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[Impeller] Ensure that HostBuffers/DeviceBuffers allocated by RendererTest tests are valid for the lifetime of the RenderPass#181635

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Jan 29, 2026
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[Impeller] Ensure that HostBuffers/DeviceBuffers allocated by RendererTest tests are valid for the lifetime of the RenderPass#181635
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RenderPass holds a list of BufferViews that may hold raw pointers to DeviceBuffers. HostBuffers and the underlying DeviceBuffers must not be deleted until the RenderPass is no longer using them.

See #181287

…rTest tests are valid for the lifetime of the RenderPass

RenderPass holds a list of BufferViews that may hold raw pointers to DeviceBuffers.  HostBuffers and the underlying DeviceBuffers must not be deleted until the RenderPass is no longer using them.

See flutter#181287
@github-actions github-actions Bot added engine flutter/engine related. See also e: labels. e: impeller Impeller rendering backend issues and features requests labels Jan 28, 2026

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This pull request addresses a memory lifetime issue in multiple RendererTest unit tests. In each test, the creation of HostBuffer instances has been moved from within the render callback lambda to the outer scope of the test function. This ensures that the host buffers, and the underlying device buffers they manage, remain valid for the entire duration of the render pass execution. This change prevents potential use-after-free errors where a RenderPass might hold dangling pointers to buffer data.

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LGTM. I'd really like us to get ASAN turned back on to make sure we don't break this in the future. We both looked into it briefly and it is a bit involved. It's not worth holding back this issue for that though.

see also:

@jason-simmons jason-simmons added the autosubmit Merge PR when tree becomes green via auto submit App label Jan 29, 2026
@auto-submit auto-submit Bot added this pull request to the merge queue Jan 29, 2026
Merged via the queue into flutter:master with commit 7a8ecd1 Jan 29, 2026
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@flutter-dashboard flutter-dashboard Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Jan 29, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Jan 30, 2026
…by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Jan 30, 2026
…by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Jan 30, 2026
…by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Jan 30, 2026
…by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Jan 30, 2026
…by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
auto-submit Bot pushed a commit to flutter/packages that referenced this pull request Jan 30, 2026
Roll Flutter from da72d5936d69 to 1d9d6a9a5ef6 (33 revisions)

