Hi guys! I have a μSD card that 100%-reproducibly causes the following when tested with f3probe: [ 9241.126155] usb 2-1: new high-speed USB device number 3 using ehci-pci [ 9241.287011] usb 2-1: New USB device found, idVendor=1976, idProduct=4082 [ 9241.293846] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 9241.301121] usb 2-1: Product: USB Reader [ 9241.305146] usb 2-1: Manufacturer: ChipsBnk [ 9241.309429] usb 2-1: SerialNumber: 110074973765 [ 9241.327255] usb-storage 2-1:1.0: USB Mass Storage device detected [ 9241.333801] scsi host8: usb-storage 2-1:1.0 [ 9241.338194] usbcore: registered new interface driver usb-storage [ 9242.370935] scsi 8:0:0:0: Direct-Access ChipsBnk Multi-Reader 4082 PQ: 0 ANSI: 2 [ 9242.379943] sd 8:0:0:0: Attached scsi generic sg2 type 0 [ 9242.381523] sd 8:0:0:0: [sdc] 30679040 512-byte logical blocks: (15.7 GB/14.6 GiB) [ 9242.382135] sd 8:0:0:0: [sdc] Write Protect is off [ 9242.382137] sd 8:0:0:0: [sdc] Mode Sense: 0b 00 00 08 [ 9242.382755] sd 8:0:0:0: [sdc] No Caching mode page found [ 9242.382757] sd 8:0:0:0: [sdc] Assuming drive cache: write through [ 9242.386877] sdc: [ 9242.396000] sd 8:0:0:0: [sdc] Attached SCSI removable disk f3probe /dev/sdc [ 9276.697035] usb 2-1: reset high-speed USB device number 3 using ehci-pci [ 9276.915066] sdc: [ 9626.072637] usb usb2-port1: disabled by hub (EMI?), re-enabling... [ 9626.078933] usb 2-1: USB disconnect, device number 3 [ 9626.085727] scsi 8:0:0:0: rejecting I/O to offline device [ 9626.091235] scsi 8:0:0:0: [sdc] killing request [ 9626.095846] scsi 8:0:0:0: rejecting I/O to offline device [ 9626.101318] scsi 8:0:0:0: [sdc] killing request [ 9626.106007] scsi 8:0:0:0: [sdc] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 9626.114400] scsi 8:0:0:0: [sdc] CDB: Read(10) 28 00 01 9e 2c b0 00 00 f0 00 [ 9626.121430] print_req_error: I/O error, dev sdc, sector 27143344 [ 9626.127523] scsi 8:0:0:0: [sdc] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 9626.135918] scsi 8:0:0:0: [sdc] CDB: Read(10) 28 00 01 9e 2d a0 00 00 f0 00 [ 9626.142918] print_req_error: I/O error, dev sdc, sector 27143584 [ 9787.760554] INFO: task kworker/0:1:63 blocked for more than 120 seconds. [ 9787.767381] Not tainted 4.15.0-rc2-debug-00490-gc09e9bbeb5d1 #1 [ 9787.773947] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 9787.781892] kworker/0:1 D 0 63 2 0x80000000 [ 9787.787495] Workqueue: usb_hub_wq hub_event [ 9787.791760] Call Trace: [ 9787.794277] ? __schedule+0x1a5/0x6e0 [ 9787.798028] schedule+0x23/0x80 [ 9787.801259] blk_mq_freeze_queue_wait+0x31/0x80 [ 9787.805919] ? wait_woken+0x80/0x80 [ 9787.809487] blk_cleanup_queue+0x68/0x110 [ 9787.813614] __scsi_remove_device+0x6f/0x150 [ 9787.818045] scsi_forget_host+0x1b/0x60 [ 9787.821964] scsi_remove_host+0x6d/0x100 [ 9787.825997] usb_stor_disconnect+0x57/0xc0 [usb_storage] [ 9787.831417] usb_unbind_interface+0x6c/0x270 [ 9787.835787] device_release_driver_internal+0x195/0x260 [ 9787.841125] bus_remove_device+0xd4/0x120 [ 9787.845263] device_del+0x11a/0x320 [ 9787.848802] ? usb_remove_ep_devs+0x16/0x30 [ 9787.853073] usb_disable_device+0x7b/0x1d0 [ 9787.857274] usb_disconnect+0xb6/0x220 [ 9787.861145] hub_event+0x733/0x1300 [ 9787.864698] process_one_work+0x1a7/0x340 [ 9787.868811] worker_thread+0x26/0x3f0 [ 9787.872630] ? create_worker+0x190/0x190 [ 9787.876698] kthread+0x107/0x120 [ 9787.879994] ? kthread_create_worker_on_cpu+0x40/0x40 [ 9787.885143] ret_from_fork+0x1f/0x30 [ 9787.888881] INFO: task f3probe:5269 blocked for more than 120 seconds. [ 9787.895530] Not tainted 4.15.0-rc2-debug-00490-gc09e9bbeb5d1 #1 [ 9787.902079] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 9787.910094] f3probe D 0 5269 4476 0x00000000 [ 9787.915683] Call Trace: [ 9787.918229] ? __schedule+0x1a5/0x6e0 [ 9787.921956] schedule+0x23/0x80 [ 9787.925182] io_schedule+0xd/0x40 [ 9787.928575] __blkdev_direct_IO_simple+0x1a2/0x2a0 [ 9787.933482] ? bdget+0x110/0x110 [ 9787.936800] blkdev_direct_IO+0x34c/0x390 [ 9787.940962] ? current_time+0x11/0x60 [ 9787.944716] ? generic_update_time+0x77/0xc0 [ 9787.949098] ? current_time+0x11/0x60 [ 9787.952863] generic_file_read_iter+0x9f/0x930 [ 9787.957465] ? invalidate_mapping_pages+0x6d/0x2a0 [ 9787.962360] ? lru_lazyfree_fn+0x2d0/0x2d0 [ 9787.966573] ? release_pages+0x2a5/0x340 [ 9787.970565] __vfs_read+0xcc/0x120 [ 9787.974054] vfs_read+0x98/0x150 [ 9787.977359] SyS_read+0x4b/0xb0 [ 9787.980583] ? SyS_lseek+0x6e/0xc0 [ 9787.984035] entry_SYSCALL_64_fastpath+0x17/0x70 [ 9787.988783] RIP: 0033:0x7fa6ab981750 [ 9787.992537] RSP: 002b:00007ffe29ce8568 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 9788.000294] RAX: ffffffffffffffda RBX: 00000000019e27fe RCX: 00007fa6ab981750 [ 9788.007525] RDX: 0000000000100000 RSI: 00007fa675184200 RDI: 0000000000000003 [ 9788.014858] RBP: 0000563803f9e4b0 R08: 00005638022efde0 R09: 0000000001d42000 [ 9788.022126] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000019e27ff [ 9788.029370] R13: 00007fa61eff3010 R14: 0000000000000001 R15: 00007fa61ec4a010 [ 9908.588627] INFO: task kworker/0:1:63 blocked for more than 120 seconds. [ 9908.595451] Not tainted 4.15.0-rc2-debug-00490-gc09e9bbeb5d1 #1 [ 9908.602076] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 9908.610015] kworker/0:1 D 0 63 2 0x80000000 [ 9908.615585] Workqueue: usb_hub_wq hub_event [ 9908.619868] Call Trace: [ 9908.622418] ? __schedule+0x1a5/0x6e0 [ 9908.626189] schedule+0x23/0x80 [ 9908.629463] blk_mq_freeze_queue_wait+0x31/0x80 [ 9908.634117] ? wait_woken+0x80/0x80 [ 9908.637704] blk_cleanup_queue+0x68/0x110 [ 9908.641843] __scsi_remove_device+0x6f/0x150 [ 9908.646232] scsi_forget_host+0x1b/0x60 [ 9908.650159] scsi_remove_host+0x6d/0x100 [ 9908.654210] usb_stor_disconnect+0x57/0xc0 [usb_storage] [ 