Arch Linux

USB3 xhci_hcd unstable with external storage and uas (with intel braswell usb3 based asrock SoC N3700)



Description:
Copying Files over usb3 to an external USB3 raid or USB3 case/adapter
freezes ca. every Minute and reports a xhci_hcd superspeed reset dmesg error.

With enabled UAS the connection might even fail completly since the superspeed resets cause an error in UAS protocoll. (I attached a log with the final UAS crash and stack trace)

When UAS is dissabled and only usb sotrage is used copying/writing works with decreased average speed due to the freezes.
But reading the files and comparing thm caused roughly 2-5 (changing) files /bits errors in 1,4TB data read.
(UAS was dissabled through: options usb-storage quirks=174c:1153:u in the modprobe.d )

But the data was written correctly with the usb_storage even with the freezes/resets just reading created those 2-10 missmatched file errors.
I tested the adapter + HDD and the written data over USB3 in 2 different laptops and there was no missmatch or superspeed resets for the whole 1,4TB data
1. with an Intel i7 Ivybridge Mobile laptop and USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04))
2. with an I5 Sandybridge Mobile with USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) ( this one I had to firmware update 2 years ago or so but since then no problems)

Since these other 2 Laptops didnt create any read errors a faulty or overheating adapter should not be the cause and only those superspeed resets of xhci_hcd seem left to blame.

I already provided more details of the testing in this post:
https://bbs.archlinux.org/viewtopic.php?pid=1606951#p1606951

lspci:
[bosco@atom ~]$ lspci
00:00.0 Host bridge: Intel Corporation Device 2280 (rev 21)
00:02.0 VGA compatible controller: Intel Corporation Device 22b1 (rev 21)
00:13.0 SATA controller: Intel Corporation Device 22a3 (rev 21)
00:14.0 USB controller: Intel Corporation Device 22b5 (rev 21) <---- USB controller
00:1a.0 Encryption controller: Intel Corporation Device 2298 (rev 21)
00:1b.0 Audio device: Intel Corporation Device 2284 (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 22c8 (rev 21)
00:1c.1 PCI bridge: Intel Corporation Device 22ca (rev 21)
00:1c.2 PCI bridge: Intel Corporation Device 22cc (rev 21)
00:1c.3 PCI bridge: Intel Corporation Device 22ce (rev 21)
00:1f.0 ISA bridge: Intel Corporation Device 229c (rev 21)
00:1f.3 SMBus: Intel Corporation Device 2292 (rev 21)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 11)
04:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA Controller (rev 02)


lsusb:
lsusb
Bus 002 Device 002: ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub <--- or maybe the the HUB chip used
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 046d:c318 Logitech, Inc. Illuminated Keyboard
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hu


Extract of Output of dmesg on copying data with UAS dissabled (goes on for pages or so since ~every Minute or so this happens):
[12567.182994] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12567.442719] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12568.306516] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12568.562820] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12603.018528] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12603.281292] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12603.707933] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12603.858131] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12604.194737] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12606.071628] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12606.668272] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd
[12606.968553] usb 2-1.3: reset SuperSpeed USB device number 3 using xhci_hcd




Additional info:
* package version(s)
linux 4.4.1-2

* config and/or log files etc.
1. log with UAS enabled with crash and stack trace after ~1,2TB written


Steps to reproduce:
1. running Linux kernel 4.4.1-2
2. have a Intel Braswell based ASRock N3700-ITX with current UEFI BIOS: v1.5
(maybe I will be able to test it also on a ASRock N3050B-ITX to verify that its a generall problem with the Intel controller or at least the ASM1074 SuperSpeed hub if its the same don't know yet...)
3. copy data to a USB3 HDD and check dmesg after some minutes