Hi!
I configured my system to collect core dumps on app crash, but it turned out that in some cases the system becomes unresponsive after a user app crashes.
I was unable to reproduce the issue crashing simple C or even C# (by .NET runtime) programs, but for example it always happens after crashes of our unit tests (NUnit framework, and .NET 7 runtime): the corresponding core file appears on the disk, but an attempt to copy/open that file hangs forever:
$ ls -la .../core.dotnet.5406.511
-r-------- 1 ... staff 30273536 Jan 2 09:19 .../core.dotnet.5406.511
$ cp /opt/buildAgent/temp/buildTmp/core.dotnet.5406.511 1
^C^C^C^C^C^C^C^C^C^C^Z(hangs)
And now at that time I cannot open Activity Monitor, or Console, or Terminal (they are just bouncing in the Dock), sw_vers command doesn't work (as well as lldb and sample), and according to ps they get stuck in an uninterruptible wait:
$ sw_vers
(hangs)^C
$ sudo lldb -p 5477
(hangs)^C
$ sudo sample -p 5477
(hangs)^C [Interrupted]
Not currently sampling -- exiting immediately.
$ ps ax | grep " U"
1 ?? Us 1:03.58 /sbin/launchd
5406 ?? U 0:59.11 .../dotnet exec [...]
5477 s000 U+ 0:00.00 cp .../core.dotnet.5406.511 1
5496 s001 S+ 0:00.00 grep U
After a reboot, the core file is not saved and everything works fine again until the same case:
$ ls -la .../core.dotnet.5406.511
-r-------- 1 ... staff 0 Jan 2 09:19 .../core.dotnet.5406.511
Just in case, here are the entitlements of dotnet:
$ codesign -d --entitlement :- .../dotnet
Executable=.../dotnet
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>com.apple.security.cs.allow-jit</key>
<true/>
<key>com.apple.security.cs.allow-dyld-environment-variables</key>
<true/>
<key>com.apple.security.cs.disable-library-validation</key>
<true/>
<key>com.apple.security.cs.debugger</key>
<true/>
<key>com.apple.security.get-task-allow</key>
<true/>
</dict>
</plist>
I didn't see this issue on macOS Catalina 10.15.7, is there anything I can help with?
-- .NET SDK 7.0.100 macOS Big Sur 11.7.1