[Bug 193269] panic: kdb_switch: did not reenter debugger (from sysctl debug.kdb.enter=1 w/ i915kms)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193269

Jean-Sébastien Pédron <dumbbell at FreeBSD.org> changed:

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                 CC|                            |dumbbell at FreeBSD.org

--- Comment #2 from Jean-Sébastien Pédron <dumbbell at FreeBSD.org> ---
Created attachment 146807
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=146807&action=edit
USe DELAY() when DDB is active

Andriy, you were right. Using DELAY() instead of pause() when kdb_active is
true fixes the panic for me. I attached the patch I used.

Could you please elaborate on the kdb_trap requirements? What should we do in
DRM to fix this?

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