9908.659690] usb_unbind_interface+0x6c/0x270 [ 9908.664089] device_release_driver_internal+0x195/0x260 [ 9908.669392] bus_remove_device+0xd4/0x120 [ 9908.673504] device_del+0x11a/0x320 [ 9908.677063] ? usb_remove_ep_devs+0x16/0x30 [ 9908.681398] usb_disable_device+0x7b/0x1d0 [ 9908.685588] usb_disconnect+0xb6/0x220 [ 9908.689444] hub_event+0x733/0x1300 [ 9908.693056] process_one_work+0x1a7/0x340 [ 9908.697165] worker_thread+0x26/0x3f0 [ 9908.700883] ? create_worker+0x190/0x190 [ 9908.704940] kthread+0x107/0x120 [ 9908.708236] ? kthread_create_worker_on_cpu+0x40/0x40 [ 9908.713464] ret_from_fork+0x1f/0x30 [ 9908.717240] INFO: task f3probe:5269 blocked for more than 120 seconds. [ 9908.723965] Not tainted 4.15.0-rc2-debug-00490-gc09e9bbeb5d1 #1 [ 9908.730527] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 9908.738539] f3probe D 0 5269 4476 0x00000000 [ 9908.744162] Call Trace: [ 9908.746698] ? __schedule+0x1a5/0x6e0 [ 9908.750428] schedule+0x23/0x80 [ 9908.753688] io_schedule+0xd/0x40 [ 9908.757116] __blkdev_direct_IO_simple+0x1a2/0x2a0 [ 9908.762020] ? bdget+0x110/0x110 [ 9908.765345] blkdev_direct_IO+0x34c/0x390 [ 9908.769466] ? current_time+0x11/0x60 [ 9908.773216] ? generic_update_time+0x77/0xc0 [ 9908.777578] ? current_time+0x11/0x60 [ 9908.781315] generic_file_read_iter+0x9f/0x930 [ 9908.785877] ? invalidate_mapping_pages+0x6d/0x2a0 [ 9908.790810] ? lru_lazyfree_fn+0x2d0/0x2d0 [ 9908.795037] ? release_pages+0x2a5/0x340 [ 9908.799100] __vfs_read+0xcc/0x120 [ 9908.802569] vfs_read+0x98/0x150 [ 9908.805949] SyS_read+0x4b/0xb0 [ 9908.809197] ? SyS_lseek+0x6e/0xc0 [ 9908.812703] entry_SYSCALL_64_fastpath+0x17/0x70 [ 9908.817396] RIP: 0033:0x7fa6ab981750 [ 9908.821093] RSP: 002b:00007ffe29ce8568 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 9908.828831] RAX: ffffffffffffffda RBX: 00000000019e27fe RCX: 00007fa6ab981750 [ 9908.836187] RDX: 0000000000100000 RSI: 00007fa675184200 RDI: 0000000000000003 [ 9908.843449] RBP: 0000563803f9e4b0 R08: 00005638022efde0 R09: 0000000001d42000 [ 9908.850706] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000019e27ff [ 9908.858042] R13: 00007fa61eff3010 R14: 0000000000000001 R15: 00007fa61ec4a010 with f3probe obviously stuck forever. There's no extra messages on actually physically removing the SD card or the reader. With SD cards and USB sticks having floppy-like reliability, I/O failures need to be considered a normal occurence, especially with no filesystem even mounted. In this case, the card offlines itself, but the removal doesn't complete. Meow! -- // If you believe in so-called "intellectual property", please immediately // cease using counterfeit alphabets. Instead, contact the nearest temple // of Amon, whose priests will provide you with scribal services for all // your writing needs, for Reasonable And Non-Discriminatory prices. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
