Oracle VM: Hang With "mlx4_ib_tunnel_comp_worker at ffffffffa0435d50 [mlx4_ib]"
Last updated on JULY 27, 2017
Applies to:Oracle VM - Version 3.2.9 and later
Exalogic Elastic Cloud X5-2 Hardware - Version X5 to X5 [Release X5]
Information in this document applies to any platform.
This issue happens on Oracle Server X5-2 with OVM 3.2.x installed. The impacted kernel is 2.6.39-400.277.1.el5uek. When the bug is triggered, a dom0 server gets hung. In the KDUMP-generated vmcore file, entries similar to these can be seen:
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