[PATCH net-next 2/2] xfrm: Fix unaligned access in xfrm_notify_sa() for DELSA
From: Sowmini Varadhan <hidden>
Date: 2015-10-19 21:24:44
Also in:
lkml, netdev
Subsystem:
networking [general], networking [ipsec], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Steffen Klassert, Herbert Xu, Linus Torvalds
On sparc, deleting established SAs (e.g., by restarting ipsec at the peer) results in unaligned access messages via xfrm_del_sa -> km_state_notify -> xfrm_send_state_notify(). Use an aligned pointer to xfrm_usersa_info for this case. Signed-off-by: Sowmini Varadhan <redacted> --- net/xfrm/xfrm_user.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index a8de9e3..158ef4a 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c@@ -2659,7 +2659,7 @@ static int xfrm_notify_sa(struct xfrm_state *x, const struct km_event *c) if (attr == NULL) goto out_free_skb; - p = nla_data(attr); + p = PTR_ALIGN(nla_data(attr), __alignof__(*p)); } err = copy_to_user_state_extra(x, p, skb); if (err)
--
1.7.1