312266 2026-04-14 06:35:12 -0700 [GBM] REGRESSION(310393@main): Always use DRM_RDWR when exporting dma-buf FDs for GPU buffer mapping 2026-04-17 10:14:53 -0700 1 1 1 Unclassified WebKit WPE WebKit WebKit Local Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=312587 P2 Normal --- 1 zimmermann zimmermann bugs-noreply oldest_to_newest 2200175 0 zimmermann 2026-04-14 06:35:12 -0700 gbm_bo_get_fd_for_plane() in older Mesa versions does not always pass DRM_RDWR to drmPrimeHandleToFD, which results in FDs that cannot be mmap'd for writing. This silently breaks GPU buffer write operations. 2200176 1 zimmermann 2026-04-14 06:36:09 -0700 Pull request: https://github.com/WebKit/WebKit/pull/62730 2200536 2 ews-feeder 2026-04-15 00:33:28 -0700 Committed 311266@main (31dab2d9da5a): <https://commits.webkit.org/311266@main> Reviewed commits have been landed. Closing PR #62730 and removing active labels.