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-rw-r--r--fs/proc/base.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 4f5745af8c19..01f7769da8e6 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -581,7 +581,7 @@ out_no_task:
#ifndef mem_write
/* This is a security hazard */
-static ssize_t mem_write(struct file * file, const char * buf,
+static ssize_t mem_write(struct file * file, const char __user *buf,
size_t count, loff_t *ppos)
{
int copied;