[Bug 105888] [CNL] System hang: GEM_BUG_ON(buf[2 * head + 1] != port->context_id) during piglit/gem_ctx_switch, masked by tracing enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105888

--- Comment #10 from Mika Kuoppala <mika.kuoppala at intel.com> ---
I managed to hit this with gem_ctx_switch also:

[ 1469.191109] [IGT] gem_ctx_switch: starting subtest bsd-interruptible
[ 1609.465467] execlists_submission_tasklet:1025 GEM_BUG_ON(buf[2 * head + 1]
!= port->context_id)
[ 1609.465527] ------------[ cut here ]------------
[ 1609.465530] kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:1025!

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