ESXi host fails with the error: PANIC bora/vmkernel/main/dlmalloc.c:xxxx - Corruption in dlmalloc
Article ID: 317635
Updated On:
Products
VMware vSphere ESXi
Issue/Introduction
Symptoms:
- The ESXi host fails with the error:
PANIC bora/vmkernel/main/dlmalloc.c:xxxx - Corruption in dlmalloc
- In the /var/log/vmkernel.log file, similar entries are seen:
@BlueScreen: PANIC bora/vmkernel/main/dlmalloc.c:4907 - Corruption in dlmalloc
Code start: 0x418029600000 VMK uptime: 234:01:32:49.087
0x43949ed1b360:[0x418029677ada]PanicvPanicInt@vmkernel#nover+0x37e stack: 0x43949ed1b3f8
0x43949ed1b3f0:[0x418029677da5]Panic_NoSave@vmkernel#nover+0x4d stack: 0x43949ed1b450
0x43949ed1b450:[0x41802962cb0b]DLM_free@vmkernel#nover+0x6c7 stack: 0x8
0x43949ed1b460:[0x418029629bf1]Heap_Free@vmkernel#nover+0xb9 stack: 0xbad000e
0x43949ed1b4b0:[0x418029646001]Dump_SetFile@vmkernel#nover+0x155 stack: 0x4303bfdef3b0
0x43949ed1b5a0:[0x4180296461cf]SystemVsi_DumpFileSet@vmkernel#nover+0x4b stack: 0x0
0x43949ed1b5c0:[0x41802995573b]VSI_SetInfo@vmkernel#nover+0x41f stack: 0x4fc
0x43949ed1b650:[0x418029bfccd8]UWVMKSyscallUnpackVSI_Set@<None>#<None>+0x394 stack: 0x0
0x43949ed1bef0:[0x418029bbb4f0]User_UWVMKSyscallHandler@<None>#<None>+0xb4 stack: 0xffb0b9c8
0x43949ed1bf20:[0x41802968e3f1]User_UWVMKSyscallHandler@vmkernel#nover+0x1d stack: 0x0
0x43949ed1bf30:[0x4180296c7044]gate_entry_@vmkernel#nover+0x0 stack: 0x0
Cause
This issue occurs because multiple esxcfg-dumppart threads attempt to free memory which has been used for configuring the dump partition.
For example:
Thread A checks if there are entries to be freed and proceeds to free them, while within the same time frame, Thread B is also attempting to free the same entries.
Resolution
This issue is resolved in
- VMware ESXi 5.5 P11 (ESXi550-201709001) available at VMware Downloads
- VMware ESXi 6.0 Update 3, available at VMware Downloads
- VMware ESXi 6.5 P01 (ESXi650-201703001), available at VMware Downloads
Additional Information
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