diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2021-11-26 18:43:09 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-12-01 16:07:13 -0500 |
| commit | a872c152fd91e815ce1a2f251ff06d693119fbbd (patch) | |
| tree | 5d1a9546ec5b06c000640fcefd21b14505a4cf1b /drivers/gpu/drm/amd | |
| parent | 71f8f119237ff2dd4fed49aa79eecdc50ed41ddb (diff) | |
| download | linux-a872c152fd91e815ce1a2f251ff06d693119fbbd.tar.bz2 | |
drm/amdkfd: fix double free mem structure
drm_gem_object_put calls release_notify callback to free the mem
structure and unreserve_mem_limit, move it down after the last access
of mem and make it conditional call.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index c5362c23e687..5df89a295177 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -1460,7 +1460,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( struct sg_table *sg = NULL; uint64_t user_addr = 0; struct amdgpu_bo *bo; - struct drm_gem_object *gobj; + struct drm_gem_object *gobj = NULL; u32 domain, alloc_domain; u64 alloc_flags; int ret; @@ -1582,14 +1582,16 @@ allocate_init_user_pages_failed: err_pin_bo: drm_vma_node_revoke(&gobj->vma_node, drm_priv); err_node_allow: - drm_gem_object_put(gobj); /* Don't unreserve system mem limit twice */ goto err_reserve_limit; err_bo_create: unreserve_mem_limit(adev, size, flags); err_reserve_limit: mutex_destroy(&(*mem)->lock); - kfree(*mem); + if (gobj) + drm_gem_object_put(gobj); + else + kfree(*mem); err: if (sg) { sg_free_table(sg); |