Regression: webcam freezing since Linux 6.15

Regression: webcam freezing since Linux 6.15

[Bart Nagel]

I regularly capture from screen and webcam while gaming. Usually it is
rock solid, and can capture for hours and hours with no problems, and have
done for hundreds of hours in total.

After a kernel update from 6.12.83 to 6.18.28 I started getting webcam
freezes. The symptom is that the picture from the camera suddenly stops
changing and will stay as a freeze frame. The camera still claims to be
active, and the capture software (tried with OBS and ffplay) seems to have
no idea anything is wrong.

I have found no reliable way to reproduce the problem other than running
the system at high load (in particular running a game; problem occurs
across multiple games) while capturing from webcam. In my tests so far it
has taken anywhere between 8 minutes and a couple of hours to fail in
these conditions. Freezes seem to be less common when the system is under
less load -- for example I have tried leaving it running overnight when
the system is under low load and seen no freeze, then I have started a
game and seen a freeze within the next hour. I have no way of knowing
whether no freeze is a pass or it's just that a failure didn't quite
happen yet so I have been testing for many hours while bisecting, often
over the course of a whole week or more.

My bisection took me to a USB branch leading up to the release of
6.15. Specifically:

ddd0172f182e pass (branch point of USB branch, "Merge tag 'tty-6.15-rc1'
             of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty")
a1b5bd45d4ee fail (merge of USB branch, "Merge tag 'usb-6.15-rc1' of
             git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb")

Digging deeper in that branch, these are my results during bisecting
(sorted into graph order):

6623c40bed7a pass (usb: storage: datafab: Use const for constant arrays)
bfa845994282 pass (usb: xhci: Complete 'error mid TD' transfers when
             handling Missed Service)
906dec15b9b3 pass* (usb: xhci: Fix isochronous Ring Underrun/Overrun event
             handling)
d0b619599e52 fail (usb: xhci: Expedite skipping missed isoch TDs on modern
             HCs)
fe1ccba52a8d fail (usb: xhci: Skip only one TD on Ring Underrun/Overrun)
d71cb7d6e1a2 fail (usb: xhci: refactor trb_in_td() to be static)
525b139fb403 fail (Merge v6.14-rc6 into usb-next)

The asterisk with 906dec15b9b3 is because it has survived 12+ hours of
recording while gaming so far but I did see the webcam freeze once at the
precise moment I made some changes in OBS. After resetting it I recorded
for another 6+ hours with no issues. The other failures have been much
faster and occurred at seemingly random times, so I'm not 100% sure here.

If I take that one as a pass, the bisection points to commit
d0b619599e52fe3e1454f7d151dedf2b194f61d8 as the first failing: "usb: xhci:
Expedite skipping missed isoch TDs on modern HCs"

At the moment of failure I have seen a huge flood of duplicates of this
message in dmesg:

    uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)

This happened during some bisection steps but not all. Regrettably I did
not record which steps produced the error and which did not. In fact, I
think during the weeks of bisecting I remember at same point following
some advice from an LLM, and it could be that in those cases where I saw
those messages I'd enabled some extra debugging of some kind, possibly via
`echo 0xff > sys/module/uvcvideo/parameters/trace`. Or perhaps those
messages were introduced at some point in the kernel changes. What I do
have recorded is seeing a steady stream of "Frame complete (EOF found)"
messages during normal operation (possibly with extra debug logging
enabled) which would suddenly cut at failure time and be replaced with
those "frame lost" messages. There was no disconnect event at or after
failure; the camera's runtime_status still shows "active" after the
failure.

If it would be useful, I could go back to failing versions and try again,
but for me it is a painfully slow process to build the kernels (I am on
NixOS and I have not yet figured out how to get ccache working so it is
building everything from scratch each time), so I'll only do this if
directed to.

The affected webcam is a Razer Kiyo Pro (1532:0e05). It is connected to a
USB 3 port and is the only device on that host controller (bus 002,
xhci_hcd, 5000M).

The most recent kernel I have tested on is 6.18.28, and the failure
happens there too.

Please let me know anything I can do to provide useful information, or if
there's anything I can try which might prevent the freezes on current
kernels.

Thanks.

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Tue, 21 Jul 2026 15:10:22 -0700, Bart Nagel wrote:
> I regularly capture from screen and webcam while gaming. Usually it is
> rock solid, and can capture for hours and hours with no problems, and
> have done for hundreds of hours in total.
> 
> After a kernel update from 6.12.83 to 6.18.28 I started getting webcam
> freezes. The symptom is that the picture from the camera suddenly
> stops changing and will stay as a freeze frame. The camera still
> claims to be active, and the capture software (tried with OBS and
> ffplay) seems to have no idea anything is wrong.
> 
> I have found no reliable way to reproduce the problem other than
> running the system at high load (in particular running a game;
> problem occurs across multiple games) while capturing from webcam. In
> my tests so far it has taken anywhere between 8 minutes and a couple
> of hours to fail in these conditions. Freezes seem to be less common
> when the system is under less load -- for example I have tried
> leaving it running overnight when the system is under low load and
> seen no freeze, then I have started a game and seen a freeze within
> the next hour. I have no way of knowing whether no freeze is a pass
> or it's just that a failure didn't quite happen yet so I have been
> testing for many hours while bisecting, often over the course of a
> whole week or more.
> 
> My bisection took me to a USB branch leading up to the release of
> 6.15. Specifically:
> 
> ddd0172f182e pass (branch point of USB branch, "Merge tag 'tty-6.15-rc1'
>              of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty")
> a1b5bd45d4ee fail (merge of USB branch, "Merge tag 'usb-6.15-rc1' of
>              git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb")
> 
> Digging deeper in that branch, these are my results during bisecting
> (sorted into graph order):
> 
> 6623c40bed7a pass (usb: storage: datafab: Use const for constant arrays)
> bfa845994282 pass (usb: xhci: Complete 'error mid TD' transfers when
>              handling Missed Service)
> 906dec15b9b3 pass* (usb: xhci: Fix isochronous Ring Underrun/Overrun event
>              handling)
> d0b619599e52 fail (usb: xhci: Expedite skipping missed isoch TDs on modern
>              HCs)
> fe1ccba52a8d fail (usb: xhci: Skip only one TD on Ring Underrun/Overrun)
> d71cb7d6e1a2 fail (usb: xhci: refactor trb_in_td() to be static)
> 525b139fb403 fail (Merge v6.14-rc6 into usb-next)
> 
> The asterisk with 906dec15b9b3 is because it has survived 12+ hours of
> recording while gaming so far but I did see the webcam freeze once at
> the precise moment I made some changes in OBS. After resetting it I
> recorded for another 6+ hours with no issues. The other failures have
> been much faster and occurred at seemingly random times, so I'm not
> 100% sure here.

It might be that you have two different problems. Another user of Razer
Kiyo Pro reported that tweaking camera settings causes some failures,
so this may be unrelated to your main issue.

> If I take that one as a pass, the bisection points to commit
> d0b619599e52fe3e1454f7d151dedf2b194f61d8 as the first failing: "usb: xhci:
> Expedite skipping missed isoch TDs on modern HCs"

That's what it seems and it's weird.

> At the moment of failure I have seen a huge flood of duplicates of this
> message in dmesg:
> 
>     uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
> 
> This happened during some bisection steps but not all. Regrettably I did
> not record which steps produced the error and which did not. In fact, I
> think during the weeks of bisecting I remember at same point following
> some advice from an LLM, and it could be that in those cases where I saw
> those messages I'd enabled some extra debugging of some kind, possibly via
> `echo 0xff > sys/module/uvcvideo/parameters/trace`.

Yes, these are debug messages from uvcvideo. They indicate that isoc
transfers completed with -EXDEV status, which is due to Missed Service
Error events from the HW or due to being "skipped".

I don't see any way xhci-hcd could end up skipping forever and never
clearing the skip flag. And it's equally unclear why the HW would begin
generating MSEs forever because we handle them faster than in the past.

What's the affected xHCI controller? You can find its PCI address with
cat /sys/bus/usb/devices/usb2/serial
and then use lspci. Make sure that the camera is stil on bus 2 - these
numbers sometimes change after reboot.


I wonder what happens when you enable some xhci-hcd debugging too?

echo 'func handle_tx_event +p' >/proc/dynamic_debug/control

You will probably see Missed Service Errors being logged occasionally,
likely both on "good" and "bad" kernels. And it seems that good ones
will recover every time, but not sure about bad ones. Does the first
MSE break things forever? Or does it take a few? Could you post a log
when it breaks? Caution: you may see thousands of lines per second.

> The most recent kernel I have tested on is 6.18.28, and the failure
> happens there too.

Some recent 7.x may be worth trying too, if possible, though I won't be
surprised if it's the same as 6.18.

Regards,
Michal

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-23 00:22:56 +0200, Michal Pecio wrote:
> On Tue, 21 Jul 2026 15:10:22 -0700, Bart Nagel wrote:
> > I regularly capture from screen and webcam while gaming. Usually it is
> > rock solid, and can capture for hours and hours with no problems, and
> > have done for hundreds of hours in total.
> > 
> > After a kernel update from 6.12.83 to 6.18.28 I started getting webcam
> > freezes. The symptom is that the picture from the camera suddenly
> > stops changing and will stay as a freeze frame. The camera still
> > claims to be active, and the capture software (tried with OBS and
> > ffplay) seems to have no idea anything is wrong.
> > 
> > I have found no reliable way to reproduce the problem other than
> > running the system at high load (in particular running a game;
> > problem occurs across multiple games) while capturing from webcam. In
> > my tests so far it has taken anywhere between 8 minutes and a couple
> > of hours to fail in these conditions. Freezes seem to be less common
> > when the system is under less load -- for example I have tried
> > leaving it running overnight when the system is under low load and
> > seen no freeze, then I have started a game and seen a freeze within
> > the next hour. I have no way of knowing whether no freeze is a pass
> > or it's just that a failure didn't quite happen yet so I have been
> > testing for many hours while bisecting, often over the course of a
> > whole week or more.
> > 
> > My bisection took me to a USB branch leading up to the release of
> > 6.15. Specifically:
> > 
> > ddd0172f182e pass (branch point of USB branch, "Merge tag 'tty-6.15-rc1'
> >              of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty")
> > a1b5bd45d4ee fail (merge of USB branch, "Merge tag 'usb-6.15-rc1' of
> >              git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb")
> > 
> > Digging deeper in that branch, these are my results during bisecting
> > (sorted into graph order):
> > 
> > 6623c40bed7a pass (usb: storage: datafab: Use const for constant arrays)
> > bfa845994282 pass (usb: xhci: Complete 'error mid TD' transfers when
> >              handling Missed Service)
> > 906dec15b9b3 pass* (usb: xhci: Fix isochronous Ring Underrun/Overrun event
> >              handling)
> > d0b619599e52 fail (usb: xhci: Expedite skipping missed isoch TDs on modern
> >              HCs)
> > fe1ccba52a8d fail (usb: xhci: Skip only one TD on Ring Underrun/Overrun)
> > d71cb7d6e1a2 fail (usb: xhci: refactor trb_in_td() to be static)
> > 525b139fb403 fail (Merge v6.14-rc6 into usb-next)
> > 
> > The asterisk with 906dec15b9b3 is because it has survived 12+ hours of
> > recording while gaming so far but I did see the webcam freeze once at
> > the precise moment I made some changes in OBS. After resetting it I
> > recorded for another 6+ hours with no issues. The other failures have
> > been much faster and occurred at seemingly random times, so I'm not
> > 100% sure here.
> 
> It might be that you have two different problems. Another user of Razer
> Kiyo Pro reported that tweaking camera settings causes some failures,
> so this may be unrelated to your main issue.
> 
> > If I take that one as a pass, the bisection points to commit
> > d0b619599e52fe3e1454f7d151dedf2b194f61d8 as the first failing: "usb: xhci:
> > Expedite skipping missed isoch TDs on modern HCs"
> 
> That's what it seems and it's weird.
> 
> > At the moment of failure I have seen a huge flood of duplicates of this
> > message in dmesg:
> > 
> >     uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
> > 
> > This happened during some bisection steps but not all. Regrettably I did
> > not record which steps produced the error and which did not. In fact, I
> > think during the weeks of bisecting I remember at same point following
> > some advice from an LLM, and it could be that in those cases where I saw
> > those messages I'd enabled some extra debugging of some kind, possibly via
> > `echo 0xff > sys/module/uvcvideo/parameters/trace`.
> 
> Yes, these are debug messages from uvcvideo. They indicate that isoc
> transfers completed with -EXDEV status, which is due to Missed Service
> Error events from the HW or due to being "skipped".
> 
> I don't see any way xhci-hcd could end up skipping forever and never
> clearing the skip flag. And it's equally unclear why the HW would begin
> generating MSEs forever because we handle them faster than in the past.
> 
> What's the affected xHCI controller? You can find its PCI address with
> cat /sys/bus/usb/devices/usb2/serial
> and then use lspci. Make sure that the camera is stil on bus 2 - these
> numbers sometimes change after reboot.

Confirmed still on bus 2. That command gives

    0000:00:14.0

> I wonder what happens when you enable some xhci-hcd debugging too?
> 
> echo 'func handle_tx_event +p' >/proc/dynamic_debug/control
> 
> You will probably see Missed Service Errors being logged occasionally,
> likely both on "good" and "bad" kernels. And it seems that good ones
> will recover every time, but not sure about bad ones. Does the first
> MSE break things forever? Or does it take a few? Could you post a log
> when it breaks? Caution: you may see thousands of lines per second.

I'm still on the asterisked kernel from the list above at the moment
(appears to be "good"). I tried enabling this and I do indeed get a
few of those errors and they seem to recover. This is what I have so
far after having set it about 5 minutes ago:

    Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
    Jul 22 16:14:52 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
    Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
    Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
    Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.

> > The most recent kernel I have tested on is 6.18.28, and the failure
> > happens there too.
> 
> Some recent 7.x may be worth trying too, if possible, though I won't be
> surprised if it's the same as 6.18.

I will see if I can get a 7.x kernel installed and hopefully it's not
beyond me. At the very least, I'll get back to the latest kernel in
nixos-unstable (which perhaps is 7.x by now anyway). Then I'll enable
the extra debugging as you directed and see what I get in the logs
when it fails. Would the uvcvideo logging be useful or should I skip
that part?

Thank you.

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Wed, 22 Jul 2026 16:23:28 -0700, Bart Nagel wrote:
> > You will probably see Missed Service Errors being logged
> > occasionally, likely both on "good" and "bad" kernels. And it seems
> > that good ones will recover every time, but not sure about bad
> > ones. Does the first MSE break things forever? Or does it take a
> > few? Could you post a log when it breaks? Caution: you may see
> > thousands of lines per second.  
> 
> I'm still on the asterisked kernel from the list above at the moment
> (appears to be "good"). I tried enabling this and I do indeed get a
> few of those errors and they seem to recover. This is what I have so
> far after having set it about 5 minutes ago:
> 
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
>     Jul 22 16:14:52 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
>     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.

Please use 'journalctl -o short-precise' or simply 'dmesg' next time.

It seems these errors are happening in bursts, sporadically, but much
more often than your failure rate, so 'bad' kernels handle most of them
fine and only occasionally something goes wrong.

Per your other email, affected hardware is Intel 100 series chipset
(8086:a12f ?) USB 3.0 controller. If you run 'dmesg | grep hci.version'
I suppose you will see version 0x100, so it's somewhat old HW.

Maybe don't bother with newer kernels for now, but simply checkout
d0b619599e52 and also add this patch. Recompilation should be fast.
Then run it to failure and post the log. You may want to run
'dmesg -W | tee logfile.txt' just in case, because the resulting flood
may overwrite initial messages in the kernel log buffer and I'm not
sure how much extra buffering journald maintains.

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 24fde00fbb3f..57b326d9c99c 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2779,8 +2786,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		 */
 		ep->skip = true;
 		xhci_dbg(xhci,
-			 "Miss service interval error for slot %u ep %u, set skip flag%s\n",
-			 slot_id, ep_index, ep_trb_dma ? ", skip now" : "");
+			 "Miss service interval error for slot %u ep %u ep_trb_dma %llx, set skip flag\n",
+			 slot_id, ep_index, ep_trb_dma);
 		break;
 	case COMP_NO_PING_RESPONSE_ERROR:
 		ep->skip = true;

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

Please use "Reply to all" and be careful to preserve Cc's, particularly
maintainers of the affected driver. Re-adding Mathias Nyman.

On Wed, 22 Jul 2026 16:23:28 -0700, Bart Nagel wrote:
> > You will probably see Missed Service Errors being logged
> > occasionally, likely both on "good" and "bad" kernels. And it seems
> > that good ones will recover every time, but not sure about bad
> > ones. Does the first MSE break things forever? Or does it take a
> > few? Could you post a log when it breaks? Caution: you may see
> > thousands of lines per second.  
> 
> I'm still on the asterisked kernel from the list above at the moment
> (appears to be "good"). I tried enabling this and I do indeed get a
> few of those errors and they seem to recover. This is what I have so
> far after having set it about 5 minutes ago:
> 
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
>     Jul 22 16:14:52 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
>     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
>     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.

Please use 'journalctl -o short-precise' or simply 'dmesg' next time.

It seems these errors are happening in bursts, sporadically, but much
more often than your failure rate, so 'bad' kernels handle most of them
fine and only occasionally something goes wrong.

