Re: [PATCH] x86/sgx: fix a NULL pointer

[Haitao Huang]

On Tue, 18 Jul 2023 10:37:45 -0500, Jarkko Sakkinen <jarkko@xxxxxxxxxx>  
wrote:

> On Mon Jul 17, 2023 at 11:29 PM EEST, Haitao Huang wrote:
> > Under heavy load, the SGX EPC reclaimers (current ksgxd or future EPC
> > cgroup worker) may reclaim the SECS EPC page for an enclave and set
> > encl->secs.epc_page to NULL. But the SECS EPC page is used for EAUG in
> > the SGX #PF handler without checking for NULL and reloading.
> >
> > Fix this by checking if SECS is loaded before EAUG and load it if it was
> > reclaimed.
> >
> > Fixes: 5a90d2c3f5ef8 ("x86/sgx: Support adding of pages to an  
> > initialized enclave")
> > Cc: stable@xxxxxxxxxxxxxxx
>
> Given that
>
> 	$ git describe --contains 5a90d2c3f5ef8
> 	v6.0-rc1~102^2~16
>
> You could also describe this as:
>
> Cc: stable@xxxxxxxxxxxxxxx # v6.0+

Will add

>
...
> Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>

Thank you.
Haitao