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-rw-r--r--fs/sysfs/bin.c13
1 files changed, 3 insertions, 10 deletions
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c
index 93e0c02..9345806 100644
--- a/fs/sysfs/bin.c
+++ b/fs/sysfs/bin.c
@@ -157,14 +157,9 @@ static ssize_t write(struct file *file, const char __user *userbuf,
count = size - offs;
}
- temp = kmalloc(count, GFP_KERNEL);
- if (!temp)
- return -ENOMEM;
-
- if (copy_from_user(temp, userbuf, count)) {
- count = -EFAULT;
- goto out_free;
- }
+ temp = memdup_user(userbuf, count);
+ if (IS_ERR(temp))
+ return PTR_ERR(temp);
mutex_lock(&bb->mutex);
@@ -176,8 +171,6 @@ static ssize_t write(struct file *file, const char __user *userbuf,
if (count > 0)
*off = offs + count;
-out_free:
- kfree(temp);
return count;
}
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