Per your other email, affected hardware is Intel 100 series chipset
(8086:a12f ?) USB 3.0 controller. If you run 'dmesg | grep hci.version'
I suppose you will see version 0x100, so it's somewhat old HW.

Maybe don't bother with newer kernels for now, but simply checkout
d0b619599e52 and also add this patch. Recompilation should be fast.
Then run it to failure and post the log. You may want to run
'dmesg -W | tee logfile.txt' just in case, because the resulting flood
may overwrite initial messages in the kernel log buffer and I'm not
sure how much extra buffering journald maintains.

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 24fde00fbb3f..57b326d9c99c 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2779,8 +2786,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		 */
 		ep->skip = true;
 		xhci_dbg(xhci,
-			 "Miss service interval error for slot %u ep %u, set skip flag%s\n",
-			 slot_id, ep_index, ep_trb_dma ? ", skip now" : "");
+			 "Miss service interval error for slot %u ep %u ep_trb_dma %llx, set skip flag\n",
+			 slot_id, ep_index, ep_trb_dma);
 		break;
 	case COMP_NO_PING_RESPONSE_ERROR:
 		ep->skip = true;

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-23 08:14:40 +0200, Michal Pecio wrote:
> On Wed, 22 Jul 2026 16:23:28 -0700, Bart Nagel wrote:
> > > You will probably see Missed Service Errors being logged
> > > occasionally, likely both on "good" and "bad" kernels. And it seems
> > > that good ones will recover every time, but not sure about bad
> > > ones. Does the first MSE break things forever? Or does it take a
> > > few? Could you post a log when it breaks? Caution: you may see
> > > thousands of lines per second.  
> > 
> > I'm still on the asterisked kernel from the list above at the moment
> > (appears to be "good"). I tried enabling this and I do indeed get a
> > few of those errors and they seem to recover. This is what I have so
> > far after having set it about 5 minutes ago:
> > 
> >     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:14:07 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
> >     Jul 22 16:14:52 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:14:53 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
> >     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:16:06 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
> >     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Miss service interval error for slot 18 ep 2, set skip flag
> >     Jul 22 16:17:33 spiral kernel: xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 18 ep 2.
> 
> Please use 'journalctl -o short-precise' or simply 'dmesg' next time.

Will do.

> It seems these errors are happening in bursts, sporadically, but much
> more often than your failure rate, so 'bad' kernels handle most of them
> fine and only occasionally something goes wrong.
> 
> Per your other email, affected hardware is Intel 100 series chipset
> (8086:a12f ?) USB 3.0 controller. If you run 'dmesg | grep hci.version'
> I suppose you will see version 0x100, so it's somewhat old HW.

It is indeed old hardware, but still capable enough for my needs.
I get this:

    [    0.391721] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x0000000001109810
    [    0.455073] xhci_hcd 0000:05:00.0: hcc params 0x0200eec0 hci version 0x110 quirks 0x0000000000800010

I suppose the other is another controller.

> Maybe don't bother with newer kernels for now, but simply checkout
> d0b619599e52 and also add this patch. Recompilation should be fast.
> Then run it to failure and post the log. You may want to run
> 'dmesg -W | tee logfile.txt' just in case, because the resulting flood
> may overwrite initial messages in the kernel log buffer and I'm not
> sure how much extra buffering journald maintains.

OK. Checked out that commit, applied the patch, and it's compiling.

(I haven't been able to figure out how to compile in-tree and then
have Nixos accept and install its outputs, so I've been compiling via
Nix's toolchain, since it just works and I can point it to a commit
ref on my clone of the repo, but it builds from scratch each time. I'm
sure it's possible to get it faster, just haven't figured it out. Last
time I tried, I spent longer tinkering than a full compilation cycle
would take before giving up.)

I'll report back with logs when the time comes.

At 2026-07-23 08:19:42 +0200, Michal Pecio wrote:
> Please use "Reply to all" and be careful to preserve Cc's, particularly
> maintainers of the affected driver. Re-adding Mathias Nyman.

Oh, sorry! I actually did that intentionally, since it was you
replying and not Mathias, in an attempt to not bother an extra person.
I see now that was a misstep. I'm new to the kernel mailing list ways.

Thanks again.

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-23 14:02:16 -0700, Bart Nagel wrote:
> At 2026-07-23 08:14:40 +0200, Michal Pecio wrote:
> > Maybe don't bother with newer kernels for now, but simply checkout
> > d0b619599e52 and also add this patch. Recompilation should be fast.
> > Then run it to failure and post the log. You may want to run
> > 'dmesg -W | tee logfile.txt' just in case, because the resulting flood
> > may overwrite initial messages in the kernel log buffer and I'm not
> > sure how much extra buffering journald maintains.
> 
> OK. Checked out that commit, applied the patch, and it's compiling.
> 
...
> 
> I'll report back with logs when the time comes.

And here I am.

I found that I can reproduce the freeze much, much faster if I run
`stress --cpu $(nproc)` at the same time. Not sure why I didn't think
of this earlier, given that I knew it happened quicker when running a
game.

This time it froze within seconds.

Here's an abridged version of the log, with some extra annotation
which I hope isn't entirely useless. It is of course possible that I
have not picked up on some important details. So the full log is at
https://termbin.com/ro416 to which I've added just one annotation to
show what was visible in the last-captured frame before the camera
froze.

Nothing is output until I start OBS, and then it begins like this:

    [  169.257158] usb 2-6.1: uvc_v4l2_open
    [  169.407072] usb 2-6.1: Trying format 0x56595559 (YUYV): 1920x1080
    [  169.407078] usb 2-6.1: Using default frame interval 16666.6 us (60.0 fps)
    [  169.407675] usb 2-6.1: Trying format 0x56595559 (YUYV): 1920x1080
    [  169.407678] usb 2-6.1: Using default frame interval 16666.6 us (60.0 fps)
    [  169.409320] usb 2-6.1: uvc_v4l2_mmap
    [  169.409496] usb 2-6.1: uvc_v4l2_mmap
    [  169.409661] usb 2-6.1: uvc_v4l2_mmap
    [  169.409825] usb 2-6.1: uvc_v4l2_mmap
    [  169.660301] usb 2-6.1: uvc_v4l2_poll
    [  169.744695] usb 2-6.1: uvc_v4l2_poll
    [  169.744787] usb 2-6.1: uvc_v4l2_poll
    [  169.760428] usb 2-6.1: Frame complete (EOF found)
    [  169.761246] usb 2-6.1: uvc_v4l2_poll
    [  169.763493] usb 2-6.1: uvc_v4l2_poll
    [  169.776344] usb 2-6.1: Frame complete (EOF found)
    [  169.780296] usb 2-6.1: uvc_v4l2_poll
    [  169.782560] usb 2-6.1: uvc_v4l2_poll
    [  169.812347] usb 2-6.1: Frame complete (EOF found)
    [  169.813304] usb 2-6.1: uvc_v4l2_poll
    [  169.813631] usb 2-6.1: uvc_v4l2_poll
    [  169.828357] usb 2-6.1: Frame complete (EOF found)
    [  169.828469] usb 2-6.1: uvc_v4l2_poll
    [  169.828825] usb 2-6.1: uvc_v4l2_poll

That pattern of "poll" and "frame complete" continues until:

    [  174.692343] usb 2-6.1: Frame complete (EOF found)
    [  174.692469] usb 2-6.1: uvc_v4l2_poll
    [  174.692814] usb 2-6.1: uvc_v4l2_poll
    [  174.709692] xhci_hcd 0000:00:14.0: Transfer error for slot 6 ep 2 on endpoint
    [  174.709815] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709818] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709820] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709822] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709823] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709825] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709827] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709828] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709830] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709832] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709833] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709835] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709837] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709838] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709840] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709842] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709843] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709845] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709846] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709848] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709850] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709851] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709853] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709855] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709856] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709858] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709860] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709861] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.709863] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  174.710069] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
    [  174.710086] usb 2-6.1: USB isochronous frame lost (-71)
    [  174.710088] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710089] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710091] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710092] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710093] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710095] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710096] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710097] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710099] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710100] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710101] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710103] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710104] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710105] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710107] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710108] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.710109] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712405] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712409] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712410] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712411] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712413] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712414] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712415] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712417] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712418] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712420] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712421] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.712422] usb 2-6.1: USB isochronous frame lost (-18)
    [  174.716415] usb 2-6.1: Frame complete (EOF found)
    [  174.728415] usb 2-6.1: uvc_v4l2_poll
    [  174.728438] usb 2-6.1: uvc_v4l2_poll

But at this point I think OBS is still in the process of starting up,
and the picture is still fine.

It then settles, though there are still some shorter bursts of "miss
service interval" and "clear skip flag" and "isochronous frame lost"
here and there.

The last captured frame has nothing interesting visible, just more
"frame complete" and "uvc_v4l2_poll".

After the freeze there are a few more "frame complete" messages, then

    [  180.701300] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63e920, set skip flag
    [  180.701315] xhci_hcd 0000:00:14.0: All TDs skipped for slot 6 ep 2. Clear skip flag.
    [  180.701326] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701328] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701330] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701331] usb 2-6.1: USB isochronous frame lost (-18)

And that frame lost message is repeated many many times. In the
middle:

    [  180.701418] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701419] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701420] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701423] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  180.701424] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag
    [  180.701428] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701429] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701429] usb 2-6.1: USB isochronous frame lost (-18)

And then:

    [  180.701552] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701553] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701684] xhci_hcd 0000:00:14.0: All TDs skipped for slot 6 ep 2. Clear skip flag.
    [  180.701688] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701690] usb 2-6.1: USB isochronous frame lost (-18)

And:

    [  180.701794] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701795] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701797] xhci_hcd 0000:00:14.0: Overrun event on slot 6 ep 2
    [  180.701801] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701803] usb 2-6.1: USB isochronous frame lost (-18)

Finally, the "frame lost" messages come to an end:

    [  180.701916] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701917] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701919] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701920] xhci_hcd 0000:00:14.0: Overrun event on slot 6 ep 2
    [  180.701924] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701925] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701927] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701928] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.701929] usb 2-6.1: USB isochronous frame lost (-18)
    [  180.702046] xhci_hcd 0000:00:14.0: Overrun event on slot 6 ep 2
    [  180.780616] usb 2-6.1: uvc_v4l2_poll
    [  180.780690] usb 2-6.1: uvc_v4l2_poll

And then it's just a lot of poll messages.

I hope this is useful.

I found that nixos-unstable is still on 6.x but that I am able to
quite easily move to the cachyos kernel which is labelled
7.1.4-cachyos. Before compiling d0b619599e52 with your patch and
capturing the log above I did test on 7.1.4-cachyos and it did freeze
there too. The log in that case looks very similar, except that there
are additionally a *ton* of "xhci_hcd 0000:00:14.0: Spurious event dma
0x0000000492b26580, comp_code 13 after 13" messages, with different
dma numbers on each. I don't know if this is a clue.

Thanks again.

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Thu, 23 Jul 2026 15:45:25 -0700, Bart Nagel wrote:
> I found that I can reproduce the freeze much, much faster if I run
> `stress --cpu $(nproc)` at the same time.

Great news, good work.

What happens differently in absence of CPU load?
- no Missed Service Errors anymore
- ep_trb_dma (see below) becomes always zero
- no obvious change, somehow the kernel gets more lucky

>     [  174.709692] xhci_hcd 0000:00:14.0: Transfer error for slot 6 ep 2 on endpoint
>     [  174.709815] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 0, set skip flag

That's kinda normal. Errors sometimes happen, isochronous doesn't
recover from them, SW must deal with it. Transfer error becomes -71
status, Missed Service becomes -18. Later uvcvideo logs this again.

ep_trb_dma should point to the failed transfer, but xHCI 1.0 spec
allows it to be zero for Missed Service Error. We deal with that too.

But oddly, on your HW it sometimes isn't zero. The commit you bisected
assumes that non-zero numbers are valid pointers and this seems to work
more or less correctly, until it doesn't:

[  174.818444] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 108165b90, set skip flag
[  174.818452] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  176.818812] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 108165dd0, set skip flag
[  176.818817] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  177.517933] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63ec30, set skip flag
[  177.517937] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  177.586809] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63e020, set skip flag
[  177.586815] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  177.636060] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63e530, set skip flag
[  177.636065] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  177.817933] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63ee10, set skip flag
[  177.817937] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  179.934449] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63e7b0, set skip flag
[  179.934453] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 6 ep 2.
--
[  180.701300] xhci_hcd 0000:00:14.0: Miss service interval error for slot 6 ep 2 ep_trb_dma 10a63e920, set skip flag
[  180.701315] xhci_hcd 0000:00:14.0: All TDs skipped for slot 6 ep 2. Clear skip flag.

For some reason the driver thought that all TDs were missed and
returned them with -18 status; we see a burst of those logs from
uvcvideo moment later. Then I suspect uvcvideo resubmitted enough
URBs to go around the whole ring and overwrite pending transfers
with opposite cycle bit, which caused the HW to stop and produce
a Ring Overrun event.

The root cause is bogus ep_trb_dma from the HW or some kernel bug.

Maybe we could get enough info from debugfs to see what happened. If
possible, disconnect other USB devices from bus 1 and 2, trigger the
bug again, and *before* stopping video recording, run:

zip -r debugfs.zip /sys/kernel/debug/usb/xhci/0000:00:14.0

This requires debugfs to be enabled in the kernel and mounted. And zip
will print some warnings, but generate a valid archive. If you need to
use tar instead, you must first copy the directory, then archive it.

Email the zip (should be under 1MB) and corresponding dmesg as before.

Regards,
Michal

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

[-- Attachment #1: Type: text/plain, Size: 3054 bytes --]

At 2026-07-25 11:59:56 +0200, Michal Pecio wrote:
> On Thu, 23 Jul 2026 15:45:25 -0700, Bart Nagel wrote:
> > I found that I can reproduce the freeze much, much faster if I run
> > `stress --cpu $(nproc)` at the same time.
> 
> Great news, good work.
> 
> What happens differently in absence of CPU load?
> - no Missed Service Errors anymore
> - ep_trb_dma (see below) becomes always zero
> - no obvious change, somehow the kernel gets more lucky

The log is a whole lot quieter. With ffplay it appears that no
uvc_v4l2_poll messages are produced. I ran for a few minutes and was
seeing no missed service errors at all. I can show the whole log from
that run in just a few lines once I strip the timestamps and run
through uniq -c:

       1 usb 2-6.1: uvc_v4l2_open
       1 usb 2-6.1: Trying format 0x56595559 (YUYV): 1920x1080
       1 usb 2-6.1: Using default frame interval 16666.6 us (60.0 fps)
       1 usb 2-6.1: Setting frame interval to 1/60 (166666)
      32 usb 2-6.1: uvc_v4l2_mmap
    7619 usb 2-6.1: Frame complete (EOF found)
       1 usb 2-6.1: uvc_v4l2_release
       5 xhci_hcd 0000:00:14.0: Stopped on Transfer TRB for slot 6 ep 2
       1 xhci_hcd 0000:00:14.0: Stopped on Transfer TRB for slot 6 ep 10
       1 xhci_hcd 0000:00:14.0: Stopped on Transfer TRB for slot 2 ep 2
       1 xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 2 ep 0

...
> But oddly, on your HW it sometimes isn't zero. The commit you bisected
> assumes that non-zero numbers are valid pointers and this seems to work
> more or less correctly, until it doesn't:
> 
...
> 
> For some reason the driver thought that all TDs were missed and
> returned them with -18 status; we see a burst of those logs from
> uvcvideo moment later. Then I suspect uvcvideo resubmitted enough
> URBs to go around the whole ring and overwrite pending transfers
> with opposite cycle bit, which caused the HW to stop and produce
> a Ring Overrun event.
> 
> The root cause is bogus ep_trb_dma from the HW or some kernel bug.
> 
> Maybe we could get enough info from debugfs to see what happened. If
> possible, disconnect other USB devices from bus 1 and 2, trigger the
> bug again, and *before* stopping video recording, run:
> 
> zip -r debugfs.zip /sys/kernel/debug/usb/xhci/0000:00:14.0
> 
> This requires debugfs to be enabled in the kernel and mounted. And zip
> will print some warnings, but generate a valid archive. If you need to
> use tar instead, you must first copy the directory, then archive it.
> 
> Email the zip (should be under 1MB) and corresponding dmesg as before.

OK, I've done this. I disconnected all USB devices but that webcam and
my keyboard, and the hubs those two are connected through (otherwise
would be a pain but let me know if it would be helpful).

For whatever reason it took longer to get a failure this time, even
with the CPU stressor running. About 12 minutes. To my eye the kernel
log looks very similar to last time. Since it ran for much longer it's
much larger and so I've gzipped it. Debugfs zip attached too.

Thank you.

[-- Attachment #2: dmesg-highload.txt.gz --]
[-- Type: application/gzip, Size: 611386 bytes --]

[-- Attachment #3: debugfs-freeze.zip --]
[-- Type: application/zip, Size: 499616 bytes --]

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

[-- Attachment #1: Type: text/plain, Size: 1791 bytes --]

On Mon, 27 Jul 2026 13:23:48 -0700, Bart Nagel wrote:
> At 2026-07-25 11:59:56 +0200, Michal Pecio wrote:
> > What happens differently in absence of CPU load?
> > - no Missed Service Errors anymore
> > - ep_trb_dma (see below) becomes always zero
> > - no obvious change, somehow the kernel gets more lucky  
> 
> The log is a whole lot quieter. With ffplay it appears that no
> uvc_v4l2_poll messages are produced. I ran for a few minutes and was
> seeing no missed service errors at all.

