Host PSOD with qedf panic.

Products

• VMware vSphere ESXi

Issue/Introduction

• Host Crashes with PSOD

YYYY-MM-DDTHH:MM:SS1.219Z In(14) LogEFI[2098958]: #PF Exception 14 in world 2098693:ql_fcoe_dela IP 0x420017c85a52 addr 0x40
YYYY-MM-DDTHH:MM:SS In(14) LogEFI[2098958]: PTEs:0x8137b67023;0x8037ca8023;0x8037cae023;0x0;
YYYY-MM-DDTHH:MM:SS In(14) LogEFI[2098958]:
YYYY-MM-DDTHH:MM:SS In(14) LogEFI[2098958]: Module(s) involved in panic: [qedf 2.74.1.0-1OEM.800.1.0.20613240 (External)]
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)cr0=0x8001003d cr2=0x40 cr3=0x4beb3000 cr4=0x14216c
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)FMS=06/6a/6 uCode=0xd0003f5
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)frame=0x4539eb31bea0 ip=0x420017c85a52 err=0x0 rflags=0x10206
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)rax=0x1 rbx=0x432245edf920 rcx=0x140000
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)rdx=0x4200170db10f rbp=0x0 rsi=0x0
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)rdi=0x0 r8=0x1 r9=0x4539def9f940
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)r10=0xf4e680c r11=0x2 r12=0x432245b88018
YYYY-MM-DDTHH:MM:SS In(14) LogEFI: cpu93:2098693)r13=0x0 r14=0x0 r15=0x0
YYYY-MM-DDTHH:MM:SS In(14) LogEFI[2098958]: *PCPU93:2098693/ql_fcoe_delayed_wq
YYYY-MM-DDTHH:MM:SS In(14) LogEFI[2098958]: PCPU  0: 

Environment

Esx 8.0.3

Cause

This crash occurs due to a thread passed ql_fcoe_session data structure which was 0x0 to _DereferenceSession(), while it was not 0x0 just some instructions prior. It seemed to be caused by a race condition.

Resolution

This an Async driver issue, please engage HW vendors for further investigation.