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xen-devel
Re: [Xen-devel] Dom0 panic on xen 3.4.3
On Fri, Aug 20, 2010 at 02:15:25PM -0400, Cris Daniluk wrote:
> I'm running Xen 3.4.3 final and observing the following kernel panic
> when I fire up the 9th domU. dom0 is CentOS 5.5 running a XenLinux
> kernel. grub.conf entry is below, followed by the dump. The kernel
> crash is immediately after the 9th domU is unpaused.
>
> title Xen 3.4.3 CentOS (2.6.18-194.11.1.el5xen)
> root (hd0,0)
> kernel /xen-3.4.3.gz dom0_mem=768M loglvl=all guest_loglvl=all
> com1=38400
> 0,8n1 console=com1 sync_console noreboot
> module /vmlinuz-2.6.18-194.11.1.el5xen ro
> root=/dev/vg_internal/lv_base
> console=hvc0,38400 norhgb netloop.nloopbacks=100
> module /mpp-2.6.18-194.11.1.el5xen.img
> title CentOS (2.6.18-194.11.1.el5) with MPP
> root (hd0,0)
>
so I assume this crash doesn't happen if you use the el5 default xen
hypervisor?
Have you tried using latest linux-2.6.18-xen (from xen.org) ?
-- Pasi
>
>
> Unable to handle kernel paging request at ffff88002e864000 RIP:
> [<ffffffff8041a95f>] skb_copy_bits+0x114/0x1d3
> PGD 11a5067 PUD 11a6067 PMD 131b067 PTE 0
> Oops: 0000 [1] SMP
> last sysfs file: /devices/xen-backend/vbd-2-51712/statistics/wr_sect
> CPU 2
> Modules linked in: xt_tcpudp xt_state ip_conntrack nfnetlink
> xt_physdev bridge nfs lockd fscache nfs_acl sunrpc iptable_filter
> ip_tables x_tables be2iscsi ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad
> ib_core ib_addr iscsi_tcp bnx2i cnic ipv6 xfrm_nalgo crypto_api uio
> cxgb3i cxgb3 8021q libiscsi_tcp libiscsi2 scsi_transport_iscsi2
> scsi_transport_iscsi dm_round_robin dm_multipath scsi_dh video
> backlight sbs power_meter hwmon i2c_ec dell_wmi wmi button battery
> asus_acpi ac blkbk netbk blktap pciback parport_pc lp parport joydev
> cdc_ether serial_core usbnet pcspkr bnx2 ide_cd i2c_i801 e1000e
> i2c_core cdrom dm_raid45 dm_message dm_region_hash dm_mem_cache
> dm_snapshot dm_zero dm_mirror dm_log dm_mod mppVhba(U) ata_piix libata
> shpchp megaraid_sas mppUpper(U) sg sd_mod scsi_mod ext3 jbd uhci_hcd
> ohci_hcd ehci_hcd
> Pid: 0, comm: swapper Tainted: G 2.6.18-194.11.1.el5xen #1
> RIP: e030:[<ffffffff8041a95f>] [<ffffffff8041a95f>] skb_copy_bits+0x114/0x1d3
> RSP: e02b:ffff88000112fdd0 EFLAGS: 00010246
> RAX: 0000000000000042 RBX: ffff88001ef04480 RCX: 0000000000000b50
> RDX: ffff8800238f0d00 RSI: ffff88002e864000 RDI: ffff880027bc0000
> RBP: 0000000000000000 R08: ffff8800238f0d10 R09: 0000000000000b92
> R10: 0000000000000b50 R11: 0000000000000000 R12: 0000000000000042
> R13: 0000000000000042 R14: 0000000000000000 R15: ffff880027bc0000
> FS: 00002b2e6ab313f0(0000) GS:ffffffff805d2100(0000) knlGS:0000000000000000
> CS: e033 DS: 002b ES: 002b
> Process swapper (pid: 0, threadinfo ffff880006186000, task ffff8800000657e0)
> Stack: ffff88002c8b27c0 ffff88002b7c8b80 0000000000000b50 ffff88001e5abe80
> ffff8800289cf500 ffff88001ef04480 ffff880001be3200 ffffffff8836b732
> ffff8800289cf000 0000000000000042
> Call Trace:
> <IRQ> [<ffffffff8836b732>] :netbk:netif_be_start_xmit+0x241/0x471
> [<ffffffff8041fbde>] dev_hard_start_xmit+0x1b7/0x28a
> [<ffffffff8042fff5>] __qdisc_run+0x136/0x1f9
> [<ffffffff803b348c>] unmask_evtchn+0x2d/0xd7
> [<ffffffff80420f33>] net_tx_action+0xc9/0xf1
> [<ffffffff80212cd3>] __do_softirq+0x8d/0x13b
> [<ffffffff80260da4>] call_softirq+0x1c/0x278
> [<ffffffff8026e0c1>] do_softirq+0x31/0x98
> [<ffffffff8026df4d>] do_IRQ+0xec/0xf5
> [<ffffffff803b3e14>] evtchn_do_upcall+0x13b/0x1fb
> [<ffffffff802608d6>] do_hypervisor_callback+0x1e/0x2c
> <EOI> [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000
> [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000
> [<ffffffff8026f4eb>] raw_safe_halt+0x84/0xa8
> [<ffffffff8026ca80>] xen_idle+0x38/0x4a
> [<ffffffff8024add7>] cpu_idle+0x97/0xba
>
>
> Code: f3 a4 0f 84 a2 00 00 00 45 01 d4 49 89 ff 41 ff c6 45 89 cd
> RIP [<ffffffff8041a95f>] skb_copy_bits+0x114/0x1d3
> RSP <ffff88000112fdd0>
> CR2: ffff88002e864000
> test6: no IPv6 routers present
> <0>Kernel panic - not syncing: Fatal exception
> BUG: warning at
> arch/x86_64/kernel/genapic_xen.c:92/xen_send_IPI_mask() (Tainted: G
> )
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
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