Re: [Xen-devel] Re: [xen-unstable test] 6289: regressions - FAIL

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 03/03/2011 10:56, "George Dunlap" <George.Dunlap@xxxxxxxxxxxxx> wrote:

> Hmm, what's our policy on adding debugging patches this late in the cycle?
> 
> The addition of a one-line BUG_ON() in another place in the code might
> help next time this happens; printing out more information when this
> happens would be nice as well.

Since credit2 is non-default and nor considered production ready, it would
certainly be okay in this case imo. Credit2 readiness is not going to be a
4.1 blocker.

 -- Keir

>  -George
> 
> On Wed, Mar 2, 2011 at 5:13 PM, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> wrote:
>> Ian Jackson writes ("[xen-unstable test] 6289: regressions - FAIL"):
>>> test-amd64-xcpkern-i386-xl-credit2 10 guest-saverestore  fail REGR. vs. 6288
>> 
>> Xen crash in credit2 code.
>> 
>> Ian.
>> 
>> Mar  2 15:35:31.195760 (XEN) csched_vcpu_insert: Inserting d2v3
>> Mar  2 15:35:31.195786 (XEN) Xen BUG at sched_credit2.c:1606
>> Mar  2 15:35:38.766789 (XEN) ----[ Xen-4.1.0-rc7-pre  x86_64  debug=y  Not
>> tainted ]----
>> Mar  2 15:35:38.766829 (XEN) CPU:    8
>> Mar  2 15:35:38.778761 (XEN) RIP:    e008:[<ffff82c48011b86a>]
>> csched_schedule+0x151/0xac9
>> Mar  2 15:35:38.778794 (XEN) RFLAGS: 0000000000010007   CONTEXT: hypervisor
>> Mar  2 15:35:38.790766 (XEN) rax: ffff830226f12000   rbx: ffff830226e03e30  
>> rcx: 0000000000000000
>> Mar  2 15:35:38.790801 (XEN) rdx: ffff8301a7fe0010   rsi: ffff82c480249780  
>> rdi: ffff8300d7ad2000
>> Mar  2 15:35:38.802790 (XEN) rbp: ffff8301a7e9fe38   rsp: ffff8301a7e9fd28  
>> r8:  0000000000000001
>> Mar  2 15:35:38.814768 (XEN) r9:  0000000000000005   r10: ffff8300d7ad2030  
>> r11: 00000055197f6700
>> Mar  2 15:35:38.814809 (XEN) r12: ffff8301a7fe02d0   r13: 0000000000000000  
>> r14: ffff8301a7ea4060
>> Mar  2 15:35:38.822777 (XEN) r15: 0000000000000008   cr0: 000000008005003b  
>> cr4: 00000000000006f4
>> Mar  2 15:35:38.831784 (XEN) cr3: 00000001a7e12000   cr2: 00000000b78891cd
>> Mar  2 15:35:38.831815 (XEN) ds: 007b   es: 007b   fs: 00d8   gs: 0000   ss:
>> 0000   cs: e008
>> Mar  2 15:35:38.846770 (XEN) Xen stack trace from rsp=ffff8301a7e9fd28:
>> Mar  2 15:35:38.846799 (XEN)    ffffffff00000206 ffff8301a7fe0010
>> ffff8301a7fe0238 ffff8301a7fe02d4
>> Mar  2 15:35:38.855776 (XEN)    0000005518e697c4 ffff82c480249780
>> ffff8301a7e9fe68 0000000000000001
>> Mar  2 15:35:38.863764 (XEN)    ffff8301a7e9fdc8 ffff82c480122b07
>> ffff8301a7e9fdc8 ffff82c4802d3ec0
>> Mar  2 15:35:38.863800 (XEN)    ffff82c4802d3ec0 ffff8300d7ad2000
>> 0000000000000246 ffff8301a7fe02d4
>> Mar  2 15:35:38.875776 (XEN)    ffff82c4802d3ec0 ffff8301a7fe0010
>> ffff82c4802c27c0 ffff8300d7ad2000
>> Mar  2 15:35:38.887766 (XEN)    ffff8301a7e9fdf8 ffff82c480122f89
>> ffff8301a7ea4060 ffff8301a7e9fdf8
>> Mar  2 15:35:38.887801 (XEN)    ffff82c480125eed 0000000000000008
>> ffff8301a7e9fe38 0000000000000082
>> Mar  2 15:35:38.902777 (XEN)    0000000000000082 0000000000000000
>> ffff8300d7ad2000 ffff82c480249780
>> Mar  2 15:35:38.907768 (XEN)    ffff8301a7ea4060 ffff8301a7ea4040
>> ffff8301a7e9feb8 ffff82c480121fd2
>> Mar  2 15:35:38.907809 (XEN)    ffff8301a7e9fec0 0000005518e697c4
>> 0000000000000000 00000000c04520a0
>> Mar  2 15:35:38.922781 (XEN)    ffff830226f12000 0000000000000006
>> ffff8301a7e9fef8 ffff82c4801380a8
>> Mar  2 15:35:38.934774 (XEN)    0000000000000000 0000000000000008
>> 0000000000000008 ffff82c4802b0880
>> Mar  2 15:35:38.934809 (XEN)    ffff8301a7e9ff18 ffffffffffffffff
>> ffff8301a7e9fef8 ffff82c480123627
>> Mar  2 15:35:38.943781 (XEN)    0000000000000000 ffff8300d7ad2000
>> 0000000000000000 0000000000000000
>> Mar  2 15:35:38.954769 (XEN)    0000000000000000 0000000000000000
>> ffff8301a7e9ff08 ffff82c4801236a2
>> Mar  2 15:35:38.954808 (XEN)    00007cfe581600c7 ffff82c480211e86
>> 0000000000000000 0000000000000000
>> Mar  2 15:35:38.963789 (XEN)    0000000000000000 0000000000000000
>> 00000000c8061f40 00000000deadbeef
>> Mar  2 15:35:38.975779 (XEN)    0000000000000000 0000000000000000
>> 0000000000000000 0000000000000000
>> Mar  2 15:35:38.990772 (XEN)    0000000000000000 00000000deadbeef
>> 00000000deadbeef 0000000000000000
>> Mar  2 15:35:38.990814 (XEN)    00000000c04f3020 0000010000000000
>> 00000000c0101307 0000000000000061
>> Mar  2 15:35:38.995826 (XEN) Xen call trace:
>> Mar  2 15:35:38.995841 (XEN)    [<ffff82c48011b86a>]
>> csched_schedule+0x151/0xac9
>> Mar  2 15:35:39.007767 (XEN)    [<ffff82c480121fd2>] schedule+0x12a/0x624
>> Mar  2 15:35:39.007797 (XEN)    [<ffff82c480123627>] __do_softirq+0x88/0x99
>> Mar  2 15:35:39.022765 (XEN)    [<ffff82c4801236a2>] do_softirq+0x6a/0x7a
>> Mar  2 15:35:39.022795 (XEN)
>> Mar  2 15:35:39.022813 (XEN)
>> Mar  2 15:35:39.022824 (XEN) ****************************************
>> Mar  2 15:35:39.031765 (XEN) Panic on CPU 8:
>> Mar  2 15:35:39.031787 (XEN) Xen BUG at sched_credit2.c:1606
>> Mar  2 15:35:39.031811 (XEN) ****************************************
>> Mar  2 15:35:39.038756 (XEN)
>> Mar  2 15:35:39.038770 (XEN) Reboot in five seconds...
>> 
>> _______________________________________________
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>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel
>> 



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