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xfrm: Fix memleak on xfrm state destroy

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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: cac2661c53 ("esp4: Avoid skb_cow_data whenever possible")
Reported-by: JD <[email protected]>
Reported-by: Paul Wouters <[email protected]>
Signed-off-by: Steffen Klassert <[email protected]>
This commit is contained in:
Steffen Klassert 2019-11-06 08:13:49 +01:00
commit 86c6739eda
1 changed files with 2 additions and 0 deletions
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2
net/xfrm/xfrm_state.c
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@ -495,6 +495,8 @@ static void ___xfrm_state_destroy(struct xfrm_state *x)
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);