Grant Wilson wrote:
> 2.6.14-rc1 oops on boot as a result of the patch "nvidiafb: Fallback to
> firmware EDID".
>
> This is because the call to fb_firmware_edid added by the patch may
> return NULL but this is not checked before trying to memcpy using this
> pointer resulting in the following oops:
>
Thanks. Try this patch.
Signed-off-by: Antonino Daplas <[email protected]>
---
diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c
--- a/drivers/video/nvidia/nv_i2c.c
+++ b/drivers/video/nvidia/nv_i2c.c
@@ -209,10 +209,13 @@ int nvidia_probe_i2c_connector(struct fb
if (!edid && conn == 1) {
/* try to get from firmware */
- edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
- if (edid)
- memcpy(edid, fb_firmware_edid(info->device),
- EDID_LENGTH);
+ const u8 *e = fb_firmware_edid(info->device);
+
+ if (e != NULL) {
+ edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
+ if (edid)
+ memcpy(edid, e, EDID_LENGTH);
+ }
}
if (out_edid)
-
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