xt_quota2: remove trailing junk which might have a digit in it

Signed-off-by: Sam Liddicott <sam@liddicott.com>

diff --git a/extensions/xt_quota2.c b/extensions/xt_quota2.c
index aa00207b19be9f5cfcac152692f343301c423931..52c88a18318415f2b8eb70d6fd58d39699a2c654 100644 (file)
--- a/extensions/xt_quota2.c
+++ b/extensions/xt_quota2.c
@@ -76,6 +76,8 @@ quota_proc_write(struct file *file, const char __user *input,
        if (copy_from_user(buf, input, size) != 0)
                return -EFAULT;
        buf[sizeof(buf)-1] = '\0';
+       if (size < sizeof(buf))
+               buf[size] = '\0';
 
        spin_lock_bh(&e->lock);
        e->quota = simple_strtoull(buf, NULL, 0);