On Thu, Apr 13, 2017 at 11:48:35AM +0200, Christoph Hellwig wrote: > On Thu, Apr 13, 2017 at 10:06:29AM +0200, Johannes Thumshirn wrote: > > Doing a mkfs.btrfs on a (qemu emulated) PCIe NVMe causes a kernel panic > > in nvme_setup_prps() because the dma_len will drop below zero but the > > length not. > > I think we should also turns this into a WARN_ON_ONCE + error return.. > > But do you have an exact btrfsprogs version and command line? I do a lot > of testing that involves mkfs.btrfs on nvme and haven't seen it.. Ah one detail I forgot: mkfs.xfs _does_ work. Haven't checked ext4 though. -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
