[Xen-users] Re: invalid opcode on Dom0

[Nephila <segnalazioni@xxxxxxxxxx>]

Alle 09:21 di lunedà 25 febbraio 2008, Nephila ha scritto:
> We have a (supposedly) quite standard setup: 2 Dom0 with drbd-on-lvm and a
> bunch of DomU, on Quad Xeon Dell servers.
> We tried with both Debian sid-based and Debian etch-based (+ 3.1 xen
> hypervisor and drbd 8
> from backports.org ) Dom0, and quite consistently have "kernel: invalid
> opcode: 0000 [1] SMP" errors which freezes Dom0 (during lasts tests a
> simple start-and-stop loop of 10 DomU can trigger this error) .
> Given that everything is ok on scaled down (AMD Athlon64-based PCs) test
> setup we built to investigate these issues, i would like to know if you are
> aware of any platform specific problem bug which could generate such
> problem
>
> Thanks

I managed to get a kernel panic dump (which is at the bottom of the message).
I'll try to compile a xensource xen kernel and reproduce there.
BTW: The error below occurred on a file-only setup (no lvm or drbd)

----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at drivers/xen/core/evtchn.c:481
invalid opcode: 0000 [1] SMP
CPU 3
Modules linked in: cn netloop ipv6 button ac battery iptable_raw xt_policy 
xt_multiport ipt_ULOG ipt_TTL ipt_ttl ipt_TOS ipt_tos ipt_TCPMSS ipt_SAME 
ipt_REJECT ipt_REDIRECT ipt_recent ipt_owner ipt_NETMAP ipt_MASQUERADE 
ipt_LOG ipt_iprange ipt_hashlimit ipt_ECN ipt_ecn ipt_DSCP ipt_dscp 
ipt_CLUSTERIP ipt_ah ipt_addrtype ip_nat_tftp ip_nat_snmp_basic ip_nat_pptp 
ip_nat_irc ip_nat_ftp ip_nat_amanda ip_conntrack_tftp ip_conntrack_pptp 
ip_conntrack_netbios_ns ip_conntrack_irc ip_conntrack_ftp ts_kmp 
ip_conntrack_amanda xt_tcpmss xt_pkttype xt_physdev bridge xt_NFQUEUE xt_MARK 
xt_mark xt_mac xt_limit xt_length xt_helper xt_dccp xt_conntrack xt_CONNMARK 
xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat ip_nat ip_conntrack 
iptable_mangle nfnetlink iptable_filter ip_tables x_tables xfs loop i2c_i801 
shpchp pci_hotplug evdev i2c_core serio_raw serial_core psmouse pcspkr ext3 
jbd mbcache dm_mirror dm_snapshot dm_mod sd_mod ide_cd cdrom generic mptsas 
mptscsih mptbase piix scsi_transport_sas ehci_hcd ide_core scsi_mod tg3 
uhci_hcd fan
Pid: 21, comm: xenwatch Not tainted 2.6.18-6-xen-amd64 #1
RIP: e030:[<ffffffff8035fe3c>]  [<ffffffff8035fe3c>] retrigger+0x26/0x3e
RSP: e02b:ffff8800f26ddd88  EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000008d00 RCX: ffffffffff578000
RDX: 000000000000002d RSI: ffff8800f26ddd30 RDI: 000000000000011a
RBP: ffffffff804cc180 R08: ffffffff8028dbc9 R09: ffff8800f268eac0
R10: ffff8800ef65c580 R11: ffffffff8035fe16 R12: 000000000000011a
R13: ffffffff804cc1bc R14: 0000000000000000 R15: 0000000000000009
FS:  00002aaca49b3ae0(0000) GS:ffffffff804c2180(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000
Process xenwatch (pid: 21, threadinfo ffff8800f26dc000, task ffff8800f26c2080)
Stack:  ffffffff802a0109  ffff880082dadd00  ffff880082dadd00  0000000000000000
 ffff8800f26ddde0  000000000000040d  ffffffff8036c95f  0000000000000000
 ffffffff8036cdd5  ffff8800f26ddea4
Call Trace:
 [<ffffffff802a0109>] enable_irq+0x9d/0xbc
 [<ffffffff8036c95f>] __netif_up+0xc/0x15
 [<ffffffff8036cdd5>] netif_map+0x2a4/0x2d6
 [<ffffffff8035b1a2>] bus_for_each_dev+0x61/0x6e
 [<ffffffff80365608>] xenwatch_thread+0x0/0x145
 [<ffffffff80365608>] xenwatch_thread+0x0/0x145
 [<ffffffff8036714b>] frontend_changed+0x2ba/0x4f9
 [<ffffffff80365608>] xenwatch_thread+0x0/0x145
 [<ffffffff8028f3de>] keventd_create_kthread+0x0/0x61
 [<ffffffff80364a1c>] xenwatch_handle_callback+0x15/0x48
 [<ffffffff80365735>] xenwatch_thread+0x12d/0x145
 [<ffffffff8028f5a1>] autoremove_wake_function+0x0/0x2e
 [<ffffffff8028f3de>] keventd_create_kthread+0x0/0x61
 [<ffffffff80365608>] xenwatch_thread+0x0/0x145
 [<ffffffff802333f6>] kthread+0xd4/0x107
 [<ffffffff8025c5f8>] child_rip+0xa/0x12
 [<ffffffff8028f3de>] keventd_create_kthread+0x0/0x61
 [<ffffffff80233322>] kthread+0x0/0x107
 [<ffffffff8025c5ee>] child_rip+0x0/0x12


Code: 0f 0b 68 54 bb 41 80 c2 e1 01 f0 0f ab 91 00 08 00 00 b8 01
RIP  [<ffffffff8035fe3c>] retrigger+0x26/0x3e
 RSP <ffff8800f26ddd88>


-- 

Regards

Nephila sas
PGP key block: http://www.nephila.it/pgp

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