Messages in this thread | | | Subject | Re: [PATCH] dma-remap: Avoid de-referencing NULL atomic_pool | From | Florian Fainelli <> | Date | Tue, 11 Jun 2019 09:44:47 -0700 |
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On 6/10/19 10:26 PM, Christoph Hellwig wrote: > Looks good to me. When did this start to show up? Do we need > to push it to Linus this cycle and cc stable?
You need a really contrived memory map layout to reach that situation, so I don't think it warrants a stable backport.
For ARM64, this seems to date back to 3.18 with d4932f9e81ae7a7bf3c3967e48373909b9c98ee5 ("arm64: add atomic pool for non-coherent and CMA allocations") and for ARM 32-bit, I don't think you could hit that condition since it would mean no lowmem, which would not lead to a working kernel. -- Florian
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