On Tue, 4 Jul 2017 11:57:37 -0400 Sinan Kaya <okaya@xxxxxxxxxxxxxx> wrote: > Hi, > > On 7/4/2017 11:32 AM, Bjorn Helgaas wrote: > > [+cc linux-pci] > > > > Thanks very much for the detailed problem report, Wim! I'm taking the > > liberty to forward to the linux-pci list in case others trip over the > > same thing. > > > > So, the spec is lying :) and reality doesn't match theory. > > "Per the ECN mentioned below, all PCIe Receivers are expected to support > Extended Tags" > > > The problem is not specific to this piece of h/w. I did pin-point the > > issue to specific kernel code commit > <snip> > > > 60db3a4d8cc9073cf56264785197ba75ee1caca4 > > * <wtenhave@hagen:55> git bisect good > > 60db3a4d8cc9073cf56264785197ba75ee1caca4 is the first bad commit > > commit 60db3a4d8cc9073cf56264785197ba75ee1caca4 > > Author: Sinan Kaya <okaya@xxxxxxxxxxxxxx> > > Date: Fri Jan 20 09:16:51 2017 -0500 > > > > PCI: Enable PCIe Extended Tags if supported > > > <snip> > > > 3. Boot and see it crash as soon it starts to operate on specific PCI > > Express Ethernet controller. > > > > I guess we have an endpoint/system with errata that needs to be blacklisted. > Can you please try another endpoint with the same system? > > You have conflicting information above. I want to understand whether it > is the endpoint or the system that needs to be blacklisted. Specific PCI Express ethernet are embedded on the systems mainboard. There's only one PCI Express that requires a riser card. It is empty. > Please also provide sudo lspci -vvv output from the system with the patch. > Sinan Detail (lspci -vvv) is added to RedHat filed bugzilla entry; BugID 1467674 since the info is rather large. https://bugzilla.redhat.com/show_bug.cgi?id=1467674 Enjoy, - Wim.
