[Mono-list] Mono heapshot profiler woes

Nicholas Frechette zeno490 at gmail.com
Mon Oct 31 10:25:23 EDT 2011

I'm attempting to track down a memory leak in my application.
I managed to run heapshot a number of times as described in the wiki
page but unfortunately, now my application fails to start every time
with the profiler enabled.

Running a debug build on ubuntu 11.04 + mono 2.10.2 produces:
[mono-2.10] ~/projects/rovisualizer-dev/rovisualizer/bin/Debug @ mono
--gc=sgen --profile=log:heapshot rovisualizer.exe

Native stacktrace:

	mono-sgen() [0x80e30eb]
	mono-sgen() [0x81293ab]
	mono-sgen() [0x805d3c1]
	mono-sgen() [0x8188d47]
	mono-sgen(mono_object_new_alloc_specific+0x28) [0x8166bd8]
	mono-sgen(mono_object_new_specific+0x80) [0x8166cd0]
	mono-sgen(mono_exception_from_name_domain+0x3e) [0x8204dbe]
	mono-sgen(mono_exception_from_name+0x28) [0x8204e58]
	mono-sgen(mono_get_exception_null_reference+0x23) [0x82050f3]
	mono-sgen() [0x80e3f03]
	mono-sgen() [0x8127d86]
	mono-sgen() [0x8062158]
	mono-sgen(mono_runtime_invoke+0x3e) [0x816670e]
	mono-sgen(mono_runtime_exec_main+0xd8) [0x8168f48]
	mono-sgen(mono_main+0x1878) [0x80bc9d8]
	mono-sgen() [0x805707e]
	/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x126e37]
	mono-sgen() [0x8056ed1]

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


Any ideas?

More information about the Mono-list mailing list