[Xen-bugs] [Bug 1713] New: memory corruption was reported by "xl" with device pass-throu

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1713

           Summary: memory corruption was reported by "xl" with device pass-
                    throu
           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): 
Change Set: 22764:75b6287626ee
Hardware: 
Other:
pvops dom0: 862ef97190f6b54d35c76c93fb2b8fadd7ab7d68
ioemu : 1c304816043c0ffe14d20d6006d6165cb7fddb9b

Bug detailed description:
--------------------------

Create a HVM guest with any devices pass-throu statically, PCIE NIC or VF.
After We execute comand "xl cr hvm.conf" , xl complains that memory corruption
was detected. If there is no device pass-throu, this warning information will
not appear.

The similar issue also exists when we attach a device dynamically, but it does
not affect the pass-throu feature, Guest OS can use the pass-throu device even
through it complains memory corruption, it is just a warning information. 

It might imply some hide issues, so we report it as a P2 bug.


Reproduce steps:
----------------
1. Hide device in HVM config file
pci = [ '05:01.0' ]
2. Create HVM guest with xl command
xl create hvm.conf

You will see this warning information

Current result:
----------------
Warining information for xl create command:
*** glibc detected *** xl: malloc(): memory corruption: 0x000000000162c900 ***

Warining information for xl pci-attach command:
[root@vt-nhm7 ~]# xl pci-attach 2 05:10.1
*** glibc detected *** xl: corrupted double-linked list: 0x0000000001e667d0 ***

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


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


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