This is a note to let you know that I've just added the patch titled drm/i915: prevent crash with .disable_display parameter to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-i915-prevent-crash-with-.disable_display-parameter.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 27892bbdc9233f33bf0f44e08aab8f12e0dec142 Mon Sep 17 00:00:00 2001 From: Clint Taylor <clinton.a.taylor@xxxxxxxxx> Date: Wed, 18 Jan 2017 13:38:43 -0800 Subject: drm/i915: prevent crash with .disable_display parameter From: Clint Taylor <clinton.a.taylor@xxxxxxxxx> commit 27892bbdc9233f33bf0f44e08aab8f12e0dec142 upstream. The .disable_display parameter was causing a fatal crash when fbdev was dereferenced during driver init. V1: protection in i915_drv.c V2: Moved protection to intel_fbdev.c Fixes: 43cee314345a ("drm/i915/fbdev: Limit the global async-domain synchronization") Testcase: igt/drv_module_reload/basic-no-display Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Signed-off-by: Clint Taylor <clinton.a.taylor@xxxxxxxxx> Link: http://patchwork.freedesktop.org/patch/msgid/1484775523-29428-1-git-send-email-clinton.a.taylor@xxxxxxxxx Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Lukas Wunner <lukas@xxxxxxxxx> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> (cherry picked from commit 5b8cd0755f8a06a851c436a013e7be0823fb155a) Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_fbdev.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -745,6 +745,9 @@ void intel_fbdev_initial_config_async(st { struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; + if (!ifbdev) + return; + ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); } Patches currently in stable-queue which might be from clinton.a.taylor@xxxxxxxxx are queue-4.9/drm-i915-prevent-crash-with-.disable_display-parameter.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html