101416 2012-11-06 17:54:53 -0800 Assertion failure in SubresourceLoader::didFail when reloading 2013-01-09 12:55:16 -0800 1 1 1 Unclassified WebKit Page Loading 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 ktf.kim ap ap beidson japhet koivisto webkit.review.bot oldest_to_newest 760254 0 ktf.kim 2012-11-06 17:54:53 -0800 Crash occurred when SubresourceLoader::didFail called during reload by ASSERT(!m_resource->resourceToRevalidate()) The m_resource->m_resourceToRevalidate was set by CachedResource::setResourceToRevalidate on request, and was expected to clear by CachedResource::clearResourceToRevalidate when responce received. CachedResourceLoader::requestResource CachedResourceLoader::revalidateResource CachedResource::setResourceToRevalidate SubresourceLoader::didReceiveResponse MemoryCache::revalidationSucceeded (or MemoryCache::revalidationFailed) CachedResource::clearResourceToRevalidate But, when SubresourceLoader::didFail called by ResourceLoader::didFail, there was no chance to clear before that. sendRequestCallback ResourceLoader::didFail SubresourceLoader::didFail So, in this case, clear the resourceToRevalidate on there would be more suitable than ASSERT. 760257 1 172688 ktf.kim 2012-11-06 18:03:02 -0800 Created attachment 172688 Patch 760808 2 japhet 2012-11-07 09:58:28 -0800 (In reply to comment #0) > Crash occurred when SubresourceLoader::didFail called during reload by ASSERT(!m_resource->resourceToRevalidate()) > The m_resource->m_resourceToRevalidate was set by CachedResource::setResourceToRevalidate on request, > and was expected to clear by CachedResource::clearResourceToRevalidate when responce received. > > CachedResourceLoader::requestResource > CachedResourceLoader::revalidateResource > CachedResource::setResourceToRevalidate > > SubresourceLoader::didReceiveResponse > MemoryCache::revalidationSucceeded (or MemoryCache::revalidationFailed) > CachedResource::clearResourceToRevalidate > > But, when SubresourceLoader::didFail called by ResourceLoader::didFail, there was no chance to clear before that. > sendRequestCallback > ResourceLoader::didFail > SubresourceLoader::didFail > > So, in this case, clear the resourceToRevalidate on there would be more suitable than ASSERT. Please provide a complete stack trace, and a test case if possible. I don't have enough context from this description to be sure that this is the correct fix. Thanks! 761101 3 ktf.kim 2012-11-07 15:26:24 -0800 I found it on Webkit2 EFL MiniBrowser. The test case was.. 1) enter some site - and all the subresource downloaded successfully 2) reload - and one of the subresource downloaded failed 3) WebProcess crash occurred by the ASSERT fail This is rare case, and I couldn't make layout test for that. The site I found it is : http://media.daum.net/photo/5662#20121107080810714 The below subresource didFail when reload : http://s1.daumcdn.net/photo-media/static/media/3.6.3/dist/media/news_photo.min.css The backtrace was like the below : #0 0x00007f82a6ab4485 in WebCore::SubresourceLoader::didFail (this=0x198e870, error=...) at Source/WebCore/loader/SubresourceLoader.cpp:285 #1 0x00007f82a6aaf7bb in WebCore::ResourceLoader::didFail (this=0x198e870, error=...) at Source/WebCore/loader/ResourceLoader.cpp:460 #2 0x00007f82a75f99cc in WebCore::sendRequestCallback (res=0x1cb5420, data=0x1b315b0) at Source/WebCore/platform/network/soup/ResourceHandleSoup.cpp:437 #3 0x00007f82a28aea8d in g_simple_async_result_complete (simple=0x1cb5420) at