[111359.099015] ------------[ cut here ]------------
[111359.099029] WARNING: at /build/buildd-linux-2.6_2.6.32-39-amd64-7yVIH2/linux-2.6-2.6.32/debian/build/source_amd64_none/drivers/usb/serial/usb-serial.c:440 serial_unthrottle+0x53/0x77 [usbserial]()
[111359.099034] Hardware name: ProLiant DL140 G3
[111359.099037] Modules linked in: dahdi_echocan_oslec wctdm24xxp dahdi_voicebus dahdi rfcomm btusb usblp ftdi_sio usbserial sco bridge stp bnep l2cap bluetooth rfkill crc_ccitt parport_pc ppdev lp parport nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs act_police cls_flow cls_fw cls_u32 sch_htb sch_hfsc sch_ingress sch_sfq xt_time xt_connlimit xt_realm iptable_raw xt_comment xt_recent xt_policy ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp xt_TPROXY nf_tproxy_core xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_MARK xt_mark xt_mac xt_limit xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp xt_conntrack xt_CONNMARK xt_connmark xt_CLASSIFY ipt_LOG xt_tcpudp xt_state iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink iptable_filter ip_tables x_tables ipmi_devintf coretemp ipmi_si ipmi_msghandler loop snd_pcm snd_timer snd soundcore snd_page_alloc i5000_edac edac_core i2c_i801 i2c_core rng_core pcspkr i5k_amb evdev serio_raw container shpchp button pci_hotplug processor ext4 mbcache jbd2 crc16 usb_storage usbhid hid raid1 md_mod sg sd_mod crc_t10dif sr_mod cdrom ata_generic ata_piix uhci_hcd 8139too 8139cp mii thermal thermal_sys ehci_hcd tg3 libata scsi_mod libphy usbcore nls_base [last unloaded: dahdi]
[111359.099219] Pid: 1253, comm: python Tainted: G        W  2.6.32-5-amd64 #1
[111359.099223] Call Trace:
[111359.099230]  [<ffffffffa02b25d9>] ? serial_unthrottle+0x53/0x77 [usbserial]
[111359.099236]  [<ffffffffa02b25d9>] ? serial_unthrottle+0x53/0x77 [usbserial]
[111359.099244]  [<ffffffff8104df9c>] ? warn_slowpath_common+0x77/0xa3
[111359.099249]  [<ffffffffa02b25d9>] ? serial_unthrottle+0x53/0x77 [usbserial]
[111359.099256]  [<ffffffff811fdd23>] ? tty_unthrottle+0x3c/0x47
[111359.099260]  [<ffffffff811fca77>] ? n_tty_flush_buffer+0xc/0x68
[111359.099265]  [<ffffffff811ff67e>] ? tty_ldisc_flush+0x27/0x3d
[111359.099270]  [<ffffffff811ffe9c>] ? tty_port_close_end+0x18/0xb9
[111359.099275]  [<ffffffffa02b29b2>] ? serial_close+0x78/0x92 [usbserial]
[111359.099279]  [<ffffffff811fa76e>] ? tty_release_dev+0x1b5/0x4b9
[111359.099286]  [<ffffffff81064f92>] ? autoremove_wake_function+0x0/0x2e
[111359.099290]  [<ffffffff811faa83>] ? tty_release+0x11/0x1a
[111359.099296]  [<ffffffff810efe1d>] ? __fput+0x100/0x1af
[111359.099301]  [<ffffffff810ed282>] ? filp_close+0x5b/0x62
[111359.099305]  [<ffffffff810ed31d>] ? sys_close+0x94/0xcd
[111359.099310]  [<ffffffff81010b42>] ? system_call_fastpath+0x16/0x1b
[111359.099314] ---[ end trace a9e75f77bab6e39b ]---