Am Donnerstag, 18. Dezember 2014, 13:22:20 schrieb leroy christophe: Hi Christophe, > Le 18/12/2014 13:15, Stephan Mueller a écrit : > > Hi Herbert, > > > > While testing the vmsplice/splice interface of algif_hash I was made > > aware of the problem that data blobs larger than 16 pages do not seem to > > be hashed properly. > > > > For testing, a file is mmap()ed and handed to vmsplice / splice. If the > > file is smaller than 2**16, the interface returns the proper hash. > > However, when the file is larger, only the first 2**16 bytes seem to be > > used. > > > > When adding printk's to hash_sendpage, I see that this function is > > invoked exactly 16 times where the first 15 invocations have the > > MSG_MORE flag set and the last invocation does not have MSG_MORE. > > Hi Stephan, > > I have already noticed the same issue and proposed a patch, but I never > got any feedback and it has never been merged, allthought I pinged it a > few times. > > See https://lkml.org/lkml/2014/4/18/276 After testing, this patch does not work for me. The operation still stops after 16 pages. > > Christophe -- Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
