CVS commit: src/sys/arch/xen/xen

["Jean-Yves Migeon" <jym%netbsd.org@localhost>]

Module Name:    src
Committed By:   jym
Date:           Mon Apr 25 00:14:06 UTC 2011

Modified Files:
        src/sys/arch/xen/xen: xennetback_xenbus.c

Log Message:
Check that xvif(4) is not already connected before proceeding in the
XenbusStateConnected mode. Under rare occasions, the xenbus watcher
can fire multiple times, overwriting the I/O ring memory mappings with
invalid values. This will lead sooner or later to dom0 panic().

Will ask for pullup. FWIW, xbdback(4) is not affected.


To generate a diff of this commit:
cvs rdiff -u -r1.42 -r1.43 src/sys/arch/xen/xen/xennetback_xenbus.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.