[Intel-xe] [PATCH 0/2] drm/xe: Fix unprotected rebind_list accesses

[Souza, Jose]

On Wed, 2023-05-10 at 16:19 +0200, Thomas Hellström wrote:
> Each VM has two rebind lists, one protected by the VM resv, the other
> one protected essentially by the VM notifier.list_lock. This series
> intends to fix two points of illegal access.
> 
> Patch 1 fixes an access of VM rebind_lists' link without the VM resv held.
> Patch 2 fixes an issue where the VMA may not be removed from the
> VM notifier.rebind_list on VMA destruction.

Tested-by: José Roberto de Souza <jose.souza at intel.com>

This improved overall stability and fixed the 'list_add corruption' errors, thank you.

> 
> Thomas Hellström (2):
>   drm/xe: Fix unlocked access of the vma::rebind_link
>   drm/xe: Properly remove the vma from the vm::notifer::rebind_list when
>     destroyed
> 
>  drivers/gpu/drm/xe/xe_vm.c | 23 ++++++++++++++++-------
>  1 file changed, 16 insertions(+), 7 deletions(-)
>