flutter/flutter@da72d59...1d9d6a9

2026-01-30 [email protected] enable enhanced debugging for GLES playground (flutter/flutter#181157)
2026-01-30 [email protected] Make the Windows windowing_test in .ci.yaml have bringup as false (flutter/flutter#181664)
2026-01-30 [email protected] Roll Packages from cd4fd61 to 510dd40 (4 revisions) (flutter/flutter#181726)
2026-01-30 [email protected] Roll Skia from edbf7e9eb846 to 4745eb2fe837 (1 revision) (flutter/flutter#181725)
2026-01-30 [email protected] Enhance error handling of WidgetsBindingObserver callbacks (flutter/flutter#181174)
2026-01-30 [email protected] Roll Skia from 05d3cb9d2be9 to edbf7e9eb846 (2 revisions) (flutter/flutter#181715)
2026-01-30 [email protected] Roll Skia from c198e5fa9cd9 to 05d3cb9d2be9 (1 revision) (flutter/flutter#181712)
2026-01-30 [email protected] Roll Dart SDK from 920b7e24583e to 2703fd9733ce (2 revisions) (flutter/flutter#181693)
2026-01-30 [email protected] Roll Skia from b9f40c193e7a to c198e5fa9cd9 (6 revisions) (flutter/flutter#181692)
2026-01-30 [email protected] Roll pub packages (flutter/flutter#181690)
2026-01-30 [email protected] Extend the Windows tool_integration_tests_2_9 shard timeout to 1 hour (flutter/flutter#181678)
2026-01-29 [email protected] Add `android_sdk` dependency to `android_engine_opengles_tests` (flutter/flutter#181681)
2026-01-29 [email protected] Roll Dart SDK from a0685c8e946b to 920b7e24583e (3 revisions) (flutter/flutter#181680)
2026-01-29 [email protected] Roll Skia from 128b5213711e to b9f40c193e7a (14 revisions) (flutter/flutter#181675)
2026-01-29 [email protected] [Impeller] Ensure that HostBuffers/DeviceBuffers allocated by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
2026-01-29 [email protected] [Impeller] Fix off-by-one indices in the SimilarPointPair/SimilarPointTrio functions used by ShadowPathGeometryTest (flutter/flutter#181623)
2026-01-29 [email protected] 180162 fix radio list tile and switch list tile accept widget states controller (flutter/flutter#180367)
2026-01-29 [email protected] Remove unused test file (flutter/flutter#181671)
2026-01-29 [email protected] Roll libpng to version 1.6.54 (flutter/flutter#181625)
2026-01-29 [email protected] Remove nonstandard ndkpath for `hybrid_android_views` integration test (flutter/flutter#181666)
2026-01-29 [email protected] Add TestWidgetsApp utility and refactor widget tests to use WidgetsApp (flutter/flutter#180456)
2026-01-29 [email protected] Add `TestTextField` and migrate tests (flutter/flutter#180494)
2026-01-29 [email protected] Merge changelog for 3.38.9 (flutter/flutter#181668)
2026-01-29 [email protected] [flutter_tools] Deprecate `plugin_ffi` template (flutter/flutter#181588)
2026-01-29 [email protected] Deprecate onReorder callback (flutter/flutter#178242)
2026-01-29 [email protected] [web] Use defensive null check in text editing placeElement (flutter/flutter#180795)
2026-01-29 [email protected] Roll Packages from 1cb2148 to cd4fd61 (4 revisions) (flutter/flutter#181663)
2026-01-29 [email protected] Roll Skia from 89df65f8324c to 128b5213711e (2 revisions) (flutter/flutter#181651)
2026-01-29 [email protected] [hooks] Don't run build hooks for code assets in `flutter run` (flutter/flutter#181542)
2026-01-29 [email protected] Roll Dart SDK from f10dcbfca98f to a0685c8e946b (5 revisions) (flutter/flutter#181653)
2026-01-29 [email protected] Fixes getUniformX for Vulkan (flutter/flutter#181286)
2026-01-29 [email protected] Roll Fuchsia Linux SDK from adhoq9ouVRh0xzkm3... to isy1ARvK-3bsvtfc-... (flutter/flutter#181641)
2026-01-29 [email protected] Add isDark, isLight, and isSystem getters to ThemeMode (flutter/flutter#181475)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC [email protected],[email protected] on the revert to ensure that a human
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To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

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@gaaclarke gaaclarke mentioned this pull request Feb 2, 2026
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LongCatIsLooong pushed a commit to LongCatIsLooong/flutter that referenced this pull request Feb 6, 2026
…rTest tests are valid for the lifetime of the RenderPass (flutter#181635)

RenderPass holds a list of BufferViews that may hold raw pointers to
DeviceBuffers. HostBuffers and the underlying DeviceBuffers must not be
deleted until the RenderPass is no longer using them.

See flutter#181287
flutter-zl pushed a commit to flutter-zl/flutter that referenced this pull request Feb 10, 2026
…rTest tests are valid for the lifetime of the RenderPass (flutter#181635)

RenderPass holds a list of BufferViews that may hold raw pointers to
DeviceBuffers. HostBuffers and the underlying DeviceBuffers must not be
deleted until the RenderPass is no longer using them.

See flutter#181287
rickhohler pushed a commit to rickhohler/flutter that referenced this pull request Feb 19, 2026
…rTest tests are valid for the lifetime of the RenderPass (flutter#181635)

RenderPass holds a list of BufferViews that may hold raw pointers to
DeviceBuffers. HostBuffers and the underlying DeviceBuffers must not be
deleted until the RenderPass is no longer using them.

See flutter#181287
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