From 0a40c5434b5143786f79b5f487969f457f0c8220 Mon Sep 17 00:00:00 2001
From: zhOu <974843735@qq.com>
Date: Thu, 7 Jan 2021 15:38:37 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Ddev=20=E6=96=87=E4=BB=B6?=
 =?UTF-8?q?=E5=A4=B9mmap=20bug?=
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---
 kernel/base/vm/los_vm_filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/base/vm/los_vm_filemap.c b/kernel/base/vm/los_vm_filemap.c
index 8b88e85d..b4c11d81 100644
--- a/kernel/base/vm/los_vm_filemap.c
+++ b/kernel/base/vm/los_vm_filemap.c
@@ -661,7 +661,7 @@ STATUS_T OsNamedMMap(struct file *filep, LosVmMapRegion *region)
             return LOS_ERRNO_VM_MAP_FAILED;
         }
     } else if (INODE_IS_DRIVER(inodePtr)) {
-        if (inodePtr->u.i_ops->mmap) {
+        if (inodePtr->u.i_ops && inodePtr->u.i_ops->mmap) {
             LOS_SetRegionTypeDev(region);
             return inodePtr->u.i_ops->mmap(filep, region);
         } else {
-- 
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