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New: uas driver hangs and causes usb reset

Bug 221340 [email protected] 2 participants 22 messages Apr 9 – Jun 28 USB

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#0 lore raw

https://bugzilla.kernel.org/show_bug.cgi?id=221340

            Bug ID: 221340
           Summary: uas driver hangs and causes usb reset
           Product: Drivers
           Version: 2.5
    Kernel Version: v6.19.11-arch1-1
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: USB
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

Created attachment 309850
--> https://bugzilla.kernel.org/attachment.cgi?id=309850&action=edit
Linux Kernel log

The driver has been isolated to uas, usb-storage driver works without issue. Happens more often the more load there is on the drive.
I am not aware of any duplicate bug reports.

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#1 lore raw

[Bug 221340] uas driver hangs and causes usb reset

https://bugzilla.kernel.org/show_bug.cgi?id=221340

Oliver Neukum ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]

--- Comment #1 from Oliver Neukum ([email protected]) --- Are all errors due to READ_10 and WRITE_10?

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#3 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

Michał Pecio ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]

--- Comment #3 from Michał Pecio ([email protected]) --- There is also Unmap/Read sub-channel in this log.

By "hang", do you mean that no I/O happens for 30 seconds or some other time before these messages show up?

BTW, if you run (as root)
echo 'func handle_tx_event +p' >/proc/dynamic_debug/control

do you see anything new appear in dmesg at this time?

That would point to some "action" at xHCI layer, though I suppose it's also possible that nothing interesting happens and the device simply never responds to some commands under some circumstances.

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#4 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #4 from [email protected] ---
(In reply to Michał Pecio from comment #3)

Quoted 4 lines

There is also Unmap/Read sub-channel in this log.

By "hang", do you mean that no I/O happens for 30 seconds or some other time before these messages show up?

yes

Quoted 9 lines

BTW, if you run (as root)
echo 'func handle_tx_event +p' >/proc/dynamic_debug/control

do you see anything new appear in dmesg at this time?

That would point to some "action" at xHCI layer, though I suppose it's also possible that nothing interesting happens and the device simply never responds to some commands under some circumstances.

I have been having difficulties reproducing the bug recently, I will let you know when it happens again

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#5 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #5 from [email protected] ---
This is what i got

[  902.725085] sd 0:0:0:0: [sda] tag#29 uas_eh_abort_handler 0 uas-tag 1
inflight: CMD OUT
[  902.725113] sd 0:0:0:0: [sda] tag#29 CDB: Write(10) 2a 00 01 46 1c 98 00 00
08 00
[  902.725243] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 7
[  902.725446] sd 0:0:0:0: [sda] tag#28 uas_eh_abort_handler 0 uas-tag 20
inflight: CMD OUT
[  902.725461] sd 0:0:0:0: [sda] tag#28 CDB: Write(10) 2a 00 01 46 1c 80 00 00
10 00
[  902.725493] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 7
[  902.725583] sd 0:0:0:0: [sda] tag#27 uas_eh_abort_handler 0 uas-tag 19
inflight: CMD OUT
[  902.725589] sd 0:0:0:0: [sda] tag#27 CDB: Write(10) 2a 00 01 46 1c 18 00 00
08 00
[  902.725610] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 7
[  902.725679] sd 0:0:0:0: [sda] tag#0 uas_eh_abort_handler 0 uas-tag 21
inflight: CMD OUT
[  902.725685] sd 0:0:0:0: [sda] tag#0 CDB: Write(10) 2a 00 01 46 1c b8 00 00
10 00
[  902.725706] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 7
[  909.893015] sd 0:0:0:0: [sda] tag#8 uas_eh_abort_handler 0 uas-tag 2
inflight: CMD IN
[  909.893033] sd 0:0:0:0: [sda] tag#8 CDB: Read(10) 28 00 00 32 00 a0 00 00 20
00
[  909.893154] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 6
[  916.037097] sd 0:0:0:0: [sda] tag#9 uas_eh_abort_handler 0 uas-tag 3
inflight: CMD OUT
[  916.037127] sd 0:0:0:0: [sda] tag#9 CDB: Unmap/Read sub-channel 42 00 00 00
00 00 00 00 18 00
[  916.037256] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 7
[  916.048101] scsi host0: uas_eh_device_reset_handler start
[  916.048197] xhci_hcd 0000:00:14.0: Stopped on Transfer TRB for slot 2 ep 1
[  916.048250] usb 2-1: cmd cmplt err -2
[  916.048385] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 4
[  916.048473] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 4
[  916.048558] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 4
[  916.048641] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 4
[  916.048721] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 4
[  916.048801] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2
ep 4
[  916.161702] usb 2-1: reset SuperSpeed USB device number 2 using xhci_hcd
[  916.174700] scsi host0: uas_eh_device_reset_handler success
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#6 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #6 from Michał Pecio ([email protected]) --- This shows UAS driver unlinking URBs related to timed out commands as they are being aborted, but I wondered if anything unusual happens 30 seconds prior, when the device stops executing SCSI commands and makes them time out.

IOW, was there anything related to uas or xhci before this snippet begins?

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#7 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #7 from [email protected] ---
(In reply to Michał Pecio from comment #6)

Quoted 5 lines

This shows UAS driver unlinking URBs related to timed out commands as they are being aborted, but I wondered if anything unusual happens 30 seconds prior, when the device stops executing SCSI commands and makes them time out.

IOW, was there anything related to uas or xhci before this snippet begins?

there are no other logs before the aborted commands get logged

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#12 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #12 from Oliver Neukum ([email protected]) --- (In reply to DaisyTheFoxxo from comment #11)

Quoted 1 line

Nevermind, It happened again. It took longer this time though

Then please try the 'm' quirk.

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#13 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #13 from [email protected] ---
(In reply to Oliver Neukum from comment #12)

Quoted 4 lines

(In reply to DaisyTheFoxxo from comment #11)

Quoted 1 line

Nevermind, It happened again. It took longer this time though

Then please try the 'm' quirk.

The problem still persists

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#14 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #14 from Oliver Neukum ([email protected]) ---
OK, it looks like there is a race condition in your device's firmware you don't see under other operating systems because they use a dirty trick for command abort.

Would you be willing to test some highly experimental kernel patches?

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#18 lore raw

[Bug 221340] uas driver hangs and causes usb reset

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #17 from [email protected] ---

Quoted 5 lines · On 26.04.26 04:54, [email protected] wrote:

https://bugzilla.kernel.org/show_bug.cgi?id=221340

--- Comment #16 from [email protected] --- Reaffirming that I would like to try out the patches mentioned

Thank you. They are about to be written. A few days please.

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