On Fri, May 01, 2020 at 03:06:26PM +0000, Luis Chamberlain wrote: > > You have access to a block device here, please use dev_warn() instead > > here for that, that makes it obvious as to what device a "concurrent > > blktrace" was attempted for. > > The block device may be empty, one example is for scsi-generic, but I'll > use buts->name. Is blktrace on /dev/sg something we intentionally support, or just by some accident of history? Given all the pains it causes I'd be tempted to just remove the support and see if anyone screams.