in reply to Perl Deep Recursion locks up modern linuxes?

What happens if you turn off safe signals: set PERL_SIGNALS=unsafe?

If that allows ^C to interrupt the recursion; you then need to look at what has changed in the kernel that affects that difference in code path.

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Re^2: Perl Deep Recursion locks up modern linuxes?
by vsespb (Chaplain) on Oct 09, 2016 at 17:08 UTC
    .. but just in case I tried export PERL_SIGNALS=unsafe. Does not help.
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Re^2: Perl Deep Recursion locks up modern linuxes?
by vsespb (Chaplain) on Oct 09, 2016 at 17:02 UTC
    I don't think it's related to signals, whole system freezes - Ctrl-Alt-F1 (switch to root console), Ctrl-Alt-Del, screen, mouse. Nothing works. Mouse does not move, screen does not update. For example if you turn on/off laptop charger or terminate wifi, charger/wifi icon will not update. It's reproducible on real hardware and on Virtual box VM (of course only guest system freezes), and confirmed by Ubuntu team member.
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      Ouch! And very strange.

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