On Fri, Aug 17, 2007 at 11:41:20AM -0400, John Blackwood wrote:
> Hi Neil,
>
> We've been having problems with this select patch change.
>
> Specifically -- previously, when a ptrace attach was done to a task
> blocked in a select() call and that task had a timeout value,
> the task would restart
Hi Neil,
We've been having problems with this select patch change.
Specifically -- previously, when a ptrace attach was done to a task
blocked in a select() call and that task had a timeout value,
the task would restart the select() call with an updated timeout value.
With this patch in place,
On Tue, Jan 23, 2007 at 09:59:26PM -0800, David Miller wrote:
> From: Neil Horman <[EMAIL PROTECTED]>
> Date: Tue, 16 Jan 2007 15:13:32 -0500
>
> > As it is currently written, sys_select checks its return code to convert
> > ERESTARTNOHAND to EINTR. However, the check is within an if (tvp) clause
From: Neil Horman <[EMAIL PROTECTED]>
Date: Tue, 16 Jan 2007 15:13:32 -0500
> As it is currently written, sys_select checks its return code to convert
> ERESTARTNOHAND to EINTR. However, the check is within an if (tvp) clause, and
> so if select is called from userspace with a NULL timeval, then
On Mon, Jan 22, 2007 at 11:24:06AM -0500, Neil Horman wrote:
> The error was reported to me second hand. I'm expecting a reproducer
> (although
> to date, I'm still waiting for it, so I may have jumped the gun here). In
> fact,
I've asked for a repoducer weeks ago and nothing happened, nobody
On Mon, Jan 22, 2007 at 08:03:53AM -0800, Linus Torvalds wrote:
>
>
> On Mon, 22 Jan 2007, Neil Horman wrote:
>
> > On Mon, Jan 22, 2007 at 02:59:56PM +0100, Paolo Ornati wrote:
> > >
> > > the ERESTARTNOHAND thing is handled in arch specific signal code,
> >
> > In the signal handling path ye
On Mon, 22 Jan 2007, Neil Horman wrote:
> On Mon, Jan 22, 2007 at 02:59:56PM +0100, Paolo Ornati wrote:
> >
> > the ERESTARTNOHAND thing is handled in arch specific signal code,
>
> In the signal handling path yes.
Right.
> Not always in the case of select, though. Check core_sys_select:
N
On Mon, Jan 22, 2007 at 02:59:56PM +0100, Paolo Ornati wrote:
> On Tue, 16 Jan 2007 15:13:32 -0500
> Neil Horman <[EMAIL PROTECTED]> wrote:
>
> > As it is currently written, sys_select checks its return code to convert
> > ERESTARTNOHAND to EINTR. However, the check is within an if (tvp) clause,
On Tue, 16 Jan 2007 15:13:32 -0500
Neil Horman <[EMAIL PROTECTED]> wrote:
> As it is currently written, sys_select checks its return code to convert
> ERESTARTNOHAND to EINTR. However, the check is within an if (tvp) clause, and
> so if select is called from userspace with a NULL timeval, then it
As it is currently written, sys_select checks its return code to convert
ERESTARTNOHAND to EINTR. However, the check is within an if (tvp) clause, and
so if select is called from userspace with a NULL timeval, then it is possible
for the ERESTARTNOHAND errno to leak into userspace, which is incorr
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