Re: [mm/page_alloc or mm/vmscan or mm/zswap] use-after-free in obj_malloc()

[Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>]

On (24/02/24 00:22), Tetsuo Handa wrote:
> On 2024/02/23 13:43, Sergey Senozhatsky wrote:
> > On (24/02/23 11:10), Tetsuo Handa wrote:
> >>
> >> I can observe this bug during evict_folios() from 6.7.0 to 6.8.0-rc5-00163-gffd2cb6b718e.
> >> Since I haven't observed with 6.6.0, this bug might be introduced in 6.7 cycle.
> > 
> > Can we please run a bisect?
> 
> Bisection pointed at commit afb2d666d025 ("zsmalloc: use copy_page for full page copy"),
> for copy_page() is implemented as non-instrumented code where KMSAN cannot handle.
> On x86_64, copy_page() is defined at arch/x86/lib/copy_page_64.S as below.

Thank you so much.