283608 2024-11-22 18:10:55 -0800 [run-webkit-tests] -stderr.txt file isn't generated if the ref test fails to generate a pixel dump 2024-11-25 11:50:22 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 fujii fujii webkit-bug-importer oldest_to_newest 2077197 0 fujii 2024-11-22 18:10:55 -0800 REGRESSION(281821@main): [Win WebKitTestRunner] stderr isn't flushed when WebProcess crashed For example, WebProcess crashed 50 times in the following test run. https://build.webkit.org/results/Windows-64-bit-Debug-Tests/286841@main%20(414)/results.html But, only half of them has stderr. I don't know when this problem started to happen. I don't observe this problem on my PC and don't know how to reproduce. 2077199 1 fujii 2024-11-22 18:14:00 -0800 Oops. I wrote "REGRESSION(281821@main)" in the above comment. But, I'm not sure. 281821@main changed only UI process not to flush when crashing. I think WebProcess should flush by itself before it crashes. 2077201 2 fujii 2024-11-22 18:21:04 -0800 The removed function 'exceptionFilter' was called only when UI process crashed. UI process didn't crash when a web process crashed. So, I think 'exceptionFilter' is called in the above test runs. 2077205 3 fujii 2024-11-22 18:31:02 -0800 It is strange that stderr is empty even assuming that the web process crashed without flushing. In https://build.webkit.org/results/Windows-64-bit-Debug-Tests/286841@main%20(414)/compositing/tiling/tiled-drawing-async-frame-scrolling-stderr.txt the first half part was output by the web process, and the second half part was output by the UI process. > ERROR: 0000026C78A14C20 - [PID=7720] WebProcessProxy::didClose (web process crash) > C:\BW\Windows-64-bit-Debug-Build\build\Source\WebKit\UIProcess/WebProcessProxy.cpp(1272) : virtual void WebKit::WebProcessProxy::didClose(IPC::Connection &) > ERROR: 0000026C78A14C20 - [PID=7720] WebProcessProxy::processDidTerminateOrFailedToLaunch: reason=Crash > C:\BW\Windows-64-bit-Debug-Build\build\Source\WebKit\UIProcess/WebProcessProxy.cpp(1280) : void WebKit::WebProcessProxy::processDidTerminateOrFailedToLaunch(ProcessTerminationReason) > ERROR: 0000026C78A2E9F0 - [pageProxyID=62, webPageID=63, PID=7720] WebPageProxy::processDidTerminate: (pid 7720), reason=Crash > C:\BW\Windows-64-bit-Debug-Build\build\Source\WebKit\UIProcess/WebPageProxy.cpp(10636) : void WebKit::WebPageProxy::resetStateAfterProcessTermination(ProcessTerminationReason) > ERROR: 0000026C78A2E9F0 - [pageProxyID=62, webPageID=63, PID=7720] WebPageProxy::dispatchProcessDidTerminate: reason=Crash > C:\BW\Windows-64-bit-Debug-Build\build\Source\WebKit\UIProcess/WebPageProxy.cpp(10690) : void WebKit::WebPageProxy::dispatchProcessDidTerminate(WebProcessProxy &, ProcessTerminationReason) > WebProcess terminated (pid 7720) for reason: crash 2077208 4 fujii 2024-11-22 18:34:19 -0800 (In reply to Fujii Hironori from comment #2) > So, I think 'exceptionFilter' is called in the above test runs. Correction: So, I think 'exceptionFilter' *isn't* called in the above test runs. 2077210 5 fujii 2024-11-22 18:46:42 -0800 The all missing stderrs were actually recoreded in the log of run-webkit-tests. https://build.webkit.org/#/builders/1190/builds/414 This is not a WebKit problem, but a run-webkit-tests problem. 2077482 6 fujii 2024-11-24 22:53:36 -0800 Pull request: https://github.com/WebKit/WebKit/pull/37113 2077580 7 ews-feeder 2024-11-25 11:49:46 -0800 Committed 287069@main (cf0de478beaf): <https://commits.webkit.org/287069@main> Reviewed commits have been landed. Closing PR #37113 and removing active labels. 2077581 8 webkit-bug-importer 2024-11-25 11:50:22 -0800 <rdar://problem/140549836>