linux-kernel - compat_sys_times() bogus until jiffies >= 0.

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Message-ID: <20071107224722.GA20204@old.davidb.org>
Date:	Wed, 7 Nov 2007 14:47:22 -0800
From:	David Brown <lkml@...idb.org>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: compat_sys_times() bogus until jiffies >= 0.

compat_sys_times() has bogus return until jiffies is >= 0.  I discovered
this running LTP within 5 minutes of booting.

The return result

	return compat_jiffies_to_clock_t(jiffies);

will return '-1' to user space and set the negated clock_t value to errno.

I'm not sure what the correct fix for this is.  I can come up with a patch
if anyone has ideas on how to fix it.

At minimum, perhaps it should return a sane errno value.

Thanks,
David Brown
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