[Xen-devel] xen-unstable: Xen BUG at sched_credit.c:925

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

I'm seeing this BUG/crash when shutting down a domain.
I've only seen it when running a domain with tmem, though
I'm not clear on what the relationship would be.

I haven't tested tmem with xen-unstable for a couple of
months now and I see five patches to sched_credit.c
since Aug 25... should I just try backing those out,
or any other ideas on what might be going on?  The
code around the BUG is not very intuitive to me
and it looks like that chunk of code hasn't been
changed for years.

Thanks,
Dan

(XEN)    0000000000000002 ffff82c48025f080 ffff82c4802e7f00 ffff82c48011da20
(XEN)    ffff82c48025fa00 ffff82c4802e7f28 ffff82c48025fa00 ffff83005c2aa000
(XEN)    ffff82c4802e7f20 ffff82c48014a4c3 0000000000000000 ffff83007d2d0000
(XEN)    ffff82c4802e7db8 0000000000000000 0000000000000000 0000000000000000
(XEN)    0000000000000000 00000000c05f0ffc 00000000deadbeef 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
(XEN)    00000000deadbeef 0000000000000000 0000000000000001 0000000000000000
(XEN)    0000010000000000 00000000c04013a7 0000000000000061 0000000000000246
(XEN)    00000000c06a0fc0 0000000000000069 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 ffff83007d2d0000
(XEN) Xen call trace:
(XEN)    [<ffff82c4801175e6>] csched_acct+0x25a/0x3e7
(XEN)    [<ffff82c48011f9fa>] execute_timer+0x2e/0x4c
(XEN)    [<ffff82c48011fbd2>] timer_softirq_action+0x1ba/0x328
(XEN)    [<ffff82c48011da20>] do_softirq+0x6a/0x77
(XEN)    [<ffff82c48014a4c3>] idle_loop+0x7a/0x7c
(XEN)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Xen BUG at sched_credit.c:925
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...

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