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[Xen-bugs] [Bug 1287] New: Sometimes XenU guest cannot boot up on 32e ho

To: xen-bugs@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-bugs] [Bug 1287] New: Sometimes XenU guest cannot boot up on 32e host.
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Fri, 4 Jul 2008 00:21:00 -0700
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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1287

           Summary: Sometimes XenU guest cannot boot up on 32e host.
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: haicheng.li@xxxxxxxxx


Environment:
------------
Service OS (ia32/ia32e/IA64): ia32e
Guest OS (ia32/ia32e/IA64): ia32e
Change Set: 17952
Hardware: Stoakley/Clovertown



Bug detailed description:
--------------------------
On 32e host, sometimes XenU guest hangs at booting, and call trace is got from
serial port.

Reproduce steps:
----------------
This issue can not be reproduced steadily, just happens sometimes.

Basic root-causing log:
----------------------
Timer ISR/0: Time went backwards: delta=-67496451 delta_cpu=22503549
shadow=457677
 0: 4602024912447
 1: 4602014912447
 2: 4601494912447
 3: 4602054912447
 4: 4599930819175
 5: 4599810819175
 6: 4602110819175
 7: 4601950819175
rootprintk: 356 messages suppressed.
Timer ISR/0: Time went backwards: delta=-73077656 delta_cpu=56922344
shadow=457677
 0: 4606984912447
 1: 4606984912447
 2: 4606464912447
 3: 4607024912447
 4: 4601160819175
 5: 4601130819175
 6: 4607110819175
 7: 4606790819175
printk: 428 messages suppressed.
Timer ISR/3: Time went backwards: delta=-35049547 delta_cpu=54950453
shadow=457677
 0: 4612004912447
 1: 4611434912447
 2: 4611564912447
 3: 4612024912447
 4: 4602560819175
 5: 4603300819175
 6: 4612110819175
 7: 4612010819175
printk: 377 messages suppressed.
Timer ISR/3: Time went backwards: delta=-35049533 delta_cpu=54950467
shadow=457677
 0: 4617024912447
 1: 4611434912447
 2: 4616664912447
 3: 4617024912447
 4: 4602560819175
 5: 4605560819175
 6: 4617110819175
 7: 4616980819175
BUG: soft lockup detected on CPU#4!

Call Trace:
 <IRQ> [<ffffffff802588c0>] softlockup_tick+0xd8/0xea
 [<ffffffff8020ef06>] timer_interrupt+0x3a0/0x3fa
 [<ffffffff80258bac>] handle_IRQ_event+0x4e/0x96
 [<ffffffff80258c98>] __do_IRQ+0xa4/0x105
 [<ffffffff8020b23c>] call_softirq+0x1c/0x28
 [<ffffffff8020d019>] do_IRQ+0x65/0x73
 [<ffffffff8034de22>] evtchn_do_upcall+0x13b/0x1fb
 [<ffffffff8020ad72>] do_hypervisor_callback+0x1e/0x2c
 <EOI> [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000
 [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000
 [<ffffffff802408ef>] rcu_pending+0x26/0x50
 [<ffffffff8020e422>] raw_safe_halt+0xb8/0xdd
 [<ffffffff8020984d>] xen_idle+0x6d/0x80
 [<ffffffff80209024>] cpu_idle+0xab/0xce


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