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Groups > linux.kernel > #1476249 > unrolled thread
| Started by | Joerg Roedel <joro@8bytes.org> |
|---|---|
| First post | 2016-09-05 12:00 +0200 |
| Last post | 2016-09-09 10:50 +0200 |
| Articles | 6 — 2 participants |
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Re: io_page_fault seen in normal kernel boot log Joerg Roedel <joro@8bytes.org> - 2016-09-05 12:00 +0200
Re: io_page_fault seen in normal kernel boot log Baoquan He <bhe@redhat.com> - 2016-09-05 12:20 +0200
Re: io_page_fault seen in normal kernel boot log Joerg Roedel <joro@8bytes.org> - 2016-09-06 11:20 +0200
Re: io_page_fault seen in normal kernel boot log Baoquan He <bhe@redhat.com> - 2016-09-09 10:10 +0200
Re: io_page_fault seen in normal kernel boot log Joerg Roedel <joro@8bytes.org> - 2016-09-09 10:40 +0200
Re: io_page_fault seen in normal kernel boot log Baoquan He <bhe@redhat.com> - 2016-09-09 10:50 +0200
| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Date | 2016-09-05 12:00 +0200 |
| Subject | Re: io_page_fault seen in normal kernel boot log |
| Message-ID | <sdYR6-209-59@gated-at.bofh.it> |
Hi Baoquan On Mon, Sep 05, 2016 at 01:38:05PM +0800, Baoquan He wrote: > This happened on 4.8.0-rc5 > > [ +0.006771] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001000 flags=0x0000] > [ +0.010593] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001040 flags=0x0000] > [ +0.010596] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001080 flags=0x0000] > [ +0.010597] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x00000000000010c0 flags=0x0000] > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001100 flags=0x0000] > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001140 flags=0x0000] This is probably a radeon driver issue, the address looks like its handed out by the IOMMU driver, so probably a use-after-free bug. I also see those GPU related faults from time to time. The system usually boots fine anyway. Does boot complete on that system? Regards, Joerg
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| From | Baoquan He <bhe@redhat.com> |
|---|---|
| Date | 2016-09-05 12:20 +0200 |
| Message-ID | <sdZap-2o0-5@gated-at.bofh.it> |
| In reply to | #1476249 |
On 09/05/16 at 11:59am, Joerg Roedel wrote: > Hi Baoquan > > On Mon, Sep 05, 2016 at 01:38:05PM +0800, Baoquan He wrote: > > This happened on 4.8.0-rc5 > > > > [ +0.006771] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001000 flags=0x0000] > > [ +0.010593] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001040 flags=0x0000] > > [ +0.010596] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001080 flags=0x0000] > > [ +0.010597] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x00000000000010c0 flags=0x0000] > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001100 flags=0x0000] > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001140 flags=0x0000] > > This is probably a radeon driver issue, the address looks like its > handed out by the IOMMU driver, so probably a use-after-free bug. I also > see those GPU related faults from time to time. The system usually boots > fine anyway. Does boot complete on that system? Yes, except for this message, system is not impacted. > > > Regards, > > Joerg >
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| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Date | 2016-09-06 11:20 +0200 |
| Message-ID | <sekHT-8tW-17@gated-at.bofh.it> |
| In reply to | #1476276 |
On Mon, Sep 05, 2016 at 06:11:58PM +0800, Baoquan He wrote: > On 09/05/16 at 11:59am, Joerg Roedel wrote: > > > This happened on 4.8.0-rc5 > > > > > > [ +0.006771] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001000 flags=0x0000] > > > [ +0.010593] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001040 flags=0x0000] > > > [ +0.010596] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001080 flags=0x0000] > > > [ +0.010597] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x00000000000010c0 flags=0x0000] > > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001100 flags=0x0000] > > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001140 flags=0x0000] > > > > This is probably a radeon driver issue, the address looks like its > > handed out by the IOMMU driver, so probably a use-after-free bug. I also > > see those GPU related faults from time to time. The system usually boots > > fine anyway. Does boot complete on that system? > > Yes, except for this message, system is not impacted. Hmm, on the other hand, the AMD-Vi driver in 4.8 uses the generic IOVA allocator, so the addresses it hands out should be closer to 4GB. Anyway, this is probably a bug/problem in the GPU driver. Joerg
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| From | Baoquan He <bhe@redhat.com> |
|---|---|
| Date | 2016-09-09 10:10 +0200 |
| Message-ID | <sfp2N-ne-5@gated-at.bofh.it> |
| In reply to | #1477202 |
On 09/06/16 at 11:13am, Joerg Roedel wrote: > On Mon, Sep 05, 2016 at 06:11:58PM +0800, Baoquan He wrote: > > On 09/05/16 at 11:59am, Joerg Roedel wrote: > > > > This happened on 4.8.0-rc5 > > > > > > > > [ +0.006771] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001000 flags=0x0000] > > > > [ +0.010593] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001040 flags=0x0000] > > > > [ +0.010596] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001080 flags=0x0000] > > > > [ +0.010597] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x00000000000010c0 flags=0x0000] > > > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001100 flags=0x0000] > > > > [ +0.010592] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.4 domain=0x0009 address=0x0000000000001140 flags=0x0000] > > > > > > This is probably a radeon driver issue, the address looks like its > > > handed out by the IOMMU driver, so probably a use-after-free bug. I also > > > see those GPU related faults from time to time. The system usually boots > > > fine anyway. Does boot complete on that system? > > > > Yes, except for this message, system is not impacted. > > Hmm, on the other hand, the AMD-Vi driver in 4.8 uses the generic IOVA > allocator, so the addresses it hands out should be closer to 4GB. > Anyway, this is probably a bug/problem in the GPU driver. Thanks for telling. So should I raise this issue to radeon driver mailist list? They probably they have some clues. Thanks Baoquan
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| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Date | 2016-09-09 10:40 +0200 |
| Message-ID | <sfpvQ-wL-13@gated-at.bofh.it> |
| In reply to | #1479721 |
On Fri, Sep 09, 2016 at 04:05:50PM +0800, Baoquan He wrote: > On 09/06/16 at 11:13am, Joerg Roedel wrote: > > Hmm, on the other hand, the AMD-Vi driver in 4.8 uses the generic IOVA > > allocator, so the addresses it hands out should be closer to 4GB. > > Anyway, this is probably a bug/problem in the GPU driver. > > Thanks for telling. So should I raise this issue to radeon driver > mailist list? They probably they have some clues. I tried that before and seldom got a response, but maybe you have more luck :) Joerg
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| From | Baoquan He <bhe@redhat.com> |
|---|---|
| Date | 2016-09-09 10:50 +0200 |
| Message-ID | <sfpFv-zV-13@gated-at.bofh.it> |
| In reply to | #1479742 |
On 09/09/16 at 10:30am, Joerg Roedel wrote: > On Fri, Sep 09, 2016 at 04:05:50PM +0800, Baoquan He wrote: > > On 09/06/16 at 11:13am, Joerg Roedel wrote: > > > Hmm, on the other hand, the AMD-Vi driver in 4.8 uses the generic IOVA > > > allocator, so the addresses it hands out should be closer to 4GB. > > > Anyway, this is probably a bug/problem in the GPU driver. > > > > Thanks for telling. So should I raise this issue to radeon driver > > mailist list? They probably they have some clues. > > I tried that before and seldom got a response, but maybe you have more > luck :) OK, got it. I will resend it to their mailing list. Thanks.
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