MONO_GC_PARAMS=bridge=Bridge ../mini/mono-sgen sgen-bridge.exe x MONO_GC_PARAMS=stack-mark=conservative,bridge=Bridge ../mini/mono-sgen sgen-bridge.exe
Warning: Degraded allocation.  Consider increasing nursery-size if the warning persists.
Unable to find ip offset 0xc0 in callsite list of (wrapper stelemref) object:virt_stelemref_sealed_class (intptr,object).
* Assertion: should not be reached at mini-gc.c:902

Stacktrace:

  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) object.__icall_wrapper_mono_gc_alloc_vector (intptr,intptr,intptr) <0xffffffff>
  at (wrapper alloc) object.AllocVector (intptr,intptr) <0xffffffff>
  at System.Collections.ArrayList.EnsureCapacity (int) <0x00067>
  at System.Collections.ArrayList.Add (object) <0x0002f>
  at Driver.<Main>m__0 (object) <0x00052>
  at System.Threading.Thread.StartInternal () <0x0009d>
  at (wrapper runtime-invoke) object.runtime_invoke_void__this__ (object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

	../mini/mono-sgen() [0x4988c7]
	/lib/x86_64-linux-gnu/libpthread.so.0(+0xfc60) [0x7fa2dab87c60]
	/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35) [0x7fa2da816d05]
	/lib/x86_64-linux-gnu/libc.so.6(abort+0x186) [0x7fa2da81aab6]
	../mini/mono-sgen() [0x5f92cb]
	../mini/mono-sgen() [0x5f9403]
	../mini/mono-sgen() [0x4b12a1]
	../mini/mono-sgen() [0x5935f1]
	../mini/mono-sgen() [0x598232]
	../mini/mono-sgen() [0x59bf77]
	../mini/mono-sgen() [0x59bfcf]
	../mini/mono-sgen() [0x59f90a]
	../mini/mono-sgen() [0x566093]
	../mini/mono-sgen() [0x5663ec]
	[0x405ae186]

Debug info from gdb:

Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted