[PATCH v4.19.y] ip: fail fast on IP defrag errors

cerns that this could be legitimate padding. Signed-off-by: Peter Oskolkov Reviewed-by: Eric Dumazet Reviewed-by: Willem de Bruijn Signed-off-by: David S. Miller Signed-off-by: Zubin Mithra --- Backport Note: - Syzkaller reported a UAF, as 0ff89efb5246 ("ip: fail fast on IP defrag errors")

862591bf4("xfrm: skip policies marked as dead while rehashing")

Hello, Syzkaller has reported a crash here[1] for a slab OOB read in xfrm_hash_rebuild. Could the following 2 patches be applied in order to on 4.4.y? 6916fb3b10("xfrm: Ignore socket policies when rebuilding hash tables") 862591bf4f("xfrm: skip policies marked as dead while rehashing") [1] htt