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Aditya Advani
Asked: 2009-08-08 01:58:48 +0800 CST

内核错误的解释 - Eeeek！page_mapcount 变为负数

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互联网说这是一个真正的内核错误，但有人知道是什么触发了它吗？

服务器运行 CentOS x86_64 内核 2.6.27.24

这是我的崩溃输出：

[root@u15345757 httpdocs]#
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.506380] Eeek! page_mapcount(page) went negative! (-1)
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.517515] page pfn = d0a3
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.523814] page->flags = 10000000000083c
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.532489] page->count = 2
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.538741] page->mapping = ffff88001f01a110
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.547924] vma->vm_ops = 0x0
Message from syslogd@ at Thu Aug 6 01:42:22 2009 ...
u15345757 kernel: [1145736.554543] [ cut here ]
Message from syslogd@ at Thu Aug 6 01:42:23 2009 ...
u15345757 kernel: [1145736.564528] invalid opcode: 0000 [1] SMP
Message from syslogd@ at Thu Aug 6 01:42:23 2009 ...
u15345757 kernel: [1145736.564528] Code: 80 e8 22 51 fd ff 48 8b 85 90 00 00 00 48 85 c0 74 19 48 8b 40 20 48 85 c0 74 10 48 8b 70 58 48 c7 c7 10 7f 7d 80 e8 fd 50 fd ff <0f> 0b eb fe 8b 77 18 41 58 5b 5d 83 e6 01 f7 de 83 c6 04 e9 df
Broadcast message from root (pts/3) (Thu Aug 6 01:49:29 2009):

The system is going down for reboot NOW!
linux centos server-crashes

2 个回答

  1. 这不是 CentOS 的标准内核，这意味着它可以是任意数量的问题。如果你真的需要为 CentOS 运行这个特定的、非标准的内核，我建议你遵循这个指南

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  2. 首先要做的是运行 memcheck 以丢弃失败的内存。否则它可能是一个宇宙位翻转，或者一个真正的内核错误。

    然后，这取决于您当时的工作流程（是否需要 CPU 资源？FS 资源不足？等）某些工作流程更有可能触发错误的 RAM。

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