Re: [Xen-devel] [xen-4.7-testing test] 105948: regressions - FAIL

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 21/02/2017 23:45, osstest service owner wrote:
> flight 105948 xen-4.7-testing real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/105948/
>
> Regressions :-(
>
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>  test-amd64-amd64-xl-credit2  17 guest-localmigrate/x10   fail REGR. vs. 
> 105855

From
http://logs.test-lab.xenproject.org/osstest/logs/105948/test-amd64-amd64-xl-credit2/serial-nobling0.log
around Feb 21 20:32:01.481626

(XEN) csched2_vcpu_insert: Inserting d5v0
(XEN) csched2_vcpu_insert: Inserting d5v1
(XEN) csched2_vcpu_insert: Inserting d5v2
(XEN) csched2_vcpu_insert: Inserting d5v3
(XEN) Assertion 'd->cpupool != NULL' failed at
...5948.build-amd64/xen/xen/include/xen/sched-if.h:200
(XEN) ----[ Xen-4.7.2-pre  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    14
(XEN) RIP:    e008:[<ffff82d080126e70>]
sched_credit2.c#vcpu_is_migrateable+0x22/0x9a
(XEN) RFLAGS: 0000000000010046   CONTEXT: hypervisor
(XEN) rax: ffff8304573bc000   rbx: ffff83047f114f10   rcx: ffff83007baca000
(XEN) rdx: 0000000000000000   rsi: ffff83023fed0458   rdi: ffff83047f114f10
(XEN) rbp: ffff830473fffd60   rsp: ffff830473fffd40   r8:  0000000014a138bf
(XEN) r9:  0000000014a538bf   r10: 0000000000021e54   r11: 0f0f0f0f0f0f0f0f
(XEN) r12: ffff83047f114190   r13: 000000000000000e   r14: ffff82d0802e66c0
(XEN) r15: ffff83023fed0000   cr0: 0000000080050033   cr4: 00000000003526e4
(XEN) cr3: 0000000457499000   cr2: ffff880002810288
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: e008
(XEN) Xen code around <ffff82d080126e70>
(sched_credit2.c#vcpu_is_migrateable+0x22/0x9a):
(XEN)  8b 50 68 48 85 d2 75 02 <0f> 0b 49 89 f4 48 89 fb 48 8d 05 81 52
21 00 48
(XEN) Xen stack trace from rsp=ffff830473fffd40:
(XEN)    0000000000000006 ffff83047f114f10 ffff83047f114190 ffff83023fed0498
(XEN)    ffff830473fffe20 ffff82d080129763 ffff830473fffde0 ffff82d0802e66c0
(XEN)    ffff83023fed0000 ffff83023fed0000 ffff83040000000e ffff83040000000e
(XEN)    000000070000000e 000000528d5c4e92 ffff830473fffdc8 ffff830473fffe68
(XEN)    ffff82d080130110 0000000002a5a4fa 0000000000000000 0000000000000000
(XEN)    ffff83023fed0960 ffff83023fed0458 0000000000000002 ffff8300679fc000
(XEN)    ffff82d08033c140 000000528d5c4e92 ffff83023fed0964 000000000000000e
(XEN)    ffff830473fffeb0 ffff82d08012c17e a6671e8700000002 ffff83023ff70160
(XEN)    0000000e00fffe60 ffff83023ff70140 ffff830473fffe60 ffff82d0801301a1
(XEN)    ffff830473fffeb0 ffff82d0801330ad ffff830473fffef0 ffff82d0801bb4a2
(XEN)    00000010679fc000 ffff82d080313180 ffff82d080312a80 ffffffffffffffff
(XEN)    ffff830473ffffff ffff8304677f2000 ffff830473fffee0 ffff82d08012f8bd
(XEN)    ffff830473ffffff ffff83007bad0000 00000000ffffffff ffff83023fec2000
(XEN)    ffff830473fffef0 ffff82d08012f912 ffff830473ffff10 ffff82d080164b17
(XEN)    ffff82d08012f912 ffff8300679fc000 ffff830473fffdd8 0000000000000000
(XEN)    ffffffff81c01fd8 ffffffff81c01fd8 0000000000000000 ffffffff81c01e68
(XEN)    ffffffffffffffff 0000000000000246 000000528d4bace3 0000000000000000
(XEN)    0000000000000000 0000000000000000 ffffffff810013aa ffffffff81c319a0
(XEN)    00000000deadbeef 00000000deadbeef 0000010000000000 ffffffff810013aa
(XEN)    000000000000e033 0000000000000246 ffffffff81c01e50 000000000000e02b
(XEN) Xen call trace:
(XEN)    [<ffff82d080126e70>] sched_credit2.c#vcpu_is_migrateable+0x22/0x9a
(XEN)    [<ffff82d080129763>] sched_credit2.c#csched2_schedule+0x823/0xb4e
(XEN)    [<ffff82d08012c17e>] schedule.c#schedule+0x108/0x609
(XEN)    [<ffff82d08012f8bd>] softirq.c#__do_softirq+0x7f/0x8a
(XEN)    [<ffff82d08012f912>] do_softirq+0x13/0x15
(XEN)    [<ffff82d080164b17>] domain.c#idle_loop+0x55/0x62
(XEN)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 14:
(XEN) Assertion 'd->cpupool != NULL' failed at
...5948.build-amd64/xen/xen/include/xen/sched-if.h:200
(XEN) ****************************************
(XEN)
(XEN) Manual reset required ('noreboot' specified)

I am guessing the most recent credit2 backports weren't quite so safe?

~Andrew

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