On 7/2/19 6:00 PM, Christoph Hellwig wrote: > On Tue, Jul 02, 2019 at 12:37:59PM -0600, Jens Axboe wrote: >>> I couldn't get that to boot in my test systems even with mainline, >>> but that seems to be do to systemd waiting for some crap not supported >>> in the config. >>> >>> But with my usual test config I've just completed a test run with >>> KASAN enabled on a VWC=1 driver with no issues, so this keeps puzzling >>> me. >> >> Let me know what you want me to try. I can't reproduce it in qemu, but >> it's 100% on my laptop. My qemu drives also have VWC=1, so it's not >> (just) that. > > I seriously have no idea unfortunately. It works fine for me both > on qemu and on a real WD SN720 drive on my laptop. Just for curiosity > you could try to pad the bio structure and see if bloating it to the > old size makes any difference. No change with the padding, put it in the same place. Still insta crash before I get to login prompt, or right after I login and run sync. > The other things that comes to mind is that when Johannes removed > BIO_SEG_VALID there also were some unexplainable side effects, > I'll look into seeing if there was any similarity. Do you have a link? I'll try and poke a bit here. -- Jens Axboe
