[ovs-discuss] vswitchd stack trace during network time out

[ananthan]

Hi,

     One of our xenserver 6.1 running

ovs-vsctl (Open vSwitch) 1.4.2
Compiled Nov 23 2012 12:41:37

was showing NFS related error as it was not able to communicate with NFS.

in kernel.log it was showing stack trace with ovs pid in stack.

Can some one tell me does this stack trace show any issue with ovs.


Sep 4 15:27:37 n2 kernel: [3035589.378672] WARNING: at
arch/x86/kernel/cpu/mcheck/mce_dom0.c:39 convert_log+0x199/0x1b0()

Sep  4 15:27:37 n2 kernel: [3035589.378676] Hardware name: PowerEdge M915

Sep  4 15:27:37 n2 kernel: [3035589.378678] Modules linked in: tun nfs
nfs_acl auth_rpcgss tcp_diag inet_diag lockd sunrpc 8021q openvswitch
ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack
xt_tcpudp xt_multiport iptable_filter ip_tables x_tables binfmt_misc
video output sbs sbshc fan container battery ac parport_pc lp parport
nvram sr_mod cdrom evdev sg usbhid usb_storage usb_libusual thermal
button processor thermal_sys serio_raw 8250_pnp 8250 serial_core
rtc_cmos rtc_core rtc_lib tpm_tis tpm tpm_bios bnx2 bnx2x mdio
i2c_piix4 i2c_core pcspkr dm_snapshot dm_zero dm_mirror dm_region_hash
dm_log dm_mod mpt2sas scsi_transport_sas raid_class sd_mod scsi_mod
ext3 jbd uhci_hcd ohci_hcd ehci_hcd usbcore fbcon font tileblit
bitblit softcursor

Sep  4 15:27:37 n2 kernel: [3035589.378758] Pid: 6916, comm:
ovs-vswitchd Tainted: G        W
2.6.32.43-0.4.1.xs1.6.10.777.170770xen #1

Sep  4 15:27:37 n2 kernel: [3035589.378761] Call Trace:

Sep  4 15:27:37 n2 kernel: [3035589.378768]  [<c0110389>] ?
convert_log+0x199/0x1b0

Sep  4 15:27:37 n2 kernel: [3035589.378774]  [<c0134611>]
warn_slowpath_common+0x81/0xa0

Sep  4 15:27:37 n2 kernel: [3035589.378778]  [<c0110389>] ?
convert_log+0x199/0x1b0

Sep  4 15:27:37 n2 kernel: [3035589.378782]  [<c013464a>]
warn_slowpath_null+0x1a/0x20

Sep  4 15:27:37 n2 kernel: [3035589.378786]  [<c0110389>]
convert_log+0x199/0x1b0

Sep  4 15:27:37 n2 kernel: [3035589.378790]  [<c014e8f0>] ?
autoremove_wake_function+0x0/0x50

Sep  4 15:27:37 n2 kernel: [3035589.378797]  [<c0110443>]
mce_dom0_interrupt+0xa3/0x120

Sep  4 15:27:37 n2 kernel: [3035589.378800]  [<c01d53d2>] ? d_kill+0x52/0x60

Sep  4 15:27:37 n2 kernel: [3035589.378806]  [<c01dc58b>] ?
mntput_no_expire+0x1b/0xd0

Sep  4 15:27:37 n2 kernel: [3035589.378811]  [<c01c59e5>] ? __fput+0x175/0x1f0

Sep  4 15:27:37 n2 kernel: [3035589.378815]  [<c01c264a>] ?
put_unused_fd+0x3a/0x70

Sep  4 15:27:37 n2 kernel: [3035589.378820]  [<c03415b6>] ?
sys_accept4+0x1b6/0x220

Sep  4 15:27:37 n2 kernel: [3035589.378824]  [<c0341dda>] ?
sock_ioctl+0x7a/0x230

Sep  4 15:27:37 n2 kernel: [3035589.378829]  [<c016aa05>]
handle_IRQ_event+0x55/0x180

Sep  4 15:27:37 n2 kernel: [3035589.378833]  [<c01d28ad>] ? vfs_ioctl+0x2d/0x90

Sep  4 15:27:37 n2 kernel: [3035589.378838]  [<c016cfb9>]
handle_fasteoi_irq+0x89/0x120

Sep  4 15:27:37 n2 kernel: [3035589.378842]  [<c0105ec9>] handle_irq+0x39/0x60

Sep  4 15:27:37 n2 kernel: [3035589.378848]  [<c03d9da6>]
evtchn_do_upcall+0x156/0x372

Sep  4 15:27:37 n2 kernel: [3035589.378852]  [<c010477f>]
hypervisor_callback+0x43/0x4b

Sep  4 15:27:37 n2 kernel: [3035589.378855]  [<c010491c>] ?
ia32pv_cstar_target+0x0/0x8d

Sep  4 15:27:37 n2 kernel: [3035589.378859] ---[ end trace 529878031f4307ab ]---

Regards,

Ananth
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