On Thu, 4 Apr 2019, Tycho Andersen wrote:
> leaq -PTREGS_SIZE(%rax), %rsp
> UNWIND_HINT_FUNC sp_offset=PTREGS_SIZE
>
> + /*
> + * If we oopsed in an interrupt handler, interrupts may be off. Let's
> turn
> + * them back on before going back to "normal" code.
> + */
> + sti
That breaks the paravirt muck and tracing/lockdep.
ENABLE_INTERRUPTS() is what you want plus TRACE_IRQ_ON to keep the tracer
and lockdep happy.
Thanks,
tglx
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