linux-kernel - [PATCH] drm/atomic: fix null dereference

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Message-Id: <1436635479-1460-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Sat, 11 Jul 2015 22:54:39 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	David Airlie <airlied@...ux.ie>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH] drm/atomic: fix null dereference

We are checking the size of e->event but we were doing it when e is
known to be NULL.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
 drivers/gpu/drm/drm_atomic.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index acebd16..51d3a85 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1311,7 +1311,6 @@ static struct drm_pending_vblank_event *create_vblank_event(
 	e = kzalloc(sizeof *e, GFP_KERNEL);
 	if (e == NULL) {
 		spin_lock_irqsave(&dev->event_lock, flags);
-		file_priv->event_space += sizeof e->event;
 		spin_unlock_irqrestore(&dev->event_lock, flags);
 		goto out;
 	}
-- 
1.8.1.2

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