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Hi All,
I got a similar issue with no final resolution.
http://archive.linuxvirtualserver.org/html/lvs-users/2010-01/msg00049.html
I can't respond to the given mail-thread as its an old one and I am
new joiner.
No one is replying as yet to my mail; so thought like updating same.
On Fri, May 3, 2013 at 4:28 PM, Dev Ankzz <ankzzdev@xxxxxxxxx> wrote:
> Hi All,
>
> ipvsadm-1.26 reports error as "*Invalid operation. Possibly wrong module
> version, address not unicast, ...*" for a valid request with option "-ln
> -t".
>
> *Ex*:
> # ipvsadm -ln -t a.b.c.d:http
> Invalid operation. Possibly wrong module version, address not unicast, ...
>
>
> *Bug details*:
>
> # ipvsadm -l
> IP Virtual Server version 1.2.1 (size=131072)
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP a.b.c.d:http wrr
> -> w.x.y.z:http Masq 100 0 0
>
> # ipvsadm -ln -t a.b.c.d:http
> Invalid operation. Possibly wrong module version, address not unicast, ...
>
> # which gcc
> /usr/bin/gcc
> # gcc --version
> gcc (GCC) 4.1.1
> Copyright (C) 2006 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions. There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
> #
>
> *RCA:*
>
> In lipipvs.c tsvc variable was not getting initialized. Field members were
> set to junk values. ipvs_nl_fill_service_attr was used to create message
> using these junk values too. leading to this issue.
>
> *Fix:*
> Initializing the structure variable to 0 solves the issue.
>
> *Diff for the fix:*
>
> diff -urNp ipvsadm-1.26/libipvs/libipvs.c ipvsadm-1.26_lb/libipvs/libipvs.c
> --- ipvsadm-1.26/libipvs/libipvs.c 2011-02-06 18:38:57.000000000 -0800
> +++ ipvsadm-1.26_lb/libipvs/libipvs.c 2013-05-03 02:57:08.000000000 -0700
> @@ -921,6 +921,7 @@ ipvs_get_service(__u32 fwmark, __u16 af,
> struct ip_vs_get_services *get;
> struct nl_msg *msg;
> ipvs_service_t tsvc;
> + memset(&tsvc, 0, sizeof(ipvs_service_t));
> tsvc.fwmark = fwmark;
> tsvc.af = af;
> tsvc.protocol= protocol;
>
>
>
> *Note : *Works fine with gcc-4.3.2. It initializes uninitialized data
> structure members. So issue is not seen here.
>
> -------------------------------------------------
>
> I am new to this mailing-list but wanted to contribute. If I am posting at
> the wrong place, my sincere apologies. Would request to guide me to correct
> link or mailing list.
>
> Thanks and Regards,
> Ankit
>
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