Bug 42623 - Deadlock when threads are quickly created & destroyed with the debugger attached
Summary: Deadlock when threads are quickly created & destroyed with the debugger attached
Alias: None
Product: iOS
Classification: Xamarin
Component: Debugger ()
Version: master
Hardware: PC Mac OS
: --- normal
Target Milestone: (C9)
Assignee: Ludovic Henry
Depends on: 50117
  Show dependency tree
Reported: 2016-07-18 11:11 UTC by Rolf Bjarne Kvinge [MSFT]
Modified: 2017-02-03 10:35 UTC (History)
8 users (show)

Tags: C8SR1
Is this bug a regression?: ---
Last known good build:

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Description Rolf Bjarne Kvinge [MSFT] 2016-07-18 11:11:12 UTC
This happens once in a while when running the watchOS System tests in the simulator with the debugger.

Native backtrace for all threads: https://gist.github.com/rolfbjarne/2d8f42d8f064157673d984aaf542deb0

Application output: https://gist.github.com/rolfbjarne/3b63a2fd3e211a66bae9c5ea64bdb315
Comment 1 Rolf Bjarne Kvinge [MSFT] 2016-07-18 11:14:05 UTC
I can reproduce this fairly easily by opening xamarin-macios/tests/bcl-tests/System-watchos.sln in XS, and running the System-watchos-app project.
Comment 3 Rodrigo Kumpera 2016-11-10 22:24:41 UTC

Can you look at this suspend bug?
Comment 5 Sebastien Pouliot 2016-12-14 23:40:12 UTC
@Rolf does this still happens ? if so can you reply to Ludovic ? thanks!
Comment 6 Rolf Bjarne Kvinge [MSFT] 2016-12-15 15:24:13 UTC
I run into bug #50117 now.
Comment 7 Timothy Risi 2017-01-17 20:40:57 UTC
The crash from 50117 happens before the deadlock, so we can't test whether this bug is still happening until that one is fixed.
Comment 8 Rolf Bjarne Kvinge [MSFT] 2017-02-03 10:35:20 UTC
I'm not able to reproduce this anymore.