If drmModeGetConnector() fails in drmmode_output_detect(), we have to
reset the output_id to -1 too.
Yet another spot leading to a potential NULL dereference when handling
the mode_output member as output_id was != -1. Though, this case should
be very hard to hit.
Signed-off-by: Daniel Martin <consume.no...@gmail.com>
---
hw/xfree86/drivers/modesetting/drmmode_display.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c
b/hw/xfree86/drivers/modesetting/drmmode_display.c
index 404bb1dc2..3b8107359 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
@@ -1151,8 +1151,10 @@ drmmode_output_detect(xf86OutputPtr output)
drmmode_output->mode_output =
drmModeGetConnector(drmmode->fd, drmmode_output->output_id);
- if (!drmmode_output->mode_output)
+ if (!drmmode_output->mode_output) {
+ drmmode_output->output_id = -1;
return XF86OutputStatusDisconnected;
+ }
switch (drmmode_output->mode_output->connection) {
case DRM_MODE_CONNECTED:
--
2.13.6
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