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| author |   Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2015-10-21 11:48:25 -0400 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2015-10-23 06:49:29 +0200 |
| commit | e33d4f13d21e9f604194ebc8730077ff39916c50 (patch) | |
| tree | 8a23a63e2b4240124c3ee55addf0c1e59fba00eb /net/ipv4/xfrm4_policy.c | |
| parent | xfrm: Let the flowcache handle its size by default. (diff) | |
| download | wireguard-linux-e33d4f13d21e9f604194ebc8730077ff39916c50.tar.xz wireguard-linux-e33d4f13d21e9f604194ebc8730077ff39916c50.zip | |
xfrm: Fix unaligned access to stats in copy_to_user_state()
On sparc, deleting established SAs (e.g., by restarting ipsec)
results in unaligned access messages via xfrm_del_sa ->
km_state_notify -> xfrm_send_state_notify().
Even though struct xfrm_usersa_info is aligned on 8-byte boundaries,
netlink attributes are fundamentally only 4 byte aligned, and this
cannot be changed for nla_data() that is passed up to userspace.
As a result, the put_unaligned() macro needs to be used to
set up potentially unaligned fields such as the xfrm_stats in
copy_to_user_state()
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/xfrm4_policy.c')
0 files changed, 0 insertions, 0 deletions