From: "Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
To: Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: Serge Hallyn
<serue-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>
Subject: Re: [PATCH] cr_tests: Fix hang when robust futex lists are not restored during restart
Date: Thu, 9 Jul 2009 15:00:40 -0500 [thread overview]
Message-ID: <20090709200040.GA21053@us.ibm.com> (raw)
In-Reply-To: <20090709192207.GJ32310-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>
Quoting Matt Helsley (matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org):
> The robust futex test can hang if the kernel fails to properly set the robust
> list pointer. This currently happens during restart. The test should not
> hang and instead should report failure.
>
> Use a timeout to ensure that hangs are caught and reported as failure.
> The timeout should return ETIMEDOUT. This limits the total amount of time
> checkpoint/restart can take so a suitable timeout is essential here.
>
> Signed-off-by: Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
> Reported-by: Serge Hallyn <serue-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Hey Matt,
last month you sent out a (short) kernel patch for robust futexes.
Was that supposed to be enough to fully support c/r of robust futexes?
-serge
next prev parent reply other threads:[~2009-07-09 20:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-09 19:22 [PATCH] cr_tests: Fix hang when robust futex lists are not restored during restart Matt Helsley
[not found] ` <20090709192207.GJ32310-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>
2009-07-09 20:00 ` Serge E. Hallyn [this message]
[not found] ` <20090709200040.GA21053-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-07-09 20:06 ` Matt Helsley
[not found] ` <20090709200649.GL32310-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>
2009-07-09 20:14 ` Oren Laadan
2009-07-09 20:58 ` Serge E. Hallyn
[not found] ` <20090709205853.GA23637-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-07-10 0:21 ` Sukadev Bhattiprolu
[not found] ` <20090710002144.GA13085-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-07-10 23:34 ` Matt Helsley
[not found] ` <20090710233457.GA5213-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>
2009-07-11 20:56 ` Sukadev Bhattiprolu
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