[Bug 220740] Host crash when do PF passthrough to KVM guest with some devices

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=220740

--- Comment #4 from Chen, Fan (farrah.chen@intel.com) ---
(In reply to Alex Williamson from comment #2)
> (In reply to Chen, Fan from comment #1)
> > I reproduced this issue on SPR, GNR, SRF, CWF.
> 
> Were there platforms that did not reproduce?

The only system I failed to reproduce is the one whose BIOS has no "Error
Injection Configuration" or "PCIE Error Enabling" is disabled. So I guess this
issue is platform independent.

> 
> > If we disable "PCIE Error Enabling" in BIOS, host will not crash.
> > 
> > After bisecting, the first bad commit is:
> > commit 2b938e3db335e3670475e31a722c2bee34748c5a (HEAD)
> ...
> > --- a/drivers/vfio/pci/vfio_pci_rdwr.c
> > +++ b/drivers/vfio/pci/vfio_pci_rdwr.c
> > @@ -16,6 +16,7 @@
> >  #include <linux/io.h>
> >  #include <linux/vfio.h>
> >  #include <linux/vgaarb.h>
> > +#include <linux/io-64-nonatomic-lo-hi.h>
> > 
> >  #include "vfio_pci_priv.h"
> 
> Theoretically this would only define non-atomic ioread64 and iowrite64
> support on a host that doesn't already have native support for these.  Any
> 64-bit x86_64 host should already define ioread/write64, so no change in
> behavior is expected or intended.  Can you provide the kernel .config and
> compiler information?

My host OS is Centos Stream 9, so the complier is from centos 9 release:
gcc-11.5.0-11.el9.x86_64
glibc-2.34-234.el9.x86_64
glibc-2.34-234.el9.i686

And to make sure I didn't use wrong .config, my .config is also from Centos
stream 9 default kernel, attached.

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.