[Xen-bugs] [Bug 1729] New: xl does not check the memory size of guest

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1729

           Summary: xl does not check the memory size of guest
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Tools
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: shaohui.zheng@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32e
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows):Linux
Change Set: 22812:73b3debb90cf
Hardware: Westmere-ep and Sandybridge
Other:


Bug detailed description:
--------------------------
For the xen-unstable(cs 22812). We create the guest with the more memory than
the host,xl did not check it and cause some error.There were some log as
following:

(XEN) memory.c:133:d0 Could not allocate order=0 extent: id=0 memflags=0 (0 of
5                                                                              
                  12)
(XEN) memory.c:133:d0 Could not allocate order=0 extent: id=0 memflags=0 (0 of
5                                                                              
                  12)
(XEN) memory.c:133:d0 Could not allocate order=0 extent: id=0 memflags=0 (0 of
5                                                                              
                  12)


Reproduce steps:
----------------
1.prepare a config file with the  more memory than the host.

Get the host maximum memory size with command "xl info | grep mem",
and set a larger size in configure file.


2.create the guest by the config file

3.xl did not check the guest memory size, and try to allocate memory for the
guest, then all availabe memory will be allocated, and system will in in a
abnormal status.

Current result:
----------------


Expected result:
----------------


Basic root-causing log:
----------------------


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