<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hi All,</div><div><br></div><div>when I reproduce it again, the log as below:</div><div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: New USB device found, idVendor=1199, idProduct=9071</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: Product: Sierra Wireless MC7455 Qualcomm® Snapdragon™ X7 LTE-A</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: Manufacturer: Sierra Wireless, Incorporated</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: SerialNumber: LU55030071041009</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: GobiSerial 1-1.6.5:1.2: GobiSerial converter detected</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: GobiSerial converter now attached to ttyUSB11</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: GobiSerial 1-1.6.5:1.3: GobiSerial converter detected</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: usb 1-1.6.5: GobiSerial converter now attached to ttyUSB12</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: qmi_wwan 1-1.6.5:1.8: cdc-wdm11: USB WDM device</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: qmi_wwan 1-1.6.5:1.8 wwan10: register 'qmi_wwan' at usb-0000:00:1d.0-1.6.5, WWAN/QMI device, c2:1d:5c:87:2a:56</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: qmi_wwan 1-1.6.5:1.10: cdc-wdm12: USB WDM device</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack kernel: qmi_wwan 1-1.6.5:1.10 wwan11: register 'qmi_wwan' at usb-0000:00:1d.0-1.6.5, WWAN/QMI device, c2:1d:5c:87:2a:56</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack systemd-sysctl[26114]: Overwriting earlier assignment of kernel/sysrq in file '/usr/lib64/sysctl.d/60-<wbr></wbr>gentoo.conf'.</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack NetworkManager[755]: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:<wbr></wbr>00:1d.0/usb1/1-1/1-1.6/1-1.6.<wbr></wbr>5/1-1.6.5:1.8/net/wwan10, iface: wwan10)</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack NetworkManager[755]: SCPluginIfupdown: locking wired connection setting</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack NetworkManager[755]: Ifupdown: get unmanaged devices count: 13</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack systemd-sysctl[26116]: Overwriting earlier assignment of kernel/sysrq in file '/usr/lib64/sysctl.d/60-<wbr></wbr>gentoo.conf'.</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack NetworkManager[755]: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:<wbr></wbr>00:1d.0/usb1/1-1/1-1.6/1-1.6.<wbr></wbr>5/1-1.6.5:1.10/net/wwan11, iface: wwan11)</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack NetworkManager[755]: SCPluginIfupdown: locking wired connection setting</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:12:59 tvupack NetworkManager[755]: Ifupdown: get unmanaged devices count: 14</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack perl[13323]: tvudial : slotid: 5, using dev 0 -> cdc-wdm3 to dial MC7430</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack perl[13323]: tvudial : slotid: 5, using dev 0 -> wwan2 to dial MC7430, diaing net name: wwan2</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: usb 1-1.6.2: USB disconnect, device number 48</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: GobiSerial driver ttyUSB5: GobiSerial converter now disconnected from ttyUSB5</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: GobiSerial 1-1.6.2:1.2: device disconnected</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: GobiSerial driver ttyUSB6: GobiSerial converter now disconnected from ttyUSB6</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: GobiSerial 1-1.6.2:1.3: device disconnected</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: qmi_wwan 1-1.6.2:1.8 wwan4: unregister 'qmi_wwan' usb-0000:00:1d.0-1.6.2, WWAN/QMI device</div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: qmi_wwan 1-1.6.2:1.10 wwan5: unregister 'qmi_wwan' usb-0000:00:1d.0-1.6.2, WWAN/QMI device</div></div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;"><span style="line-height: 23.324px;">Sep 01 23:13:15 tvupack kernel: skbuff: skb_under_panic: text:ffffffff816a609d len:167 put:65 head:ffff8800682ddc40 data:ffff8800682ddc3f tail:0xa6 end:0x640 dev:wwan8</span></div><div style="font-family: Helvetica, "Microsoft Yahei", verdana; line-height: 23.324px;"><br></div><br><br><br><br><div style="position:relative;zoom:1">--<br><div>
<div style="FONT-SIZE: 14px">
<div align="left"><strong><font color="#0000ff"><em>Best Regards,</em></font></strong></div>
<div><strong><font color="#0000ff"><em>Dai,Lijin</em></font></strong></div></div></div><div style="clear:both"></div></div><div id="divNeteaseMailCard"></div><br>在 2016-09-02 10:00:24,"dailijin" <dailijin126@126.com> 写道:<br> <blockquote id="isReplyContent" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hi Bjorn,</div><div><br></div><div>I am not sure whether the modem send IPV6 packet, how do I check this?</div><div><br></div><div>I also reproduce this issue again. plugin 6 MC7430 with 3 SIM card, connect WIFI, the device do live about 12 hour with 400k/2s, this issue happen.</div><div><br></div><div>I also attach qmi_wwan driver source code, could you check it and whether can find any clue about this issue? the uncompress command is "tar zxvf my_qmi_wwan.tar.gz"</div><div><br></div><div>I am very appreciate all your notice on this issue.</div><br><br><br><div style="position:relative;zoom:1">--<br><div>
<div style="FONT-SIZE: 14px">
<div align="left"><strong><font color="#0000ff"><em>Best Regards,</em></font></strong></div>
<div><strong><font color="#0000ff"><em>Dai,Lijin</em></font></strong></div></div></div><div style="clear:both"></div></div><div></div><br><pre><br>在 2016-09-02 02:53:12,"Bjørn Mork" <<a href="mailto:bjorn@mork.no">bjorn@mork.no</a>> 写道:
>dailijin <<a href="mailto:dailijin126@126.com">dailijin126@126.com</a>> writes:
>
>> void usbnet_skb_return (struct usbnet *dev, struct sk_buff *skb)
>> {
>> int status;
>>
>>
>> if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
>> skb_queue_tail(&dev->rxq_pause, skb);
>> return;
>> }
>> if (skb->protocol != 8)
>> skb->protocol = eth_type_trans (skb, dev->net);
>> .......
>> }
>
>And if the modem ever sends qmi_wwan a raw IPv6 packet, then that will
>obviously blow up...
>
>
>Bjørn
>_______________________________________________
>libqmi-devel mailing list
><a href="mailto:libqmi-devel@lists.freedesktop.org">libqmi-devel@lists.freedesktop.org</a>
>https://lists.freedesktop.org/mailman/listinfo/libqmi-devel
</pre></div><br><br><span title="neteasefooter"><p> </p></span></blockquote></div><br><br><span title="neteasefooter"><div id="netease_mail_footer"><div style="border-top:#CCC 1px solid;padding:10px 5px;font-size:15px;color:#777;line-height:22px"><a href="http://you.163.com/item/detail?id=1055021&from=web_gg_mail_jiaobiao_3" target="_blank" style="color:#3366FF;text-decoration:none">【网易自营|30天无忧退货】Moleskine制造商直供经典商务皮面记事本,限时仅39元></a>
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