OK, no MSEs so no failures, that's obvious.

> OK, I've done this. I disconnected all USB devices but that webcam and
> my keyboard, and the hubs those two are connected through (otherwise
> would be a pain but let me know if it would be helpful).

Thanks, this dump is good enough, no noise from other devices.

Let's see if the attached patch fixes it, it will print BAILING OUT each
time the failure would otherwise happen and it should prevent failures.

I think the problem occurs when a Short Packet event is generated for
the first TRB of a two-TRB TD. The TD is completed and later a Missed
Service Error event erronously points to the second TRB of the same TD.
The driver can't identify this TD (it's gone) and goes nuts.

I can't explain why we aren't getting a second Short Packet for the
second TRB before we get MSE. Your HW does generate Short Packet for
both TRBs in other similar cases visible in this event ring dump.

I suspect that all those non-zero ep_trb_dma in MSE events are more or
less bogus on your hardware, although obviously not all of them are
instances of the aforementioned bug, because then the driver would
malfunction on every such event, and we have seen that it doesn't. But
let's start with testing if my guess is anywhere close to correct...

Regards,
Michal

[-- Attachment #2: webcam-crash-debug-fix.patch --]
[-- Type: text/x-patch, Size: 2942 bytes --]

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 24fde00fbb3f..89adf76e43be 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2683,6 +2683,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	if (!ep_ring)
 		return handle_transferless_tx_event(xhci, ep, trb_comp_code);
 
+	td = list_first_entry_or_null(&ep_ring->td_list, struct xhci_td, td_list);
+
 	/* Look for common error cases */
 	switch (trb_comp_code) {
 	/* Skip codes that require special handling depending on
@@ -2779,8 +2781,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		 */
 		ep->skip = true;
 		xhci_dbg(xhci,
-			 "Miss service interval error for slot %u ep %u, set skip flag%s\n",
-			 slot_id, ep_index, ep_trb_dma ? ", skip now" : "");
+			 "Miss service interval error for slot %u ep %u ep_trb_dma %llx td_dma %llx, set skip flag\n",
+			 slot_id, ep_index, ep_trb_dma, td ? xhci_trb_virt_to_dma(td->start_seg, td->start_trb) : ~0);
 		break;
 	case COMP_NO_PING_RESPONSE_ERROR:
 		ep->skip = true;
@@ -2822,13 +2824,22 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	 * We wait for the final IOC event, but if we get an event
 	 * anywhere outside this TD, just give it back already.
 	 */
-	td = list_first_entry_or_null(&ep_ring->td_list, struct xhci_td, td_list);
-
 	if (td && td->error_mid_td && !trb_in_td(td, ep_trb_dma)) {
 		xhci_dbg(xhci, "Missing TD completion event after mid TD error\n");
 		xhci_dequeue_td(xhci, td, ep_ring, td->status);
 	}
 
+	if (ep_ring->old_trb_comp_code == COMP_SHORT_PACKET && ep_trb_dma == ep_ring->old_td_end_dma) {
+		if (trb_comp_code != COMP_SHORT_PACKET)
+			xhci_info(xhci, "Event %d for old TD end DMA %llx after %lldus\n",
+					trb_comp_code, ep_trb_dma,
+					(ktime_get_ns() - ep_ring->old_time_ns) / 1000);
+		if (trb_comp_code == COMP_MISSED_SERVICE_ERROR) {
+			xhci_err(xhci, "BAILING OUT\n");
+			return 0;
+		}
+	}
+
 	/* If the TRB pointer is NULL, missed TDs will be skipped on the next event */
 	if (trb_comp_code == COMP_MISSED_SERVICE_ERROR && !ep_trb_dma)
 		return 0;
@@ -2937,6 +2948,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	} while (ep->skip);
 
 	ep_ring->old_trb_comp_code = trb_comp_code;
+	ep_ring->old_td_end_dma = xhci_trb_virt_to_dma(td->end_seg, td->end_trb);
+	ep_ring->old_time_ns = ktime_get_ns();
 
 	/* Get out if a TD was queued at enqueue after the xrun occurred */
 	if (ring_xrun_event)
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 3ce71211ee6f..b508904b34ba 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1363,6 +1363,8 @@ struct xhci_ring {
 	union  xhci_trb		*dequeue;
 	struct xhci_segment	*deq_seg;
 	struct list_head	td_list;
+	dma_addr_t		old_td_end_dma;
+	u64			old_time_ns;
 	/*
 	 * Write the cycle state into the TRB cycle field to give ownership of
 	 * the TRB to the host controller (if we are the producer), or to check

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-28 00:31:31 +0200, Michal Pecio wrote:
> Let's see if the attached patch fixes it, it will print BAILING OUT each
> time the failure would otherwise happen and it should prevent failures.
> 
> I think the problem occurs when a Short Packet event is generated for
> the first TRB of a two-TRB TD. The TD is completed and later a Missed
> Service Error event erronously points to the second TRB of the same TD.
> The driver can't identify this TD (it's gone) and goes nuts.
> 
> I can't explain why we aren't getting a second Short Packet for the
> second TRB before we get MSE. Your HW does generate Short Packet for
> both TRBs in other similar cases visible in this event ring dump.
> 
> I suspect that all those non-zero ep_trb_dma in MSE events are more or
> less bogus on your hardware, although obviously not all of them are
> instances of the aforementioned bug, because then the driver would
> malfunction on every such event, and we have seen that it doesn't. But
> let's start with testing if my guess is anywhere close to correct...

I think it is!

I didn't seem to have the "before" blobs your patch indicates in my
repo and it didn't want to apply where I was (at the first failing
commit) so I went to 6.18.28 and applied your patch there.

I just tested for 8 or 9 minutes with heavy load and got the "bailing
out" message 5 times, but capture was still continuing.

The log around the first "bailing out" is like this (it's more noisy
on these later commits; lots of "spurious event" messages):

    [  340.406954] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  340.420612] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7110, comp_code 13 after 13
    [  340.420860] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7140, comp_code 13 after 13
    [  340.421110] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7170, comp_code 13 after 13
    [  340.421360] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea71a0, comp_code 13 after 13
    [  340.422956] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  340.437113] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7d70, comp_code 13 after 13
    [  340.437359] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7da0, comp_code 13 after 13
    [  340.437610] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7dd0, comp_code 13 after 13
    [  340.437860] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7e00, comp_code 13 after 13
    [  340.438110] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7e30, comp_code 13 after 13
    [  340.438359] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7e60, comp_code 13 after 13
    [  340.438609] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7e90, comp_code 13 after 13
    [  340.438861] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7ec0, comp_code 13 after 13
    [  340.438881] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  340.443735] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 10aea6260 td_dma 10aea6270, set skip flag
    [  340.443740] xhci_hcd 0000:00:14.0: Event 23 for old TD end DMA 10aea6260 after 7us
    [  340.443743] xhci_hcd 0000:00:14.0: BAILING OUT
    [  340.443858] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6270, set skip flag
    [  340.443861] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6270, set skip flag
    [  340.444110] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 7 ep 2.
    [  340.444113] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea62c0, comp_code 13 after 13
    [  340.444360] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea62f0, comp_code 13 after 13
    [  340.444609] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6320, comp_code 13 after 13
    [  340.444860] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6350, comp_code 13 after 13
    [  340.446954] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  340.446957] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  340.454953] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  340.455109] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b00, comp_code 13 after 13
    [  340.455359] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b30, comp_code 13 after 13
    [  340.455609] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b60, comp_code 13 after 13
    [  340.455860] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b90, comp_code 13 after 13
    [  340.471423] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7740, comp_code 13 after 13
    [  340.471609] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7770, comp_code 13 after 13
    [  340.471860] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea77a0, comp_code 13 after 13
    [  340.472110] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea77d0, comp_code 13 after 13
    [  340.472360] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7800, comp_code 13 after 13
    [  340.474951] uvcvideo 2-6.1:1.0: Frame complete (EOF found)

Missed service interval messages do not always lead to a "bailing out"
message, like this example:

    [  183.316597] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  183.316821] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7dd0, comp_code 13 after 13
    [  183.317073] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7e00, comp_code 13 after 13
    [  183.331200] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6880, set skip flag
    [  183.331206] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6880, set skip flag
    [  183.331208] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6880, set skip flag
    [  183.331447] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 7 ep 2.
    [  183.331449] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea68f0, comp_code 13 after 13
    [  183.331697] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6920, comp_code 13 after 13
    [  183.331946] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6950, comp_code 13 after 13
    [  183.332198] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6980, comp_code 13 after 13
    [  183.332552] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  183.332555] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  183.332556] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  183.333198] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6a40, comp_code 13 after 13
    [  183.333448] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6a70, comp_code 13 after 13
    [  183.333697] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6aa0, comp_code 13 after 13
    [  183.333948] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6ad0, comp_code 13 after 13
    [  183.334197] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b00, comp_code 13 after 13
    [  183.336539] uvcvideo 2-6.1:1.0: Frame complete (EOF found)

Or this much longer one:

    [  199.936170] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  199.949829] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea69e0, comp_code 13 after 13
    [  199.950076] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6a10, comp_code 13 after 13
    [  199.950326] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6a40, comp_code 13 after 13
    [  199.950575] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6a70, comp_code 13 after 13
    [  199.950825] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6aa0, comp_code 13 after 13
    [  199.951076] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6ad0, comp_code 13 after 13
    [  199.951326] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b00, comp_code 13 after 13
    [  199.951575] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6b30, comp_code 13 after 13
    [  199.952170] uvcvideo 2-6.1:1.0: Frame complete (EOF found)
    [  199.965952] xhci_hcd 0000:00:14.0: Transfer error for slot 7 ep 2 on endpoint
    [  199.966075] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966078] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966080] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966082] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966083] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966085] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966087] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966089] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966090] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966092] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966094] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966096] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966097] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966099] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966101] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966102] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966104] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966106] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966107] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966109] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966111] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966112] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966114] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966116] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966117] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966119] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966121] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966122] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966124] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea7370, set skip flag
    [  199.966327] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 7 ep 2.
    [  199.966329] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7650, comp_code 13 after 13
    [  199.966348] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-71)
    [  199.966350] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966352] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966353] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966354] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966355] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966357] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966358] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966359] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966360] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966362] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966363] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966364] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966365] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.966576] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7680, comp_code 13 after 13
    [  199.966825] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea76b0, comp_code 13 after 13
    [  199.967075] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea76e0, comp_code 13 after 13
    [  199.968161] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968163] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968164] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968165] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968167] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968168] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968169] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968170] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968172] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968173] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968174] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968176] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968177] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968178] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968179] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.968181] uvcvideo 2-6.1:1.0: USB isochronous frame lost (-18)
    [  199.971079] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea79e0, comp_code 13 after 13
    [  199.971325] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7a10, comp_code 13 after 13
    [  199.971575] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7a40, comp_code 13 after 13
    [  199.971825] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7a70, comp_code 13 after 13
    [  199.972076] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7aa0, comp_code 13 after 13
    [  199.972102] uvcvideo 2-6.1:1.0: Frame complete (EOF found)

But if I understand correctly these are the same as the cases I had
before which did *not* freeze the camera, and the patch hasn't touched
cases like those.

If the full log would be useful I can provide it, but it's much larger
this time with all the "spurious event" messages. If you do want it
please tell me whether it's OK to gzip and attach (a little over a
megabyte) or if there's some other preferred way to send it.

Would those moments where it reports "bailing out" have been freezes
before? Or not necessarily -- should I be running the test for longer?

If this indicates a fix (looks like it to me but I don't pretend to
fully understand all your explanation; sorry!) then thank you very
much, and I'll be interested in following a patch on its journey to
being merged into the kernel; please do CC me on that when the time
comes!

Otherwise, please let me know how I can help further.

Thanks.

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Wed, 29 Jul 2026 12:37:01 -0700, Bart Nagel wrote:
> I didn't seem to have the "before" blobs your patch indicates in my
> repo and it didn't want to apply where I was (at the first failing
> commit) so I went to 6.18.28 and applied your patch there.

Sorry, forgot to say that the patch was made for 6.15, but if it works
on 6.18 then fine. The alien blob IDs are other (unrelated) patches.

>     [  340.443735] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 10aea6260 td_dma 10aea6270, set skip flag
>     [  340.443740] xhci_hcd 0000:00:14.0: Event 23 for old TD end DMA 10aea6260 after 7us
>     [  340.443743] xhci_hcd 0000:00:14.0: BAILING OUT
>     [  340.443858] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6270, set skip flag
>     [  340.443861] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6270, set skip flag
>     [  340.444110] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 7 ep 2.

As expected, ep_trb_dma points one entry before the first pending TD.
The driver would throw out all TDs searching for the one which doesn't
exist anymore, but we prevented it and later recovered normally after
getting some event (not logged) which pointed to a valid TD.

So the fix works, maybe with exception of one edge case (see below).
We could potentially use it, or revert the bisected patch (it was only
an optimization, maybe nobody will notice), or add a quirk for this
particular chipset to ignore ep_trb_dma in Missed Service Errors.

Long term solution would be improving detection of events pointing to
completed TDs and/or not skipping when we don't have a sensible TRB
pointer. But we also need a "trivial" fix for stable kernels like 6.18.

> Missed service interval messages do not always lead to a "bailing out"
> message, like this example:

These examples are not interesting because ep_trb_dma is zero. But we
know that it can be non-zero and the driver still works (sometimes).

I'm slightly curious what exactly happens there (probably MSE after
Short Packet on a single-TRB TD), and whether Missed Service Error may
point at a Link TRB, because the current fix wouldn't handle that and
the stream could still hang. So your failure rate may actually be
reduced to 1/255 of what it was, but still not zero.

If possible, please boot the patched kernel again and run it for
a little longer. If it fails, post dmesg starting from the "Miss
service interval error" line which is followed by "All TDs skipped".

And while that is running, also collect another log:

cd /sys/kernel/tracing/
echo 1 > events/xhci-hcd/xhci_handle_event/enable
echo 1 > tracing_on
grep -B5 Missed trace_pipe | tee /tmp/trace

This is supposed to log 6 lines for every Missed Service Error, so it
will grow, but not terribly fast.

Regards,
Michal

Re: Regression: webcam freezing since Linux 6.15

[Mathias Nyman]

On 7/30/26 14:08, Michal Pecio wrote:
> On Wed, 29 Jul 2026 12:37:01 -0700, Bart Nagel wrote:
>> I didn't seem to have the "before" blobs your patch indicates in my
>> repo and it didn't want to apply where I was (at the first failing
>> commit) so I went to 6.18.28 and applied your patch there.
> 
> Sorry, forgot to say that the patch was made for 6.15, but if it works
> on 6.18 then fine. The alien blob IDs are other (unrelated) patches.
> 
>>      [  340.443735] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 10aea6260 td_dma 10aea6270, set skip flag
>>      [  340.443740] xhci_hcd 0000:00:14.0: Event 23 for old TD end DMA 10aea6260 after 7us
>>      [  340.443743] xhci_hcd 0000:00:14.0: BAILING OUT
>>      [  340.443858] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6270, set skip flag
>>      [  340.443861] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 0 td_dma 10aea6270, set skip flag
>>      [  340.444110] xhci_hcd 0000:00:14.0: Found td. Clear skip flag for slot 7 ep 2.
> 
> As expected, ep_trb_dma points one entry before the first pending TD.
> The driver would throw out all TDs searching for the one which doesn't
> exist anymore, but we prevented it and later recovered normally after
> getting some event (not logged) which pointed to a valid TD.
> 
> So the fix works, maybe with exception of one edge case (see below).
> We could potentially use it, or revert the bisected patch (it was only
> an optimization, maybe nobody will notice), or add a quirk for this
> particular chipset to ignore ep_trb_dma in Missed Service Errors.
> 
> Long term solution would be improving detection of events pointing to
> completed TDs and/or not skipping when we don't have a sensible TRB
> pointer. But we also need a "trivial" fix for stable kernels like 6.18.
> 

How about something like this:

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 4f98d8269625..639f15dec947 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2614,6 +2614,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
  	unsigned int slot_id;
  	int ep_index;
  	struct xhci_td *td = NULL;
+	struct xhci_td *ev_td = NULL;
  	dma_addr_t ep_trb_dma;
  	union xhci_trb *ep_trb;
  	int status = -EINPROGRESS;
@@ -2648,6 +2649,14 @@ static int handle_tx_event(struct xhci_hcd *xhci,
  	/* find the transfer trb this events points to */
  	ep_trb = xhci_dma_to_trb(ep_ring->deq_seg, ep_trb_dma, NULL);
  
+	/* find the td this event points to */
+	list_for_each_entry(td, &ep_ring->td_list, td_list) {
+		if (trb_in_td(td, ep_trb_dma)) {
+			ev_td = td;
+			break;
+		}
+	}
+
  	/* Look for common error cases */
  	switch (trb_comp_code) {
  	/* Skip codes that require special handling depending on
@@ -2795,7 +2804,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
  	}
  
  	/* If the TRB pointer is NULL, missed TDs will be skipped on the next event */
-	if (trb_comp_code == COMP_MISSED_SERVICE_ERROR && !ep_trb_dma)
+	if (trb_comp_code == COMP_MISSED_SERVICE_ERROR && !ev_td)
  		return 0;
  
  	if (list_empty(&ep_ring->td_list)) {

Should be trivial enough, handle MSE on link trb, and is in the right
direction for a longterm fix.

knowing ev_td will allow us to simplify the horrible do { } while (ep->skip)
loop later.

