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| author | Marc-André Lureau <marcandre.lureau@gmail.com> | 2014-11-05 15:43:14 +0100 |
|---|---|---|
| committer | Amit Shah <amit.shah@redhat.com> | 2014-11-07 10:27:11 +0530 |
| commit | 7eb7311427a6e2a9e080c1224f86a897f077282f (patch) | |
| tree | 5fdf8404ad728224d55a160d8f2f5a3887856c38 /hw/char/virtio-serial-bus.c | |
| parent | 6e76d125f244e10676b917208f2a074729820246 (diff) | |
| download | qemu-7eb7311427a6e2a9e080c1224f86a897f077282f.zip qemu-7eb7311427a6e2a9e080c1224f86a897f077282f.tar.gz qemu-7eb7311427a6e2a9e080c1224f86a897f077282f.tar.bz2 | |
virtio-serial: avoid crash when port has no name
It seems "name" is not mandatory, and the following command line (based
on one generated by current libvirt) will crash qemu at start:
qemu-system-x86_64 \
-device virtio-serial-pci \
-device virtserialport,name=foo \
-device virtconsole
Program received signal SIGSEGV, Segmentation fault.
__strcmp_ssse3 () at ../sysdeps/x86_64/strcmp.S:210
210 movlpd (%rsi), %xmm2
Missing separate debuginfos, use: debuginfo-install
python-libs-2.7.5-13.fc20.x86_64
(gdb) bt
#0 __strcmp_ssse3 () at ../sysdeps/x86_64/strcmp.S:210
#1 0x000055555566bdc6 in find_port_by_name (name=0x0) at /home/elmarco/src/qemu/hw/char/virtio-serial-bus.c:67
Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Reviewed-by: Amos Kong <akong@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Diffstat (limited to 'hw/char/virtio-serial-bus.c')
| -rw-r--r-- | hw/char/virtio-serial-bus.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c index c6870f1..a7b1b68 100644 --- a/hw/char/virtio-serial-bus.c +++ b/hw/char/virtio-serial-bus.c @@ -871,7 +871,7 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp) return; } - if (find_port_by_name(port->name)) { + if (port->name != NULL && find_port_by_name(port->name)) { error_setg(errp, "virtio-serial-bus: A port already exists by name %s", port->name); return; |