12479 2007-01-30 09:31:48 -0800 ASSERTION FAILURE: resource->inCache() in WebCore::Cache::remove 2007-02-17 11:14:02 -0800 1 1 1 Unclassified WebKit Page Loading 420+ Mac OS X 10.4 RESOLVED FIXED HasReduction, InRadar P1 Normal --- 1 dev+webkit webkit-unassigned ap mitz timothy oldest_to_newest 30157 0 dev+webkit 2007-01-30 09:31:48 -0800 I've only seen this assertion failure on Colloquy's web plugin, but it's producable by reloading that page a few times. ASSERTION FAILED: resource->inCache() (/Users/matt/Code/WebKit/WebCore/loader/Cache.cpp:163 void WebCore::Cache::remove(WebCore::CachedResource*)) Thread 0 Crashed: 0 com.apple.WebCore 0x011545c0 WebCore::Cache::remove(WebCore::CachedResource*) + 104 (Cache.cpp:163) 1 com.apple.WebCore 0x01159c4c WebCore::Loader::didFail(WebCore::SubresourceLoader*, WebCore::ResourceError const&) + 448 (loader.cpp:135) 2 com.apple.WebCore 0x014f3bb4 WebCore::SubresourceLoader::didFail(WebCore::ResourceError const&) + 212 (SubresourceLoader.cpp:186) 3 com.apple.WebCore 0x014f1e98 WebCore::ResourceLoader::didFail(WebCore::ResourceHandle*, WebCore::ResourceError const&) + 68 4 com.apple.WebCore 0x014c7fdc -[WebCoreResourceHandleAsDelegate connection:didFailWithError:] + 164 (ResourceHandleMac.mm:368) 5 com.apple.Foundation 0x929ba110 -[NSURLConnection(NSURLConnectionInternal) _sendDidFailCallback] + 100 6 com.apple.Foundation 0x9298fab8 -[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] + 556 7 com.apple.Foundation 0x9298f810 _sendCallbacks + 156 30118 1 mitz 2007-01-30 10:08:00 -0800 Heh, just when I close bug 11380 :) 30017 2 dev+webkit 2007-01-30 11:51:50 -0800 D'oh! I totally missed that. 29150 3 mrowe 2007-02-01 18:41:39 -0800 <rdar://problem/4971219> 24913 4 mitz 2007-02-07 11:21:31 -0800 Bug 12652 has steps to reproduce. 25023 5 13044 dev+webkit 2007-02-07 22:17:01 -0800 Created attachment 13044 Reduction 1. Load the testcase. 2. From Safari's Debug menu, open the Caches window and tick the "Disable WebCore Caches" checkbox. 3. Click ASSERT! 4. WebKit prints the above assert. 22994 6 13206 mitz 2007-02-16 15:01:10 -0800 Created attachment 13206 Simpler reduction Just hit Command-R to trigger the ASSERT. When you reload, the first Iframe creates a cached resource for the image and it begins to load. Then the second Iframe needs the same URL, but since it's a reload it wants a fresh copy, so it checks if there is a cached resource, and seeing that there is one (put there by the first Iframe), it removes it from the cache. Now the loader learns that the loading failed (since the file doesn't exist) so it wants to remove the resource from the cache, and that's when the assert is hit (because the second frame has already removed it). 22997 7 mitz 2007-02-16 15:38:59 -0800 The reason this doesn't happen with, say, two images with the same src in the same document is that a DocLoader maintains a list of reloaded URLs, so it will not issue multiple requests to load the same URL. I can think of two ways to address this bug: 1) Say that it's okay that separate documents (which can be in different iframes in the same parent document or in two different windows) reload separately, remove the ASSERT, and in the case that the resource is not in the cache skip straight to the canDelete() check. This will have the side effect of actually doing two loads of the same resource in parallel instead of having the second frame/window join in on the reload that's in progress. 2) Manage the "reloaded URLs" or "reloading URLs" list/status in the Cache. Clients will need to tell the cache that they want a resource reloaded, and the cache will see if a reload of the URL is in progress. If so, it will hand back the reloading resource. Otherwise, it will remove an existing resource (if any) and create a new one. The part I'm unclear about here is when a resource should transition from "reloading" to "loaded" status. 22951 8 mitz 2007-02-16 15:40:58 -0800 (In reply to comment #7) > This will have the side effect of > actually doing two loads of the same resource in parallel instead of having the > second frame/window join in on the reload that's in progress. That's how WebKit behaves currently, of course. 22897 9 13210 mitz 2007-02-17 02:41:29 -0800 Created attachment 13210 Replace the ASSERT with a check and allow simultaneous reloads Includes change log and a layout test (for debug builds only). Implements option 1) from comment #7. 22832 10 13210 mjs 2007-02-17 08:23:59 -0800 Comment on attachment 13210 Replace the ASSERT with a check and allow simultaneous reloads r=me 22822 11 adele 2007-02-17 11:14:02 -0800 Committed revision 19683. 13044 2007-02-07 22:17:01 -0800 2007-02-07 22:17:01 -0800 Reduction cacheassert.html text/html 291 dev+webkit PGh0bWw+Cgo8aGVhZD4KPHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3JpcHQiIGNoYXJzZXQ9InV0 Zi04Ij4KICAgIGZ1bmN0aW9uIGNyYXNoTWUoKQogICAgewogICAgICAgIGRvY3VtZW50LmdldEVs ZW1lbnRCeUlkKCdmb28nKS5zdHlsZS5iYWNrZ3JvdW5kSW1hZ2U9J3VybCgvaW1hZ2VzL3N0YXR1 c19vZmYuZ2lmKSc7CiAgICB9Cjwvc2NyaXB0Pgo8L2hlYWQ+Cgo8Ym9keT4KICAgIDxhIGlkPSJm b28iIGhyZWY9IiMiIG9uY2xpY2s9ImNyYXNoTWUoKTsiPkFTU0VSVCE8L2E+CjwvYm9keT4KCjwv aHRtbD4K 13206 2007-02-16 15:01:10 -0800 2007-02-17 01:58:58 -0800 Simpler reduction 12479 reduction.html text/html 193 mitz PHA+CiAgICBSZWxvYWQgdGhpcyBwYWdlLgo8L3A+CjxpZnJhbWUgIHNyYz0nZGF0YTp0ZXh0L2h0 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