{"action":"created","issue":{"url":"https://api.github.com/repos/mozilla/rr/issues/1532","labels_url":"https://api.github.com/repos/mozilla/rr/issues/1532/labels{/name}","comments_url":"https://api.github.com/repos/mozilla/rr/issues/1532/comments","events_url":"https://api.github.com/repos/mozilla/rr/issues/1532/events","html_url":"https://github.com/mozilla/rr/issues/1532","id":96965818,"number":1532,"title":"RR Hang in waitpid","user":{"login":"bgirard","id":793565,"avatar_url":"https://avatars.githubusercontent.com/u/793565?v=3","gravatar_id":"","url":"https://api.github.com/users/bgirard","html_url":"https://github.com/bgirard","followers_url":"https://api.github.com/users/bgirard/followers","following_url":"https://api.github.com/users/bgirard/following{/other_user}","gists_url":"https://api.github.com/users/bgirard/gists{/gist_id}","starred_url":"https://api.github.com/users/bgirard/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bgirard/subscriptions","organizations_url":"https://api.github.com/users/bgirard/orgs","repos_url":"https://api.github.com/users/bgirard/repos","events_url":"https://api.github.com/users/bgirard/events{/privacy}","received_events_url":"https://api.github.com/users/bgirard/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-07-24T05:02:00Z","updated_at":"2015-07-24T06:22:10Z","closed_at":null,"body":"I'm seeing a hang in waitpid when trying to run reftest on digitalocean. I added a swap partition and have a larger instance now so there's a total of 4GB (2+2).\r\n\r\n#0  0x00007f64e3e55ee9 in __libc_waitpid (pid=-1, stat_loc=0x7ffd2a9c4dfc, options=1073741826) at ../sysdeps/unix/sysv/linux/waitpid.c:40\r\n#1  0x000000000060105d in Scheduler::get_next_thread(Task*, Switchable, bool*) ()\r\n#2  0x00000000005a7f41 in RecordSession::record_step() ()\r\n#3  0x00000000005a131b in ?? ()\r\n#4  0x00000000005a1561 in RecordCommand::run(std::vector<std::string, std::allocator<std::string> >&) ()\r\n#5  0x0000000000593bea in main ()\r\n\r\nI'm checking with ps -ef but I see no child process:\r\n\r\nmozilla@mozgfx-rr-orange-hunter-1:~$ ps -ef | grep 16312\r\nmozilla  16312 15957  1 00:49 pts/2    00:00:13 /usr/bin/rr /home/mozilla/mozilla-central/tree/obj-x86_64-unknown-linux-gnu/dist/bin/firefox about:blank -foreground -profile /tmp/tmpkFXzYc.mozrunner\r\nmozilla  16694 15585  0 01:01 pts/3    00:00:00 grep 16312"},"comment":{"url":"https://api.github.com/repos/mozilla/rr/issues/comments/124344263","html_url":"https://github.com/mozilla/rr/issues/1532#issuecomment-124344263","issue_url":"https://api.github.com/repos/mozilla/rr/issues/1532","id":124344263,"user":{"login":"bgirard","id":793565,"avatar_url":"https://avatars.githubusercontent.com/u/793565?v=3","gravatar_id":"","url":"https://api.github.com/users/bgirard","html_url":"https://github.com/bgirard","followers_url":"https://api.github.com/users/bgirard/followers","following_url":"https://api.github.com/users/bgirard/following{/other_user}","gists_url":"https://api.github.com/users/bgirard/gists{/gist_id}","starred_url":"https://api.github.com/users/bgirard/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bgirard/subscriptions","organizations_url":"https://api.github.com/users/bgirard/orgs","repos_url":"https://api.github.com/users/bgirard/repos","events_url":"https://api.github.com/users/bgirard/events{/privacy}","received_events_url":"https://api.github.com/users/bgirard/received_events","type":"User","site_admin":false},"created_at":"2015-07-24T06:22:09Z","updated_at":"2015-07-24T06:22:09Z","body":"I got the following:\r\n -> (session doesn't look interactive, aborting emergency debugging)\r\n\r\nmozilla@mozgfx-rr-orange-hunter-1:~/mozilla-central/tree$ ~/rr/obj/bin/rr dump ~/.rr/latest-trace | tail -n 100\r\nhttps://pastebin.mozilla.org/8840514"}}