Thanks
Mathias

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-30 13:08:14 +0200, Michal Pecio wrote:
> I'm slightly curious what exactly happens there (probably MSE after
> Short Packet on a single-TRB TD), and whether Missed Service Error may
> point at a Link TRB, because the current fix wouldn't handle that and
> the stream could still hang. So your failure rate may actually be
> reduced to 1/255 of what it was, but still not zero.
> 
> If possible, please boot the patched kernel again and run it for
> a little longer. If it fails, post dmesg starting from the "Miss
> service interval error" line which is followed by "All TDs skipped".
> 
> And while that is running, also collect another log:
> 
> cd /sys/kernel/tracing/
> echo 1 > events/xhci-hcd/xhci_handle_event/enable
> echo 1 > tracing_on
> grep -B5 Missed trace_pipe | tee /tmp/trace
> 
> This is supposed to log 6 lines for every Missed Service Error, so it
> will grow, but not terribly fast.

Before I make a bad assumption and collect a useless log, please
confirm for me exactly which debugging I should enable. Just the two
you gave above, or also one or both of the ones I was using before:

    echo "func handle_tx_event +p" >/proc/dynamic_debug/control
    echo 0xff >/sys/module/uvcvideo/parameters/trace

Thanks.

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Thu, 30 Jul 2026 11:13:59 -0700, Bart Nagel wrote:
> At 2026-07-30 13:08:14 +0200, Michal Pecio wrote:
> > I'm slightly curious what exactly happens there (probably MSE after
> > Short Packet on a single-TRB TD), and whether Missed Service Error
> > may point at a Link TRB, because the current fix wouldn't handle
> > that and the stream could still hang. So your failure rate may
> > actually be reduced to 1/255 of what it was, but still not zero.
> > 
> > If possible, please boot the patched kernel again and run it for
> > a little longer. If it fails, post dmesg starting from the "Miss
> > service interval error" line which is followed by "All TDs skipped".
> > 
> > And while that is running, also collect another log:
> > 
> > cd /sys/kernel/tracing/
> > echo 1 > events/xhci-hcd/xhci_handle_event/enable
> > echo 1 > tracing_on
> > grep -B5 Missed trace_pipe | tee /tmp/trace
> > 
> > This is supposed to log 6 lines for every Missed Service Error, so
> > it will grow, but not terribly fast.  
> 
> Before I make a bad assumption and collect a useless log, please
> confirm for me exactly which debugging I should enable. Just the two
> you gave above, or also one or both of the ones I was using before:
> 
>     echo "func handle_tx_event +p" >/proc/dynamic_debug/control
>     echo 0xff >/sys/module/uvcvideo/parameters/trace

Yes, please keep handle_tx_event, otherwise xhci_hcd debug messages
won't show up. UVC trace is not that important.

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-30 23:59:53 +0200, Michal Pecio wrote:
> On Thu, 30 Jul 2026 11:13:59 -0700, Bart Nagel wrote:
> > At 2026-07-30 13:08:14 +0200, Michal Pecio wrote:
> > > I'm slightly curious what exactly happens there (probably MSE after
> > > Short Packet on a single-TRB TD), and whether Missed Service Error
> > > may point at a Link TRB, because the current fix wouldn't handle
> > > that and the stream could still hang. So your failure rate may
> > > actually be reduced to 1/255 of what it was, but still not zero.
> > > 
> > > If possible, please boot the patched kernel again and run it for
> > > a little longer. If it fails, post dmesg starting from the "Miss
> > > service interval error" line which is followed by "All TDs skipped".
> > > 
> > > And while that is running, also collect another log:
> > > 
> > > cd /sys/kernel/tracing/
> > > echo 1 > events/xhci-hcd/xhci_handle_event/enable
> > > echo 1 > tracing_on
> > > grep -B5 Missed trace_pipe | tee /tmp/trace
> > > 
> > > This is supposed to log 6 lines for every Missed Service Error, so
> > > it will grow, but not terribly fast.  
> > 
> > Before I make a bad assumption and collect a useless log, please
> > confirm for me exactly which debugging I should enable. Just the two
> > you gave above, or also one or both of the ones I was using before:
> > 
> >     echo "func handle_tx_event +p" >/proc/dynamic_debug/control
> >     echo 0xff >/sys/module/uvcvideo/parameters/trace
> 
> Yes, please keep handle_tx_event, otherwise xhci_hcd debug messages
> won't show up. UVC trace is not that important.

Ah, good, that seemed most likely and I did start it running. No
freeze yet after close to 4 hours.

Is there anything I can grep for in one log or the other which would
show that we're down to 0/255 chance of freezing rather than 1/255?
Else I'll just keep my CPU cooking overnight.

The trace log so far is sometimes getting lines starting with various
things such as stress, systemd-journal, PTF yeader, tee, grep,
PipeWire thread. Is this as expected?

An example which just popped up:

           stress-62735   [000] d.h1. 41416.344013: xhci_handle_event: EVENT: @0x000000010fb9c6c0 TRB 000000010aea66e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
           stress-62735   [000] d.h1. 41416.344013: xhci_handle_event: EVENT: @0x000000010fb9c6d0 TRB 000000010aea66f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
           stress-62735   [000] d.h1. 41416.344013: xhci_handle_event: EVENT: @0x000000010fb9c6e0 TRB 000000010aea6710 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
           stress-62735   [000] d.h1. 41416.344014: xhci_handle_event: EVENT: @0x000000010fb9c6f0 TRB 000000010aea6720 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
           stress-62735   [000] d.h1. 41416.344014: xhci_handle_event: EVENT: @0x000000010fb9c700 TRB 000000010aea6740 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
    kworker/u33:4-79857   [000] d.h1. 41416.344172: xhci_handle_event: EVENT: @0x000000010fb9c710 TRB 000000010aea6750 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
    kworker/u33:4-79857   [000] d.h1. 41416.344297: xhci_handle_event: EVENT: @0x000000010fb9c720 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
    kworker/u33:4-79857   [000] d.h1. 41416.344300: xhci_handle_event: EVENT: @0x000000010fb9c730 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C

I'm sometimes seeing some "USB Transaction Error" and "Short Packet"
as well as "Success" and "Missed Service Error".

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

At 2026-07-30 23:59:53 +0200, Michal Pecio wrote:
> On Thu, 30 Jul 2026 11:13:59 -0700, Bart Nagel wrote:
> > At 2026-07-30 13:08:14 +0200, Michal Pecio wrote:
> > > I'm slightly curious what exactly happens there (probably MSE after
> > > Short Packet on a single-TRB TD), and whether Missed Service Error
> > > may point at a Link TRB, because the current fix wouldn't handle
> > > that and the stream could still hang. So your failure rate may
> > > actually be reduced to 1/255 of what it was, but still not zero.
> > > 
> > > If possible, please boot the patched kernel again and run it for
> > > a little longer. If it fails, post dmesg starting from the "Miss
> > > service interval error" line which is followed by "All TDs skipped".
> > > 
> > > And while that is running, also collect another log:
> > > 
> > > cd /sys/kernel/tracing/
> > > echo 1 > events/xhci-hcd/xhci_handle_event/enable
> > > echo 1 > tracing_on
> > > grep -B5 Missed trace_pipe | tee /tmp/trace
> > > 
> > > This is supposed to log 6 lines for every Missed Service Error, so
> > > it will grow, but not terribly fast.  
> > 
> > Before I make a bad assumption and collect a useless log, please
> > confirm for me exactly which debugging I should enable. Just the two
> > you gave above, or also one or both of the ones I was using before:
> > 
> >     echo "func handle_tx_event +p" >/proc/dynamic_debug/control
> >     echo 0xff >/sys/module/uvcvideo/parameters/trace
> 
> Yes, please keep handle_tx_event, otherwise xhci_hcd debug messages
> won't show up. UVC trace is not that important.

OK. I ran it with your temporary patch for around 24 hours with heavy
system load and didn't get any freezes. The logs are large; please let
me know if there's anything I can grep for which might tell us that
the potential 1/255 chance of a freeze still being possible is ruled
out.

If you'd like me to run it longer I could, but I otherwise intend now
to switch over to your more formal patch. I will post a question in
that thread shortly.

--bart

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Wed, 5 Aug 2026 12:01:47 -0700, Bart Nagel wrote:
> At 2026-07-30 23:59:53 +0200, Michal Pecio wrote:
> > On Thu, 30 Jul 2026 11:13:59 -0700, Bart Nagel wrote:  
> > > At 2026-07-30 13:08:14 +0200, Michal Pecio wrote:  
> > > > I'm slightly curious what exactly happens there (probably MSE after
> > > > Short Packet on a single-TRB TD), and whether Missed Service Error
> > > > may point at a Link TRB, because the current fix wouldn't handle
> > > > that and the stream could still hang. So your failure rate may
> > > > actually be reduced to 1/255 of what it was, but still not zero.
> > > > 
> > > > If possible, please boot the patched kernel again and run it for
> > > > a little longer. If it fails, post dmesg starting from the "Miss
> > > > service interval error" line which is followed by "All TDs skipped".
> > > > 
> > > > And while that is running, also collect another log:
> > > > 
> > > > cd /sys/kernel/tracing/
> > > > echo 1 > events/xhci-hcd/xhci_handle_event/enable
> > > > echo 1 > tracing_on
> > > > grep -B5 Missed trace_pipe | tee /tmp/trace
> > > > 
> > > > This is supposed to log 6 lines for every Missed Service Error, so
> > > > it will grow, but not terribly fast.    
> > > 
> > > Before I make a bad assumption and collect a useless log, please
> > > confirm for me exactly which debugging I should enable. Just the two
> > > you gave above, or also one or both of the ones I was using before:
> > > 
> > >     echo "func handle_tx_event +p" >/proc/dynamic_debug/control
> > >     echo 0xff >/sys/module/uvcvideo/parameters/trace  
> > 
> > Yes, please keep handle_tx_event, otherwise xhci_hcd debug messages
> > won't show up. UVC trace is not that important.  
> 
> OK. I ran it with your temporary patch for around 24 hours with heavy
> system load and didn't get any freezes. The logs are large; please let
> me know if there's anything I can grep for which might tell us that
> the potential 1/255 chance of a freeze still being possible is ruled
> out.

Maybe stat with a sample of 100 events (thats 700 lines including ---
separators added by grep) from "grep -B5 Missed trace_pipe".

I mainly wanted to see if it's a reliable pattern that the suspicious
pointers are always 0x10 past the previous event's pointer.

And what happens when the previous event is at the end of a segment
(TRB pointer ends with 0xfe0), can we get Missed Service ending with
0xff0? The old patch wouldn't handle it, though the new one will.

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

[-- Attachment #1: Type: text/plain, Size: 3558 bytes --]

At 2026-08-05 22:36:04 +0200, Michal Pecio wrote:
> On Wed, 5 Aug 2026 12:01:47 -0700, Bart Nagel wrote:
> > At 2026-07-30 23:59:53 +0200, Michal Pecio wrote:
> > > On Thu, 30 Jul 2026 11:13:59 -0700, Bart Nagel wrote:  
> > > > At 2026-07-30 13:08:14 +0200, Michal Pecio wrote:  
> > > > > I'm slightly curious what exactly happens there (probably MSE after
> > > > > Short Packet on a single-TRB TD), and whether Missed Service Error
> > > > > may point at a Link TRB, because the current fix wouldn't handle
> > > > > that and the stream could still hang. So your failure rate may
> > > > > actually be reduced to 1/255 of what it was, but still not zero.
> > > > > 
> > > > > If possible, please boot the patched kernel again and run it for
> > > > > a little longer. If it fails, post dmesg starting from the "Miss
> > > > > service interval error" line which is followed by "All TDs skipped".
> > > > > 
> > > > > And while that is running, also collect another log:
> > > > > 
> > > > > cd /sys/kernel/tracing/
> > > > > echo 1 > events/xhci-hcd/xhci_handle_event/enable
> > > > > echo 1 > tracing_on
> > > > > grep -B5 Missed trace_pipe | tee /tmp/trace
> > > > > 
> > > > > This is supposed to log 6 lines for every Missed Service Error, so
> > > > > it will grow, but not terribly fast.    
> > > > 
> > > > Before I make a bad assumption and collect a useless log, please
> > > > confirm for me exactly which debugging I should enable. Just the two
> > > > you gave above, or also one or both of the ones I was using before:
> > > > 
> > > >     echo "func handle_tx_event +p" >/proc/dynamic_debug/control
> > > >     echo 0xff >/sys/module/uvcvideo/parameters/trace  
> > > 
> > > Yes, please keep handle_tx_event, otherwise xhci_hcd debug messages
> > > won't show up. UVC trace is not that important.  
> > 
> > OK. I ran it with your temporary patch for around 24 hours with heavy
> > system load and didn't get any freezes. The logs are large; please let
> > me know if there's anything I can grep for which might tell us that
> > the potential 1/255 chance of a freeze still being possible is ruled
> > out.
> 
> Maybe stat with a sample of 100 events (thats 700 lines including ---
> separators added by grep) from "grep -B5 Missed trace_pipe".
> 
> I mainly wanted to see if it's a reliable pattern that the suspicious
> pointers are always 0x10 past the previous event's pointer.
> 
> And what happens when the previous event is at the end of a segment
> (TRB pointer ends with 0xfe0), can we get Missed Service ending with
> 0xff0? The old patch wouldn't handle it, though the new one will.

OK. Attached are the first ~700 lines of the trace file.

That whole thing is 17M, and is here for 48 hours from now in case it
is more illuminating: https://tmpfiles.org/wAwAIQxuuahs/trace.txt

In the dmesg log (2.4G) I grepped for anything looking like an address
ending fe0 or ff0. No ff0 in it. Lots of fe0. Mostly lines like

    [35493.248486] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea6fe0, comp_code 13 after 13
    [35493.482230] xhci_hcd 0000:00:14.0: Spurious event dma 0x000000010aea7fe0, comp_code 13 after 13

And also some of these:

    [83974.976001] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 10aea7fe0 td_dma 10aea7fd0, set skip flag
    [94458.133128] xhci_hcd 0000:00:14.0: Miss service interval error for slot 7 ep 2 ep_trb_dma 10aea6fe0 td_dma 10aea6fd0, set skip flag

Though I suppose those are probably also covered by the other log.

Let me know if I can help further.

[-- Attachment #2: trace-700.txt --]
[-- Type: text/plain, Size: 127390 bytes --]

