[PATCH 1/3] nvmem: fix the out-of-range leak in read/write()

[Shunqian Zheng]

From: ZhengShunQian <zhen...@rock-chips.com>

The position to read/write must be less than max
register size.

Signed-off-by: ZhengShunQian <zhen...@rock-chips.com>
---
 drivers/nvmem/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index d3c6676..f4af8e5 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -67,7 +67,7 @@ static ssize_t bin_attr_nvmem_read(struct file *filp, struct 
kobject *kobj,
        int rc;
 
        /* Stop the user from reading */
-       if (pos > nvmem->size)
+       if (pos >= nvmem->size)
                return 0;
 
        if (pos + count > nvmem->size)
@@ -92,7 +92,7 @@ static ssize_t bin_attr_nvmem_write(struct file *filp, struct 
kobject *kobj,
        int rc;
 
        /* Stop the user from writing */
-       if (pos > nvmem->size)
+       if (pos >= nvmem->size)
                return 0;
 
        if (pos + count > nvmem->size)
-- 
1.9.1

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