From: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
commit 86c6739eda7d2a03f2db30cbee67a5fb81afa8ba upstream.
We leak the page that we use to create skb page fragments
when destroying the xfrm_state. Fix this by dropping a
page reference if a page was assigned to the xfrm_state.
Fixes: cac2661c53f3 ("esp4: Avoid skb_cow_data whenever possible")
Reported-by: JD <jdtxs00@xxxxxxxxx>
Reported-by: Paul Wouters <paul@xxxxxxxxx>
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/xfrm/xfrm_state.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -456,6 +456,8 @@ static void ___xfrm_state_destroy(struct
x->type->destructor(x);
xfrm_put_type(x->type);
}
+ if (x->xfrag.page)
+ put_page(x->xfrag.page);
xfrm_dev_state_free(x);
security_xfrm_state_free(x);
xfrm_state_free(x);
