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-rw-r--r--fs/openpromfs/inode.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index 464e2bce0203..c0cbe97cdc60 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -448,10 +448,11 @@ static ssize_t property_write(struct file *filp, const char __user *buf,
*q |= simple_strtoul (tmp, NULL, 16);
buf += last_cnt;
} else {
- char tchars[17]; /* XXX yuck... */
+ char tchars[2 * sizeof(long) + 1];
- if (copy_from_user(tchars, buf, 16))
+ if (copy_from_user(tchars, buf, sizeof(tchars) - 1))
return -EFAULT;
+ tchars[sizeof(tchars) - 1] = '\0';
*q = simple_strtoul (tchars, NULL, 16);
buf += 9;
}