CVS commit: src/sys/netinet6

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Fri Apr 19 00:55:35 UTC 2024

Modified Files:
        src/sys/netinet6: ip6_output.c

Log Message:
ip6_output: Initialize plen for ip6_hopopts_input.

This funny little block in ip6_process_hopopts assumes it is
initialized as and behaves differently depending on whether it's zero
or not:

https://nxr.netbsd.org/xref/src/sys/netinet6/ip6_input.c?r=1.227#976

In the other call site, it is initialized to ip6->ip6_plen:

https://nxr.netbsd.org/xref/src/sys/netinet6/ip6_input.c?r=1.227#561

Reported-by: syzbot+587e3b707bdfe533283f%syzkaller.appspotmail.com@localhost
https://syzkaller.appspot.com/bug?extid=587e3b707bdfe533283f


To generate a diff of this commit:
cvs rdiff -u -r1.234 -r1.235 src/sys/netinet6/ip6_output.c

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