If the primary GPU driver has been loaded _after_ system as a module
then this logo memory is no longer valid.
Managed to crash the system by booting a box without a GPU and then
hotpluggin => BOOM.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/video/logo/logo.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/video/logo/logo.c b/drivers/video/logo/logo.c
index 080c35b..a26bb16 100644
--- a/drivers/video/logo/logo.c
+++ b/drivers/video/logo/logo.c
@@ -36,6 +36,9 @@ const struct linux_logo * __init_refok fb_find_logo(int depth)
if (nologo)
return NULL;
+ if (system_state != SYSTEM_BOOTING)
+ return NULL;
+
if (depth >= 1) {
#ifdef CONFIG_LOGO_LINUX_MONO
/* Generic Linux logo */
--
1.8.4.3
--
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