On Thu, Nov 14, 2019 at 10:40:22PM +0800, Shile Zhang wrote: > Could you please help to recall the original issue you encountered before? The original issue was data corruption because old mappings did not get removed from the vmalloc area, and thus also new mappings did not get faulted in. So depending on the page-table currently loaded one vmalloc/ioremap area pointed to different (often already freed or re-used) memory and caused the corruption. Regards, Joerg
