[Xen-bugs] [Bug 1512] New: kernel/irq/manage.c:273 __enable_irq+0x6b/0xd4() every time ENTER is hit on the PV console

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1512

           Summary: kernel/irq/manage.c:273 __enable_irq+0x6b/0xd4() every
                    time ENTER is hit on the PV console
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Linux-pv_ops dom0
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: konrad.wilk@xxxxxxxxxx


I am using an Virtual Iron console daemon. It works similarly to 'xm console'
except that it can send (and receive) the output/input via UDP. 

This might the fault of the console daemon doing something unorthodox, or it
might be exactly what the kernel says.

 2726.912429] Pid: 12599, comm: console Tainted: G        W 
2.6.31-xen0-01416-ge02d501 #1
[ 2726.912605] Call Trace:
[ 2726.912651]  [<ffffffff81109ba6>] ? __enable_irq+0x6b/0xd4
[ 2726.912651]  [<ffffffff81085e12>] warn_slowpath_common+0xc9/0x10c
[ 2726.912651]  [<ffffffff81085f2d>] warn_slowpath_fmt+0x8b/0xb2
[ 2726.912651]  [<ffffffff81010b1a>] ? xen_force_evtchn_callback+0x2e/0x52
[ 2726.912651]  [<ffffffff8106d34a>] ? should_resched+0x23/0x6d
[ 2726.912651]  [<ffffffff81109ba6>] __enable_irq+0x6b/0xd4
[ 2726.912651]  [<ffffffff8176429d>] ? _spin_lock_irqsave+0x3d/0x8d
[ 2726.912651]  [<ffffffff8110a13d>] enable_irq+0x68/0xa2
[ 2726.912651]  [<ffffffff813ee56c>] evtchn_write+0x10d/0x198
[ 2726.912651]  [<ffffffff8119645d>] ? rw_verify_area+0x140/0x183
[ 2726.912651]  [<ffffffff81196d8e>] vfs_write+0x107/0x19c
[ 2726.912651]  [<ffffffff81196f68>] sys_write+0x79/0xcf
[ 2726.912651]  [<ffffffff81019302>] system_call_fastpath+0x16/0x1b
[ 2726.912651] ---[ end trace 5a5d197966b56a5c ]---
[ 2726.918403] ------------[ cut here ]------------
[ 2726.918508] WARNING: at
/home/konrad/git/nex-VI-PVOPS/linux/kernel/irq/manage.c:273
__enable_irq+0x6b/0xd4()


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