On Mon, Jan 20, 2020 at 12:51:00PM +0000, Andrew Doran wrote: > This also happened the last time I touched rw_downgrade(), and I backed out > the change then, but both times I don't see the bug. I have some questions:
2 amd64 boxes, let's call them a) and b) > - Are you running DIAGNOSTIC and/or LOCKDEBUG? I would be very interested a) standard GENERIC kernel, so just DIAGNOSTIC b) neither(!) > to see what happens with a LOCKDEBUG kernel here. I'll try on b) in a minute > - Do you have an ATI Radeon graphics chip? a) no: genfb0 at pci10 dev 3 function 0: Matrox MGA G200eW b) yes: vga0 at pci3 dev 0 function 0: ATI Technologies Radeon X300 (RV370) > - Are you using ZFS? no (a nor b) Cheers, Patrick