On 10/4/2021 15:06, Matthew Brost wrote:
Set number of engines before attempting to create contexts so the
function free_engines can clean up properly. Also check return of
alloc_engines for NULL.
v2:
(Tvrtko)
- Send as stand alone patch
(John Harrison)
- Check for alloc_engines returning NULL
v3:
(Checkpatch / Tvrtko)
- Remove braces around single line if statement
Cc: Jason Ekstrand <jason@xxxxxxxxxxxxxx>
Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create parameters (v5)")
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: John Harrison <John.C.Harrison@xxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 8208fd5b72c3..8c7ea6e56262 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -898,6 +898,10 @@ static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
unsigned int n;
e = alloc_engines(num_engines);
+ if (!e)
+ return ERR_PTR(-ENOMEM);
+ e->num_engines = num_engines;
+
for (n = 0; n < num_engines; n++) {
struct intel_context *ce;
int ret;
@@ -931,7 +935,6 @@ static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
goto free_engines;
}
}
- e->num_engines = num_engines;
return e;
