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Groups > linux.kernel > #1526804
| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: BUG at drivers/iommu/amd_iommu.c:1436! |
| Date | 2016-11-21 16:40 +0100 |
| Message-ID | <sFYRk-2Wx-27@gated-at.bofh.it> (permalink) |
| References | <sEAxH-4Sb-11@gated-at.bofh.it> <sECJc-6f6-21@gated-at.bofh.it> <sED2y-6D0-11@gated-at.bofh.it> <sED2y-6D0-15@gated-at.bofh.it> <sESbg-8gx-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Nov 18, 2016 at 09:04:05AM -0500, Mark Hounschell wrote: > OK. It's attached. > [ 45.033715] WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:1158 check_unmap+0x4ef/0x990 > [ 45.037651] 3c59x 0000:04:04.0: DMA-API: device driver failed to check map error[device address=0x00000000ffedf840] [size=1536 bytes] [mapped as single] Okay, there is a dma-debug warning from the 3c59x driver. Can you please blacklist this driver (or compile it out) and re-try? The dma-debug code will only show the first warning and stop then. So any possible warnings from your out-of-tree driver will not be shown as long as the 3c59x driver is loaded. Alternativly you can write 1 to dma-api/all_errors in debug-fs so that it will show all errors. But I suggest to unload the 3com driver first and then load your driver. Joerg
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BUG at drivers/iommu/amd_iommu.c:1436! Mark Hounschell <markh@compro.net> - 2016-11-17 20:30 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Joerg Roedel <joro@8bytes.org> - 2016-11-17 22:50 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Mark Hounschell <markh@compro.net> - 2016-11-17 23:10 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Joerg Roedel <joro@8bytes.org> - 2016-11-17 23:10 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Joerg Roedel <joro@8bytes.org> - 2016-11-21 16:40 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Mark Hounschell <markh@compro.net> - 2016-11-21 22:50 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Joerg Roedel <joro@8bytes.org> - 2016-11-22 09:50 +0100
Re: BUG at drivers/iommu/amd_iommu.c:1436! Mark Hounschell <markh@compro.net> - 2016-11-22 21:00 +0100
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