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USB MSC Endpoint is Enabled/Disabled many times before connection is successful. #91067

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USB MSC Endpoint is Enabled/Disabled many times before connection is successful.#91067
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jfischer-no
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area: USBUniversal Serial BusbugThe issue is a bug, or the PR is fixing a bugpriority: lowLow impact/importance bug
@acimonfortier

Description

@acimonfortier
acimonfortier
opened on Jun 4, 2025

Describe the bug

I am using a RAM disk MSC on USB HS on a STM32F746-disco board. I get the same behavior as in #71134 after the fix. The mass storage device works, but the added delay of the Enable/Disable cycles (~5-6 seconds in my case) is an issue. This issue wasn't present in the old stack.

From what I can see in my wireshark capture, the issue seems to be with the MODE SENSE (6) command.

Image

My modified sample code is here as a reference: https://github.com/acimonfortier/test-ram-msc-hs/tree/usb_device_next

Regression

  • This is a regression.

Steps to reproduce

Just build and run the referenced code on an STM32F746-disco board. There might be other targets affected as well. Issue #71134 was using ST BU585-IOT02A.

Relevant log output

Mount /RAM:: 0
/RAM:: bsize = 512 ; frsize = 1024 ; blocks = 6115 ; bfree = 6115
/RAM: opendir: 0
End of files
[00:00:00.063,000] <inf> main: The device is put in USB mass storage mode.

