Hi Ard, Apologies for the non-follow-up - couldn't find the original patch. Your patch "crypto: ccm - switch to separate cbcmac driver" causes a BUG_ON when virtual stacks are used, in crypto_ccm_auth() is called, because you put odata/idata on the stack. What's going on there? I thought we knew we can't do that? Did I miss something? johannes