175870 2017-08-22 20:25:59 -0700 [GTK] webkit_web_resource_get_data_finish() returns NULL without setting the error 2017-10-04 03:44:42 -0700 1 1 1 Unclassified WebKit WebKitGTK Other Unspecified Unspecified RESOLVED DUPLICATE 177107 https://bugzilla.gnome.org/show_bug.cgi?id=786592 P2 Major --- 1 sfanxiang webkit-unassigned bugs-noreply cgarcia mcatanzaro oldest_to_newest 1341436 0 sfanxiang 2017-08-22 20:25:59 -0700 webkit_web_resource_get_data_finish() sometimes returns NULL without setting the error, causing a NULL dereference. Because of this bug, Epiphany crashes if the user saves some special pages. WebkitGTK+ version: 2.16.6 Error code: https://trac.webkit.org/browser/webkit/trunk/Source/WebKit/UIProcess/API/glib/WebKitWebResource.cpp#L397 Example website that crashes Epiphany when saved: https://archive.org/download/testmp3testfile/mpthreetest.mp3 Downstream bug: https://bugzilla.gnome.org/show_bug.cgi?id=786592 1341521 1 mcatanzaro 2017-08-23 07:01:47 -0700 I can reproduce this crash always if I use the Save Page As context menu item. It works fine if I use Save Video As. Thanks for reporting and for finding a reproducer! 1342628 2 319131 mcatanzaro 2017-08-25 21:14:12 -0700 Created attachment 319131 Backtrace 1342629 3 mcatanzaro 2017-08-25 21:23:21 -0700 Looks like webkit_web_resource_get_data() never sets any error. At the very least we need to return some generic error there. Then the next question is why the resource load is failing in the first place, but that is a separate bug. 1356322 4 cgarcia 2017-10-04 03:44:42 -0700 *** This bug has been marked as a duplicate of bug 177107 *** 319131 2017-08-25 21:14:12 -0700 2017-08-25 21:14:12 -0700 Backtrace gdb.txt text/plain 8922 mcatanzaro IzAgIDB4MDAwMDdmYWRjMTZlMDk2NCBpbiB3ZWJfcmVzb3VyY2VfZ2V0X2RhdGFfY2IgKHJlc291 cmNlPTxvcHRpbWl6ZWQgb3V0PiwgcmVzdWx0PTxvcHRpbWl6ZWQgb3V0Piwgb3V0cHV0X3N0cmVh bT0weGQ3YWM5YjZlNjAgW0dMb2NhbEZpbGVPdXRwdXRTdHJlYW1dKQogICAgYXQgZXBoeS13ZWIt dmlldy5jOjMxNzAKICAgICAgICBkYXRhID0gPG9wdGltaXplZCBvdXQ+CiAgICAgICAgZGF0YV9s ZW5ndGggPSAwCiAgICAgICAgaW5wdXRfc3RyZWFtID0gPG9wdGltaXplZCBvdXQ+CiAgICAgICAg ZXJyb3IgPSAweDAKIzEgIDB4MDAwMDdmYWRiOTQzMTUzNCBpbiBnX3Rhc2tfcmV0dXJuX25vdyAo dGFzaz0weGQ3YWRjOGNlMTAgW0dUYXNrXSkKICAgIGF0IGd0YXNrLmM6MTE0NQojMiAgMHgwMDAw N2ZhZGI5NDMxZjU2IGluIGdfdGFza19yZXR1cm4gKHRhc2s9MHhkN2FkYzhjZTEwIFtHVGFza10s 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