cvs commit: src/sys/netinet tcp_input.c

Joerg Sonnenberger joerg at
Thu Apr 19 08:33:42 PDT 2007

On Wed, Apr 18, 2007 at 08:36:32PM -0700, Matthew Dillon wrote:
>     It is starting to make more sense.  I think what is happening is that
>     a callout timer is getting held up long enough for the TCP state to
>     change radically, due to the huge netstat -an, whos data is being loaded
>     via a sysctl.  I committed a fix for one related problem to HEAD but I
>     don't know if it is the one causing the crash.  Another possibility is
>     that the callout code is not properly detecting when a callout gets
>     ripped out from under it after blocking on the big giant lock.

Can't you just explicitly release and reacquire giant in the sysctl? It
should be MP safe already.


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