Kent, Jens, Christoph et al, please see this bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=109661 where Artem Tashkinov bisected his problems with 4.3 down to commit b54ffb73cadc ("block: remove bio_get_nr_vecs()") that you've all signed off on. (Also Tejun - maybe you can see what's up - maybe that error message tells you something) I'm not sure what's up with his machine, the disk doesn't seem to be anyuthing particularly unusual, it looks like a 1TB Seagate Barracuda: ata1.00: ATA-8: ST1000DM003-1CH162, CC44, max UDMA/133 which doesn't strike me as odd. Looking at the dmesg, it also looks like it's a pretty normal Sandybridge setup with Intel chipset. Artem, can you confirm? The PCI ID for the AHCI chip seems to be (INTEL, 0x1c02). Any ideas? Anybody? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html