[libvirt] Buffer overflow error when starting libvirtd

[Laine Stump]

On 08/11/2015 02:06 AM, Laine Stump wrote:
> On 08/11/2015 01:30 AM, Ján Tomko wrote:
>> On Mon, Aug 10, 2015 at 11:21:47PM -0400, Willard Dennis wrote:
>>> Compiled libvirt 1.2.18 on Ubuntu 12.04.5 (installed over 12.04 libvirt-bin
>>> 0.9.9 package files); when I try to start libvirtd, I get the following
>>> error / backtrace:
>>>
>>> $ sudo /usr/sbin/libvirtd
>>> *** stack smashing detected ***: /usr/sbin/libvirtd terminated
>>> ======= Backtrace: =========
>>> /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7f02fe6d3e57]
>>> /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x0)[0x7f02fe6d3e20]
>>> /usr/lib/libvirt.so.0(+0xaa359)[0x7f02fec4f359]
>>> /usr/lib/libvirt/connection-driver/libvirt_driver_nodedev.so(+0x99fe)[0x7f02f1fc59fe]
>>> /usr/lib/libvirt/connection-driver/libvirt_driver_nodedev.so(+0xa672)[0x7f02f1fc6672]
>>> /usr/lib/libvirt.so.0(virStateInitialize+0xaf)[0x7f02fed1cd2f]
>>> /usr/sbin/libvirtd(+0x17d80)[0x7f02ff98dd80]
>>> /usr/lib/libvirt.so.0(+0xd25d2)[0x7f02fec775d2]
>>> /lib/x86_64-linux-gnu/libpthread.so.0(+0x7e9a)[0x7f02fe98fe9a]
>>> /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f02fe6bd38d]
>>>
>>> Not sure if this may be a bug with 1.2.18, or a fault with my
>>> configure/compile/install process; please advise...
>> This has been reported last week:
>> https://www.redhat.com/archives/libvir-list/2015-August/msg00163.html
>> And here is the patch proposed to fix it, waiting on review:
>> https://www.redhat.com/archives/libvir-list/2015-August/msg00263.html
> Willard - If you're able to build libvirt and test that patch, it would
> be greatly appreciated.

Ah, wait. Actually I'm fairly certain that the patch that Jan refers to
will *not* fix the problem. The patch that I'd like to see tested is the
one that I posted just a few hours ago:

  https://www.redhat.com/archives/libvir-list/2015-August/msg00382.html