARNING: at net/ipv4/tcp_input.c:2976 tcp_fastretrans_alert+0x3a1/0x10f0() (Tainted: G W --------------- )
Pid: 4471, comm: processname Tainted: G W --------------- 2.6.32-358.14.1.el6.x86_64 #1
Call Trace:
[<ffffffff8106e307>] ? warn_slowpath_common+0x87/0xc0
[<ffffffff8106e35a>] ? warn_slowpath_null+0x1a/0x20
[<ffffffff81495db1>] ? tcp_fastretrans_alert+0x3a1/0x10f0
[<ffffffff8149718c>] ? tcp_ack+0x68c/0x12c0
[<ffffffff81499d00>] ? tcp_transmit_skb+0x400/0x7b0
[<ffffffff8149b6a9>] ? tcp_send_ack+0xd9/0x120
Environment
- Red Hat Enterprise Linux 6.4
- Kernel
2.6.32-358.14.1.el6or earlier
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Close
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.