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Re: [Xen-devel] [PATCH] xen: fix hypervisor crash with xentrace

To: Christoph Egger <Christoph.Egger@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>

From: Keir Fraser <keir.xen@xxxxxxxxx>

Date: Wed, 06 Apr 2011 15:54:12 +0100

Cc:

Delivery-date: Wed, 06 Apr 2011 07:55:05 -0700

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List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Thread-index: Acv0an2I2wFuxWDVY0G4J5Ncj4O7Ag==

Thread-topic: [Xen-devel] [PATCH] xen: fix hypervisor crash with xentrace

On 06/04/2011 15:32, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote: > > Hi, > > Attached patch fixes hypervisor crashes when xentrace buffer gets initialized. Should be fixed by c/s 23173. Thanks! -- Keir > The xen backtraces I have seen are: > > (XEN) Xen call trace: > (XEN) [<ffff82c48025cf70>] early_stack+0x0/0x48 > (XEN) [<ffff82c4801278d0>] tb_control+0x182/0x278 > (XEN) [<ffff82c480124aac>] do_sysctl+0x1fc/0xa40 > (XEN) [<ffff82c480213248>] syscall_enter+0xc8/0x122 > (XEN) > (XEN) Pagetable walk from ffff82c48025cf70: > (XEN) L4[0x105] = 00000000cfcaa027 5555555555555555 > (XEN) L3[0x112] = 00000000cfcab027 5555555555555555 > (XEN) L2[0x001] = 000000022f27b063 5555555555555555 > (XEN) L1[0x05c] = 00000000cfc5c262 5555555555555555 > (XEN) > (XEN) **************************************** > (XEN) Panic on CPU 0: > (XEN) FATAL PAGE FAULT > (XEN) [error_code=0010] > (XEN) Faulting linear address: ffff82c48025cf70 > (XEN) **************************************** > > > (XEN) Xen call trace: > (XEN) [<ffff82c48025d852>] notifier_chain_register+0x0/0x35 > (XEN) [<ffff82c4801275b2>] alloc_trace_bufs+0x5cd/0x7a9 > (XEN) [<ffff82c480127910>] tb_control+0x182/0x278 > (XEN) [<ffff82c480124aec>] do_sysctl+0x1fc/0xa40 > (XEN) [<ffff82c480213288>] syscall_enter+0xc8/0x122 > (XEN) > (XEN) Pagetable walk from ffff82c48025d852: > (XEN) L4[0x105] = 00000000cfcaa027 5555555555555555 > (XEN) L3[0x112] = 00000000cfcab027 5555555555555555 > (XEN) L2[0x001] = 000000022f27b063 5555555555555555 > (XEN) L1[0x05d] = 00000000cfc5d262 5555555555555555 > (XEN) > (XEN) **************************************** > (XEN) Panic on CPU 1: > (XEN) FATAL PAGE FAULT > (XEN) [error_code=0010] > (XEN) Faulting linear address: ffff82c48025d852 > (XEN) **************************************** > > > Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx> > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

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