PSOD Usage error in dlmalloc vsfwd VSIPIoctlFlowData@(nsx-vsip)
Article ID: 317606
Updated On:
Products
VMware vSphere ESXi
Issue/Introduction
Symptoms:
PSOD is seen while collecting flows from the dfw kernel module.
The following may be observed on the stack:
PSOD Message: @BlueScreen: PANIC bora/vmkernel/main/dlmalloc.c:4924 - Usage error in dlmalloc
*PCPU : /vsfwd
@BlueScreen: #GP Exception 13 in world 70516:vsfwd @ 0x418024f468ff
0x4392b019ba88:[0x41802b221382]VSIPIoctlFlowData@(nsx-vsip)
PSOD is seen while collecting flows from the dfw kernel module.
The following may be observed on the stack:
PSOD Message: @BlueScreen: PANIC bora/vmkernel/main/dlmalloc.c:4924 - Usage error in dlmalloc
*PCPU : /vsfwd
@BlueScreen: #GP Exception 13 in world 70516:vsfwd @ 0x418024f468ff
0x4392b019ba88:[0x41802b221382]VSIPIoctlFlowData@(nsx-vsip)
Cause
Issue is in the flow collection when layer 7 firewall is enabled. The vsip module experiences a buffer overrun and overwrites the allocated memory.
Resolution
This issue is resolved in VMware NSX Data Center for vSphere 6.4.4.
Workaround:
- Disable flow collection/ipfix
OR
- disable any layer 7 rule.
i.e. change all Layer 7 (APP_) services to their Layer 4 counterpart
Feedback
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