          stress-62731   [000] d.h1. 27849.945079: xhci_handle_event: EVENT: @0x000000010fb9c990 TRB 000000010aea7180 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27849.945080: xhci_handle_event: EVENT: @0x000000010fb9c9a0 TRB 000000010aea71a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27849.945080: xhci_handle_event: EVENT: @0x000000010fb9c9b0 TRB 000000010aea71b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27849.945080: xhci_handle_event: EVENT: @0x000000010fb9c9c0 TRB 000000010aea71d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27849.945080: xhci_handle_event: EVENT: @0x000000010fb9c9d0 TRB 000000010aea71e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27849.945080: xhci_handle_event: EVENT: @0x000000010fb9c9e0 TRB 000000010aea7200 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 27849.945197: xhci_handle_event: EVENT: @0x000000010fb9c9f0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 27849.945200: xhci_handle_event: EVENT: @0x000000010fb9ca00 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62732   [000] dlh1. 27856.374291: xhci_handle_event: EVENT: @0x000000010fb9cc30 TRB 000000010aea7ad0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62732   [000] d.h1. 27856.374948: xhci_handle_event: EVENT: @0x000000010fb9cc40 TRB 000000010aea7ae0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62732   [000] d.h1. 27856.374948: xhci_handle_event: EVENT: @0x000000010fb9cc50 TRB 000000010aea7b00 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62732   [000] d.h1. 27856.374948: xhci_handle_event: EVENT: @0x000000010fb9cc60 TRB 000000010aea7b10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62732   [000] d.h1. 27856.374949: xhci_handle_event: EVENT: @0x000000010fb9cc70 TRB 000000010aea7b30 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62732   [000] d.h1. 27856.374949: xhci_handle_event: EVENT: @0x000000010fb9cc80 TRB 000000010aea7b40 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h2. 27856.375074: xhci_handle_event: EVENT: @0x000000010fb9cc90 TRB 0000000000000000 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h2. 27856.375078: xhci_handle_event: EVENT: @0x000000010fb9cca0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62735   [000] d.h1. 27859.562084: xhci_handle_event: EVENT: @0x000000010fb9dfb0 TRB 000000010aea7a80 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27859.562085: xhci_handle_event: EVENT: @0x000000010fb9dfc0 TRB 000000010aea7aa0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27859.562085: xhci_handle_event: EVENT: @0x000000010fb9dfd0 TRB 000000010aea7ab0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27859.562085: xhci_handle_event: EVENT: @0x000000010fb9dfe0 TRB 000000010aea7ad0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27859.562086: xhci_handle_event: EVENT: @0x000000010fb9dff0 TRB 000000010aea7ae0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27859.562086: xhci_handle_event: EVENT: @0x000000010fb9c000 TRB 000000010aea7b00 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 27859.562200: xhci_handle_event: EVENT: @0x000000010fb9c010 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 27859.562203: xhci_handle_event: EVENT: @0x000000010fb9c020 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62731   [000] d.h1. 27863.998453: xhci_handle_event: EVENT: @0x000000010fb9c6d0 TRB 000000010aea6470 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998453: xhci_handle_event: EVENT: @0x000000010fb9c6e0 TRB 000000010aea6480 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998453: xhci_handle_event: EVENT: @0x000000010fb9c6f0 TRB 000000010aea64a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998453: xhci_handle_event: EVENT: @0x000000010fb9c700 TRB 000000010aea64b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998454: xhci_handle_event: EVENT: @0x000000010fb9c710 TRB 000000010aea64d0 status 'USB Transaction Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998575: xhci_handle_event: EVENT: @0x000000010fb9c720 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998579: xhci_handle_event: EVENT: @0x000000010fb9c730 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998581: xhci_handle_event: EVENT: @0x000000010fb9c740 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998584: xhci_handle_event: EVENT: @0x000000010fb9c750 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998586: xhci_handle_event: EVENT: @0x000000010fb9c760 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998588: xhci_handle_event: EVENT: @0x000000010fb9c770 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998590: xhci_handle_event: EVENT: @0x000000010fb9c780 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998592: xhci_handle_event: EVENT: @0x000000010fb9c790 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998593: xhci_handle_event: EVENT: @0x000000010fb9c7a0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998595: xhci_handle_event: EVENT: @0x000000010fb9c7b0 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998597: xhci_handle_event: EVENT: @0x000000010fb9c7c0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998599: xhci_handle_event: EVENT: @0x000000010fb9c7d0 TRB 0000000000000000 status 'Missed Service Error' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998601: xhci_handle_event: EVENT: @0x000000010fb9c7e0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998603: xhci_handle_event: EVENT: @0x000000010fb9c7f0 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998605: xhci_handle_event: EVENT: @0x000000010fb9c800 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998607: xhci_handle_event: EVENT: @0x000000010fb9c810 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998609: xhci_handle_event: EVENT: @0x000000010fb9c820 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998611: xhci_handle_event: EVENT: @0x000000010fb9c830 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998613: xhci_handle_event: EVENT: @0x000000010fb9c840 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998615: xhci_handle_event: EVENT: @0x000000010fb9c850 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998617: xhci_handle_event: EVENT: @0x000000010fb9c860 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998618: xhci_handle_event: EVENT: @0x000000010fb9c870 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998620: xhci_handle_event: EVENT: @0x000000010fb9c880 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998622: xhci_handle_event: EVENT: @0x000000010fb9c890 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998624: xhci_handle_event: EVENT: @0x000000010fb9c8a0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998626: xhci_handle_event: EVENT: @0x000000010fb9c8b0 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998628: xhci_handle_event: EVENT: @0x000000010fb9c8c0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998630: xhci_handle_event: EVENT: @0x000000010fb9c8d0 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27863.998632: xhci_handle_event: EVENT: @0x000000010fb9c8e0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62733   [000] dlh1. 27870.729335: xhci_handle_event: EVENT: @0x000000010fb9c8b0 TRB 000000010aea72d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27870.729335: xhci_handle_event: EVENT: @0x000000010fb9c8c0 TRB 000000010aea72f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27870.729335: xhci_handle_event: EVENT: @0x000000010fb9c8d0 TRB 000000010aea7300 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27870.729335: xhci_handle_event: EVENT: @0x000000010fb9c8e0 TRB 000000010aea7320 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27870.729336: xhci_handle_event: EVENT: @0x000000010fb9c8f0 TRB 000000010aea7330 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27870.729336: xhci_handle_event: EVENT: @0x000000010fb9c900 TRB 000000010aea7350 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27870.729452: xhci_handle_event: EVENT: @0x000000010fb9c910 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27870.729455: xhci_handle_event: EVENT: @0x000000010fb9c920 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62736   [000] dlh1. 27877.245332: xhci_handle_event: EVENT: @0x000000010fb9dba0 TRB 000000010aea7cf0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27877.245332: xhci_handle_event: EVENT: @0x000000010fb9dbb0 TRB 000000010aea7d10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27877.245332: xhci_handle_event: EVENT: @0x000000010fb9dbc0 TRB 000000010aea7d20 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27877.245332: xhci_handle_event: EVENT: @0x000000010fb9dbd0 TRB 000000010aea7d40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27877.245333: xhci_handle_event: EVENT: @0x000000010fb9dbe0 TRB 000000010aea7d50 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27877.245333: xhci_handle_event: EVENT: @0x000000010fb9dbf0 TRB 000000010aea7d70 status 'Missed Service Error' len 9216 slot 7 ep 3 type 'Transfer Event' flags e:c
 WaylandEventThr-62919   [000] d.h1. 27877.245454: xhci_handle_event: EVENT: @0x000000010fb9dc00 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
 WaylandEventThr-62919   [000] d.h1. 27877.245457: xhci_handle_event: EVENT: @0x000000010fb9dc10 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62735   [000] dlh1. 27881.335330: xhci_handle_event: EVENT: @0x000000010fb9c3e0 TRB 000000010aea6480 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] dlh1. 27881.335330: xhci_handle_event: EVENT: @0x000000010fb9c3f0 TRB 000000010aea64a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] dlh1. 27881.335331: xhci_handle_event: EVENT: @0x000000010fb9c400 TRB 000000010aea64b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] dlh1. 27881.335331: xhci_handle_event: EVENT: @0x000000010fb9c410 TRB 000000010aea64d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] dlh1. 27881.335331: xhci_handle_event: EVENT: @0x000000010fb9c420 TRB 000000010aea64e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] dlh1. 27881.335331: xhci_handle_event: EVENT: @0x000000010fb9c430 TRB 000000010aea6500 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
           dmesg-62709   [000] d.h1. 27881.335454: xhci_handle_event: EVENT: @0x000000010fb9c440 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
           dmesg-62709   [000] d.h1. 27881.335458: xhci_handle_event: EVENT: @0x000000010fb9c450 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62735   [000] d.h1. 27887.181590: xhci_handle_event: EVENT: @0x000000010fb9da60 TRB 000000010aea7660 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27887.181590: xhci_handle_event: EVENT: @0x000000010fb9da70 TRB 000000010aea7680 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27887.181590: xhci_handle_event: EVENT: @0x000000010fb9da80 TRB 000000010aea7690 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27887.181591: xhci_handle_event: EVENT: @0x000000010fb9da90 TRB 000000010aea76b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27887.181591: xhci_handle_event: EVENT: @0x000000010fb9daa0 TRB 000000010aea76c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62735   [000] d.h1. 27887.181591: xhci_handle_event: EVENT: @0x000000010fb9dab0 TRB 000000010aea76e0 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:C
            grep-62688   [000] d.h1. 27887.181705: xhci_handle_event: EVENT: @0x000000010fb9dac0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
            grep-62688   [000] d.h1. 27887.181709: xhci_handle_event: EVENT: @0x000000010fb9dad0 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] dlh1. 27890.162295: xhci_handle_event: EVENT: @0x000000010fb9cc80 TRB 000000010aea7b30 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166206: xhci_handle_event: EVENT: @0x000000010fb9cc90 TRB 000000010aea7b40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166207: xhci_handle_event: EVENT: @0x000000010fb9cca0 TRB 000000010aea7b60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166207: xhci_handle_event: EVENT: @0x000000010fb9ccb0 TRB 000000010aea7b70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166207: xhci_handle_event: EVENT: @0x000000010fb9ccc0 TRB 000000010aea7b90 status 'USB Transaction Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166331: xhci_handle_event: EVENT: @0x000000010fb9ccd0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166335: xhci_handle_event: EVENT: @0x000000010fb9cce0 TRB 0000000000000000 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166337: xhci_handle_event: EVENT: @0x000000010fb9ccf0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166339: xhci_handle_event: EVENT: @0x000000010fb9cd00 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166341: xhci_handle_event: EVENT: @0x000000010fb9cd10 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166343: xhci_handle_event: EVENT: @0x000000010fb9cd20 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166345: xhci_handle_event: EVENT: @0x000000010fb9cd30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166347: xhci_handle_event: EVENT: @0x000000010fb9cd40 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166349: xhci_handle_event: EVENT: @0x000000010fb9cd50 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166351: xhci_handle_event: EVENT: @0x000000010fb9cd60 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166353: xhci_handle_event: EVENT: @0x000000010fb9cd70 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166355: xhci_handle_event: EVENT: @0x000000010fb9cd80 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166357: xhci_handle_event: EVENT: @0x000000010fb9cd90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166359: xhci_handle_event: EVENT: @0x000000010fb9cda0 TRB 0000000000000000 status 'Missed Service Error' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166360: xhci_handle_event: EVENT: @0x000000010fb9cdb0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166363: xhci_handle_event: EVENT: @0x000000010fb9cdc0 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166365: xhci_handle_event: EVENT: @0x000000010fb9cdd0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166366: xhci_handle_event: EVENT: @0x000000010fb9cde0 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166369: xhci_handle_event: EVENT: @0x000000010fb9cdf0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166370: xhci_handle_event: EVENT: @0x000000010fb9ce00 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166372: xhci_handle_event: EVENT: @0x000000010fb9ce10 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166374: xhci_handle_event: EVENT: @0x000000010fb9ce20 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166376: xhci_handle_event: EVENT: @0x000000010fb9ce30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166378: xhci_handle_event: EVENT: @0x000000010fb9ce40 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166380: xhci_handle_event: EVENT: @0x000000010fb9ce50 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166382: xhci_handle_event: EVENT: @0x000000010fb9ce60 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166384: xhci_handle_event: EVENT: @0x000000010fb9ce70 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166386: xhci_handle_event: EVENT: @0x000000010fb9ce80 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27890.166388: xhci_handle_event: EVENT: @0x000000010fb9ce90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62730   [000] d.h1. 27896.212715: xhci_handle_event: EVENT: @0x000000010fb9c9e0 TRB 000000010aea6650 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27896.212715: xhci_handle_event: EVENT: @0x000000010fb9c9f0 TRB 000000010aea6660 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27896.212715: xhci_handle_event: EVENT: @0x000000010fb9ca00 TRB 000000010aea6680 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27896.212716: xhci_handle_event: EVENT: @0x000000010fb9ca10 TRB 000000010aea6690 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27896.212716: xhci_handle_event: EVENT: @0x000000010fb9ca20 TRB 000000010aea66b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27896.212716: xhci_handle_event: EVENT: @0x000000010fb9ca30 TRB 000000010aea66c0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 27896.212833: xhci_handle_event: EVENT: @0x000000010fb9ca40 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 27896.212837: xhci_handle_event: EVENT: @0x000000010fb9ca50 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62737   [000] d.h1. 27903.112715: xhci_handle_event: EVENT: @0x000000010fb9d6d0 TRB 000000010aea71a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27903.112715: xhci_handle_event: EVENT: @0x000000010fb9d6e0 TRB 000000010aea71b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27903.112716: xhci_handle_event: EVENT: @0x000000010fb9d6f0 TRB 000000010aea71d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27903.112716: xhci_handle_event: EVENT: @0x000000010fb9d700 TRB 000000010aea71e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27903.112716: xhci_handle_event: EVENT: @0x000000010fb9d710 TRB 000000010aea7200 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27903.112716: xhci_handle_event: EVENT: @0x000000010fb9d720 TRB 000000010aea7210 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h2. 27903.112838: xhci_handle_event: EVENT: @0x000000010fb9d730 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h2. 27903.112842: xhci_handle_event: EVENT: @0x000000010fb9d740 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62737   [000] d.h1. 27904.374301: xhci_handle_event: EVENT: @0x000000010fb9c890 TRB 000000010aea67d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27904.374302: xhci_handle_event: EVENT: @0x000000010fb9c8a0 TRB 000000010aea67e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27904.374302: xhci_handle_event: EVENT: @0x000000010fb9c8b0 TRB 000000010aea6800 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27904.374710: xhci_handle_event: EVENT: @0x000000010fb9c8c0 TRB 000000010aea6810 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27904.374710: xhci_handle_event: EVENT: @0x000000010fb9c8d0 TRB 000000010aea6830 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27904.374711: xhci_handle_event: EVENT: @0x000000010fb9c8e0 TRB 000000010aea6840 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27904.374836: xhci_handle_event: EVENT: @0x000000010fb9c8f0 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27904.374840: xhci_handle_event: EVENT: @0x000000010fb9c900 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62737   [000] d.h1. 27914.966306: xhci_handle_event: EVENT: @0x000000010fb9da20 TRB 000000010aea6ec0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27914.966306: xhci_handle_event: EVENT: @0x000000010fb9da30 TRB 000000010aea6ed0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27914.966306: xhci_handle_event: EVENT: @0x000000010fb9da40 TRB 000000010aea6ef0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27914.966307: xhci_handle_event: EVENT: @0x000000010fb9da50 TRB 000000010aea6f00 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27914.966307: xhci_handle_event: EVENT: @0x000000010fb9da60 TRB 000000010aea6f20 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
   kworker/u33:4-62802   [000] d.h1. 27914.966463: xhci_handle_event: EVENT: @0x000000010fb9da70 TRB 000000010aea6f30 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27914.966588: xhci_handle_event: EVENT: @0x000000010fb9da80 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27914.966591: xhci_handle_event: EVENT: @0x000000010fb9da90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] d.h1. 27926.329718: xhci_handle_event: EVENT: @0x000000010fb9dc80 TRB 000000010aea7aa0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329718: xhci_handle_event: EVENT: @0x000000010fb9dc90 TRB 000000010aea7ab0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329718: xhci_handle_event: EVENT: @0x000000010fb9dca0 TRB 000000010aea7ad0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329718: xhci_handle_event: EVENT: @0x000000010fb9dcb0 TRB 000000010aea7ae0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329719: xhci_handle_event: EVENT: @0x000000010fb9dcc0 TRB 000000010aea7b00 status 'Short Packet' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329719: xhci_handle_event: EVENT: @0x000000010fb9dcd0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329724: xhci_handle_event: EVENT: @0x000000010fb9dce0 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27926.329727: xhci_handle_event: EVENT: @0x000000010fb9dcf0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] d.h1. 27932.196972: xhci_handle_event: EVENT: @0x000000010fb9dbd0 TRB 000000010aea7c60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27932.196972: xhci_handle_event: EVENT: @0x000000010fb9dbe0 TRB 000000010aea7c80 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27932.196972: xhci_handle_event: EVENT: @0x000000010fb9dbf0 TRB 000000010aea7c90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27932.196972: xhci_handle_event: EVENT: @0x000000010fb9dc00 TRB 000000010aea7cb0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27932.196972: xhci_handle_event: EVENT: @0x000000010fb9dc10 TRB 000000010aea7cc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27932.196973: xhci_handle_event: EVENT: @0x000000010fb9dc20 TRB 000000010aea7ce0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 27932.197091: xhci_handle_event: EVENT: @0x000000010fb9dc30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 27932.197095: xhci_handle_event: EVENT: @0x000000010fb9dc40 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62730   [000] dlh1. 27937.180368: xhci_handle_event: EVENT: @0x000000010fb9d0b0 TRB 000000010aea64a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] dlh1. 27937.180368: xhci_handle_event: EVENT: @0x000000010fb9d0c0 TRB 000000010aea64b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] dlh1. 27937.180369: xhci_handle_event: EVENT: @0x000000010fb9d0d0 TRB 000000010aea64d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] dlh1. 27937.180369: xhci_handle_event: EVENT: @0x000000010fb9d0e0 TRB 000000010aea64e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] dlh1. 27937.180370: xhci_handle_event: EVENT: @0x000000010fb9d0f0 TRB 000000010aea6500 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] dlh1. 27937.180370: xhci_handle_event: EVENT: @0x000000010fb9d100 TRB 000000010aea6510 status 'Missed Service Error' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27937.180469: xhci_handle_event: EVENT: @0x000000010fb9d110 TRB 0000000000000000 status 'Missed Service Error' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27937.180473: xhci_handle_event: EVENT: @0x000000010fb9d120 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62732   [000] d.h1. 27941.480497: xhci_handle_event: EVENT: @0x000000010fb9c4c0 TRB 000000010aea6a50 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62732   [000] d.h1. 27941.480497: xhci_handle_event: EVENT: @0x000000010fb9c4d0 TRB 000000010aea6a70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62732   [000] d.h1. 27941.480497: xhci_handle_event: EVENT: @0x000000010fb9c4e0 TRB 000000010aea6a80 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62732   [000] d.h1. 27941.480498: xhci_handle_event: EVENT: @0x000000010fb9c4f0 TRB 000000010aea6aa0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62732   [000] d.h1. 27941.480498: xhci_handle_event: EVENT: @0x000000010fb9c500 TRB 000000010aea6ab0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62732   [000] d.h1. 27941.480498: xhci_handle_event: EVENT: @0x000000010fb9c510 TRB 000000010aea6ad0 status 'Missed Service Error' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27941.480594: xhci_handle_event: EVENT: @0x000000010fb9c520 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27941.480597: xhci_handle_event: EVENT: @0x000000010fb9c530 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62733   [000] d.h1. 27945.032497: xhci_handle_event: EVENT: @0x000000010fb9d510 TRB 000000010aea7cc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 27945.032497: xhci_handle_event: EVENT: @0x000000010fb9d520 TRB 000000010aea7ce0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 27945.032498: xhci_handle_event: EVENT: @0x000000010fb9d530 TRB 000000010aea7cf0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 27945.032498: xhci_handle_event: EVENT: @0x000000010fb9d540 TRB 000000010aea7d10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 27945.032498: xhci_handle_event: EVENT: @0x000000010fb9d550 TRB 000000010aea7d20 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 27945.032498: xhci_handle_event: EVENT: @0x000000010fb9d560 TRB 000000010aea7d40 status 'Missed Service Error' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
             tee-62705   [000] d.h1. 27945.032594: xhci_handle_event: EVENT: @0x000000010fb9d570 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
             tee-62705   [000] d.h1. 27945.032598: xhci_handle_event: EVENT: @0x000000010fb9d580 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62733   [000] dlh1. 27945.462597: xhci_handle_event: EVENT: @0x000000010fb9d470 TRB 000000010aea6140 status 'Short Packet' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27945.463345: xhci_handle_event: EVENT: @0x000000010fb9d480 TRB 000000010aea6150 status 'Short Packet' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27945.463346: xhci_handle_event: EVENT: @0x000000010fb9d490 TRB 000000010aea6170 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27945.463346: xhci_handle_event: EVENT: @0x000000010fb9d4a0 TRB 000000010aea6180 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27945.463347: xhci_handle_event: EVENT: @0x000000010fb9d4b0 TRB 000000010aea61a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] dlh1. 27945.463347: xhci_handle_event: EVENT: @0x000000010fb9d4c0 TRB 000000010aea61b0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
            grep-62688   [000] d.h1. 27945.463470: xhci_handle_event: EVENT: @0x000000010fb9d4d0 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:C
