From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Mason Subject: Re: Bug in timer interrupt crashed dom0 Date: Tue, 13 Sep 2005 15:34:05 -0500 Message-ID: <20050913203405.GA4910@us.ibm.com> References: <59D45D057E9702469E5775CBB56411F15FC7DA@pdsmsx406> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <59D45D057E9702469E5775CBB56411F15FC7DA@pdsmsx406> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Li, Xin B" Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org I was seeing nearly the same error on my dual opteron system running Last Tuesday's build (09/06). My only change to Xen was a slight change (addition of some printks) to swiotlb.c. Monday's build (09/12), which includes Xin's patch, does not reproduce the problem. Great job. Thanks, Jon On Sat, Sep 10, 2005 at 01:10:59PM +0800, Li, Xin B wrote: > Hi Keir, I encountered a timer interrupt issue while running VMX guest, > this causes xen0 crash as following: > > Timer ISR/6: Time went backwards: delta=-2277754 cpu_delta=42704729 > shadow=597009701164 off=793003739 processed=597804982483 > cpu_processed=597760000000 > 0: 597794982483 > 1: 596930000000 > 2: 597790000000 > 3: 597800000000 > 4: 597800000000 > 5: 596920000000 > 6: 597760000000 > 7: 597800000000 > Unable to handle kernel paging request at virtual address 327d2332 > printing eip: > c010c2e2 > *pde = ma 00000000 pa 55555000 > Oops: 0002 [#1] > PREEMPT SMP > Modules linked in: video thermal processor fan button battery ac > CPU: 6 > EIP: 0061:[] Not tainted VLI > EFLAGS: 00010203 (2.6.12-xen0) > EIP is at timer_interrupt+0x162/0x2c0 > eax: 327d2332 ebx: 00000008 ecx: 00000000 edx: 00010000 > esi: c05cb3c0 edi: 01f308d9 ebp: 00000000 esp: c00cde6c > ds: 007b es: 007b ss: 0069 > Process swapper (pid: 0, threadinfo=c00cc000 task=c00b7a40) > Stack: c05d9ae0 00000008 2fa81a00 0000008b 028b9f59 00000000 008d192c > 0000008b > 2f4446db 00000000 2ff420d3 0000008b 2d45c000 0000008b 2f4446db > 00000000 > c1436320 c05cb3c0 000000a8 c05cb3c0 ffdd3e86 ffffffff c00fad00 > 00000117 > Call Trace: > [] handle_IRQ_event+0x84/0xe0 > [] __do_IRQ+0xdc/0x140 > [] do_IRQ+0x1d/0x30 > [] evtchn_do_upcall+0x90/0x100 > [] hypervisor_callback+0x2c/0x34 > [] xen_idle+0x51/0xc0 > [] cpu_idle+0x57/0x70 > [] preempt_schedule+0x4d/0x70 > Code: c0 e8 13 42 35 00 85 ed 7c 69 7e 7b be c0 b3 5c c0 90 8d b4 26 00 > 00 00 00 8b 04 9d 20 f0 5c c0 81 c7 80 69 67 ff 83 d5 ff 01 f0 <81> 00 > 80 96 98 00 83 50 04 00 31 c0 8b 54 24 74 f6 42 32 02 75 > <0>Kernel panic - not syncing: Fatal exception in interrupt > stop_this_cpu disable_local_APIC > stop_this_cpu disable_local_APIC > stop_this_cpu disable_local_APIC > stop_this_cpu disable_local_APIC > Timer ISR/1: Time went backwards: delta=-1313332 cpu_delta=873669151 > shadow=597009338050 off=794331480 processed=597804982483 > cpu_processed=596930000000 > 0: 597794982483 > 1: 596930000000 > 2: 597790000000 > 3: 597800000000 > Timer ISR/5: Time went backwards: delta=-1329261 cpu_delta=883653222 > shadow=597009051468 off=794601976 processed=597804982483 > cpu_processed=596920000000 > 0: 597794982483 > 1: 596930000000 > 2: 597790000000 > 3: 597800000000 > Timer ISR/2: Time went backwards: delta=-1314723 cpu_delta=13667760 > shadow=597008910970 off=794756988 processed=597804982483 > cpu_processed=597790000000 > 0: 597794982483 > 1: 596930000000 > 2: 597790000000 > 3: 597800000000 > stop_this_cpu disable_local_APIC > stop_this_cpu disable_local_APIC > stop_this_cpu disable_local_APIC > smp_send_stop disable_local_APIC > (XEN) Domain 0 shutdown: rebooting machine. > > -Xin > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >