For some exceptional cases (e.g., https://github.com/spdk/spdk/issues/1486), we may detect POLLERR or other events. So for those events, we can just ingore it, but not use SPDK_UNREACHABLE. Signed-off-by: Ziye Yang <ziye.yang@intel.com> Change-Id: I073575408783ff75e50b40d45ddf09388a2cab96 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/3262 Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>