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* [Intel-gfx] [PATCH] drm/i915: Fix bug in user proto-context creation that leaked contexts
@ 2021-09-22 19:43 ` Matthew Brost
  0 siblings, 0 replies; 9+ messages in thread
From: Matthew Brost @ 2021-09-22 19:43 UTC (permalink / raw)
  To: dri-devel, intel-gfx; +Cc: jason

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

Cc: Jason Ekstrand <jason@jlekstrand.net>
Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create parameters (v5)")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Cc: <stable@vger.kernel.org>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c | 6 +++++-
 1 file changed, 5 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 c2ab0e22db0a..9627c7aac6a3 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -898,6 +898,11 @@ 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 +936,6 @@ static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
 			goto free_engines;
 		}
 	}
-	e->num_engines = num_engines;
 
 	return e;
 
-- 
2.32.0


^ permalink raw reply related	[flat|nested] 9+ messages in thread
* [Intel-gfx] [PATCH] drm/i915: Fix bug in user proto-context creation that leaked contexts
@ 2021-10-01 15:58 Matthew Brost
  0 siblings, 0 replies; 9+ messages in thread
From: Matthew Brost @ 2021-10-01 15:58 UTC (permalink / raw)
  To: intel-gfx, dri-devel

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@jlekstrand.net>
Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create parameters (v5)")
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Cc: <stable@vger.kernel.org>
---
 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;
 
-- 
2.32.0


^ permalink raw reply related	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2021-10-05  9:26 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-09-22 19:43 [Intel-gfx] [PATCH] drm/i915: Fix bug in user proto-context creation that leaked contexts Matthew Brost
2021-09-22 19:43 ` Matthew Brost
2021-09-22 21:21 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
2021-09-22 21:53 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-09-23  0:42 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2021-10-01  8:40 ` [Intel-gfx] [PATCH] " Tvrtko Ursulin
2021-10-01 15:48   ` Matthew Brost
2021-10-05  9:25     ` Tvrtko Ursulin
2021-10-01 15:58 Matthew Brost

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