            grep-62688   [000] d.h1. 27945.463474: xhci_handle_event: EVENT: @0x000000010fb9d4e0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62736   [000] d.h1. 27947.606189: xhci_handle_event: EVENT: @0x000000010fb9cbd0 TRB 000000010aea6ef0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 27947.606189: xhci_handle_event: EVENT: @0x000000010fb9cbe0 TRB 000000010aea6f00 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 27947.606190: xhci_handle_event: EVENT: @0x000000010fb9cbf0 TRB 000000010aea6f20 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27947.606470: xhci_handle_event: EVENT: @0x000000010fb9cc00 TRB 000000010aea6f30 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] dlh1. 27947.606470: xhci_handle_event: EVENT: @0x000000010fb9cc10 TRB 000000010aea6f40 status 'Short Packet' len 5120 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 27947.606595: xhci_handle_event: EVENT: @0x000000010fb9cc20 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 27947.606600: xhci_handle_event: EVENT: @0x000000010fb9cc30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 27947.606603: xhci_handle_event: EVENT: @0x000000010fb9cc40 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62737   [000] d.h1. 27954.234974: xhci_handle_event: EVENT: @0x000000010fb9c990 TRB 000000010aea6b40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.234975: xhci_handle_event: EVENT: @0x000000010fb9c9a0 TRB 000000010aea6b60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.234975: xhci_handle_event: EVENT: @0x000000010fb9c9b0 TRB 000000010aea6b70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.234975: xhci_handle_event: EVENT: @0x000000010fb9c9c0 TRB 000000010aea6b90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.234975: xhci_handle_event: EVENT: @0x000000010fb9c9d0 TRB 000000010aea6ba0 status 'USB Transaction Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235097: xhci_handle_event: EVENT: @0x000000010fb9c9e0 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235100: xhci_handle_event: EVENT: @0x000000010fb9c9f0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235102: xhci_handle_event: EVENT: @0x000000010fb9ca00 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235104: xhci_handle_event: EVENT: @0x000000010fb9ca10 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235106: xhci_handle_event: EVENT: @0x000000010fb9ca20 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235108: xhci_handle_event: EVENT: @0x000000010fb9ca30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235110: xhci_handle_event: EVENT: @0x000000010fb9ca40 TRB 0000000000000000 status 'Missed Service Error' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235112: xhci_handle_event: EVENT: @0x000000010fb9ca50 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235114: xhci_handle_event: EVENT: @0x000000010fb9ca60 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235116: xhci_handle_event: EVENT: @0x000000010fb9ca70 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235118: xhci_handle_event: EVENT: @0x000000010fb9ca80 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235120: xhci_handle_event: EVENT: @0x000000010fb9ca90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235122: xhci_handle_event: EVENT: @0x000000010fb9caa0 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235123: xhci_handle_event: EVENT: @0x000000010fb9cab0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235125: xhci_handle_event: EVENT: @0x000000010fb9cac0 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235127: xhci_handle_event: EVENT: @0x000000010fb9cad0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235129: xhci_handle_event: EVENT: @0x000000010fb9cae0 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235131: xhci_handle_event: EVENT: @0x000000010fb9caf0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235133: xhci_handle_event: EVENT: @0x000000010fb9cb00 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235135: xhci_handle_event: EVENT: @0x000000010fb9cb10 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235137: xhci_handle_event: EVENT: @0x000000010fb9cb20 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235139: xhci_handle_event: EVENT: @0x000000010fb9cb30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235140: xhci_handle_event: EVENT: @0x000000010fb9cb40 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235142: xhci_handle_event: EVENT: @0x000000010fb9cb50 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235144: xhci_handle_event: EVENT: @0x000000010fb9cb60 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235146: xhci_handle_event: EVENT: @0x000000010fb9cb70 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235148: xhci_handle_event: EVENT: @0x000000010fb9cb80 TRB 0000000000000000 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235150: xhci_handle_event: EVENT: @0x000000010fb9cb90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27954.235152: xhci_handle_event: EVENT: @0x000000010fb9cba0 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:c
--
       alacritty-3487    [000] d.h1. 27955.801730: xhci_handle_event: EVENT: @0x000000010fb9db30 TRB 000000010aea6960 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801731: xhci_handle_event: EVENT: @0x000000010fb9db40 TRB 000000010aea6980 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801731: xhci_handle_event: EVENT: @0x000000010fb9db50 TRB 000000010aea6990 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801731: xhci_handle_event: EVENT: @0x000000010fb9db60 TRB 000000010aea69b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801731: xhci_handle_event: EVENT: @0x000000010fb9db70 TRB 000000010aea69c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801731: xhci_handle_event: EVENT: @0x000000010fb9db80 TRB 000000010aea69e0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801848: xhci_handle_event: EVENT: @0x000000010fb9db90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
       alacritty-3487    [000] d.h1. 27955.801851: xhci_handle_event: EVENT: @0x000000010fb9dba0 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] d.h1. 27958.051848: xhci_handle_event: EVENT: @0x000000010fb9cfe0 TRB 000000010aea6780 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051849: xhci_handle_event: EVENT: @0x000000010fb9cff0 TRB 000000010aea67a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051849: xhci_handle_event: EVENT: @0x000000010fb9d000 TRB 000000010aea67b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051849: xhci_handle_event: EVENT: @0x000000010fb9d010 TRB 000000010aea67d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051849: xhci_handle_event: EVENT: @0x000000010fb9d020 TRB 000000010aea67e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051850: xhci_handle_event: EVENT: @0x000000010fb9d030 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051856: xhci_handle_event: EVENT: @0x000000010fb9d040 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051858: xhci_handle_event: EVENT: @0x000000010fb9d050 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27958.051860: xhci_handle_event: EVENT: @0x000000010fb9d060 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62730   [000] d.h1. 27964.382065: xhci_handle_event: EVENT: @0x000000010fb9d410 TRB 000000010aea6630 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.382065: xhci_handle_event: EVENT: @0x000000010fb9d420 TRB 000000010aea6650 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.382065: xhci_handle_event: EVENT: @0x000000010fb9d430 TRB 000000010aea6660 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.382066: xhci_handle_event: EVENT: @0x000000010fb9d440 TRB 000000010aea6680 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385723: xhci_handle_event: EVENT: @0x000000010fb9d450 TRB 000000010aea6690 status 'USB Transaction Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385849: xhci_handle_event: EVENT: @0x000000010fb9d460 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385852: xhci_handle_event: EVENT: @0x000000010fb9d470 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385855: xhci_handle_event: EVENT: @0x000000010fb9d480 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385857: xhci_handle_event: EVENT: @0x000000010fb9d490 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385859: xhci_handle_event: EVENT: @0x000000010fb9d4a0 TRB 0000000000000000 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385861: xhci_handle_event: EVENT: @0x000000010fb9d4b0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385863: xhci_handle_event: EVENT: @0x000000010fb9d4c0 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385865: xhci_handle_event: EVENT: @0x000000010fb9d4d0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385867: xhci_handle_event: EVENT: @0x000000010fb9d4e0 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385869: xhci_handle_event: EVENT: @0x000000010fb9d4f0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385870: xhci_handle_event: EVENT: @0x000000010fb9d500 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385872: xhci_handle_event: EVENT: @0x000000010fb9d510 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385874: xhci_handle_event: EVENT: @0x000000010fb9d520 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385876: xhci_handle_event: EVENT: @0x000000010fb9d530 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385878: xhci_handle_event: EVENT: @0x000000010fb9d540 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385880: xhci_handle_event: EVENT: @0x000000010fb9d550 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385882: xhci_handle_event: EVENT: @0x000000010fb9d560 TRB 0000000000000000 status 'Missed Service Error' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385884: xhci_handle_event: EVENT: @0x000000010fb9d570 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385886: xhci_handle_event: EVENT: @0x000000010fb9d580 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385888: xhci_handle_event: EVENT: @0x000000010fb9d590 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385890: xhci_handle_event: EVENT: @0x000000010fb9d5a0 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385892: xhci_handle_event: EVENT: @0x000000010fb9d5b0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385894: xhci_handle_event: EVENT: @0x000000010fb9d5c0 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385896: xhci_handle_event: EVENT: @0x000000010fb9d5d0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385898: xhci_handle_event: EVENT: @0x000000010fb9d5e0 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385900: xhci_handle_event: EVENT: @0x000000010fb9d5f0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385902: xhci_handle_event: EVENT: @0x000000010fb9d600 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385903: xhci_handle_event: EVENT: @0x000000010fb9d610 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385905: xhci_handle_event: EVENT: @0x000000010fb9d620 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 27964.385907: xhci_handle_event: EVENT: @0x000000010fb9d630 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] d.h1. 27966.416749: xhci_handle_event: EVENT: @0x000000010fb9d1c0 TRB 000000010aea6200 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416750: xhci_handle_event: EVENT: @0x000000010fb9d1d0 TRB 000000010aea6210 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416750: xhci_handle_event: EVENT: @0x000000010fb9d1e0 TRB 000000010aea6230 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416750: xhci_handle_event: EVENT: @0x000000010fb9d1f0 TRB 000000010aea6240 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416750: xhci_handle_event: EVENT: @0x000000010fb9d200 TRB 000000010aea6260 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416751: xhci_handle_event: EVENT: @0x000000010fb9d210 TRB 000000010aea6270 status 'Missed Service Error' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416850: xhci_handle_event: EVENT: @0x000000010fb9d220 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27966.416853: xhci_handle_event: EVENT: @0x000000010fb9d230 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62731   [000] d.h1. 27969.380228: xhci_handle_event: EVENT: @0x000000010fb9d2c0 TRB 000000010aea79e0 status 'Short Packet' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.380975: xhci_handle_event: EVENT: @0x000000010fb9d2d0 TRB 000000010aea79f0 status 'Short Packet' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.380976: xhci_handle_event: EVENT: @0x000000010fb9d2e0 TRB 000000010aea7a10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.380976: xhci_handle_event: EVENT: @0x000000010fb9d2f0 TRB 000000010aea7a20 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.380977: xhci_handle_event: EVENT: @0x000000010fb9d300 TRB 000000010aea7a40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.380977: xhci_handle_event: EVENT: @0x000000010fb9d310 TRB 000000010aea7a50 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.381101: xhci_handle_event: EVENT: @0x000000010fb9d320 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27969.381105: xhci_handle_event: EVENT: @0x000000010fb9d330 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62734   [000] d.h1. 27971.863604: xhci_handle_event: EVENT: @0x000000010fb9d820 TRB 000000010aea6720 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863604: xhci_handle_event: EVENT: @0x000000010fb9d830 TRB 000000010aea6740 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863605: xhci_handle_event: EVENT: @0x000000010fb9d840 TRB 000000010aea6750 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863605: xhci_handle_event: EVENT: @0x000000010fb9d850 TRB 000000010aea6770 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863605: xhci_handle_event: EVENT: @0x000000010fb9d860 TRB 000000010aea6780 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863606: xhci_handle_event: EVENT: @0x000000010fb9d870 TRB 000000010aea67a0 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863726: xhci_handle_event: EVENT: @0x000000010fb9d880 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27971.863729: xhci_handle_event: EVENT: @0x000000010fb9d890 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:c
--
 systemd-journal-866     [000] d.h1. 27973.963228: xhci_handle_event: EVENT: @0x000000010fb9df20 TRB 000000010aea7490 status 'Short Packet' len 23552 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 27973.963229: xhci_handle_event: EVENT: @0x000000010fb9df30 TRB 000000010aea74a0 status 'Short Packet' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h11 27973.963851: xhci_handle_event: EVENT: @0x000000010fb9df40 TRB 000000010aea74b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h11 27973.963852: xhci_handle_event: EVENT: @0x000000010fb9df50 TRB 000000010aea74d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h11 27973.963852: xhci_handle_event: EVENT: @0x000000010fb9df60 TRB 000000010aea74e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h11 27973.963852: xhci_handle_event: EVENT: @0x000000010fb9df70 TRB 000000010aea7500 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h2. 27973.963976: xhci_handle_event: EVENT: @0x000000010fb9df80 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h2. 27973.963980: xhci_handle_event: EVENT: @0x000000010fb9df90 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62736   [000] d.h1. 27974.113853: xhci_handle_event: EVENT: @0x000000010fb9cd30 TRB 000000010aea6570 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 27974.113854: xhci_handle_event: EVENT: @0x000000010fb9cd40 TRB 000000010aea6590 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 27974.113854: xhci_handle_event: EVENT: @0x000000010fb9cd50 TRB 000000010aea65a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 27974.113854: xhci_handle_event: EVENT: @0x000000010fb9cd60 TRB 000000010aea65c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 27974.113855: xhci_handle_event: EVENT: @0x000000010fb9cd70 TRB 000000010aea65d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 27974.113855: xhci_handle_event: EVENT: @0x000000010fb9cd80 TRB 000000010aea65f0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27974.113976: xhci_handle_event: EVENT: @0x000000010fb9cd90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27974.113980: xhci_handle_event: EVENT: @0x000000010fb9cda0 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62734   [000] d.h1. 27975.213977: xhci_handle_event: EVENT: @0x000000010fb9c710 TRB 000000010aea61d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27975.213977: xhci_handle_event: EVENT: @0x000000010fb9c720 TRB 000000010aea61e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27975.213978: xhci_handle_event: EVENT: @0x000000010fb9c730 TRB 000000010aea6200 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27975.213978: xhci_handle_event: EVENT: @0x000000010fb9c740 TRB 000000010aea6210 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27975.213978: xhci_handle_event: EVENT: @0x000000010fb9c750 TRB 000000010aea6230 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27975.213979: xhci_handle_event: EVENT: @0x000000010fb9c760 TRB 000000010aea6240 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27975.214102: xhci_handle_event: EVENT: @0x000000010fb9c770 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27975.214106: xhci_handle_event: EVENT: @0x000000010fb9c780 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62731   [000] d.h1. 27978.266977: xhci_handle_event: EVENT: @0x000000010fb9de70 TRB 000000010aea7c80 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27978.266977: xhci_handle_event: EVENT: @0x000000010fb9de80 TRB 000000010aea7c90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27978.266978: xhci_handle_event: EVENT: @0x000000010fb9de90 TRB 000000010aea7cb0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27978.266978: xhci_handle_event: EVENT: @0x000000010fb9dea0 TRB 000000010aea7cc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27978.266978: xhci_handle_event: EVENT: @0x000000010fb9deb0 TRB 000000010aea7ce0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 27978.266978: xhci_handle_event: EVENT: @0x000000010fb9dec0 TRB 000000010aea7cf0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 27978.267103: xhci_handle_event: EVENT: @0x000000010fb9ded0 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 27978.267107: xhci_handle_event: EVENT: @0x000000010fb9dee0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62731   [000] d.h1. 27978.414064: xhci_handle_event: EVENT: @0x000000010fb9cb70 TRB 000000010aea6b60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414064: xhci_handle_event: EVENT: @0x000000010fb9cb80 TRB 000000010aea6b70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414064: xhci_handle_event: EVENT: @0x000000010fb9cb90 TRB 000000010aea6b90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414064: xhci_handle_event: EVENT: @0x000000010fb9cba0 TRB 000000010aea6ba0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414065: xhci_handle_event: EVENT: @0x000000010fb9cbb0 TRB 000000010aea6bc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414228: xhci_handle_event: EVENT: @0x000000010fb9cbc0 TRB 000000010aea6bd0 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414353: xhci_handle_event: EVENT: @0x000000010fb9cbd0 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 27978.414355: xhci_handle_event: EVENT: @0x000000010fb9cbe0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] d.h1. 27978.714063: xhci_handle_event: EVENT: @0x000000010fb9c720 TRB 000000010aea6d40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714063: xhci_handle_event: EVENT: @0x000000010fb9c730 TRB 000000010aea6d50 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714063: xhci_handle_event: EVENT: @0x000000010fb9c740 TRB 000000010aea6d70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714064: xhci_handle_event: EVENT: @0x000000010fb9c750 TRB 000000010aea6d80 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714064: xhci_handle_event: EVENT: @0x000000010fb9c760 TRB 000000010aea6da0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714227: xhci_handle_event: EVENT: @0x000000010fb9c770 TRB 000000010aea6db0 status 'Missed Service Error' len 1024 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714353: xhci_handle_event: EVENT: @0x000000010fb9c780 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 27978.714356: xhci_handle_event: EVENT: @0x000000010fb9c790 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
 systemd-journal-866     [000] d.h1. 27980.864481: xhci_handle_event: EVENT: @0x000000010fb9c820 TRB 000000010aea6050 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864481: xhci_handle_event: EVENT: @0x000000010fb9c830 TRB 000000010aea6060 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864482: xhci_handle_event: EVENT: @0x000000010fb9c840 TRB 000000010aea6080 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864482: xhci_handle_event: EVENT: @0x000000010fb9c850 TRB 000000010aea6090 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864482: xhci_handle_event: EVENT: @0x000000010fb9c860 TRB 000000010aea60b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864482: xhci_handle_event: EVENT: @0x000000010fb9c870 TRB 000000010aea60c0 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864603: xhci_handle_event: EVENT: @0x000000010fb9c880 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 27980.864607: xhci_handle_event: EVENT: @0x000000010fb9c890 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
            tail-63116   [000] dlh1. 27980.914073: xhci_handle_event: EVENT: @0x000000010fb9c220 TRB 000000010aea65f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
            tail-63116   [000] dlh1. 27980.914073: xhci_handle_event: EVENT: @0x000000010fb9c230 TRB 000000010aea6600 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
            tail-63116   [000] dlh1. 27980.914073: xhci_handle_event: EVENT: @0x000000010fb9c240 TRB 000000010aea6620 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27980.914479: xhci_handle_event: EVENT: @0x000000010fb9c250 TRB 000000010aea6630 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27980.914479: xhci_handle_event: EVENT: @0x000000010fb9c260 TRB 000000010aea6650 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27980.914480: xhci_handle_event: EVENT: @0x000000010fb9c270 TRB 000000010aea6660 status 'Missed Service Error' len 9216 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27980.914603: xhci_handle_event: EVENT: @0x000000010fb9c280 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 27980.914606: xhci_handle_event: EVENT: @0x000000010fb9c290 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62735   [000] d.h1. 27984.031479: xhci_handle_event: EVENT: @0x000000010fb9dc80 TRB 000000010aea70c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031480: xhci_handle_event: EVENT: @0x000000010fb9dc90 TRB 000000010aea70e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031480: xhci_handle_event: EVENT: @0x000000010fb9dca0 TRB 000000010aea70f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031480: xhci_handle_event: EVENT: @0x000000010fb9dcb0 TRB 000000010aea7110 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031480: xhci_handle_event: EVENT: @0x000000010fb9dcc0 TRB 000000010aea7120 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031481: xhci_handle_event: EVENT: @0x000000010fb9dcd0 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031488: xhci_handle_event: EVENT: @0x000000010fb9dce0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031490: xhci_handle_event: EVENT: @0x000000010fb9dcf0 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27984.031493: xhci_handle_event: EVENT: @0x000000010fb9dd00 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62737   [000] d.h1. 27986.081608: xhci_handle_event: EVENT: @0x000000010fb9c0e0 TRB 000000010aea7890 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081608: xhci_handle_event: EVENT: @0x000000010fb9c0f0 TRB 000000010aea78a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081608: xhci_handle_event: EVENT: @0x000000010fb9c100 TRB 000000010aea78c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081609: xhci_handle_event: EVENT: @0x000000010fb9c110 TRB 000000010aea78d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081609: xhci_handle_event: EVENT: @0x000000010fb9c120 TRB 000000010aea78f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081609: xhci_handle_event: EVENT: @0x000000010fb9c130 TRB 000000010aea7900 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081730: xhci_handle_event: EVENT: @0x000000010fb9c140 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62737   [000] d.h1. 27986.081732: xhci_handle_event: EVENT: @0x000000010fb9c150 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62733   [000] d.h1. 27989.867483: xhci_handle_event: EVENT: @0x000000010fb9ccb0 TRB 000000010aea7b10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 27989.867484: xhci_handle_event: EVENT: @0x000000010fb9ccc0 TRB 000000010aea7b30 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 27989.867484: xhci_handle_event: EVENT: @0x000000010fb9ccd0 TRB 000000010aea7b40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 27989.867484: xhci_handle_event: EVENT: @0x000000010fb9cce0 TRB 000000010aea7b60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 27989.867484: xhci_handle_event: EVENT: @0x000000010fb9ccf0 TRB 000000010aea7b70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 27989.867485: xhci_handle_event: EVENT: @0x000000010fb9cd00 TRB 000000010aea7b90 status 'Missed Service Error' len 3072 slot 7 ep 3 type 'Transfer Event' flags e:C
            grep-63117   [000] d.h1. 27989.867605: xhci_handle_event: EVENT: @0x000000010fb9cd10 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
            grep-63117   [000] d.h1. 27989.867609: xhci_handle_event: EVENT: @0x000000010fb9cd20 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62737   [000] d.h1. 27990.125947: xhci_handle_event: EVENT: @0x000000010fb9d280 TRB 000000010aea7e00 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27990.125947: xhci_handle_event: EVENT: @0x000000010fb9d290 TRB 000000010aea7e10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27990.125947: xhci_handle_event: EVENT: @0x000000010fb9d2a0 TRB 000000010aea7e30 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27990.126230: xhci_handle_event: EVENT: @0x000000010fb9d2b0 TRB 000000010aea7e40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27990.126231: xhci_handle_event: EVENT: @0x000000010fb9d2c0 TRB 000000010aea7e50 status 'Short Packet' len 1024 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62737   [000] d.h1. 27990.126232: xhci_handle_event: EVENT: @0x000000010fb9d2d0 TRB 000000010aea7e60 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
            tail-63116   [000] dlh2. 27990.126357: xhci_handle_event: EVENT: @0x000000010fb9d2e0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
            tail-63116   [000] dlh2. 27990.126360: xhci_handle_event: EVENT: @0x000000010fb9d2f0 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
--
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649489: xhci_handle_event: EVENT: @0x000000010fb9d630 TRB 000000010aea69c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649489: xhci_handle_event: EVENT: @0x000000010fb9d640 TRB 000000010aea69e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649489: xhci_handle_event: EVENT: @0x000000010fb9d650 TRB 000000010aea69f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649490: xhci_handle_event: EVENT: @0x000000010fb9d660 TRB 000000010aea6a10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649490: xhci_handle_event: EVENT: @0x000000010fb9d670 TRB 000000010aea6a20 status 'Short Packet' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649490: xhci_handle_event: EVENT: @0x000000010fb9d680 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649497: xhci_handle_event: EVENT: @0x000000010fb9d690 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
