On Fri, Jan 13, 2012 at 07:22:56AM +0100, Steffen Klassert wrote: > > I did not try to reproduce, but this looks like a race of the 'local out' > and the receive packet path. On 'lokal out' bottom halves are enabled, > so could be interrupted by the NET_RX_SOFTIRQ while doing a sha512_update. > The NET_RX_SOFTIRQ could invoke sha512_update too, that would corrupt the > hash value. My guess could be checked easily by disabling the bottom halves > before the percpu value is fetched. Good point. I'll send out a patch for Alexey to test. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- 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
