Date: Fri, 29 Sep 2023 18:24:17 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: John <jwd@freebsd.org> Cc: "Freebsd-Net@FreeBSD.org" <freebsd-net@freebsd.org> Subject: Re: kernel crash: devctl set driver -f mlx5_core6 ppt Message-ID: <ZRbsIcTjBIvfXlnX@kib.kiev.ua> In-Reply-To: <ZRZTXuCS9GS-pu4Q@FreeBSD.org> References: <ZRZTXuCS9GS-pu4Q@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, Sep 29, 2023 at 04:32:30AM +0000, John wrote: > Hi Folks, > > Working against 13.2-STABLE. > > I have a chance to get some bhyve VMs running on new hardware > with Mellanox 100Gb/s cards. After creating VF entries with iovctl > at boottime, a devctl command to detach the mlx5 driver and attach > the ppt driver causes the kernel to crash: > > # devctl set driver -f mlx5_core6 ppt > > backtrace here: https://people.freebsd.org/~jwd/mlx5.dump.txt What is the line number for pci_iov_detach_method+0x5e? Better, load vmcore into debugger and get the backtrace from kgdb. > > If I create the VF in ppt mode I can correctly detach > the ppt driver and attach the mlx5 driver. > > Also of note, if multiple VFs are created and a single > VF is targeted for the detach operation, all VFs are operated > on. It seems the VFs are not seen as individual entities > but a group of children in detach_method().
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ZRbsIcTjBIvfXlnX>