 .Hyprland-wrapp-2343    [000] d.h1. 27992.649500: xhci_handle_event: EVENT: @0x000000010fb9d6a0 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62735   [000] d.h1. 27994.616483: xhci_handle_event: EVENT: @0x000000010fb9d7f0 TRB 000000010aea72d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616483: xhci_handle_event: EVENT: @0x000000010fb9d800 TRB 000000010aea72f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616483: xhci_handle_event: EVENT: @0x000000010fb9d810 TRB 000000010aea7300 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616484: xhci_handle_event: EVENT: @0x000000010fb9d820 TRB 000000010aea7320 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616484: xhci_handle_event: EVENT: @0x000000010fb9d830 TRB 000000010aea7330 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616484: xhci_handle_event: EVENT: @0x000000010fb9d840 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616489: xhci_handle_event: EVENT: @0x000000010fb9d850 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616491: xhci_handle_event: EVENT: @0x000000010fb9d860 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 27994.616493: xhci_handle_event: EVENT: @0x000000010fb9d870 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62734   [000] d.h1. 27997.234481: xhci_handle_event: EVENT: @0x000000010fb9ccc0 TRB 000000010aea6650 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234481: xhci_handle_event: EVENT: @0x000000010fb9ccd0 TRB 000000010aea6660 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234482: xhci_handle_event: EVENT: @0x000000010fb9cce0 TRB 000000010aea6680 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234482: xhci_handle_event: EVENT: @0x000000010fb9ccf0 TRB 000000010aea6690 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234482: xhci_handle_event: EVENT: @0x000000010fb9cd00 TRB 000000010aea66a0 status 'Short Packet' len 1024 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234482: xhci_handle_event: EVENT: @0x000000010fb9cd10 TRB 000000010aea66b0 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234607: xhci_handle_event: EVENT: @0x000000010fb9cd20 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.234609: xhci_handle_event: EVENT: @0x000000010fb9cd30 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62734   [000] d.h1. 27997.731486: xhci_handle_event: EVENT: @0x000000010fb9ce20 TRB 000000010aea7c60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731486: xhci_handle_event: EVENT: @0x000000010fb9ce30 TRB 000000010aea7c80 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731487: xhci_handle_event: EVENT: @0x000000010fb9ce40 TRB 000000010aea7c90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731487: xhci_handle_event: EVENT: @0x000000010fb9ce50 TRB 000000010aea7cb0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731487: xhci_handle_event: EVENT: @0x000000010fb9ce60 TRB 000000010aea7cc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731487: xhci_handle_event: EVENT: @0x000000010fb9ce70 TRB 000000010aea7ce0 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731607: xhci_handle_event: EVENT: @0x000000010fb9ce80 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 27997.731609: xhci_handle_event: EVENT: @0x000000010fb9ce90 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62734   [000] d.h1. 28000.481485: xhci_handle_event: EVENT: @0x000000010fb9dee0 TRB 000000010aea7300 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28000.481485: xhci_handle_event: EVENT: @0x000000010fb9def0 TRB 000000010aea7320 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28000.481485: xhci_handle_event: EVENT: @0x000000010fb9df00 TRB 000000010aea7330 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28000.481486: xhci_handle_event: EVENT: @0x000000010fb9df10 TRB 000000010aea7350 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28000.481486: xhci_handle_event: EVENT: @0x000000010fb9df20 TRB 000000010aea7360 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28000.481486: xhci_handle_event: EVENT: @0x000000010fb9df30 TRB 000000010aea7380 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28000.481607: xhci_handle_event: EVENT: @0x000000010fb9df40 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28000.481611: xhci_handle_event: EVENT: @0x000000010fb9df50 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62734   [000] dlh1. 28001.565695: xhci_handle_event: EVENT: @0x000000010fb9d0e0 TRB 000000010aea63b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] dlh1. 28001.565696: xhci_handle_event: EVENT: @0x000000010fb9d0f0 TRB 000000010aea63c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] dlh1. 28001.565696: xhci_handle_event: EVENT: @0x000000010fb9d100 TRB 000000010aea63e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28001.566109: xhci_handle_event: EVENT: @0x000000010fb9d110 TRB 000000010aea63f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28001.566110: xhci_handle_event: EVENT: @0x000000010fb9d120 TRB 000000010aea6410 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28001.566110: xhci_handle_event: EVENT: @0x000000010fb9d130 TRB 000000010aea6420 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28001.566234: xhci_handle_event: EVENT: @0x000000010fb9d140 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28001.566237: xhci_handle_event: EVENT: @0x000000010fb9d150 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62730   [000] d.h1. 28004.049862: xhci_handle_event: EVENT: @0x000000010fb9df90 TRB 000000010aea71b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049862: xhci_handle_event: EVENT: @0x000000010fb9dfa0 TRB 000000010aea71d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049862: xhci_handle_event: EVENT: @0x000000010fb9dfb0 TRB 000000010aea71e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049862: xhci_handle_event: EVENT: @0x000000010fb9dfc0 TRB 000000010aea7200 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049863: xhci_handle_event: EVENT: @0x000000010fb9dfd0 TRB 000000010aea7210 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049863: xhci_handle_event: EVENT: @0x000000010fb9dfe0 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049868: xhci_handle_event: EVENT: @0x000000010fb9dff0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62730   [000] d.h1. 28004.049870: xhci_handle_event: EVENT: @0x000000010fb9c000 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 28004.049873: xhci_handle_event: EVENT: @0x000000010fb9c010 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
 systemd-journal-866     [000] d.h1. 28011.266736: xhci_handle_event: EVENT: @0x000000010fb9d1c0 TRB 000000010aea6bc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266736: xhci_handle_event: EVENT: @0x000000010fb9d1d0 TRB 000000010aea6bd0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266737: xhci_handle_event: EVENT: @0x000000010fb9d1e0 TRB 000000010aea6bf0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266737: xhci_handle_event: EVENT: @0x000000010fb9d1f0 TRB 000000010aea6c00 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266737: xhci_handle_event: EVENT: @0x000000010fb9d200 TRB 000000010aea6c20 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266737: xhci_handle_event: EVENT: @0x000000010fb9d210 TRB 000000010aea6c30 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266861: xhci_handle_event: EVENT: @0x000000010fb9d220 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28011.266865: xhci_handle_event: EVENT: @0x000000010fb9d230 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
    .obs-wrapped-62913   [000] d.h1. 28012.198864: xhci_handle_event: EVENT: @0x000000010fb9d7a0 TRB 000000010aea6990 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198864: xhci_handle_event: EVENT: @0x000000010fb9d7b0 TRB 000000010aea69b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198865: xhci_handle_event: EVENT: @0x000000010fb9d7c0 TRB 000000010aea69c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198865: xhci_handle_event: EVENT: @0x000000010fb9d7d0 TRB 000000010aea69e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198865: xhci_handle_event: EVENT: @0x000000010fb9d7e0 TRB 000000010aea69f0 status 'Short Packet' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198865: xhci_handle_event: EVENT: @0x000000010fb9d7f0 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198871: xhci_handle_event: EVENT: @0x000000010fb9d800 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
    .obs-wrapped-62913   [000] d.h1. 28012.198874: xhci_handle_event: EVENT: @0x000000010fb9d810 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
--
 libobs: graphic-62940   [000] d.h2. 28013.781448: xhci_handle_event: EVENT: @0x000000010fb9cbd0 TRB 000000010aea71a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 libobs: graphic-62940   [000] d.h2. 28013.781448: xhci_handle_event: EVENT: @0x000000010fb9cbe0 TRB 000000010aea71b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 libobs: graphic-62940   [000] d.h2. 28013.781448: xhci_handle_event: EVENT: @0x000000010fb9cbf0 TRB 000000010aea71d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28013.781736: xhci_handle_event: EVENT: @0x000000010fb9cc00 TRB 000000010aea71e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28013.781737: xhci_handle_event: EVENT: @0x000000010fb9cc10 TRB 000000010aea71f0 status 'Short Packet' len 5120 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 28013.781861: xhci_handle_event: EVENT: @0x000000010fb9cc20 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 28013.781866: xhci_handle_event: EVENT: @0x000000010fb9cc30 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
            grep-62688   [000] d.h1. 28013.781869: xhci_handle_event: EVENT: @0x000000010fb9cc40 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
--
 systemd-journal-866     [000] d.h1. 28014.847863: xhci_handle_event: EVENT: @0x000000010fb9d440 TRB 000000010aea7440 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847863: xhci_handle_event: EVENT: @0x000000010fb9d450 TRB 000000010aea7450 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847863: xhci_handle_event: EVENT: @0x000000010fb9d460 TRB 000000010aea7470 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847864: xhci_handle_event: EVENT: @0x000000010fb9d470 TRB 000000010aea7480 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847864: xhci_handle_event: EVENT: @0x000000010fb9d480 TRB 000000010aea74a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847864: xhci_handle_event: EVENT: @0x000000010fb9d490 TRB 000000010aea74b0 status 'Missed Service Error' len 9216 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847987: xhci_handle_event: EVENT: @0x000000010fb9d4a0 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28014.847990: xhci_handle_event: EVENT: @0x000000010fb9d4b0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62731   [000] d.h1. 28015.753454: xhci_handle_event: EVENT: @0x000000010fb9cc90 TRB 000000010aea7e30 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 28015.753454: xhci_handle_event: EVENT: @0x000000010fb9cca0 TRB 000000010aea7e40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 28015.753454: xhci_handle_event: EVENT: @0x000000010fb9ccb0 TRB 000000010aea7e60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 28015.753455: xhci_handle_event: EVENT: @0x000000010fb9ccc0 TRB 000000010aea7e70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62731   [000] d.h1. 28015.753455: xhci_handle_event: EVENT: @0x000000010fb9ccd0 TRB 000000010aea7e90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] d.h1. 28015.753612: xhci_handle_event: EVENT: @0x000000010fb9cce0 TRB 000000010aea7ea0 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h21 28015.753737: xhci_handle_event: EVENT: @0x000000010fb9ccf0 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h21 28015.753740: xhci_handle_event: EVENT: @0x000000010fb9cd00 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62733   [000] d.h1. 28022.929454: xhci_handle_event: EVENT: @0x000000010fb9d590 TRB 000000010aea7950 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 28022.929454: xhci_handle_event: EVENT: @0x000000010fb9d5a0 TRB 000000010aea7960 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 28022.929454: xhci_handle_event: EVENT: @0x000000010fb9d5b0 TRB 000000010aea7980 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 28022.929455: xhci_handle_event: EVENT: @0x000000010fb9d5c0 TRB 000000010aea7990 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 28022.929455: xhci_handle_event: EVENT: @0x000000010fb9d5d0 TRB 000000010aea79b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
   kworker/u33:3-62799   [000] d.h2. 28022.929617: xhci_handle_event: EVENT: @0x000000010fb9d5e0 TRB 000000010aea79c0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 28022.929738: xhci_handle_event: EVENT: @0x000000010fb9d5f0 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62733   [000] d.h1. 28022.929741: xhci_handle_event: EVENT: @0x000000010fb9d600 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62733   [000] d.h1. 28023.817454: xhci_handle_event: EVENT: @0x000000010fb9c4f0 TRB 000000010aea7650 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818114: xhci_handle_event: EVENT: @0x000000010fb9c500 TRB 000000010aea7660 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818115: xhci_handle_event: EVENT: @0x000000010fb9c510 TRB 000000010aea7680 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818115: xhci_handle_event: EVENT: @0x000000010fb9c520 TRB 000000010aea7690 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818115: xhci_handle_event: EVENT: @0x000000010fb9c530 TRB 000000010aea76b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818115: xhci_handle_event: EVENT: @0x000000010fb9c540 TRB 000000010aea76c0 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818239: xhci_handle_event: EVENT: @0x000000010fb9c550 TRB 0000000000000000 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28023.818241: xhci_handle_event: EVENT: @0x000000010fb9c560 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62733   [000] d.h1. 28026.431990: xhci_handle_event: EVENT: @0x000000010fb9d7a0 TRB 000000010aea6660 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.431990: xhci_handle_event: EVENT: @0x000000010fb9d7b0 TRB 000000010aea6680 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.431990: xhci_handle_event: EVENT: @0x000000010fb9d7c0 TRB 000000010aea6690 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.431990: xhci_handle_event: EVENT: @0x000000010fb9d7d0 TRB 000000010aea66b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.431991: xhci_handle_event: EVENT: @0x000000010fb9d7e0 TRB 000000010aea66c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.431991: xhci_handle_event: EVENT: @0x000000010fb9d7f0 TRB 000000010aea66e0 status 'Missed Service Error' len 5120 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.432113: xhci_handle_event: EVENT: @0x000000010fb9d800 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62733   [000] d.h1. 28026.432116: xhci_handle_event: EVENT: @0x000000010fb9d810 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:C
--
 systemd-journal-866     [000] d.h1. 28031.414118: xhci_handle_event: EVENT: @0x000000010fb9dd00 TRB 000000010aea6e30 status 'Short Packet' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414865: xhci_handle_event: EVENT: @0x000000010fb9dd10 TRB 000000010aea6e40 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414866: xhci_handle_event: EVENT: @0x000000010fb9dd20 TRB 000000010aea6e60 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414866: xhci_handle_event: EVENT: @0x000000010fb9dd30 TRB 000000010aea6e70 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414866: xhci_handle_event: EVENT: @0x000000010fb9dd40 TRB 000000010aea6e90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414866: xhci_handle_event: EVENT: @0x000000010fb9dd50 TRB 000000010aea6ea0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414991: xhci_handle_event: EVENT: @0x000000010fb9dd60 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28031.414994: xhci_handle_event: EVENT: @0x000000010fb9dd70 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
 systemd-journal-866     [000] d.h1. 28037.164619: xhci_handle_event: EVENT: @0x000000010fb9d2b0 TRB 000000010aea77f0 status 'Short Packet' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
 systemd-journal-866     [000] d.h1. 28037.164619: xhci_handle_event: EVENT: @0x000000010fb9d2c0 TRB 000000010aea7800 status 'Short Packet' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28037.165242: xhci_handle_event: EVENT: @0x000000010fb9d2d0 TRB 000000010aea7810 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28037.165243: xhci_handle_event: EVENT: @0x000000010fb9d2e0 TRB 000000010aea7830 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28037.165243: xhci_handle_event: EVENT: @0x000000010fb9d2f0 TRB 000000010aea7840 status 'Short Packet' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28037.165244: xhci_handle_event: EVENT: @0x000000010fb9d300 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28037.165248: xhci_handle_event: EVENT: @0x000000010fb9d310 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28037.165251: xhci_handle_event: EVENT: @0x000000010fb9d320 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62734   [000] d.h1. 28042.033119: xhci_handle_event: EVENT: @0x000000010fb9dc30 TRB 000000010aea6930 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28042.033120: xhci_handle_event: EVENT: @0x000000010fb9dc40 TRB 000000010aea6950 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28042.033120: xhci_handle_event: EVENT: @0x000000010fb9dc50 TRB 000000010aea6960 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28042.033120: xhci_handle_event: EVENT: @0x000000010fb9dc60 TRB 000000010aea6980 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28042.033120: xhci_handle_event: EVENT: @0x000000010fb9dc70 TRB 000000010aea6990 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62734   [000] d.h1. 28042.033121: xhci_handle_event: EVENT: @0x000000010fb9dc80 TRB 000000010aea69b0 status 'Missed Service Error' len 5120 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28042.033242: xhci_handle_event: EVENT: @0x000000010fb9dc90 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
 systemd-journal-866     [000] d.h1. 28042.033246: xhci_handle_event: EVENT: @0x000000010fb9dca0 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62734   [000] d.h1. 28042.436499: xhci_handle_event: EVENT: @0x000000010fb9cd70 TRB 000000010aea78d0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436499: xhci_handle_event: EVENT: @0x000000010fb9cd80 TRB 000000010aea78f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436499: xhci_handle_event: EVENT: @0x000000010fb9cd90 TRB 000000010aea7900 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436500: xhci_handle_event: EVENT: @0x000000010fb9cda0 TRB 000000010aea7920 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436500: xhci_handle_event: EVENT: @0x000000010fb9cdb0 TRB 000000010aea7930 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436500: xhci_handle_event: EVENT: @0x000000010fb9cdc0 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436508: xhci_handle_event: EVENT: @0x000000010fb9cdd0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436511: xhci_handle_event: EVENT: @0x000000010fb9cde0 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62734   [000] d.h1. 28042.436513: xhci_handle_event: EVENT: @0x000000010fb9cdf0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62735   [000] d.h1. 28046.749204: xhci_handle_event: EVENT: @0x000000010fb9c910 TRB 000000010aea6860 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28046.749205: xhci_handle_event: EVENT: @0x000000010fb9c920 TRB 000000010aea6870 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28046.749205: xhci_handle_event: EVENT: @0x000000010fb9c930 TRB 000000010aea6890 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28046.749205: xhci_handle_event: EVENT: @0x000000010fb9c940 TRB 000000010aea68a0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28046.749205: xhci_handle_event: EVENT: @0x000000010fb9c950 TRB 000000010aea68c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
   kworker/u33:3-62799   [000] d.h1. 28046.749368: xhci_handle_event: EVENT: @0x000000010fb9c960 TRB 000000010aea68d0 status 'Missed Service Error' len 7168 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28046.749494: xhci_handle_event: EVENT: @0x000000010fb9c970 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28046.749497: xhci_handle_event: EVENT: @0x000000010fb9c980 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62735   [000] d.h1. 28049.481871: xhci_handle_event: EVENT: @0x000000010fb9da00 TRB 000000010aea7250 status 'Short Packet' len 27648 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.481871: xhci_handle_event: EVENT: @0x000000010fb9da10 TRB 000000010aea7260 status 'Short Packet' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.482120: xhci_handle_event: EVENT: @0x000000010fb9da20 TRB 000000010aea7270 status 'Short Packet' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.482121: xhci_handle_event: EVENT: @0x000000010fb9da30 TRB 000000010aea7280 status 'Short Packet' len 25600 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.482121: xhci_handle_event: EVENT: @0x000000010fb9da40 TRB 000000010aea7290 status 'Short Packet' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.482369: xhci_handle_event: EVENT: @0x000000010fb9da50 TRB 000000010aea72a0 status 'Missed Service Error' len 11264 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.482495: xhci_handle_event: EVENT: @0x000000010fb9da60 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62735   [000] d.h1. 28049.482497: xhci_handle_event: EVENT: @0x000000010fb9da70 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62730   [000] d.h1. 28053.517209: xhci_handle_event: EVENT: @0x000000010fb9d190 TRB 000000010aea70b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] dlh1. 28053.517745: xhci_handle_event: EVENT: @0x000000010fb9d1a0 TRB 000000010aea70c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] dlh1. 28053.517745: xhci_handle_event: EVENT: @0x000000010fb9d1b0 TRB 000000010aea70e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] dlh1. 28053.517746: xhci_handle_event: EVENT: @0x000000010fb9d1c0 TRB 000000010aea70f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62730   [000] dlh1. 28053.517746: xhci_handle_event: EVENT: @0x000000010fb9d1d0 TRB 000000010aea7100 status 'Short Packet' len 3072 slot 7 ep 3 type 'Transfer Event' flags e:c
      PTY reader-3507    [000] d.h1. 28053.517870: xhci_handle_event: EVENT: @0x000000010fb9d1e0 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:c
      PTY reader-3507    [000] d.h1. 28053.517875: xhci_handle_event: EVENT: @0x000000010fb9d1f0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
      PTY reader-3507    [000] d.h1. 28053.517877: xhci_handle_event: EVENT: @0x000000010fb9d200 TRB 0000000000000000 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
--
   v4l2: capture-62988   [000] dlh1. 28056.781874: xhci_handle_event: EVENT: @0x000000010fb9d770 TRB 000000010aea6ac0 status 'Short Packet' len 27648 slot 7 ep 3 type 'Transfer Event' flags e:C
   v4l2: capture-62988   [000] dlh1. 28056.781874: xhci_handle_event: EVENT: @0x000000010fb9d780 TRB 000000010aea6ad0 status 'Short Packet' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 28056.782497: xhci_handle_event: EVENT: @0x000000010fb9d790 TRB 000000010aea6ae0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 28056.782498: xhci_handle_event: EVENT: @0x000000010fb9d7a0 TRB 000000010aea6b00 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 28056.782498: xhci_handle_event: EVENT: @0x000000010fb9d7b0 TRB 000000010aea6b10 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 28056.782499: xhci_handle_event: EVENT: @0x000000010fb9d7c0 TRB 000000010aea6b30 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 28056.782621: xhci_handle_event: EVENT: @0x000000010fb9d7d0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62731   [000] d.h1. 28056.782625: xhci_handle_event: EVENT: @0x000000010fb9d7e0 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62736   [000] d.h1. 28063.657214: xhci_handle_event: EVENT: @0x000000010fb9d720 TRB 000000010aea6350 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657214: xhci_handle_event: EVENT: @0x000000010fb9d730 TRB 000000010aea6360 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657215: xhci_handle_event: EVENT: @0x000000010fb9d740 TRB 000000010aea6380 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657497: xhci_handle_event: EVENT: @0x000000010fb9d750 TRB 000000010aea6390 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657498: xhci_handle_event: EVENT: @0x000000010fb9d760 TRB 000000010aea63a0 status 'Short Packet' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657622: xhci_handle_event: EVENT: @0x000000010fb9d770 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657629: xhci_handle_event: EVENT: @0x000000010fb9d780 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28063.657631: xhci_handle_event: EVENT: @0x000000010fb9d790 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
--
          stress-62736   [000] d.h1. 28072.132751: xhci_handle_event: EVENT: @0x000000010fb9dd50 TRB 000000010aea7090 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132752: xhci_handle_event: EVENT: @0x000000010fb9dd60 TRB 000000010aea70b0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132752: xhci_handle_event: EVENT: @0x000000010fb9dd70 TRB 000000010aea70c0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132752: xhci_handle_event: EVENT: @0x000000010fb9dd80 TRB 000000010aea70e0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132752: xhci_handle_event: EVENT: @0x000000010fb9dd90 TRB 000000010aea70f0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132753: xhci_handle_event: EVENT: @0x000000010fb9dda0 TRB 000000010aea7110 status 'Missed Service Error' len 6144 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132874: xhci_handle_event: EVENT: @0x000000010fb9ddb0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:c
          stress-62736   [000] d.h1. 28072.132877: xhci_handle_event: EVENT: @0x000000010fb9ddc0 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:c
--
          stress-62736   [000] d.h1. 28075.853500: xhci_handle_event: EVENT: @0x000000010fb9cf60 TRB 000000010aea7f90 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853501: xhci_handle_event: EVENT: @0x000000010fb9cf70 TRB 000000010aea7fb0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853501: xhci_handle_event: EVENT: @0x000000010fb9cf80 TRB 000000010aea7fc0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853501: xhci_handle_event: EVENT: @0x000000010fb9cf90 TRB 000000010aea7fe0 status 'Success' len 0 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853502: xhci_handle_event: EVENT: @0x000000010fb9cfa0 TRB 000000010aea6000 status 'USB Transaction Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853626: xhci_handle_event: EVENT: @0x000000010fb9cfb0 TRB 0000000000000000 status 'Missed Service Error' len 8192 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853629: xhci_handle_event: EVENT: @0x000000010fb9cfc0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853632: xhci_handle_event: EVENT: @0x000000010fb9cfd0 TRB 0000000000000000 status 'Missed Service Error' len 10240 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853634: xhci_handle_event: EVENT: @0x000000010fb9cfe0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853636: xhci_handle_event: EVENT: @0x000000010fb9cff0 TRB 0000000000000000 status 'Missed Service Error' len 12288 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853638: xhci_handle_event: EVENT: @0x000000010fb9d000 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853640: xhci_handle_event: EVENT: @0x000000010fb9d010 TRB 0000000000000000 status 'Missed Service Error' len 14336 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853642: xhci_handle_event: EVENT: @0x000000010fb9d020 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853644: xhci_handle_event: EVENT: @0x000000010fb9d030 TRB 0000000000000000 status 'Missed Service Error' len 16384 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853646: xhci_handle_event: EVENT: @0x000000010fb9d040 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853647: xhci_handle_event: EVENT: @0x000000010fb9d050 TRB 0000000000000000 status 'Missed Service Error' len 18432 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853649: xhci_handle_event: EVENT: @0x000000010fb9d060 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853651: xhci_handle_event: EVENT: @0x000000010fb9d070 TRB 0000000000000000 status 'Missed Service Error' len 20480 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853653: xhci_handle_event: EVENT: @0x000000010fb9d080 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853655: xhci_handle_event: EVENT: @0x000000010fb9d090 TRB 0000000000000000 status 'Missed Service Error' len 22528 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853657: xhci_handle_event: EVENT: @0x000000010fb9d0a0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853659: xhci_handle_event: EVENT: @0x000000010fb9d0b0 TRB 0000000000000000 status 'Missed Service Error' len 24576 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853661: xhci_handle_event: EVENT: @0x000000010fb9d0c0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853662: xhci_handle_event: EVENT: @0x000000010fb9d0d0 TRB 0000000000000000 status 'Missed Service Error' len 26624 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853664: xhci_handle_event: EVENT: @0x000000010fb9d0e0 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853666: xhci_handle_event: EVENT: @0x000000010fb9d0f0 TRB 0000000000000000 status 'Missed Service Error' len 28672 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853668: xhci_handle_event: EVENT: @0x000000010fb9d100 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853670: xhci_handle_event: EVENT: @0x000000010fb9d110 TRB 0000000000000000 status 'Missed Service Error' len 30720 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853672: xhci_handle_event: EVENT: @0x000000010fb9d120 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853674: xhci_handle_event: EVENT: @0x000000010fb9d130 TRB 0000000000000000 status 'Missed Service Error' len 32768 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853675: xhci_handle_event: EVENT: @0x000000010fb9d140 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853677: xhci_handle_event: EVENT: @0x000000010fb9d150 TRB 0000000000000000 status 'Missed Service Error' len 2048 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853679: xhci_handle_event: EVENT: @0x000000010fb9d160 TRB 0000000000000000 status 'Missed Service Error' len 33792 slot 7 ep 3 type 'Transfer Event' flags e:C
          stress-62736   [000] d.h1. 28075.853681: xhci_handle_event: EVENT: @0x000000010fb9d170 TRB 0000000000000000 status 'Missed Service Error' len 4096 slot 7 ep 3 type 'Transfer Event' flags e:C
--

