Re: block: use after free in bio_uncopy_user/copy_page_to_iter

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On 04/17/2016 02:37 PM, Christoph Hellwig wrote:
> Adding Doug as this involves the SG driver, which has a slightly
> unusual usage of the blk-map.c code.
> 
> Does anyone know if the __asan_storeN in the trace implies the memory
> stored to was invalid and not the memory read from?

Yes. In this case it attempted to write to memory that was already freed.


Thanks,
Sasha
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