From: Christopher Snowhill <kode54@gmail.com>
To: intel-xe@lists.freedesktop.org
Subject: [Intel-xe] [PATCH 2/2] drm/xe: Validate uAPI padding and reserved fields
Date: Tue, 23 May 2023 20:31:31 -0700 [thread overview]
Message-ID: <20230524033131.2000480-3-kode54@gmail.com> (raw)
In-Reply-To: <20230524033131.2000480-1-kode54@gmail.com>
Padding and reserved fields are declared such that they must be
zeroed, so verify that they're all zero in the respective ioctl
functions.
Derived from original patch by mlankhorst.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Christopher Snowhill <kode54@gmail.com>
---
drivers/gpu/drm/xe/xe_bo.c | 6 ++++--
drivers/gpu/drm/xe/xe_engine.c | 19 +++++++++++++++----
drivers/gpu/drm/xe/xe_exec.c | 4 +++-
drivers/gpu/drm/xe/xe_mmio.c | 3 ++-
drivers/gpu/drm/xe/xe_query.c | 3 ++-
drivers/gpu/drm/xe/xe_sync.c | 4 +++-
drivers/gpu/drm/xe/xe_vm.c | 22 +++++++++++++++++++---
drivers/gpu/drm/xe/xe_vm_madvise.c | 4 +++-
drivers/gpu/drm/xe/xe_wait_user_fence.c | 3 ++-
9 files changed, 53 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index c82e995df779..de713348ccc1 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -1644,7 +1644,8 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data,
u32 handle;
int err;
- if (XE_IOCTL_ERR(xe, args->extensions))
+ if (XE_IOCTL_ERR(xe, args->extensions) || XE_IOCTL_ERR(xe, args->pad) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
if (XE_IOCTL_ERR(xe, args->flags &
@@ -1714,7 +1715,8 @@ int xe_gem_mmap_offset_ioctl(struct drm_device *dev, void *data,
struct drm_xe_gem_mmap_offset *args = data;
struct drm_gem_object *gem_obj;
- if (XE_IOCTL_ERR(xe, args->extensions))
+ if (XE_IOCTL_ERR(xe, args->extensions) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
if (XE_IOCTL_ERR(xe, args->flags))
diff --git a/drivers/gpu/drm/xe/xe_engine.c b/drivers/gpu/drm/xe/xe_engine.c
index 094ec17d3004..8c3a722d91c6 100644
--- a/drivers/gpu/drm/xe/xe_engine.c
+++ b/drivers/gpu/drm/xe/xe_engine.c
@@ -348,7 +348,8 @@ static int engine_user_ext_set_property(struct xe_device *xe,
return -EFAULT;
if (XE_IOCTL_ERR(xe, ext.property >=
- ARRAY_SIZE(engine_set_property_funcs)))
+ ARRAY_SIZE(engine_set_property_funcs)) ||
+ XE_IOCTL_ERR(xe, ext.pad))
return -EINVAL;
idx = array_index_nospec(ext.property, ARRAY_SIZE(engine_set_property_funcs));
@@ -380,7 +381,8 @@ static int engine_user_extensions(struct xe_device *xe, struct xe_engine *e,
if (XE_IOCTL_ERR(xe, err))
return -EFAULT;
- if (XE_IOCTL_ERR(xe, ext.name >=
+ if (XE_IOCTL_ERR(xe, ext.pad) ||
+ XE_IOCTL_ERR(xe, ext.name >=
ARRAY_SIZE(engine_user_extension_funcs)))
return -EINVAL;
@@ -523,7 +525,8 @@ int xe_engine_create_ioctl(struct drm_device *dev, void *data,
int len;
int err;
- if (XE_IOCTL_ERR(xe, args->flags))
+ if (XE_IOCTL_ERR(xe, args->flags) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
len = args->width * args->num_placements;
@@ -639,6 +642,10 @@ int xe_engine_get_property_ioctl(struct drm_device *dev, void *data,
struct drm_xe_engine_get_property *args = data;
struct xe_engine *e;
+ if (XE_IOCTL_ERR(xe, args->extensions) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
+ return -EINVAL;
+
mutex_lock(&xef->engine.lock);
e = xa_load(&xef->engine.xa, args->engine_id);
mutex_unlock(&xef->engine.lock);
@@ -718,7 +725,8 @@ int xe_engine_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_xe_engine_destroy *args = data;
struct xe_engine *e;
- if (XE_IOCTL_ERR(xe, args->pad))