Re: Regression: webcam freezing since Linux 6.15

[Michal Pecio]

On Wed, 5 Aug 2026 14:11:20 -0700, Bart Nagel wrote:
> OK. Attached are the first ~700 lines of the trace file.
> 
> That whole thing is 17M, and is here for 48 hours from now in case it
> is more illuminating: https://tmpfiles.org/wAwAIQxuuahs/trace.txt

It seems that Missed Service Error pointers are about equally likely to
be 0x10 or 0x20 after the previous event.

And the events are usually Success, Short Packet is less common.

Considering that also roughly half of TDs are 0x20 long, we can choose
to be optimists and assume that (when it chooses not to report zero),
your HC actually reports correct addresses, except for the known narrow
problem case of MSE after Short Packet on an early TRB.

Or we can choose to be pessimists and say that 0x20 can be bogus too,
and then we wrongly skip two TDs instead of one, but three are always
missed at a time (for some reason) so no worry, until something will
change and suddenly only one TD is missed.

Not sure if I have any answer which option is true without another test
patch and compilation cycle. Maybe let's be optimistic if it works and
no errors are logged, only dynamic debug noise.

Regards,
Michal

Re: Regression: webcam freezing since Linux 6.15

[Bart Nagel]

Addendum to my previous reply:

At 2026-07-23 00:22:56 +0200, Michal Pecio wrote:
> What's the affected xHCI controller? You can find its PCI address with
> cat /sys/bus/usb/devices/usb2/serial
> and then use lspci. Make sure that the camera is stil on bus 2 - these
> numbers sometimes change after reboot.

I just realized I missed the part about "then use lspci".

    00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31)

Thanks.