From: Andrew Morton <akpm@linux-foundation.org>
To: David Miller <davem@davemloft.net>
Cc: lkml@davidb.org, linux-kernel@vger.kernel.org,
drepper@redhat.com, mtk-manpages@gmx.net
Subject: Re: compat_sys_times() bogus until jiffies >= 0.
Date: Wed, 7 Nov 2007 17:13:44 -0800 [thread overview]
Message-ID: <20071107171344.a9f0e955.akpm@linux-foundation.org> (raw)
In-Reply-To: <20071107.165022.69369307.davem@davemloft.net>
> On Wed, 07 Nov 2007 16:50:22 -0800 (PST) David Miller <davem@davemloft.net> wrote:
> From: Andrew Morton <akpm@linux-foundation.org>
> Date: Wed, 7 Nov 2007 15:28:33 -0800
>
> > Perhaps this is a bug in glibc: it is interpreting the times() return value
> > in the same way as other syscalls.
>
> The problem is more likely that we are failing to
> invoke force_successful_syscall_return() here.
>
> Otherwise the syscall return path interprets negative
> values as errors, and sets the cpu condition codes.
>
> And that is what userspace is actually checking for
> to determine if there is an error or not.
hm, I'd forgotten about that.
It seems to be a no-op on lots of architectures?
next prev parent reply other threads:[~2007-11-08 1:14 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-07 22:47 compat_sys_times() bogus until jiffies >= 0 David Brown
2007-11-07 23:28 ` Andrew Morton
2007-11-08 0:18 ` Andrew Morton
2007-11-08 0:54 ` Andreas Schwab
2007-11-08 1:17 ` Andrew Morton
2007-11-08 1:53 ` Paul Mackerras
2007-11-08 2:09 ` David Miller
2007-11-08 10:20 ` Andreas Schwab
2007-11-08 14:42 ` Chris Friesen
2007-11-09 18:20 ` Ulrich Drepper
2007-12-20 11:36 ` Michael Kerrisk
2007-12-20 11:51 ` David Miller
2007-12-22 0:42 ` Andi Kleen
2007-12-22 1:41 ` David Miller
2007-12-22 1:45 ` David Miller
2007-12-22 1:53 ` Andi Kleen
2007-12-22 4:36 ` David Miller
2007-12-22 12:47 ` Andi Kleen
2007-12-22 1:49 ` Andi Kleen
2007-11-08 19:25 ` Denys Vlasenko
2007-11-08 3:07 ` Andrew Morton
2007-11-08 3:13 ` David Miller
2007-11-08 5:15 ` Paul Mackerras
2007-11-08 6:24 ` David Miller
2007-11-08 4:59 ` Paul Mackerras
2007-11-08 5:20 ` Andrew Morton
2007-11-08 5:36 ` Paul Mackerras
2007-11-08 6:12 ` Andrew Morton
2007-11-08 6:25 ` David Miller
2007-11-08 7:09 ` Andrew Morton
2007-11-08 7:14 ` David Miller
2007-11-08 8:53 ` Paul Mackerras
2007-11-08 6:22 ` David Miller
2007-11-08 19:27 ` Denys Vlasenko
2007-11-08 0:50 ` David Miller
2007-11-08 1:13 ` Andrew Morton [this message]
2007-11-08 6:00 ` David Brown
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