mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-26 20:38:12 +00:00
drm/xe: Fix ref counting leak on page fault
If a page fault occurs on VM not in fault a ref can be leaked. Fix this.
Fixes: dd08ebf6c3
("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240301041036.238471-1-matthew.brost@intel.com
This commit is contained in:
parent
67b7950333
commit
27b5a3f237
1 changed files with 4 additions and 2 deletions
|
@ -146,10 +146,12 @@ static int handle_pagefault(struct xe_gt *gt, struct pagefault *pf)
|
|||
/* ASID to VM */
|
||||
mutex_lock(&xe->usm.lock);
|
||||
vm = xa_load(&xe->usm.asid_to_vm, pf->asid);
|
||||
if (vm)
|
||||
if (vm && xe_vm_in_fault_mode(vm))
|
||||
xe_vm_get(vm);
|
||||
else
|
||||
vm = NULL;
|
||||
mutex_unlock(&xe->usm.lock);
|
||||
if (!vm || !xe_vm_in_fault_mode(vm))
|
||||
if (!vm)
|
||||
return -EINVAL;
|
||||
|
||||
retry_userptr:
|
||||
|
|
Loading…
Reference in a new issue