Re: nvme: IO_PAGE_FAULT logged with Intel SSDPEKKF512G8

[Paul Menzel]

Dear Keith,


Thank you for your quick response.


Am 18.01.22 um 17:53 schrieb Keith Busch:
> On Tue, Jan 18, 2022 at 03:32:45PM +0100, Paul Menzel wrote:
> > On a Dell OptiPlex 5055 with an Intel SSDPEKKF512G8, Linux 5.10.82 reported
> > an IO_PAGE_FAULT error. This is the first and only time this has happened.
> >
> >      $ dmesg --level=err
> >      [    4.194306] nvme 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000c address=0xffffc080 flags=0x0050]
> >      [    4.206970] nvme 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000c address=0xffffc000 flags=0x0050]
> >      [    7.327820] kfd kfd: VERDE  not supported in kfd
> >      $ lspci -nn -s 01:00.0
> >      01:00.0 Non-Volatile memory controller [0108]: Intel Corporation SSD Pro 7600p/760p/E 6100p Series [8086:f1a6] (rev 03)
>
> I think it's a bug with the iommu implementation.

That would surprise me, but I am adding Jörg and Suravee to the 
recipient list. Last time, I saw an IO_PAGE_FAULT, it was a bug in the 
amdgpu driver.

> If it causes problems, you can typically work around it with kernel
> parameter "iommu=soft".

I have not noticed any problems yet.


Kind regards,

Paul


PS: No idea, if useful, but I include the content of `/proc/iomem`:

$ sudo more /proc/iomem
00000000-00000fff : Reserved
00001000-00087fff : System RAM
00088000-00088fff : Reserved
00089000-0009efff : System RAM
0009f000-000bffff : Reserved
  000a0000-000bffff : PCI Bus 0000:00
000c0000-000c3fff : PCI Bus 0000:00
000c4000-000c7fff : PCI Bus 0000:00
000c8000-000cbfff : PCI Bus 0000:00
000cc000-000cffff : PCI Bus 0000:00
000d0000-000d3fff : PCI Bus 0000:00
000d4000-000d7fff : PCI Bus 0000:00
000d8000-000dbfff : PCI Bus 0000:00
000dc000-000dffff : PCI Bus 0000:00
000e0000-000e3fff : PCI Bus 0000:00
000e4000-000e7fff : PCI Bus 0000:00
000e8000-000ebfff : PCI Bus 0000:00
000ec000-000effff : PCI Bus 0000:00
000f0000-000fffff : System ROM
00100000-09cfffff : System RAM
  05000000-05e03316 : Kernel code
  06000000-063a8fff : Kernel rodata
  06400000-06762eff : Kernel data
  06d31000-06ffffff : Kernel bss
09d00000-09e6ffff : Reserved
09e70000-7afb5fff : System RAM
7afb6000-7afb6fff : Reserved
7afb7000-7afbbfff : System RAM
7afbc000-7afbcfff : Reserved
7afbd000-dadbefff : System RAM
dadbf000-dafbefff : Unknown E820 type
dafbf000-dcfbefff : Reserved
dcfbf000-defbefff : ACPI Non-volatile Storage
defbf000-deffefff : ACPI Tables
defff000-deffffff : System RAM
df000000-dfffffff : Reserved
e0000000-f7ffffff : PCI Bus 0000:00
  e0000000-efffffff : PCI Bus 0000:06
    e0000000-efffffff : 0000:06:00.0
  f0000000-f00fffff : PCI Bus 0000:02
    f0000000-f00fffff : PCI Bus 0000:03
      f0000000-f00fffff : PCI Bus 0000:04
        f0000000-f000ffff : 0000:04:00.0
          f0000000-f000ffff : tg3
        f0010000-f001ffff : 0000:04:00.0
          f0010000-f001ffff : tg3
        f0020000-f002ffff : 0000:04:00.0
          f0020000-f002ffff : tg3
  f0100000-f01fffff : PCI Bus 0000:08
    f0100000-f0107fff : 0000:08:00.3
      f0100000-f0107fff : ICH HD audio
    f0108000-f0108fff : 0000:08:00.2
      f0108000-f0108fff : ahci
  f0200000-f04fffff : PCI Bus 0000:07
    f0200000-f02fffff : 0000:07:00.3
      f0200000-f02fffff : xhci-hcd
    f0300000-f03fffff : 0000:07:00.2
    f0400000-f0401fff : 0000:07:00.2
  f0500000-f05fffff : PCI Bus 0000:06
    f0500000-f053ffff : 0000:06:00.0
    f0540000-f0543fff : 0000:06:00.1
      f0540000-f0543fff : ICH HD audio
    f0560000-f057ffff : 0000:06:00.0
  f0600000-f06fffff : PCI Bus 0000:02
    f0600000-f061ffff : 0000:02:00.1
      f0600000-f061ffff : ahci
    f0620000-f0627fff : 0000:02:00.0
      f0620000-f0627fff : xhci-hcd
    f0680000-f06fffff : 0000:02:00.1
  f0700000-f07fffff : PCI Bus 0000:01
    f0700000-f0703fff : 0000:01:00.0
      f0700000-f0703fff : nvme
f8000000-fbffffff : PCI MMCONFIG 0000 [bus 00-3f]
  f8000000-fbffffff : Reserved
fc000000-feafffff : PCI Bus 0000:00
  fc000000-fc07ffff : amd_iommu
  fdf00000-fdffffff : pnp 00:00
fec00000-fec00fff : Reserved
  fec00000-fec003ff : IOAPIC 0
fec01000-fec013ff : IOAPIC 1
fec10000-fec10fff : Reserved
fec30000-fec30fff : AMDIF030:00
fed00000-fed003ff : HPET 0
  fed00000-fed003ff : PNP0103:00
fed40000-fed44fff : MSFT0101:00
fed80000-fed80fff : Reserved
fed81500-fed818ff : AMDI0030:00
fee00000-fee00fff : Local APIC
  fee00000-fee00fff : pnp 00:00
ff000000-ffffffff : Reserved
  ff000000-ffffffff : pnp 00:03
100000000-81effffff : System RAM
81f000000-81fffffff : RAM buffer