On Mon, Jan 14, 2013 at 1:42 AM, Alex Riesen <raa.l...@gmail.com> wrote: > > 1. Compile a kernel with deadline elevator as module > 2. Boot into it, make sure the elevator is selected > (I used "elevator=deadline" in the kernel command line) > 3. Insert a FAT formatted mass storage device in an USB2 port > Observe "io scheduler deadline registered" > 4. Pull the stick out, wait a moment, and either shutdown or just > and press alt-sysrq-W:
I can reproduce the problem too on one ehci-only system(Pandaboard) with deadline elevator module case, and no such problem in the built-in case, and still on 3.8-rc3. Follows the dmesg log: [ 85.665679] usb 1-1.2.2: new high-speed USB device number 5 using ehci-omap [ 85.784423] usb 1-1.2.2: default language 0x0409 [ 85.790008] usb 1-1.2.2: udev 5, busnum 1, minor = 4 [ 85.790039] usb 1-1.2.2: New USB device found, idVendor=0951, idProduct=1624 [ 85.790039] usb 1-1.2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 85.790069] usb 1-1.2.2: Product: DataTraveler G2 [ 85.790069] usb 1-1.2.2: Manufacturer: Kingston [ 85.790100] usb 1-1.2.2: SerialNumber: 0019E06C5346EA41D0000071 [ 85.790100] device: '1-1.2.2': device_add [ 85.790344] bus: 'usb': add device 1-1.2.2 [ 85.790405] PM: Adding info for usb:1-1.2.2 [ 85.790740] bus: 'usb': driver_probe_device: matched device 1-1.2.2 with driver usb [ 85.790771] bus: 'usb': really_probe: probing driver usb with device 1-1.2.2 [ 85.790802] usb 1-1.2.2: usb_probe_device [ 85.790832] usb 1-1.2.2: configuration #1 chosen from 1 choice [ 85.791076] usb 1-1.2.2: adding 1-1.2.2:1.0 (config #1, interface 0) [ 85.791076] device: '1-1.2.2:1.0': device_add [ 85.791137] bus: 'usb': add device 1-1.2.2:1.0 [ 85.791168] PM: Adding info for usb:1-1.2.2:1.0 [ 85.791442] device: 'ep_81': device_add [ 85.791564] PM: Adding info for No Bus:ep_81 [ 85.791564] device: 'ep_02': device_add [ 85.791687] PM: Adding info for No Bus:ep_02 [ 85.791687] driver: '1-1.2.2': driver_bound: bound to device 'usb' [ 85.791717] bus: 'usb': really_probe: bound device 1-1.2.2 to driver usb [ 85.791748] PM: Moving platform:musb-hdrc.0.auto to end of list [ 85.791748] device: 'ep_00': device_add [ 85.791778] platform musb-hdrc.0.auto: Retrying from deferred list [ 85.791839] PM: Adding info for No Bus:ep_00 [ 85.791839] bus: 'platform': driver_probe_device: matched device musb-hdrc.0.auto with driver musb-hdrc [ 85.791839] bus: 'platform': really_probe: probing driver musb-hdrc with device musb-hdrc.0.auto [ 85.791870] hub 1-1.2:1.0: state 7 ports 4 chg 0000 evt 0004 [ 85.791900] unable to find transceiver of type USB2 PHY [ 85.797454] HS USB OTG: no transceiver configured [ 85.802703] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517 [ 85.811157] platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral [ 85.811187] platform musb-hdrc.0.auto: Added to deferred list [ 85.811218] PM: Moving platform:twl6030_usb to end of list [ 85.811218] platform twl6030_usb: Retrying from deferred list [ 85.811279] bus: 'platform': driver_probe_device: matched device twl6030_usb with driver twl6030_usb [ 85.811279] bus: 'platform': really_probe: probing driver twl6030_usb with device twl6030_usb [ 85.811309] twl6030_usb twl6030_usb: phy not ready, deferring probe [ 85.811462] platform twl6030_usb: Driver twl6030_usb requests probe deferral [ 85.811462] platform twl6030_usb: Added to deferred list [ 85.883331] Initializing USB Mass Storage driver... [ 85.883361] bus: 'usb': add driver usb-storage [ 85.883453] bus: 'usb': driver_probe_device: matched device 1-1.2.2:1.0 