+ if (XE_IOCTL_ERR(xe, args->pad) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
mutex_lock(&xef->engine.lock);
@@ -748,6 +756,9 @@ int xe_engine_set_property_ioctl(struct drm_device *dev, void *data,
int ret;
u32 idx;
+ if (XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
+ return -EINVAL;
+
e = xe_engine_lookup(xef, args->engine_id);
if (XE_IOCTL_ERR(xe, !e))
return -ENOENT;
diff --git a/drivers/gpu/drm/xe/xe_exec.c b/drivers/gpu/drm/xe/xe_exec.c
index 3db1b159586e..e44076ee2e11 100644
--- a/drivers/gpu/drm/xe/xe_exec.c
+++ b/drivers/gpu/drm/xe/xe_exec.c
@@ -181,7 +181,9 @@ int xe_exec_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
bool write_locked;
int err = 0;
- if (XE_IOCTL_ERR(xe, args->extensions))
+ if (XE_IOCTL_ERR(xe, args->extensions) ||
+ XE_IOCTL_ERR(xe, args->pad[0] || args->pad[1] || args->pad[2]) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
engine = xe_engine_lookup(xef, args->engine_id);
diff --git a/drivers/gpu/drm/xe/xe_mmio.c b/drivers/gpu/drm/xe/xe_mmio.c
index c7fbb1cc1f64..9d583f11e290 100644
--- a/drivers/gpu/drm/xe/xe_mmio.c
+++ b/drivers/gpu/drm/xe/xe_mmio.c
@@ -407,7 +407,8 @@ int xe_mmio_ioctl(struct drm_device *dev, void *data,
bool allowed;
int ret = 0;
- if (XE_IOCTL_ERR(xe, args->extensions))
+ if (XE_IOCTL_ERR(xe, args->extensions) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
if (XE_IOCTL_ERR(xe, args->flags & ~VALID_MMIO_FLAGS))
diff --git a/drivers/gpu/drm/xe/xe_query.c b/drivers/gpu/drm/xe/xe_query.c
index dd64ff0d2a57..97742d003c8a 100644
--- a/drivers/gpu/drm/xe/xe_query.c
+++ b/drivers/gpu/drm/xe/xe_query.c
@@ -374,7 +374,8 @@ int xe_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
struct drm_xe_device_query *query = data;
u32 idx;
- if (XE_IOCTL_ERR(xe, query->extensions != 0))
+ if (XE_IOCTL_ERR(xe, query->extensions ||
+ XE_IOCTL_ERR(xe, query->reserved[0] || query->reserved[1])))
return -EINVAL;
if (XE_IOCTL_ERR(xe, query->query > ARRAY_SIZE(xe_query_funcs)))
diff --git a/drivers/gpu/drm/xe/xe_sync.c b/drivers/gpu/drm/xe/xe_sync.c
index 1e4e4acb2c4a..5acb37a8b2ab 100644
--- a/drivers/gpu/drm/xe/xe_sync.c
+++ b/drivers/gpu/drm/xe/xe_sync.c
@@ -111,7 +111,9 @@ int xe_sync_entry_parse(struct xe_device *xe, struct xe_file *xef,
return -EFAULT;
if (XE_IOCTL_ERR(xe, sync_in.flags &
- ~(SYNC_FLAGS_TYPE_MASK | DRM_XE_SYNC_SIGNAL)))
+ ~(SYNC_FLAGS_TYPE_MASK | DRM_XE_SYNC_SIGNAL)) ||
+ XE_IOCTL_ERR(xe, sync_in.pad) ||
+ XE_IOCTL_ERR(xe, sync_in.reserved[0] || sync_in.reserved[1]))
return -EINVAL;
signal = sync_in.flags & DRM_XE_SYNC_SIGNAL;
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index a0306526b269..ea354ffbede0 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1799,7 +1799,9 @@ static int vm_user_ext_set_property(struct xe_device *xe, struct xe_vm *vm,
return -EFAULT;
if (XE_IOCTL_ERR(xe, ext.property >=
- ARRAY_SIZE(vm_set_property_funcs)))
+ ARRAY_SIZE(vm_set_property_funcs)) ||
+ XE_IOCTL_ERR(xe, ext.pad) ||
+ XE_IOCTL_ERR(xe, ext.reserved[0] || ext.reserved[1]))
return -EINVAL;
return vm_set_property_funcs[ext.property](xe, vm, ext.value);
@@ -1827,7 +1829,8 @@ static int vm_user_extensions(struct xe_device *xe, struct xe_vm *vm,
if (XE_IOCTL_ERR(xe, err))
return -EFAULT;
- if (XE_IOCTL_ERR(xe, ext.name >=
+ if (XE_IOCTL_ERR(xe, ext.pad) ||
+ XE_IOCTL_ERR(xe, ext.name >=
ARRAY_SIZE(vm_user_extension_funcs)))
return -EINVAL;
@@ -1858,6 +1861,9 @@ int xe_vm_create_ioctl(struct drm_device *dev, void *data,
