On Thu, Feb 18, 2016 at 08:46:20AM +0100, Peter Zijlstra wrote:
> On Wed, Feb 17, 2016 at 05:38:43PM -0500, Sasha Levin wrote:
> > Hey Peter,
> >
> > I seem to be hitting a warning added by this patch:
> >
> > [ 258.890172] WARNING: CPU: 5 PID: 14801 at kernel/events/core.c:226
> > event_functi
On Wed, Feb 17, 2016 at 05:38:43PM -0500, Sasha Levin wrote:
> Hey Peter,
>
> I seem to be hitting a warning added by this patch:
>
> [ 258.890172] WARNING: CPU: 5 PID: 14801 at kernel/events/core.c:226
> event_function+0x3a7/0x550()
Yes, I've been chasing this one for the past few days.
I ha
On 01/11/2016 11:25 AM, Peter Zijlstra wrote:
> There is one common bug left in all the event_function_call() users,
> between loading ctx->task and getting to the remote_function(),
> ctx->task can already have been changed.
>
> Therefore we need to double check and retry if ctx->task != current.
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