Description of problem: Randomly, user sessions are booted after logging in. Usually a stable connection can be acquired after a few retries. Version-Release number of selected component (if applicable): # rpm -q x2goserver x2goserver-4.1.0.3-3.fc30.x86_64 How reproducible: Randomly Steps to Reproduce: 1. Login and wait 20 to 30 seconds (I was using LXDE and occasionally running "sudo -i" in a terminal, but I don't think that is necessary to trigger the bug). Actual results: Session killed shortly after logging in. Expected results: Session should not be killed. Additional info: To troubleshoot this issue, I did the following: # mkdir /etc/systemd/system/x2gocleansessions.service.d # cat << END > /etc/systemd/system/x2gocleansessions.service.d/override.conf [Service] Type=simple ExecStart= ExecStart=/usr/sbin/x2gocleansessions -d END # systemctl daemon-reload # systemctl restart x2gocleansessions.service After sprinkling /usr/sbin/x2gocleansessions with printf statements and x2gocleansessions.service a few times, I eventually traced the problem down to check_pid() being called with a NULL value for $pid (not sure why; seems to be some sort of race condition). The following patch seems to resolve the issue. --- x2gocleansessions.a 2019-09-21 16:46:53.327948763 -0500 +++ x2gocleansessions.b 2019-09-21 16:46:10.076184475 -0500 @@ -62,7 +62,7 @@ my $pid=shift; my $sess=shift; my $sec=shift; - if ($sec < 30) + if (!$pid || $sec < 30) { return 1; }
Filed upstream
Thanks. I've been running with this patch for a while now and it is working great. That other bug report was a false lead though. It probably shouldn't have been included in the upstream filing.
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