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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [DRM/i915][Bisected] Kernel panic in setup_vector_irq() with HDMI LPE driver while putting offline CPU thread back to online"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103731#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [DRM/i915][Bisected] Kernel panic in setup_vector_irq() with HDMI LPE driver while putting offline CPU thread back to online"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103731">bug 103731</a>
from <span class="vcard"><a class="email" href="mailto:augustine.chen@intel.com" title="Augustine Chen <augustine.chen@intel.com>"> <span class="fn">Augustine Chen</span></a>
</span></b>
<pre>Two findings here...
The first is there is no well-recognized chip_data of HDMI LPE audio IRQ which
makes x86 APIC driver try to handle a invalid pointer and then causes kernel
panic.
The second is to disable CONFIG_CPUMASK_OFFSTACK to make cpumask_var_t be an
array type. Then nothing about invalid pointer in x86 APIC driver will happen.</pre>
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