Connectrix MDS 9148S 重新启动，无法处理地址0x0000003c处数据的内核分页请求

Summary: Connectrix MDS 9148S 已重新启动，无法处理地址为 0x0000003c 的数据的内核分页请求。

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Symptoms

由于内核死机，在 8.4（2d） 上运行的交换机 MDS 9148S 重新启动。 
`show system reset-reason module 1`
----- reset reason for Supervisor-module 1 (from Supervisor in slot 1) ---
1) At 952261 usecs after Mon Apr 24 05:28:51 2023
    Reason: Kernel Panic
    Service:
    Version: 8.4(2d)
No cores saved.
命令 show system internal kernel nvram-messages previous 输出显示以下内容： 
Unable to handle kernel paging request for data at address 0x0000003c
Faulting instruction address: 0xc02358cc
KGDB: Waiting for remote debugger
Start stack dumping
Moving to kernel stack
Done stack dumping
Start register dumping
Done register dumping
Done all dumping 4586 8196
**** KERNEL PANIC OCCURED*******
Writing reset reason. Irqs 1
Writing stack trace
Writing kernel traces
Starting dump of trace eventsTrace events filled bufferFinished dump of trace eventsin.dcos-telnetd:18248 /debugfs/tracing/per_cpu/cpu0/trace_pipe_raw read done, size 3010560
in.dcos-telnetd:18248 /debugfs/tracing/per_cpu/cpu1/trace_pipe_raw read done, size 3084288
Buffer read= 2089152
Resetting board
命令 show accounting log 指示同时配置终端宽度和终端长度，然后会话关闭。 
Mon Apr 24 05:20:52 2023:type=update:id=10.x.x.x@pts/1:user=scripten:cmd=terminal width 511 (SUCCESS)
Mon Apr 24 05:20:52 2023:type=update:id=10.x.x.x@pts/1:user=scripten:cmd=terminal length 0 (SUCCESS)
Mon Apr 24 05:20:53 2023:type=update:id=10.x.x.x@pts/2:user=SRVC_A006AC_0004_PRD:cmd=terminal session-timeout 60 (SUCCESS)
Mon Apr 24 05:20:53 2023:type=update:id=10.x.x.x@pts/2:user=SRVC_A006AC_0004_PRD:cmd=terminal length 0 (SUCCESS)
Mon Apr 24 05:21:05 2023:type=stop:id=10.x.x.x@pts/1:user=scripten:cmd=shell terminated because the ssh session closed
Mon Apr 24 05:25:49 2023:type=stop:id=10.x.x.x@pts/2:user=SRVC_A006AC_0004_PRD:cmd=shell terminated because the ssh session closed

Cause

上述调查结果表明，该问题是由 Cisco 问题 CSCwe09965 引起的，https://bst.cisco.com/bugsearch/bug/CSCwe09965本超链接将引导您访问非 Dell Technologies 运营的网站。 （需要登录 Cisco 才能查看文章）

症状：
MDS 9148S 交换机由于内核死机而重新加载。显示的原因 show system reset-reason 命令为：原因：内核崩溃
进一步的问题说明：
此问题的触发因素未知。内核崩溃会导致系统重新加载，并在重新加载期间中断流量。
条件：
此问题适用于任何 MDS 平台。

Resolution

解决方法：
避免在关闭会话的同时设置终端宽度或长度。

不要同时配置终端宽度和终端长度，然后关闭会话，或避免使用任何不断设置终端宽度和长度的脚本。

分辨率：
此问题已在 8.4（2f）、9.3.1 和 9.4.x 版本中得到解决。

Affected Products

Connectrix MDS-9148S
Article Properties
Article Number: 000212786
Article Type: Solution
Last Modified: 28 May 2025
Version:  4
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