178285 2017-10-13 14:09:44 -0700 webrtc/datachannel/basic-tcp.html will crash with an invalid crash 2018-11-07 17:34:42 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 jlewis3 youennf achristensen cdumez commit-queue dean_johnson eric.carlson jbedard ryanhaddad webkit-bug-importer youennf oldest_to_newest 1360218 0 jlewis3 2017-10-13 14:09:44 -0700 webrtc/datachannel/basic-tcp.html crashes on all platforms but does not have a valid crash log on Mac platforms. History: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=webrtc%2Fdatachannel%2Fbasic-tcp.html Example results: https://build.webkit.org/results/Apple%20Sierra%20Release%20WK2%20(Tests)/r223296%20(5007)/results.html error: No crash log found for com.apple.WebKit.Networking.Development:423. While not extremely flaky, this does cause the trees to go red occasionally. 1360220 1 webkit-bug-importer 2017-10-13 14:10:19 -0700 <rdar://problem/34985374> 1360234 2 jbedard 2017-10-13 14:25:40 -0700 Here's the build: <https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK2%20%28Tests%29/builds/5007> Something strange if definitely going on. I would expect us to pick up a crash-log from the networking process. It's almost as if the networking process is being killed rather than crashing. 1360284 3 ap 2017-10-13 15:58:40 -0700 This is somewhat reproducible, but hard to catch in a debugger: run-webkit-tests webrtc/datachannel/basic-tcp.html --repeat 1000 --no-show --no-build --no-timeout -f I may have caught this in debugger once, the Networking process died because of a SIGPIPE. The symptom matches, although this could be a user error. 1360350 4 ap 2017-10-13 17:23:15 -0700 Definitely SIGPIPE, sent from the Networking process itself. It looks like libwebrtc tries to handle this signal in a couple places, but that's not quite working. I couldn't get a good stack trace for where the signal is sent from, my probe prints unsymbolicated traces for some reason. sudo dtrace -n 'proc:::signal-send /pid/ { printf("%d %s -%d %d",pid,execname,args[2],args[1]->pr_pid); ustack(); }' 1405765 5 ap 2018-03-12 09:47:22 -0700 A reproducible crash in a test with "basic" in its name seems particularly worth looking into. 1413000 6 337534 youennf 2018-04-09 13:29:37 -0700 Created attachment 337534 Patch 1413392 7 337534 commit-queue 2018-04-10 14:13:20 -0700 Comment on attachment 337534 Patch Clearing flags on attachment: 337534 Committed r230492: <https://trac.webkit.org/changeset/230492> 1413393 8 commit-queue 2018-04-10 14:13:21 -0700 All reviewed patches have been landed. Closing bug. 1475814 9 youennf 2018-11-06 18:27:41 -0800 Reopening to attach new patch. 1475815 10 354042 youennf 2018-11-06 18:27:45 -0800 Created attachment 354042 Patch 1476359 11 354042 commit-queue 2018-11-07 17:34:41 -0800 Comment on attachment 354042 Patch Clearing flags on attachment: 354042 Committed r237970: <https://trac.webkit.org/changeset/237970> 1476360 12 commit-queue 2018-11-07 17:34:42 -0800 All reviewed patches have been landed. Closing bug. 337534 2018-04-09 13:29:37 -0700 2018-11-06 18:27:37 -0800 Patch bug-178285-20180409132936.patch text/plain 3455 youennf U3VidmVyc2lvbiBSZXZpc2lvbjogMjMwMzg4CmRpZmYgLS1naXQgYS9Tb3VyY2UvVGhpcmRQYXJ0 eS9saWJ3ZWJydGMvQ2hhbmdlTG9nIGIvU291cmNlL1RoaXJkUGFydHkvbGlid2VicnRjL0NoYW5n ZUxvZwppbmRleCBkOTY1OTIxYzQxMDdkODY2OWJiNTFhMTZlOWFlZjliMjczOGEwMmM1Li44OWM4 NWFhNjYzYmE4NDEwNGQwYjlmYjI5ODhhNTZiOGYxNzMxYzgxIDEwMDY0NAotLS0gYS9Tb3VyY2Uv VGhpcmRQYXJ0eS9saWJ3ZWJydGMvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9UaGlyZFBhcnR5L2xp YndlYnJ0Yy9DaGFuZ2VMb2cKQEAgLTEsMyArMSwxNiBAQAorMjAxOC0wNC0wOSAgWW91ZW5uIEZh YmxldCAgPHlvdWVubkBhcHBsZS5jb20+CisKKyAgICAgICAgd2VicnRjL2RhdGFjaGFubmVsL2Jh c2ljLXRjcC5odG1sIHdpbGwgY3Jhc2ggd2l0aCBhbiBpbnZhbGlkIGNyYXNoCisgICAgICAgIGh0 dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xNzgyODUKKyAgICAgICAgPHJk YXI6Ly9wcm9ibGVtLzM0OTg1Mzc0PgorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09Q UyEpLgorCisgICAgICAgIERpc2FibGUgU0lHUElQRSBmb3IgV2ViUlRDIHNvY2tldHMgb24gTWFj 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