[Xen-bugs] [Bug 35] New: dom0 e1000 network shutdown hangs until keyboard/network input

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http://bugzilla.xensource.com/cgi-bin/bugzilla/show_bug.cgi?id=35

           Summary: dom0 e1000 network shutdown hangs until keyboard/network
                    input
           Product: Xen
           Version: 2.0
          Platform: Other
               URL: http://lists.xensource.com/archives/html/xen-devel/2005-
                    05/msg00312.html
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hardware Support
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: rich@xxxxxxxxxxxxx


Original report by Peter Bier:

---
I encountered a problem with dom0 when rebooting and running an intel 
gigabit card using the pro/1000 driver. When the system tries to shut
down I get the following output of an strace command :

   .........
17:10:49.063616 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3 <0.000029>
17:10:49.063689 ioctl(3, 0x8913, 0xbffffc80) = 0 <0.000018>
17:10:49.063751 ioctl(3, 0x8914, 0xbffffc80) = 0 <535.114722>
17:19:44.178567 close(3)                = 0 <0.000026>
17:19:44.178679 exit_group(0)           = ?

observe the more than 500 seconds it takes for the second ioctl to complete !!
I have found out that any input on the console keyboard or network interface 
immediately causes the system call to return.

Is there a problem with interrupt delivery ?
---

I have experienced this problem intermittently on a 4P box and once on a
uniprocessor box, where keyboard input was required for shutdown to continue. 
Problem did not happen during manual network restart (not part of a full 
shutdown).



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