ESXi hosts intermittently fail with a purple diagnostic screen and an error VERIFY bora/vmkernel/sched/cpusched.c

Products

• VMware vSphere ESXi

Issue/Introduction

Here is an excerpt of the stack trace displayed on the Purple Diagnostic Screen (PSOD).

@BlueScreen: VERIFY bora/vmkernel/sched/cpusched.c:#####
...
0x############:[0x############]Res6AffMgr_AllocResourcesInt@esx#nover+0x### stack: 0x0
0x############:[0x############]Res6AffMgr_AllocResources@esx#nover+0x## stack: 0x0
...

Environment

VMware ESXi 7.0

Cause

A race condition can occur when a VMFS volume is opened and immediately closed. This concurrent access can lead to a state where a spinlock remains locked, causing the ESXi host to crash with PSOD.

Resolution

ESXi 7.0 U3l has the fix for this.

 

Additional Information

VMware ESXi 7.0 Update 3l Release Notes