AUDIT: Round up audit skb expansion to AUDIT_BUFSIZ.

Otherwise, we will be repeatedly reallocating, even if we're only
adding a few bytes at a time. Pointed out by Steve Grubb.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/audit.c b/kernel/audit.c
index 060b554f481e..187164572bd0 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -670,7 +670,7 @@ static void audit_log_vformat(struct audit_buffer *ab, const char *fmt,
                 /* The printk buffer is 1024 bytes long, so if we get
                  * here and AUDIT_BUFSIZ is at least 1024, then we can
                  * log everything that printk could have logged. */
-                avail = audit_expand(ab, 1+len-avail);
+                avail = audit_expand(ab, max_t(AUDIT_BUFSIZ, 1+len-avail));
                 if (!avail)
                         goto out;
                 len = vsnprintf(skb->tail, avail, fmt, args2);