On Mon, 2017-08-07 at 18:06 -0400, Laurence Oberman wrote: > With [mq-deadline] enabled on stock I dont see them at all and it behaves. > > Now with Ming's patches if we enable [mq-deadline] we DO see the clone > failures and the hard lockup so we have opposit behaviour with the > scheduler choice and we have the hard lockup. > > On Ming's kernel with [none] we are well behaved and that was my original > focus, testing on [none] and hence my Tested-by: pass. > > So more investigation is needed here. Hello Laurence, Was debugfs enabled on your test setup? Had you perhaps collected the contents of the block layer debugfs files after the lockup occurred, e.g. as follows: (cd /sys/kernel/debug/block && find -type f | xargs grep -aH '')? Thanks, Bart.
