Re: [PATCH 1/6] mm: mmap: fix fput in error path

[Andrew Morton]

On Fri,  9 Oct 2020 17:03:37 +0200 "Christian König" <ckoenig.leichtzumerken@xxxxxxxxx> wrote:

> Patch "495c10cc1c0c CHROMIUM: dma-buf: restore args..."
> adds a workaround for a bug in mmap_region.
> 
> As the comment states ->mmap() callback can change
> vma->vm_file and so we might call fput() on the wrong file.
> 
> Revert the workaround and proper fix this in mmap_region.
> 

Doesn't this patch series address the same thing as
https://lkml.kernel.org/r/20200916090733.31427-1-linmiaohe@xxxxxxxxxx?