Am 22.09.2018 um 23:40 schrieb Bart Van Assche: > On 9/18/18 11:10 PM, Stefan Priebe - Profihost AG wrote: >> after upgrading the aacraid driver / kernel from aacraid 50792 to >> aacraid 50877. > > The aacraid driver version was updated to 50792 in commit 0662cc968ace > ("scsi: aacraid: Update driver version") and to 50877 in commit > 1cdb74b80f93 ("scsi: aacraid: Update driver version to 50877"). That > means that the regression you encountered got introduced after commit > 0662cc968ace. 114 changes got checked in after that commit. That's too > much to find the root cause by rereading all these changes. Is there any > way to trigger the problem faster such that it becomes feasible to run a > bisect? Sadly i'm not able. May be also something else in the kernel has changed. I'm now trying the original out of tree driver from microsemi / adaptec: Adaptec aacraid driver 1.2.1.56008src No idea how those driver versions corespond to the kernel ones. Greets, Stefan > $ git log 0662cc968ace..master drivers/scsi/aacraid | grep -c ^commit > 114 > > Bart.