[00:00:00.443,000] <inf> usbd_msc: Enable
[00:00:00.443,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:00.443,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.467,000] <dbg> usbd_msc: scsi_cmd: SCSI INQUIRY
[00:00:01.467,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.467,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.468,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:01.468,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.468,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.468,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:01.468,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.468,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.469,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:01.469,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.469,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.469,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:01.469,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.469,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.470,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:01.470,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.470,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.470,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
[00:00:01.470,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.470,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.470,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:01.471,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.471,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.486,000] <inf> usbd_msc: Disable
[00:00:01.486,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:01.638,000] <inf> usbd_msc: Enable
[00:00:01.638,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:01.638,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.646,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:01.647,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.647,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.662,000] <inf> usbd_msc: Disable
[00:00:01.662,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:01.812,000] <inf> usbd_msc: Enable
[00:00:01.812,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:01.812,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.820,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:01.821,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.821,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.836,000] <inf> usbd_msc: Disable
[00:00:01.836,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:01.986,000] <inf> usbd_msc: Enable
[00:00:01.986,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:01.986,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:01.993,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:01.994,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:01.994,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.009,000] <inf> usbd_msc: Disable
[00:00:02.009,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:02.159,000] <inf> usbd_msc: Enable
[00:00:02.159,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:02.159,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.167,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:02.167,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:02.167,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.183,000] <inf> usbd_msc: Disable
[00:00:02.183,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:02.332,000] <inf> usbd_msc: Enable
[00:00:02.332,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:02.332,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.340,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:02.341,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:02.341,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.356,000] <inf> usbd_msc: Disable
[00:00:02.356,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:02.506,000] <inf> usbd_msc: Enable
[00:00:02.506,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:02.506,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.506,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:02.507,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:02.507,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.522,000] <inf> usbd_msc: Disable
[00:00:02.522,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:02.672,000] <inf> usbd_msc: Enable
[00:00:02.672,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:02.672,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.680,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:02.680,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:02.680,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.695,000] <inf> usbd_msc: Disable
[00:00:02.696,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:02.846,000] <inf> usbd_msc: Enable
[00:00:02.846,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:02.846,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.857,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:02.858,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:02.858,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:02.873,000] <inf> usbd_msc: Disable
[00:00:02.873,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:03.023,000] <inf> usbd_msc: Enable
[00:00:03.023,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:03.023,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.031,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:03.032,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.032,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.047,000] <inf> usbd_msc: Disable
[00:00:03.047,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:03.197,000] <inf> usbd_msc: Enable
[00:00:03.197,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:03.197,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.204,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:03.205,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.205,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.220,000] <inf> usbd_msc: Disable
[00:00:03.220,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:03.370,000] <inf> usbd_msc: Enable
[00:00:03.370,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:03.370,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.377,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:03.378,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.378,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.393,000] <inf> usbd_msc: Disable
[00:00:03.393,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:03.543,000] <inf> usbd_msc: Enable
[00:00:03.543,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:03.543,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.544,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:03.544,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.544,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.544,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:03.545,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.545,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.545,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:03.545,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.545,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.545,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:03.545,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.546,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.546,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:03.546,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.546,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.546,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_CAPACITY_10
[00:00:03.546,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.546,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.547,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
[00:00:03.547,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.547,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.547,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:03.548,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.548,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.563,000] <inf> usbd_msc: Disable
[00:00:03.563,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:03.712,000] <inf> usbd_msc: Enable
[00:00:03.712,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:03.712,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.722,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:03.722,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.722,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.737,000] <inf> usbd_msc: Disable
[00:00:03.737,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:03.888,000] <inf> usbd_msc: Enable
[00:00:03.888,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:03.888,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.896,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:03.897,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:03.897,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:03.912,000] <inf> usbd_msc: Disable
[00:00:03.913,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:04.063,000] <inf> usbd_msc: Enable
[00:00:04.063,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:04.063,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.071,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:04.071,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:04.071,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.086,000] <inf> usbd_msc: Disable
[00:00:04.086,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:04.235,000] <inf> usbd_msc: Enable
[00:00:04.235,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:04.235,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.244,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:04.244,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:04.244,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.259,000] <inf> usbd_msc: Disable
[00:00:04.259,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:04.409,000] <inf> usbd_msc: Enable
[00:00:04.409,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:04.409,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.417,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:04.417,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:04.417,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.432,000] <inf> usbd_msc: Disable
[00:00:04.432,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:04.581,000] <inf> usbd_msc: Enable
[00:00:04.581,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:04.581,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.582,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:04.582,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:04.582,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.597,000] <inf> usbd_msc: Disable
[00:00:04.597,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:04.747,000] <inf> usbd_msc: Enable
[00:00:04.747,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:04.747,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.755,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:04.755,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:04.755,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.770,000] <inf> usbd_msc: Disable
[00:00:04.770,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:04.920,000] <inf> usbd_msc: Enable
[00:00:04.921,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:04.921,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.929,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:04.929,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:04.929,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:04.944,000] <inf> usbd_msc: Disable
[00:00:04.944,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:05.094,000] <inf> usbd_msc: Enable
[00:00:05.094,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:05.094,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.102,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:05.102,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.102,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.117,000] <inf> usbd_msc: Disable
[00:00:05.117,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:05.267,000] <inf> usbd_msc: Enable
[00:00:05.267,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:05.267,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.275,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:05.275,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.275,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.290,000] <inf> usbd_msc: Disable
[00:00:05.290,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:05.440,000] <inf> usbd_msc: Enable
[00:00:05.440,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
[00:00:05.440,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.448,000] <dbg> usbd_msc: scsi_cmd: SCSI MODE_SENSE_6
[00:00:05.448,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.448,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.463,000] <inf> usbd_msc: Disable
[00:00:05.463,000] <wrn> usbd_msc: request ep 0x01, len 0 cancelled
[00:00:05.613,000] <inf> usbd_msc: Enable
[00:00:05.613,000] <inf> usbd_msc: Bulk-Only Mass Storage Reset
--- 11 messages dropped ---
[00:00:05.627,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
--- 47 messages dropped ---
[00:00:05.653,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
--- 25 messages dropped ---
[00:00:05.660,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
--- 19 messages dropped ---
[00:00:05.669,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
--- 26 messages dropped ---
[00:00:05.689,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
--- 3 messages dropped ---
[00:00:05.697,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.697,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.697,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.697,000] <dbg> usbd_msc: scsi_cmd: SCSI PREVENT_ALLOW_MEDIUM_REMOVAL
[00:00:05.697,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.698,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.699,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.699,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.699,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.699,000] <dbg> usbd_msc: scsi_cmd: SCSI PREVENT_ALLOW_MEDIUM_REMOVAL
[00:00:05.699,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.699,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.699,000] <dbg> usbd_msc: scsi_cmd: SCSI PREVENT_ALLOW_MEDIUM_REMOVAL
[00:00:05.700,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.700,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.700,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.700,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.700,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.700,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.701,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.701,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
--- 101 messages dropped ---
[00:00:05.865,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
--- 13 messages dropped ---
[00:00:05.869,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
--- 24 messages dropped ---
[00:00:05.899,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
--- 50 messages dropped ---
[00:00:05.907,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
--- 49 messages dropped ---
[00:00:05.930,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.930,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.931,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
[00:00:05.931,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.931,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.931,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
[00:00:05.932,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.932,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.932,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
[00:00:05.934,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.934,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.934,000] <dbg> usbd_msc: scsi_cmd: SCSI READ_10
[00:00:05.936,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.936,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.936,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.936,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.936,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.937,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.937,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.937,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.938,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.938,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.938,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.938,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.938,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.938,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.938,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.938,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:05.939,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:05.939,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:05.939,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT
[00:00:07.995,000] <dbg> usbd_msc: scsi_cmd: SCSI TEST_UNIT_READY
[00:00:07.995,000] <dbg> usbd_msc: msc_handle_bulk_in: CSW sent
[00:00:07.995,000] <dbg> usbd_msc: msc_queue_bulk_out_ep: Queuing OUT

Impact

Functional Limitation – Some features not working as expected, but system usable.

Environment

OS: Ubuntu 24.04.2
Zephyr commit: b7970cc

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area: USBUniversal Serial BusbugThe issue is a bug, or the PR is fixing a bugpriority: lowLow impact/importance bug

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