double lock on socket

David Monro (
Thu, 25 Apr 1996 21:16:19 +1000 (EST)

I get the odd 'double lock on socket at xxxx' message. They seem to be coming
out of tcp_sendmsg. They seem to occur during reasonable heavy disk and net
traffic (eg compiling the kernel, latexing and dvipsing large files and
ghostviewing the result on a remote Xterminal all simultaneously). I am not
sure, but I have a feeling that it happens when my ppp link is busy as well - I
have only had four this month on kernels from 1.3.82 to 1.3.94, which isn't
much of a sample. I also got a 'double lock on device queue!' with 1.3.83. None
of these seem to have had any effect on sytem stability.

Hope this helps someone,