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Date: Fri, 14 Dec 2012 16:39:42 +0200
From: Andriy Gapon <avg@FreeBSD.org>
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To: Alexander Yerenkow <yerenkow@gmail.com>
Subject: Re: Reproduceable hang
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on 14/12/2012 14:46 Alexander Yerenkow said the following:
> Setup: ESXi 5.1.0
> Seems this happens when vmmemctl.ko loaded (from their latest vmtools), and when
> you give a bit more memory than there is free.

This is weird... As I can see in os_kmem_alloc function (in
modules/freebsd/vmmemctl/os.c of /usr/ports/emulators/open-vm-tools port), the
object lock is correctly acquired there.  I suspect some binary incompatibility
between the module and your kernel.  Try to recompile the module again using the
same source tree tree and the option.

> 2012/12/13 Andriy Gapon <avg@freebsd.org <mailto:avg@freebsd.org>>
> 
>     on 13/12/2012 12:46 Alexander Yerenkow said the following:
>     > 2012/12/13 Alexander Yerenkow <yerenkow@gmail.com <mailto:yerenkow@gmail.com>>
>     >
>     >> Hello there.
>     >> I have here 100% reproduceable hangs when run one custom java program.
>     >> Can someone look into?
>     >>
>     >> I can give some more info (some other trace) if required.
>     >>
>     >>
>     >
>     >
>     > If someone didn't get attachment - here's link to screenshot
>     >
>     > https://www.box.com/s/fir8ntjc4rjq5xv0vbyl
> 
>     Looks like either a bug or an "out-of-sync" issue in whatever (virtualization?)
>     driver that has function OS_ReservedPageAlloc.

-- 
Andriy Gapon