https://community.extremenetworks.com/t5/extremeswitching-exos-switch/data-bus-error/m-p/53847#M15237 Hello, all!<BR /> <BR /> Help please - is below issue HW (RMA) or SW?<BR /> <BR /> System Type: X460G2-24x-10G4<BR /> X460 had EXOS 16.1.3.6<BR /> Appear unexpected reboot:<BR /> 09/18/2018 22:31:26.73 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> 09/18/2018 22:30:32.41 <KERN.ALERT> Data bus error, epc == ffffffff801324d0, ra == ffffffff80130e70, DPA=0x0<BR /> <BR /> 09/07/2018 10:51:48.57 <KERN.ERROR> hub 1-0:1.0: unable to enumerate USB device on port 1<BR /> 09/07/2018 08:36:29.05 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> 09/07/2018 08:35:20.77 <KERN.ALERT> Data bus error, epc == ffffffff801324d0, ra == ffffffff80130e70, DPA=0x0<BR /> <BR /> -&gt;show debug system-dump<BR /> ===============================================<BR /> Switch system dump information<BR /> ===============================================<BR /> core_dump_info storage: 8/5120 used [empty]<BR /> failure: kernel oops<BR /> reason: Oops<BR /> time: Tue Sep 18 22:30:25 2018<BR /> ...<BR /> log: ... Data bus error, epc == ffffffff801324d0, ra == ffffffff80130e70, DPA=0x0<BR /> log: &lt;6&gt;Dumping ftrace buffer:<BR /> log: &lt;6&gt; (ftrace buffer empty)<BR /> <BR /> After upgrade to EXOS 21.1.5.2 switch rebooted again (but without "Data bus error" logs)<BR /> 10/09/2018 09:42:54.72 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> 10/09/2018 05:12:22.18 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> <BR /> Thank you!</EPM.UNEXPCTREBOOTDTECT></EPM.UNEXPCTREBOOTDTECT></KERN.ALERT></EPM.UNEXPCTREBOOTDTECT></KERN.ERROR></KERN.ALERT></EPM.UNEXPCTREBOOTDTECT> Tue, 09 Oct 2018 14:36:00 GMT Alexandr_P 2018-10-09T14:36:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/data-bus-error/m-p/53847#M15237 Hello, all!<BR /> <BR /> Help please - is below issue HW (RMA) or SW?<BR /> <BR /> System Type: X460G2-24x-10G4<BR /> X460 had EXOS 16.1.3.6<BR /> Appear unexpected reboot:<BR /> 09/18/2018 22:31:26.73 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> 09/18/2018 22:30:32.41 <KERN.ALERT> Data bus error, epc == ffffffff801324d0, ra == ffffffff80130e70, DPA=0x0<BR /> <BR /> 09/07/2018 10:51:48.57 <KERN.ERROR> hub 1-0:1.0: unable to enumerate USB device on port 1<BR /> 09/07/2018 08:36:29.05 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> 09/07/2018 08:35:20.77 <KERN.ALERT> Data bus error, epc == ffffffff801324d0, ra == ffffffff80130e70, DPA=0x0<BR /> <BR /> -&gt;show debug system-dump<BR /> ===============================================<BR /> Switch system dump information<BR /> ===============================================<BR /> core_dump_info storage: 8/5120 used [empty]<BR /> failure: kernel oops<BR /> reason: Oops<BR /> time: Tue Sep 18 22:30:25 2018<BR /> ...<BR /> log: ... Data bus error, epc == ffffffff801324d0, ra == ffffffff80130e70, DPA=0x0<BR /> log: &lt;6&gt;Dumping ftrace buffer:<BR /> log: &lt;6&gt; (ftrace buffer empty)<BR /> <BR /> After upgrade to EXOS 21.1.5.2 switch rebooted again (but without "Data bus error" logs)<BR /> 10/09/2018 09:42:54.72 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> 10/09/2018 05:12:22.18 <EPM.UNEXPCTREBOOTDTECT> Booting after System Failure.<BR /> <BR /> Thank you!</EPM.UNEXPCTREBOOTDTECT></EPM.UNEXPCTREBOOTDTECT></KERN.ALERT></EPM.UNEXPCTREBOOTDTECT></KERN.ERROR></KERN.ALERT></EPM.UNEXPCTREBOOTDTECT> Tue, 09 Oct 2018 14:36:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/data-bus-error/m-p/53847#M15237 Alexandr_P 2018-10-09T14:36:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/data-bus-error/m-p/53848#M15238 Hello Alexandr,<BR /> <BR /> Have you checked hardware conditions with CLI command "run diag extended"?<BR /> <BR /> Best Regards,<BR /> Nikolay Tue, 09 Oct 2018 15:31:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/data-bus-error/m-p/53848#M15238 Necheporenko__N 2018-10-09T15:31:00Z