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SubjectRe: [PATCH] iommu-common: Do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint
On (09/17/15 14:26), Andrew Morton wrote:
> Patch looks good.
>
> But I don't know which kernel versions need the fix. So, when fixing a
> bug please always describe the end-user visible effects of that bug.
> Under what circumstances did your kernel crash?
>

I had a sparc kernel that was crashing when I was trying to process
some very large perf.data files- the crash happens when the scsi
driver calls into dma_4v_map_sg and thus the iommu_tbl_range_alloc().

Do you need me to respin the patch with the above info in the
commit id?

--Sowmini


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