with driver usb-storage [ 85.883483] bus: 'usb': really_probe: probing driver usb-storage with device 1-1.2.2:1.0 [ 85.883514] usb-storage 1-1.2.2:1.0: usb_probe_interface [ 85.883544] usb-storage 1-1.2.2:1.0: usb_probe_interface - got id [ 85.884094] scsi0 : usb-storage 1-1.2.2:1.0 [ 85.884155] device: 'host0': device_add [ 85.884185] bus: 'scsi': add device host0 [ 85.884246] PM: Adding info for scsi:host0 [ 85.884552] device: 'host0': device_add [ 85.884674] PM: Adding info for No Bus:host0 [ 85.884948] driver: '1-1.2.2:1.0': driver_bound: bound to device 'usb-storage' [ 85.884979] bus: 'usb': really_probe: bound device 1-1.2.2:1.0 to driver usb-storage [ 85.884979] PM: Moving platform:musb-hdrc.0.auto to end of list [ 85.885009] platform musb-hdrc.0.auto: Retrying from deferred list [ 85.885070] bus: 'platform': driver_probe_device: matched device musb-hdrc.0.auto with driver musb-hdrc [ 85.885070] bus: 'platform': really_probe: probing driver musb-hdrc with device musb-hdrc.0.auto [ 85.885131] unable to find transceiver of type USB2 PHY [ 85.886230] usbcore: registered new interface driver usb-storage [ 85.886230] USB Mass Storage support registered. [ 85.890655] HS USB OTG: no transceiver configured [ 85.895660] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517 [ 85.903839] platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral [ 85.903869] platform musb-hdrc.0.auto: Added to deferred list [ 85.903869] PM: Moving platform:twl6030_usb to end of list [ 85.903900] platform twl6030_usb: Retrying from deferred list [ 85.903930] bus: 'platform': driver_probe_device: matched device twl6030_usb with driver twl6030_usb [ 85.903961] bus: 'platform': really_probe: probing driver twl6030_usb with device twl6030_usb [ 85.903991] twl6030_usb twl6030_usb: phy not ready, deferring probe [ 85.904022] platform twl6030_usb: Driver twl6030_usb requests probe deferral [ 85.904052] platform twl6030_usb: Added to deferred list [ 86.901367] io scheduler deadline registered (default) [ 181.168487] INFO: task modprobe:2462 blocked for more than 90 seconds. [ 181.175323] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 181.183624] modprobe D c04f1920 0 2462 2461 0x00000000 [ 181.183685] [<c04f1920>] (__schedule+0x5fc/0x6d4) from [<c005eba4>] (async_synchronize_cookie_domain+0xdc/0x 168) [ 181.183715] [<c005eba4>] (async_synchronize_cookie_domain+0xdc/0x168) from [<c005ed04>] (async_synchronize_f ull+0x3c/0x60) [ 181.183776] [<c005ed04>] (async_synchronize_full+0x3c/0x60) from [<c0085610>] (load_module+0x1aac/0x1cdc) [ 181.183807] [<c0085610>] (load_module+0x1aac/0x1cdc) from [<c0085944>] (sys_init_module+0x104/0x110) [ 181.183837] [<c0085944>] (sys_init_module+0x104/0x110) from [<c000dfe0>] (ret_fast_syscall+0x0/0x48) [ 271.175506] INFO: task modprobe:2462 blocked for more than 90 seconds. [ 271.182373] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 271.190826] modprobe D c04f1920 0 2462 2461 0x00000000 [ 271.190887] [<c04f1920>] (__schedule+0x5fc/0x6d4) from [<c005eba4>] (async_synchronize_cookie_domain+0xdc/0x 168) [ 271.190917] [<c005eba4>] (async_synchronize_cookie_domain+0xdc/0x168) from [<c005ed04>] (async_synchronize_f ull+0x3c/0x60) [ 271.190948] [<c005ed04>] (async_synchronize_full+0x3c/0x60) from [<c0085610>] (load_module+0x1aac/0x1cdc) [ 271.190948] [<c0085610>] (load_module+0x1aac/0x1cdc) from [<c0085944>] (sys_init_module+0x104/0x110) [ 271.190979] [<c0085944>] (sys_init_module+0x104/0x110) from [<c000dfe0>] (ret_fast_syscall+0x0/0x48) Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
