|Summary:||xhci reset causes panic on SuperMicro A1SRi-2758F board|
|Product:||Base System||Reporter:||Adam Baxter <voltagex>|
|Component:||usb||Assignee:||freebsd-usb mailing list <usb>|
|Severity:||Affects Only Me||CC:||bz, hselasky, voltagex|
Description Adam Baxter 2016-10-29 12:43:05 UTC
Created attachment 176266 [details] Panic - shown via IPMI console Hi all, My system panics after approximately 2 hours of having an Android phone plugged in doing USB tethering. As far as I can tell I get an xhci reset and then the system panics because da0 also happens to be on that bus.
Comment 1 Adam Baxter 2016-10-29 12:46:16 UTC
Created attachment 176267 [details] USB disconnect/reset just before panic
Comment 5 Hans Petter Selasky 2016-10-29 15:30:12 UTC
Hi, Is this reproducible? Have you tried to reproduce on an 11-stable kernel? Basically the driver is detecting that the USB HC is not responding to a firmware command and tries to reset the XHCI which detaches all devices. As a natural cause the root file system which is da0 also disappears and a panic is expected. --HPS
Comment 6 Adam Baxter 2016-11-01 13:24:21 UTC
(In reply to Hans Petter Selasky from comment #5) Hi Hans, I'm trying to reproduce it, however this is difficult as it takes 2-16 hours for the bug to occur. Strangely, turning off soft journaling on the root filesystem allows the system to run for a lot longer before crashing. I've switched to another RNDIS device so that I can test for longer periods of time. I also may try to get the serial console going over the weekend so I don't have to use a screen recorder to get the trace. To be honest, it's unlikely I'll be able to get to a root cause for this issue - the setup I have is only while my main internet connection is down, awaiting repairs.
Comment 7 Adam Baxter 2016-11-02 13:42:13 UTC
Created attachment 176428 [details] second crash part 1 Second crash caught with soft journalling disabled.
Comment 8 Adam Baxter 2016-11-02 13:45:18 UTC
Created attachment 176429 [details] second crash, part 1
Comment 9 Adam Baxter 2016-11-02 13:45:51 UTC
Created attachment 176430 [details] second crash, part 2
Comment 10 Adam Baxter 2016-11-02 13:46:48 UTC
Created attachment 176431 [details] second crash, part 3
Comment 11 Bjoern A. Zeeb 2018-08-30 08:58:47 UTC
I keep getting this almost every night as of recently when trying to move data to an external disk: xhci0: Resetting controller^M^M (da1:umass-sim1:1:0:0): WRITE(10). CDB: 2a 00 00 00 e1 d0 00 00 10 00 ^M^M (da1:umass-sim1:1:0:0): CAM status: CCB request completed with an error^M^M (da1:umass-sim1:1:0:0): Retrying command^M^M (da1:umass-sim1:1:0:0): WRITE(10). CDB: 2a 00 00 00 e1 d0 00 00 10 00 ^M^M (da1:umass-sim1:1:0:0): CAM status: CCB request completed with an error^M^M (da1:umass-sim1:1:0:0): Retrying command^M^M uhub1: at usbus1, port 1, addr 1 (disconnected)^M^M ugen1.2: <Seagate Backup+ Hub> at usbus1 (disconnected)^M^M uhub2: at uhub1, port 2, addr 1 (disconnected)^M^M ugen1.3: <Seagate Backup+ Desk> at usbus1 (disconnected)^M^M umass1: at uhub1, port 5, addr 2 (disconnected)^M^M (da1:umass-sim1:1:0:0): WRITE(10). CDB: 2a 00 00 00 e1 d0 00 00 10 00 ^M^M (da1:umass-sim1:1:0:0): CAM status: CCB request completed with an error^M^M (da1:umass-sim1:1:0:0): Retrying command^M^M da1 at umass-sim1 bus 1 scbus8 target 0 lun 0^M^M ... Neither the plugged in media nor the kernel have changed in a few weeks however, so not sure what triggered it. The follow-up is a geom/file system panic. Is there a way to find out why xhci is resetting?
Comment 12 Hans Petter Selasky 2018-08-30 10:06:43 UTC
> Is there a way to find out why xhci is resetting? Try to set: hw.usb.xhci.debug=16 Or inspect the XHCI code for the reset call. There are a few cases currently for reset. --HPS