On Sat, Sep 21, 2019 at 9:19 AM John Hubbard wrote:
>
> On 9/20/19 5:33 PM, Qiujun Huang wrote:
> >> On 9/20/19 8:51 AM, Qiujun Huang wrote:
> ...
> >> It would be nice if this spelled out a little more clearly what's
> >> wrong. I think you and Aneesh are saying that the entry is really
> >> a
>On 9/20/19 8:51 AM, Qiujun Huang wrote:
>> __get_user_pages_fast try to walk the page table but the
>> hugepage pte is replace by hwpoison swap entry by mca path.
>
>I expect you mean MCE (machine check exception), rather than mca?
Yeah
>
>> ...
>> [15798.177437] mce: Uncorrected hardware memory
On 9/20/19 8:51 AM, Qiujun Huang wrote:
> __get_user_pages_fast try to walk the page table but the
> hugepage pte is replace by hwpoison swap entry by mca path.
I expect you mean MCE (machine check exception), rather than mca?
> ...
> [15798.177437] mce: Uncorrected hardware memory error in
>
On 9/20/19 9:21 PM, Qiujun Huang wrote:
__get_user_pages_fast try to walk the page table but the
hugepage pte is replace by hwpoison swap entry by mca path.
...
Can you describe this in more details. I guess you are facing the issue
with respect PUD level PTE entry that got updated by
__get_user_pages_fast try to walk the page table but the
hugepage pte is replace by hwpoison swap entry by mca path.
...
[15798.177437] mce: Uncorrected hardware memory error in
user-access at 224f1761c0
[15798.180171] MCE 0x224f176: Killing pal_main:6784 due to
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