CVS commit: src/sys

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

Module Name:    src
Committed By:   ozaki-r
Date:           Thu Jul 28 09:03:51 UTC 2016

Modified Files:
        src/sys/netinet: if_arp.c in.c
        src/sys/netinet6: in6.c nd6_nbr.c

Log Message:
Fix panic on adding/deleting IP addresses under network load

Adding and deleting IP addresses aren't serialized with other network
opeartions, e.g., forwarding packets. So if we add or delete an IP
address under network load, a kernel panic may happen on manipulating
network-related shared objects such as rtentry and rtcache.

To avoid such panicks, we still need to hold softnet_lock in in_control
and in6_control that are called via ioctl and do network-related operations
including IP address additions/deletions.

Fix PR kern/51356


To generate a diff of this commit:
cvs rdiff -u -r1.219 -r1.220 src/sys/netinet/if_arp.c
cvs rdiff -u -r1.176 -r1.177 src/sys/netinet/in.c
cvs rdiff -u -r1.211 -r1.212 src/sys/netinet6/in6.c
cvs rdiff -u -r1.125 -r1.126 src/sys/netinet6/nd6_nbr.c

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