Re: [libvirt] [PATCH v2] util: Fix stack smashing in virNetDevGetFamilyId

After commit 8708ca01c0d libvirtd consistently aborts with "stack smashing detected" when nodedev driver is initialized. This is caused by nlmsg_parse() being told that its array of nlattr* has CTRL_CMD_MAX (10) entries, when in fact it is declared to have CTRL_ATTR_MAX (8) entries. Since all the entries are initialized to NULL, the result is that nlmsg_parse is overwriting 2*(sizof(nlattr*)) bytes outside the array. Signed-off-by: Laine Stump <laine(a)laine.org&gt; --- V1 was posted by jdenemar. It fixed the problem, but it was changing the wrong line of code: https://www.redhat.com/archives/libvir-list/2017-September/msg00657.html