Mailing List Archive: Fwd: libxenserver crash

Forwarding a question asked on xenserver list.

---------- Forwarded message ----------
From: Shakeel Butt <shakeel.butt@gmail.com>
Date: Mon, Feb 24, 2014 at 6:10 PM
Subject: libxenserver crash
To: "xs-devel@lists.xenserver.org" <xs-devel@lists.xenserver.org>

Hi all,

I am trying to use libxenserver from XenServer 6.2.0 SDK but it is
crashing whenever I tried to free the records returned by
libxenserver. More specifically the program is crashing on the
following line for all the modules having function like
"*_record_map_free".

*_record_opt_free(map->contents[i].key);

On further investigation, in "xen_common.c::parse_into" the key is
just a malloc(ed) string but *_record_opt_free is assuming that the
key is of type struct *_record_opt and try to access its field which
is crashing.

Is this known issue or am I missing something?

thanks,
Shakeel

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(Already replied on the xenserver list, but also copying the answer here)

This seems to be a bug in the SDK code. I'll rectify it in one of the upcoming hotfixes, in the meantime I'm afraid you'll probably have to modify the source and in the xen_<class>_xen_<class>_record_map_free calls substitute the xen_<class>_record_opt_free(map->contents[i].key) with xen_<class>_free(map->contents[i].key).

> -----Original Message-----
> From: xen-api-bounces@lists.xen.org [mailto:xen-api-
> bounces@lists.xen.org] On Behalf Of Shakeel Butt
> Sent: 25 February 2014 11:37 PM
> To: xen-api@lists.xen.org
> Subject: [Xen-API] Fwd: libxenserver crash
>
> Forwarding a question asked on xenserver list.
>
>
> ---------- Forwarded message ----------
> From: Shakeel Butt <shakeel.butt@gmail.com>
> Date: Mon, Feb 24, 2014 at 6:10 PM
> Subject: libxenserver crash
> To: "xs-devel@lists.xenserver.org" <xs-devel@lists.xenserver.org>
>
>
> Hi all,
>
> I am trying to use libxenserver from XenServer 6.2.0 SDK but it is crashing
> whenever I tried to free the records returned by libxenserver. More
> specifically the program is crashing on the following line for all the modules
> having function like "*_record_map_free".
>
> *_record_opt_free(map->contents[i].key);
>
> On further investigation, in "xen_common.c::parse_into" the key is just a
> malloc(ed) string but *_record_opt_free is assuming that the key is of type
> struct *_record_opt and try to access its field which is crashing.
>
> Is this known issue or am I missing something?
>
> thanks,
> Shakeel
>
> _______________________________________________
> Xen-api mailing list
> Xen-api@lists.xen.org
> http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api

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