target/linux/bcm27xx/patches-4.19/950-0183-vcsm-Fix-an-NULL-dereference-in-the-import_dmabuf-er.patch


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From 654ca15f2234ce3677ed7c9eef5de588285b529a Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 14 Nov 2018 11:54:46 +0000
Subject: [PATCH] vcsm: Fix an NULL dereference in the import_dmabuf
 error path

resource was dereferenced even though it was NULL.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
 drivers/char/broadcom/vc_sm/vmcs_sm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/char/broadcom/vc_sm/vmcs_sm.c
+++ b/drivers/char/broadcom/vc_sm/vmcs_sm.c
@@ -2315,8 +2315,8 @@ int vc_sm_ioctl_import_dmabuf(struct sm_
 	return 0;
 
 error:
-	resource->res_stats[IMPORT_FAIL]++;
 	if (resource) {
+		resource->res_stats[IMPORT_FAIL]++;
 		vc_sm_resource_deceased(resource, 1);
 		kfree(resource);
 	}