From: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>
To: Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: Re: xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 1
Date: Wed, 22 Jul 2015 16:12:58 +0200
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[sorry, resend from different email - vger postmaster team has stupid filters 
in place]

On Tuesday 21 of July 2015, Mathias Nyman wrote:
> On 20.07.2015 23:13, Arkadiusz Miskiewicz wrote:
> > On Saturday 18 of July 2015, Arkadiusz Miskiewicz wrote:
> >> Hi.
> >> 
> >> I'm on 4.2.0-rc2-00077-gf760b87 kernel and while trying to copy some
> >> file from usb storage (sata disk behind sata-usb bridge or pendrive;
> >> hapens in
> > 
> >> both cases) copying process hangs just early after start with:
> > Looks like suspend & resume is enough. Reloading bluetooth firmware done
> > by kernel triggers problem:
> > 
> > [  106.302783] rtc_cmos 00:02: System wakeup disabled by ACPI
> > [  106.313280] PM: resume of devices complete after 3003.032 msecs
> > [  106.314079] Restarting tasks ... done.
> > [  106.326434] Bluetooth: hci0: read Intel version: 370710018002030d00
> > [  106.330422] Bluetooth: hci0: Intel Bluetooth firmware file:
> > intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq [  106.398223] xhci_hcd
> > 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD
> > ep_index 0 comp_code 1
> 
> Looks like we get an event for a really old transfer for some reason, it
> should probably be handled already.
> 
> I got a patch that adds more paranoid checks for TRB cancel, which has been
> one major reasons for the "Transfer event TRB DMA ptr not part of current
> TD" Errors. It also adds some logging to show what's went wrong. (patch
> attached, applies on 4.2-rc3) Can you see if it helps?

It doesn't unfortunately. 4.2.0-rc3-00017-gd725e66 + that patch
-> dmesg http://sprunge.us/PDIE

around 91s - after resume from ram bluetooth driver reloads

around 754s - tried to copy data from external usb disk


> If it doesn't, then adding xhci debugging could give us some clue:
> echo -n 'module xhci_hcd =p' > /sys/kernel/debug/dynamic_debug/control

Ok, http://sprunge.us/GiHX

mounted fs around 1347s and started copying; TRB problems were still there but 
file was being copied (in bursts)

> You said 3.19.3 works fine, but 4.0.8 and 4.2-rc2 fail, any chance you
> could bisect it?

Unfortunately some kernels around 3.19 don't even boot (grub says it loads 
initrd and no progress from that) - some commit fixed that but no idea which 
one.

> Thanks
> -Mathias

-- 
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )
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