Chun-Hung Chen, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p linux <replace-with-bug-number> If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.13-rc6 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1060760 Title: Hot plug and unplug causes system hangs Status in “linux” package in Ubuntu: Incomplete Bug description: We are testing our hardware stability with hot plug and unplug several times and it causes our system hangs. The SAS Controller is Intel C600 with driver version 1.0.0. The syslog related to the issue listed below. Oct 2 16:10:41 MyTestBox kernel: : [354243.488743] sas: command 0xffff881016964900, task 0xffff881014781a40, timed out: BLK_EH_NOT_HANDLED Oct 2 16:10:41 MyTestBox kernel: : [354243.488766] sas: Enter sas_scsi_recover_host Oct 2 16:10:41 MyTestBox kernel: : [354243.488772] sas: trying to find task 0xffff881014781a40 Oct 2 16:10:41 MyTestBox kernel: : [354243.488776] sas: sas_scsi_find_task: aborting task 0xffff881014781a40 Oct 2 16:10:41 MyTestBox kernel: : [354243.488780] sas: sas_scsi_find_task: querying task 0xffff881014781a40 Oct 2 16:10:41 MyTestBox kernel: : [354243.488784] sas: sas_scsi_find_task: task 0xffff881014781a40 at LU Oct 2 16:10:41 MyTestBox kernel: : [354243.488787] sas: task 0xffff881014781a40 is at LU: lu recover Oct 2 16:10:41 MyTestBox kernel: : [354243.488791] sas: eh: device 1000000012345674 LUN 0 has the task Oct 2 16:10:41 MyTestBox kernel: : [354243.488803] sas: task 0xffff881014781a40 is not at LU: I_T recover Oct 2 16:10:41 MyTestBox kernel: : [354243.488806] sas: I_T nexus reset for dev 1000000012345674 Oct 2 16:10:41 MyTestBox kernel: : [354243.488891] isci 0000:03:00.0: sci_remote_node_context_event_handler: invalid state 5 Oct 2 16:10:41 MyTestBox kernel: : [354243.488900] isci 0000:03:00.0: isci_host_completion_routine: Error - request/task = ffff881014506000/ffff881014781a40 Oct 2 16:12:01 MyTestBox kernel: : [354268.517338] isci 0000:03:00.0: isci_port_perform_hard_reset: iport = ffff881014412b38; hard reset failed (0x21) - driving explicit link fail for all phys Oct 2 16:12:01 MyTestBox kernel: : [354268.517434] isci 0000:03:00.0: sci_port_remove_phy: in wrong state: 7 Oct 2 16:12:01 MyTestBox kernel: : [354268.517450] isci 0000:03:00.0: sci_remote_node_context_suspend: invalid state 3 Oct 2 16:12:01 MyTestBox kernel: : [354268.517455] isci 0000:03:00.0: sci_port_hard_reset: in wrong state: 7 Oct 2 16:12:01 MyTestBox kernel: : [354268.517459] isci 0000:03:00.0: isci_port_perform_hard_reset: iport = ffff881014412b38; sci_port_hard_reset call failed 0x8 Oct 2 16:12:01 MyTestBox kernel: : [354268.517536] isci 0000:03:00.0: isci_port_perform_hard_reset: iport = ffff881014412b38; hard reset failed (0x21) - driving explicit link fail for all phys Oct 2 16:12:01 MyTestBox kernel: : [354268.517625] isci 0000:03:00.0: sci_port_remove_phy: in wrong state: 7 Oct 2 16:12:01 MyTestBox kernel: : [354268.517632] isci 0000:03:00.0: sci_remote_node_context_resume: invalid state 4 Oct 2 16:12:01 MyTestBox kernel: : [354268.517636] sas: clearing nexus for port:2 Oct 2 16:12:01 MyTestBox kernel: : [354268.517639] sas: clear nexus ha Oct 2 16:12:01 MyTestBox kernel: : [354268.517641] sas: error from device 1000000012345674, LUN 0 couldn't be recovered in any way Oct 2 16:12:01 MyTestBox kernel: : [354268.517646] sas: sas_ata_task_done: SAS error 40 Oct 2 16:12:01 MyTestBox kernel: : [354268.517652] sas: --- Exit sas_eh_handle_sas_errors -- clear_q Oct 2 16:12:01 MyTestBox kernel: : [354268.517658] ata8: sas eh calling libata port error handler Oct 2 16:12:01 MyTestBox kernel: : [354268.517677] ata11: sas eh calling libata port error handler Oct 2 16:12:01 MyTestBox kernel: : [354268.517685] ata11.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 Oct 2 16:12:01 MyTestBox kernel: : [354268.517731] ata11.00: failed command: IDENTIFY DEVICE Oct 2 16:12:01 MyTestBox kernel: : [354268.517778] ata11.00: cmd ec/00:01:00:00:00/00:00:00:00:00/00 tag 0 pio 512 in Oct 2 16:12:01 MyTestBox kernel: : [354268.517780] res 01/04:00:00:00:00/00:00:00:00:00/00 Emask 0x12 (ATA bus error) Oct 2 16:12:01 MyTestBox kernel: : [354268.517911] ata11.00: status: { ERR } To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1060760/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
