RHEL5: Kernel panic with message: "Kernel panic - not syncing: An NMI occurred, please see the Integrated Management Log for details."
Issue
- Host rebooted itself and dumped vmcore.
- Kernel panic with following call traces.
PID: 0 TASK: ffffffff80308b60 CPU: 0 COMMAND: "swapper"
#0 [ffffffff80449d80] crash_kexec at ffffffff800adb59
#1 [ffffffff80449e40] panic at ffffffff80091b68
#2 [ffffffff80449f30] hpwdt_pretimeout at ffffffff88e7c4bb [hpwdt]
#3 [ffffffff80449f40] do_nmi at ffffffff8006588a
#4 [ffffffff80449f50] nmi at ffffffff80064eef
[exception RIP: mwait_idle+54]
RIP: ffffffff80057112 RSP: ffffffff803fbf90 RFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff800570dc RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8030a718
RBP: 0000000000090000 R8: ffffffff803fa000 R9: 0000000000000017
R10: ffff810001324710 R11: ffffffff80225a0e R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
--- <NMI exception stack> ---
#5 [ffffffff803fbf90] mwait_idle at ffffffff80057112
#6 [ffffffff803fbf90] cpu_idle at ffffffff800492c4
Environment
- Red Hat Enterprise Linux 5
- kernel-2.6.18-194.32.1.el5
- HP Machine
- HP Watchdog Timer Driver ( hpwdt )
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.