samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: sde: protect file private structure with mutex lock

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Access file private data structures inside the
mutex lock only to avoid use-after-free issues.

Change-Id: If70731f517bcb47d4515f131fecafe702064cb45
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>
This commit is contained in:
Krishna Manikandan
2021-10-08 10:25:24 +05:30
committed by Gerrit - the friendly Code Review server
parent a6400b2c81
commit 45380adf38
1 changed files with 2 additions and 1 deletions
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3
msm/msm_drv.c
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@@ -1443,7 +1443,7 @@ void msm_mode_object_event_notify(struct drm_mode_object *obj,
static int msm_release(struct inode *inode, struct file *filp) static int msm_release(struct inode *inode, struct file *filp)
{ {
struct drm_file *file_priv = filp->private_data; struct drm_file *file_priv;
struct drm_minor *minor; struct drm_minor *minor;
struct drm_device *dev; struct drm_device *dev;
struct msm_drm_private *priv; struct msm_drm_private *priv;
@@ -1455,6 +1455,7 @@ static int msm_release(struct inode *inode, struct file *filp)
mutex_lock(&msm_release_lock); mutex_lock(&msm_release_lock);
file_priv = filp->private_data;
if (!file_priv) { if (!file_priv) {
ret = -EINVAL; ret = -EINVAL;
goto end; goto end;