Hi, On 01/15/12 23:45, loody wrote: > hi all: > 2012/1/15 loody <miloody@xxxxxxxxx>: >> Dear all: >> I use kernel 2.6.35.13 and cpu for mips >> When I plug in/out usb stick for several times I got following warning >> messages as I append at the end of mail. >> >> is it possible correlate to below issue >> http://thread.gmane.org/gmane.linux.kernel/1177383/focus=69879 > I want to reproduce the issue of the thread above in my platform. > But I have no idea about: > 1 dm-multipath > 2. dm-round-robin > > are they additional module I need to download or it already include > kernel source? > if the later, which config I shout select? They are in kernel source (in drivers/md). You have to select CONFIG_BLK_DEV_DM and CONFIG_DM_MULTIPATH to enable them. To try reproducer in the thread, you also need "dmsetup" command, which is part of device-mapper utility. > Appreciate your help, > >> >> >> INFO: task kblockd/0:10 blocked for more than 120 seconds. >> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> kblockd/0 D [87016a78] 802d1e48 0 10 0x00100000 2 >> 11 9 (kernel thread) >> Stack : 00000001 80107148 8562ed80 800e9098 00000001 00000001 7fffffff 00000000 >> 00000000 7fffffff 87053d38 ffffffff 87053d38 87053d28 872ff00c 802d1e48 >> 00000001 00000009 00000102 80071c80 00005965 0056addf 00005965 00000001 >> 00000000 00000000 7fffffff 80020c64 00000000 00000002 00000000 00000000 >> 7fffffff 802d1ca8 00000000 80024538 00000004 0000000a 00000001 87016a78 >> ... >> Call Trace: >> [<802d1764>] schedule+0x648/0x70c from[<802d1e48>] schedule_timeout+0x30/0x324 >> [<802d1e48>] schedule_timeout+0x30/0x324 from[<802d1ca8>] >> wait_for_common+0xf8/0x1c0 >> [<802d1ca8>] wait_for_common+0xf8/0x1c0 from[<80044400>] >> __cancel_work_timer+0x188/0x210 >> [<80044400>] __cancel_work_timer+0x188/0x210 from[<801a48c4>] >> blk_cleanup_queue+0x18/0x6c >> [<801a48c4>] blk_cleanup_queue+0x18/0x6c from[<802098f4>] >> scsi_device_dev_release_usercontext+0x174/0x1e4 >> [<802098f4>] scsi_device_dev_release_usercontext+0x174/0x1e4 >> from[<80043aa8>] execute_in_process_context+0x30/0x5c >> [<80043aa8>] execute_in_process_context+0x30/0x5c from[<801eeda8>] >> device_release+0x54/0x90 >> [<801eeda8>] device_release+0x54/0x90 from[<801b0180>] kobject_release+0x70/0xa8 >> [<801b0180>] kobject_release+0x70/0xa8 from[<801b17bc>] kref_put+0x80/0x98 >> [<801b17bc>] kref_put+0x80/0x98 from[<80203c04>] scsi_request_fn+0x51c/0x61c >> [<80203c04>] scsi_request_fn+0x51c/0x61c from[<801a482c>] >> generic_unplug_device+0x38/0x7c >> [<801a482c>] generic_unplug_device+0x38/0x7c from[<80043e90>] >> worker_thread+0x1ec/0x2d4 >> [<80043e90>] worker_thread+0x1ec/0x2d4 from[<800482c4>] kthread+0x7c/0x84 >> [<800482c4>] kthread+0x7c/0x84 from[<80007818>] kernel_thread_helper+0x10/0x18 >> >> ------------------------------------------------------------------------------------- >> hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 >> hub 1-0:1.0: port 1, status 0000, change 0001, 12 Mb/s >> usb 1-1: USB disconnect, address 35 >> usb 1-1: unregistering device >> usb 1-1: unregistering interface 1-1:1.0 >> usb 1-1: usb_disable_device nuking all URBs >> hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x0 >> hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 >> ehci-ehci ehci-ehci.0: GetStatus port 1 status 000803 sig=j CSC CONNECT >> hub 1-0:1.0: port 1, status 0401, change 0001, 480 Mb/s >> hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x401 >> ehci-ehci ehci-ehci.0: port 1 high speed >> ehci-ehci ehci-ehci.0: GetStatus port 1 status 00000d sig=se0 PEC PE CONNECT >> usb 1-1: new high speed USB device using ehci-ehci and address 36 >> ehci-ehci ehci-ehci.0: port 1 high speed >> ehci-ehci ehci-ehci.0: GetStatus port 1 status 00000d sig=se0 PEC PE CONNECT >> usb 1-1: default language 0x0409 >> usb 1-1: udev 36, busnum 1, minor = 35 -- Jun'ichi Nomura, NEC Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
