Notice (2018-05-24): bugzilla.xamarin.com is now in
Please join us on
Visual Studio Developer Community and in the
Mono organizations on
GitHub to continue tracking issues. Bugzilla will remain
available for reference in read-only mode. We will continue to work
on open Bugzilla bugs, copy them to the new locations
as needed for follow-up, and add the new items under Related
Our sincere thanks to everyone who has contributed on this bug
tracker over the years. Thanks also for your understanding as we
make these adjustments and improvements for the future.
Please create a new report on
GitHub or Developer Community with
your current version information, steps to reproduce, and relevant error
messages or log files if you are hitting an issue that looks similar to
this resolved bug and you do not yet see a matching new report.
I have a program which consistently fails with the following exception when doing a CPU intensive operation using a Parallel operation.
System.NullReferenceException: Object reference not set to an instance of an object
at System.Net.ServicePoint.CheckAvailableForRecycling (System.DateTime& outIdleSince) [0x00000] in <filename unknown>:0
at System.Net.ServicePoint.IdleTimerCallback (System.Object obj) [0x00000] in <filename unknown>:0
at System.Threading.Timer+Scheduler.TimerCB (System.Object o) [0x00000] in <filename unknown>:0
Seems similar to the bug below which has been resolved, but the stack trace is different.
My system is Ubuntu server running on AMD64.
Mono version: (Stable 126.96.36.199/c99aa0c)
I believe the exception also used to happen on 3.9.
I can provide the application if necessary, but it may only happen on lower spec. processors depending on how long it takes to complete the task.
*** This bug has been marked as a duplicate of bug 32685 ***