int err;
u32 flags = 0;
+ if (XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
+ return -EINVAL;
+
if (XE_IOCTL_ERR(xe, args->flags & ~ALL_DRM_XE_VM_CREATE_FLAGS))
return -EINVAL;
@@ -1941,7 +1947,8 @@ int xe_vm_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_xe_vm_destroy *args = data;
struct xe_vm *vm;
- if (XE_IOCTL_ERR(xe, args->pad))
+ if (XE_IOCTL_ERR(xe, args->pad) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
vm = xe_vm_lookup(xef, args->vm_id);
@@ -2891,6 +2898,8 @@ static int vm_bind_ioctl_check_args(struct xe_device *xe,
int i;
if (XE_IOCTL_ERR(xe, args->extensions) ||
+ XE_IOCTL_ERR(xe, args->pad || args->pad2) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]) ||
XE_IOCTL_ERR(xe, !args->num_binds) ||
XE_IOCTL_ERR(xe, args->num_binds > MAX_BINDS))
return -EINVAL;
@@ -2923,6 +2932,13 @@ static int vm_bind_ioctl_check_args(struct xe_device *xe,
u64 obj_offset = (*bind_ops)[i].obj_offset;
u32 region = (*bind_ops)[i].region;
+ if (XE_IOCTL_ERR(xe, (*bind_ops)[i].pad) ||
+ XE_IOCTL_ERR(xe, (*bind_ops)[i].reserved[0] ||
+ (*bind_ops)[i].reserved[1])) {
+ err = -EINVAL;
+ goto free_bind_ops;
+ }
+
if (i == 0) {
*async = !!(op & XE_VM_BIND_FLAG_ASYNC);
} else if (XE_IOCTL_ERR(xe, !*async) ||
diff --git a/drivers/gpu/drm/xe/xe_vm_madvise.c b/drivers/gpu/drm/xe/xe_vm_madvise.c
index 29815852985a..0f5eef337037 100644
--- a/drivers/gpu/drm/xe/xe_vm_madvise.c
+++ b/drivers/gpu/drm/xe/xe_vm_madvise.c
@@ -301,7 +301,9 @@ int xe_vm_madvise_ioctl(struct drm_device *dev, void *data,
struct xe_vma **vmas = NULL;
int num_vmas = 0, err = 0, idx;
- if (XE_IOCTL_ERR(xe, args->extensions))
+ if (XE_IOCTL_ERR(xe, args->extensions) ||
+ XE_IOCTL_ERR(xe, args->pad || args->pad2) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
if (XE_IOCTL_ERR(xe, args->property > ARRAY_SIZE(madvise_funcs)))
diff --git a/drivers/gpu/drm/xe/xe_wait_user_fence.c b/drivers/gpu/drm/xe/xe_wait_user_fence.c
index 15c2e5aa08d2..6c8a60c60087 100644
--- a/drivers/gpu/drm/xe/xe_wait_user_fence.c
+++ b/drivers/gpu/drm/xe/xe_wait_user_fence.c
@@ -100,7 +100,8 @@ int xe_wait_user_fence_ioctl(struct drm_device *dev, void *data,
args->flags & DRM_XE_UFENCE_WAIT_VM_ERROR;
unsigned long timeout = args->timeout;
- if (XE_IOCTL_ERR(xe, args->extensions))
+ if (XE_IOCTL_ERR(xe, args->extensions) || XE_IOCTL_ERR(xe, args->pad) ||
+ XE_IOCTL_ERR(xe, args->reserved[0] || args->reserved[1]))
return -EINVAL;
if (XE_IOCTL_ERR(xe, args->flags & ~VALID_FLAGS))
--
2.40.1
next prev parent reply other threads:[~2023-05-24 3:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-24 3:31 [Intel-xe] [PATCH 0/2] Update Xe uAPI in a minimally invasive way Christopher Snowhill
2023-05-24 3:31 ` [Intel-xe] [PATCH 1/2] drm/xe: Add explicit padding to uAPI definition Christopher Snowhill
2023-05-24 15:20 ` Souza, Jose
2023-05-24 16:21 ` Lucas De Marchi
2023-05-24 3:31 ` Christopher Snowhill [this message]
2023-05-24 15:37 ` [Intel-xe] [PATCH 2/2] drm/xe: Validate uAPI padding and reserved fields Souza, Jose
2023-05-25 1:40 ` Christopher Snowhill
2023-05-25 13:06 ` Souza, Jose
2023-05-24 23:43 ` Lucas De Marchi
2023-05-24 3:34 ` [Intel-xe] ✓ CI.Patch_applied: success for Update Xe uAPI in a minimally invasive way Patchwork
2023-05-24 3:36 ` [Intel-xe] ✓ CI.KUnit: " Patchwork
2023-05-24 3:40 ` [Intel-xe] ✓ CI.Build: " Patchwork
2023-05-24 4:08 ` [Intel-xe] ○ CI.BAT: info " Patchwork
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