From: Julien Grall <julien.grall@citrix.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"Tim (Xen.org)" <tim@xen.org>,
Sander Bogaert <sander.bogaert@elis.ugent.be>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Subject: Re: [PATCH v3 04/13] xen/arm: support for guest SGI
Date: Fri, 26 Apr 2013 14:35:52 +0100 [thread overview]
Message-ID: <517A82B8.4000305@citrix.com> (raw)
In-Reply-To: <1366982643.3142.96.camel@zakaz.uk.xensource.com>
On 04/26/2013 02:24 PM, Ian Campbell wrote:
> On Fri, 2013-04-26 at 13:12 +0100, Sander Bogaert wrote:
>> I've been running crashme ( executing random instructions ) on Xen on
>> Arm installed on an Arndale board. I'm using Julien's dom0 and Xen
>> branch. The Xen branch wasn't updated in a few days.
>>
>> I managed to crash Xen from dom0 userspace:
>> (XEN)
>> (XEN) ****************************************
>> (XEN) Panic on CPU 1:
>> (XEN) Unhandled SGI 2 on CPU1
>> (XEN) ****************************************
>> (XEN)
>> (XEN) Reboot in five seconds...
>>
>> Tracking this back to the source:
>> xen/arch/arm/gic.c:648 static void do_sgi
>> xen/arch/arm/gic.c:671 void gic_interrupt
>>
>> From what I understood from the source all sgi's except 0 & 1
>> would/will cause this panic since they are just not handled.
>
> Do you know how the SGI was triggered, because if guest/dom0 userspace
> can trigger an arbitrary SGI then we have big problems!
>
> Julien, does your tree have anything in it which might explain this?
This SGI should only be triggered to call a function on another CPU. But
it seems his xen tree doesn't have the patch applied. So nobody should
call this SGI.
--
Julien
next prev parent reply other threads:[~2013-04-26 13:35 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-24 19:06 [PATCH v3 0/13] xen/arm: guest SMP support Stefano Stabellini
2013-04-24 19:07 ` [PATCH v3 01/13] xen/arm: basic PSCI support, implement cpu_on and cpu_off Stefano Stabellini
2013-04-25 9:53 ` Ian Campbell
2013-04-25 10:57 ` Stefano Stabellini
2013-04-25 11:31 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 02/13] xen/arm: allocate secondaries dom0 vcpus Stefano Stabellini
2013-04-25 10:08 ` Ian Campbell
2013-04-26 13:23 ` Stefano Stabellini
2013-04-26 13:25 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 03/13] xen: introduce cpumask_from_bitmap Stefano Stabellini
2013-04-25 9:24 ` Jan Beulich
2013-04-25 10:01 ` Ian Campbell
2013-04-25 14:26 ` Keir Fraser
2013-04-25 14:42 ` Ian Campbell
2013-04-25 14:44 ` Ian Campbell
2013-04-25 14:51 ` Ian Campbell
2013-04-25 15:13 ` Keir Fraser
2013-04-25 15:23 ` Ian Campbell
2013-04-25 17:20 ` Keir Fraser
2013-04-25 15:08 ` Stefano Stabellini
2013-04-25 15:17 ` Keir Fraser
2013-04-25 15:18 ` Jan Beulich
2013-04-25 15:17 ` Jan Beulich
2013-04-25 10:01 ` Stefano Stabellini
2013-04-25 10:08 ` Jan Beulich
2013-04-25 10:35 ` Stefano Stabellini
2013-04-25 10:49 ` Jan Beulich
2013-04-25 11:38 ` Stefano Stabellini
2013-04-25 12:49 ` Jan Beulich
2013-04-25 14:27 ` Keir Fraser
2013-04-24 19:07 ` [PATCH v3 04/13] xen/arm: support for guest SGI Stefano Stabellini
2013-04-25 10:16 ` Ian Campbell
2013-04-25 19:03 ` Julien Grall
2013-04-26 9:05 ` Ian Campbell
2013-04-26 11:46 ` Julien Grall
2013-04-26 12:12 ` Sander Bogaert
2013-04-26 13:07 ` Stefano Stabellini
2013-04-26 13:24 ` Ian Campbell
2013-04-26 13:35 ` Julien Grall [this message]
2013-04-26 13:56 ` Sander Bogaert
2013-04-26 14:10 ` Ian Campbell
2013-04-26 13:28 ` Julien Grall
2013-04-24 19:07 ` [PATCH v3 05/13] xen/arm: early_ioremap: allocate virtual addresses from top to bottom Stefano Stabellini
2013-04-25 10:27 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 06/13] xen/arm: implement arch_vmap_virt_end Stefano Stabellini
2013-04-25 10:29 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 07/13] xen/arm: compile and initialize vmap Stefano Stabellini
2013-04-25 10:41 ` Ian Campbell
2013-04-25 17:04 ` Stefano Stabellini
2013-04-26 9:00 ` Ian Campbell
2013-04-26 12:02 ` Stefano Stabellini
2013-04-26 13:21 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 08/13] xen/arm: implement map_domain_page_global and unmap_domain_page_global Stefano Stabellini
2013-04-25 10:43 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 09/13] xen: move VCPUOP_register_vcpu_info to common code Stefano Stabellini
2013-04-25 10:45 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 10/13] xen/arm: support VCPUOP_register_vcpu_info Stefano Stabellini
2013-04-25 10:50 ` Ian Campbell
2013-04-25 11:38 ` Stefano Stabellini
2013-04-25 11:40 ` Ian Campbell
2013-04-25 11:41 ` Stefano Stabellini
2013-04-25 14:29 ` Keir Fraser
2013-04-25 14:39 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 11/13] xen/arm: send IPIs to inject irqs into guest vcpus running on different pcpus Stefano Stabellini
2013-04-25 11:00 ` Ian Campbell
2013-04-26 13:39 ` Stefano Stabellini
2013-04-26 14:08 ` Ian Campbell
2013-04-24 19:07 ` [PATCH v3 12/13] xen/arm: start the vtimer Xen timers on the processor they should be running on Stefano Stabellini
2013-04-25 11:03 ` Ian Campbell
2013-04-26 14:30 ` Stefano Stabellini
2013-04-26 14:35 ` Ian Campbell
2013-04-26 14:36 ` Stefano Stabellini
2013-04-24 19:07 ` [PATCH v3 13/13] xen/arm: initialize virt_timer and phys_timer with the same values on all vcpus Stefano Stabellini
2013-04-25 11:21 ` Ian Campbell
2013-04-26 14:30 ` Stefano Stabellini
2013-04-26 14:37 ` Ian Campbell
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