On Wed, Aug 19, 2020 at 10:46:36PM -0500, Josh Poimboeuf wrote:
> On Wed, Aug 19, 2020 at 05:14:18PM -0700, Andy Lutomirski wrote:
> > I'm pretty sure you have the buggy sequence of events right, but for
> > the wrong reason. There's nothing wrong with scheduling when
> > delivering SIGTRAP, but
On Wed, Aug 19, 2020 at 05:14:18PM -0700, Andy Lutomirski wrote:
> On Wed, Aug 19, 2020 at 3:47 PM Josh Poimboeuf wrote:
> > What amazes me is that it successfully schedules back to the end of the
> > #DB handler finish and everything keeps working.
> >
> > Do we not have assertions in the schedul
On Wed, Aug 19, 2020 at 3:47 PM Josh Poimboeuf wrote:
>
> On Wed, Aug 19, 2020 at 11:35:34PM +0200, Peter Zijlstra wrote:
> > On Wed, Aug 19, 2020 at 12:28:16PM -0700, Kyle Huey wrote:
> >
> > > > I'm guess that is not the expected outcome, is that the same failure you
> > > > saw?
> > >
> > > Yes
On Wed, Aug 19, 2020 at 11:35:34PM +0200, Peter Zijlstra wrote:
> On Wed, Aug 19, 2020 at 12:28:16PM -0700, Kyle Huey wrote:
>
> > > I'm guess that is not the expected outcome, is that the same failure you
> > > saw?
> >
> > Yes. Is status also 0x4d00 for you?
>
> Indeed.
>
> > The program is e
On Wed, Aug 19, 2020 at 12:28:16PM -0700, Kyle Huey wrote:
> > I'm guess that is not the expected outcome, is that the same failure you
> > saw?
>
> Yes. Is status also 0x4d00 for you?
Indeed.
> The program is expected to complete with no assertions firing.
When I comment out the break-on-exec
On Wed, Aug 19, 2020 at 11:42 AM wrote:
>
> On Wed, Aug 19, 2020 at 10:53:58AM -0700, Kyle Huey wrote:
> > rr, a userspace record and replay debugger[0], has a test suite that
> > attempts to exercise strange corners of the Linux API. One such
> > test[1] began failing after 2bbc68f8373c0631ebf137
On Wed, Aug 19, 2020 at 10:53:58AM -0700, Kyle Huey wrote:
> rr, a userspace record and replay debugger[0], has a test suite that
> attempts to exercise strange corners of the Linux API. One such
> test[1] began failing after 2bbc68f8373c0631ebf137f376fbea00e8086be7.
> I have not tried to understan
rr, a userspace record and replay debugger[0], has a test suite that
attempts to exercise strange corners of the Linux API. One such
test[1] began failing after 2bbc68f8373c0631ebf137f376fbea00e8086be7.
I have not tried to understand what has changed in the kernel here but
since the commit message
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