Comment 6 for bug 1663364

 *** Error in `/usr/sbin/libvirtd': malloc(): memory corruption: 0x00005560f082e8d0 ***
 ======= Backtrace: =========
 /lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7fd02d8337e5]
 /lib/x86_64-linux-gnu/libc.so.6(+0x8181e)[0x7fd02d83d81e]
 /lib/x86_64-linux-gnu/libc.so.6(__libc_malloc+0x54)[0x7fd02d83f5d4]
 /lib/x86_64-linux-gnu/libc.so.6(realloc+0x358)[0x7fd02d83fe68]
 /lib/x86_64-linux-gnu/libc.so.6(+0xe53a2)[0x7fd02d8a13a2]
 /lib/x86_64-linux-gnu/libc.so.6(regexec+0xb3)[0x7fd02d8a39c3]
 /usr/lib/x86_64-linux-gnu/libvirt.so.0(virLogProbablyLogMessage+0x1f)[0x7fd02e241a5f]

 1299 bool virLogProbablyLogMessage(const char *str)
 1300 {
 1301 bool ret = false;
 1302 if (!virLogRegex)
 1303 return false;
 1304 if (regexec(virLogRegex, str, 0, NULL, 0) == 0) << Here >>
 1305 ret = true;
 1306 return ret;
 1307 }