gsimpleasyncresult.c:767 #4 0x00007f82a23a0676 in http_input_stream_ready_cb (source=0x163c010, result=0x20462e0, user_data=0x17740c0) at soup-request-http.c:139 #5 0x00007f82a28aea8d in g_simple_async_result_complete (simple=0x20462e0) at gsimpleasyncresult.c:767 #6 0x00007f82a23a7fbb in send_request_return_result (stream=<optimized out>, error=<optimized out>, item=<optimized out>) at soup-session-async.c:522 #7 0x00007f82a23a8256 in try_run_until_read (item=0x7f8244003190) at soup-session-async.c:670 #8 0x00007f82a23a826c in read_ready_cb (msg=<optimized out>, user_data=<optimized out>) at soup-session-async.c:644 #9 0x00007f82a2be0e53 in g_main_dispatch (context=0x1780340) at gmain.c:2539 #10 g_main_context_dispatch (context=0x1780340) at gmain.c:3075 #11 0x00007f82a3b3016e in _ecore_glib_select__locked (ecore_timeout=0x1780340, efds=<optimized out>, wfds=<optimized out>, rfds=<optimized out>, ecore_fds=5, ctx=<optimized out>) at ecore_glib.c:171 #12 _ecore_glib_select (ecore_fds=5, rfds=<optimized out>, wfds=<optimized out>, efds=<optimized out>, ecore_timeout=0x1780340) at ecore_glib.c:205 #13 0x00007f82a3b29dc9 in _ecore_main_select (timeout=<optimized out>) at ecore_main.c:1444 #14 0x00007f82a3b2a955 in _ecore_main_loop_iterate_internal (once_only=0) at ecore_main.c:1872 #15 0x00007f82a3b2ac57 in ecore_main_loop_begin () at ecore_main.c:934 #16 0x00007f82a75de5b1 in WebCore::RunLoop::run () at Source/WebCore/platform/efl/RunLoopEfl.cpp:90 #17 0x00007f82aa7cb8b6 in WebKit::WebProcessMainEfl (argc=2, argv=0x7fff9502acf8) at Source/WebKit2/WebProcess/efl/WebProcessMainEfl.cpp:126 #18 0x0000000000400794 in main (argc=2, argv=0x7fff9502acf8) at Source/WebKit2/efl/MainEfl.cpp:30 761130 4 japhet 2012-11-07 16:03:34 -0800 Hmm, it is pretty rare to have a revalidation attempt trigger didFail() when the original request didn't. For a reproducible layout test, my first thought is: Request a subresource, which includes a "Cache-Control: no-store, no-cache, must-revalidate" header. Request it again, but this time it redirects to http://localhost:7, which should reliably trigger a didFail(). I'm especially curious to know whether this crashes happens on all ports. I can't tell from inspection whether sendRequestCallback() is calling didFail() at the correct time. 761133 5 ap 2012-11-07 16:05:36 -0800 > Hmm, it is pretty rare to have a revalidation attempt trigger didFail() when the original request didn't. Probably occurs when network is down. We have a "network down" simulating script somewhere in http/tests for testing applications cache. It might help here, too. 761134 6 172688 ap 2012-11-07 16:06:19 -0800 Comment on attachment 172688 Patch r- for the lack of a test case. 803571 7 181966 ap 2013-01-09 12:16:00 -0800 Created attachment 181966 proposed fix 803629 8 ap 2013-01-09 12:55:16 -0800 Committed <http://trac.webkit.org/changeset/139230>. 172688 2012-11-06 18:03:02 -0800 2013-01-09 12:16:00 -0800 Patch bug-101416-20121107110116.patch text/plain 1735 ktf.kim U3VidmVyc2lvbiBSZXZpc2lvbjogMTMzNjk5CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggNTE2YWU5MzQ5NmQzNjA0 YmVkMGNmYjEwNTBhNzk2ZDk5OTNhYzExMi4uMzQyMGQ0NTU0ZjlhMDljZTM0YTg4YmJjMjhlMDU1 YjcwMGYzYTgwNSAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE3IEBACisyMDEyLTExLTA2ICBLeXVu Z1RhZSBLaW0gIDxrdGYua2ltQHNhbXN1bmcuY29tPgorCisgICAgICAgIENyYXNoIGluIFN1YnJl c291cmNlTG9hZGVyOjpkaWRGYWlsIHdoZW4gcmVsb2FkCisgICAgICAgIGh0dHBzOi8vYnVncy53 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