Bug 52722 - Crash in mono_gc_alloc_vector loading project in VSMac
Summary: Crash in mono_gc_alloc_vector loading project in VSMac
Alias: None
Product: Runtime
Classification: Mono
Component: GC ()
Version: unspecified
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2017-02-23 20:30 UTC by Alex Corrado [MSFT]
Modified: 2017-04-24 20:41 UTC (History)
3 users (show)

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

VS Mac IDE log (107.77 KB, text/plain)
2017-02-23 20:30 UTC, Alex Corrado [MSFT]
Crash reporter log (159.40 KB, text/plain)
2017-02-23 20:31 UTC, Alex Corrado [MSFT]

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Description Alex Corrado [MSFT] 2017-02-23 20:30:29 UTC
Created attachment 19930 [details]
VS Mac IDE log

See attached crash log and VS Mac log for managed and native stack traces.

> $ mono64 --version
> Mono JIT compiler version 4.8.0 (mono-4.8.0-branch/135ebee Mon Jan 30 12:03:00 EST 2017)
> Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
>	TLS:           normal
>	SIGSEGV:       altstack
>	Notification:  kqueue
>	Architecture:  amd64
>	Disabled:      none
>	Misc:          softdebug 
>	LLVM:          yes(3.6.0svn-mono-master/8b1520c)
>	GC:            sgen
Comment 1 Alex Corrado [MSFT] 2017-02-23 20:31:47 UTC
Created attachment 19931 [details]
Crash reporter log
Comment 2 Vlad Brezae 2017-03-07 00:48:13 UTC
Looks like an sgen root contains a reference to a nursery object that it's missing its least significant byte.

Is this reproductible ? At least lldb attaching could be useful.
Comment 3 Vlad Brezae 2017-04-24 20:41:06 UTC
Fixed on 5.0 by bdf17346a6cea527160dd56b5ff448cd296a9da5