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Re: [Xen-devel] [PATCH 00/60] xen: add core scheduling support
- To: Dario Faggioli <dfaggioli@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Juergen Gross <JGross@xxxxxxxx>
- From: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
- Date: Mon, 15 Jul 2019 15:08:44 +0100
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- Cc: "sergey.dyasli@xxxxxxxxxx >> Sergey Dyasli" <sergey.dyasli@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, RobertVanVossen <robert.vanvossen@xxxxxxxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, Julien Grall <julien.grall@xxxxxxx>, Josh Whitehead <josh.whitehead@xxxxxxxxxxxxxxx>, Meng Xu <mengxu@xxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Mon, 15 Jul 2019 14:08:59 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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On 05/07/2019 14:56, Dario Faggioli wrote:
> On Fri, 2019-07-05 at 14:17 +0100, Sergey Dyasli wrote:
>> 1) This crash is quite likely to happen:
>>
>> [2019-07-04 18:22:46 UTC] (XEN) [ 3425.220660] Watchdog timer detects
>> that CPU2 is stuck!
>> [2019-07-04 18:22:46 UTC] (XEN) [ 3425.226293] ----[ Xen-4.13.0-
>> 8.0.6-d x86_64 debug=y Not tainted ]----
>> [...]
>> [2019-07-04 18:22:47 UTC] (XEN) [ 3425.501989] Xen call trace:
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.505278] [<ffff82d08023d578>] vcpu_sleep_sync+0x50/0x71
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.511518] [<ffff82d080208370>] vcpu_pause+0x21/0x23
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.517326] [<ffff82d08023e25d>]
>> vcpu_set_periodic_timer+0x27/0x73
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.524258] [<ffff82d080209682>] do_vcpu_op+0x2c9/0x668
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.530238] [<ffff82d08024f970>] compat_vcpu_op+0x250/0x390
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.536566] [<ffff82d080383964>] pv_hypercall+0x364/0x564
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.542719] [<ffff82d080385644>] do_entry_int82+0x26/0x2d
>> [2019-07-04 18:22:47 UTC] (XEN) [
>> 3425.548876] [<ffff82d08038839b>] entry_int82+0xbb/0xc0
>>
> Mmm... vcpu_set_periodic_timer?
>
> What kernel is this and when does this crash happen?
Hi Dario,
I can easily reproduce this crash using a Debian 7 PV VM (2 vCPUs, 2GB RAM)
which has the following kernel:
# uname -a
Linux localhost 3.2.0-4-amd64 #1 SMP Debian 3.2.78-1 x86_64 GNU/Linux
All I need to do is suspend and resume the VM.
Thanks,
Sergey
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