
We check whether the variable machine is NULL or not before accessing it. If machine is NULL, exit QEMU with an error, this can avoids a segfault error. Markus Armbruster <armbru@redhat.com> adds that the segfault can be reproduced as follows: $ qemu-system-xtensa -cpu help Signed-off-by: Dunrong Huang <riegamaths@gmail.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Read the documentation in qemu-doc.html or on http://wiki.qemu.org - QEMU team
Description