设备：S5590-28S8XC-EI Version 7.1.070, Release 8307P10
异常重启
Slot 1:
Uptime is 2 weeks,2 days,0 hours,54 minutes
BOARD TYPE: S5590-28S8XC-EI
DRAM: 2048M bytes
FLASH: 3687M bytes
PCB Version: VER.A
Bootrom Version: 114
CPLD 1 Version: 002
CPLD 2 Version: 002
Power CPLD Version: None
PowChip Version: None
Release Version: S5590EI-8307P10
Patch Version: R8307P10HS03
Reboot Cause: KernelAbnormalReboot
===============display kernel exception 20 verbose slot 1 ===============
--------------------- Exception record 1 ---------------------
Description : Soft watchdog detected hard LOCKUP on cpu 1 ----CPU1在中断中执行时间过长，触发软件看门狗 狗叫重启
Recorded at : 2011-01-10 21:29:22.775999
Occurred at : 2011-01-10 21:29:22.775999
Instruction address : 0xffffff80804b9c7c
Thread : BMDT (TID: 5529)
Context : irq context
Slot : 1
Cpu : 0
VCPU ID : 1
Kernel module info : module name (kpatch_system_kernel_HS03_systemko_merge) module address (0xffffff8009bad000)
module name (kpatch_ver_2_1) module address (0xffffff8009b98000)
module name (kpatch_core) module address (0xffffff8009b89000)
module name (system) module address (0xffffff800073a000)
module name (addon) module address (0xffffff80006a0000)
============ History interrupt info of slot 1 ============
------------ hard irq trace ------------
on cpu 0:
irq status: 0
last irq no: 2
max irq no: 28
last enter time: @141176ms
last exit time: @141176ms
max consuming time: 0ms
on cpu 1:
irq status: 0
last irq no: 2 ----Cpu1在最后执行的中断类型是2号中断
max irq no: 2
last enter time: @141176ms
last exit time: @141176ms
max consuming time: 0ms
===============interrupt info ===============
CPU0 CPU1 CPU2 CPU3
1: 0 0 0 0 GICv3 29 Edge arch_timer
2: 3613627106 157412606 3499002895 1826403943 GICv3 30 Edge arch_timer ---2号中断是系统级架构定时器arch_timer，正常情况下会1ms超时从中断中退出一次，只能是该中断的定时器值发生bit翻转，才有超过28秒不退出的情况，触发watchdog重启。
6: 795 0 0 0 GICv3 39 Level uart-pl011
根据异常重启记录的信息分析符合一个已知问题，建议升级R8336P11版本解决。
202512010774
问题现场：设备低概率异常重启
产生条件：设备运行中内存发生bit翻转。