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Cisco Bug: CSCum53250 - PSOD observed on ESXi 5.5

Last Modified

Jan 28, 2017

Products (2)

  • Cisco Nexus 1000V Switch for VMware vSphere
  • Cisco Nexus 1000V Switch

Known Affected Releases


Description (partial)

a VMware ESXi host running a Nexus1000v VEM may crash with a "Purple Screen of Death" (PSOD) containing the reason "no heartbeat" and a backtrace similar to the following:

0x41243d29d2f0:[0x418005077c4d]MCS_UnlockCommonContended@vmkernel#nover+0x11 stack: 0x410c20dc60d0
0x41243d29d310:[0x4180050263f5]vmk_SpinlockUnlock@vmkernel#nover+0x39 stack: 0x41243d29d4d0
0x41243d29d320:[0x418005cb165a]vns_bind_flow_to_conn@com.vmware.vmkapi#v2_2_0_0+0x53a stack: 0x1
0x41243d29d4d0:[0x418005cbed04]vns_flow_process_vsn_packet@com.vmware.vmkapi#v2_2_0_0+0x1b74 stack:
0x41243d29d620:[0x418005c978fa]sf_vns_sdp_intport_egress_stage@com.vmware.vmkapi#v2_2_0_0+0x93a sta
0x41243d29d730:[0x418005a48d00]sf_sched_packet_list@com.vmware.vmkapi#v2_2_0_0+0xbf8 stack: 0x41243
0x41243d29d770:[0x418005d06d5a]svs_packet_list_receive@com.vmware.vmkapi#v2_2_0_0+0x126 stack: 0x41
0x41243d29d7f0:[0x418005a1d65d]svs_set_pcpu_pshandle@com.vmware.vmkapi#v2_2_0_0+0x2f9 stack: 0x410a
0x41243d29d860:[0x41800517a8f7]Port_InputResume@vmkernel#nover+0x18f stack: 0x4109adf222b0
0x41243d29d8c0:[0x418005166cab]Net_AcceptRxList@vmkernel#nover+0x16f stack: 0x1

ESXi 5.5
Fragmented traffic exists to/from the host which may cause a PSOD due to vpath handling
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