在2025年2月20日二月 上午7:02，Salvatore Bonaccorso写道：
> Hi
>
> [Adding to recipients Thomas Bogendoerfer, Jiaxun Yang, this is about
> Debian issue with MIPS, https://bugs.debian.org/1086028,
> https://bugs.debian.org/1087809, https://bugs.debian.org/1093200]
Thanks for the info!
>
[...]
>>
>> Ben aims to look into it.
>
> There is 8fa507083388 ("mm/memory: Use exception ip to search
> exception tables") upstream which fixes 4bce37a68ff8 ("mips/mm:
> Convert to using lock_mm_and_find_vma()") and relates to the thread
> https://lore.kernel.org/r/75e9fd7b08562ad9b456a5bdaacb7cc220311cc9.ca...@xry111.site/
> .
I think it's the same problem, the original Fixes tag was pointed
to a commit that exposed the issue. Now another stable commit exposed
it as well.
>
> In fact the commit was backported to:
> v6.6.18: 94d34a6861a2807356b653fc12f958196ebbc043 mm/memory: Use
> exception ip to search exception tables
> v6.7.6: c3a7dbff8d0d4d7174d2162e4db7bdcfd3cb8886 mm/memory: Use
> exception ip to search exception tables
> v6.8-rc5: 8fa5070833886268e4fb646daaca99f725b378e9 mm/memory: Use
> exception ip to search exception tables
>
> but cannot as it is for 6.1.y. It at least depends on 11ba1728be3e
> ("ptrace: Introduce exception_ip arch hook").
It should be trivial to backport for 6.1.y :-)
Thanks
>
> As Ben Hutching said he will take action to look at this issue I will
> not further "hijack" the thread, but I though it was worth mentioning
> the relation to CVE-2023-3269/StackRot and the potential missing bits
> from upper stable series.
>
> Regards,
> Salvatore
--
- Jiaxun
