Re: kern/22218 (using a USB isochronous endpoint freezes kernel)

[Thomas Runge <coto%marsrakete.de@localhost>]

The following reply was made to PR kern/22218; it has been noted by GNATS.

From: Thomas Runge <coto%marsrakete.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
netbsd-bugs%NetBSD.org@localhost
Subject: Re: kern/22218 (using a USB isochronous endpoint freezes kernel)
Date: Thu, 9 Oct 2008 08:25:00 +0200 (CEST)

 On Wed, 8 Oct 2008, Jared D. McNeill wrote:
 
 > Date: Wed,  8 Oct 2008 18:20:04 +0000 (UTC)
 > From: Jared D. McNeill <jmcneill%invisible.ca@localhost>
 > Reply-To: gnats-bugs%NetBSD.org@localhost
 > To: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
 >     netbsd-bugs%NetBSD.org@localhost, coto%marsrakete.de@localhost
 > Subject: Re: kern/22218 (using a USB isochronous endpoint freezes kernel)
 > 
 > The following reply was made to PR kern/22218; it has been noted by GNATS.
 >
 > From: "Jared D. McNeill" <jmcneill%invisible.ca@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
 > netbsd-bugs%netbsd.org@localhost,
 >    coto%core.de@localhost
 > Subject: Re: kern/22218 (using a USB isochronous endpoint freezes kernel)
 > Date: Wed, 8 Oct 2008 14:18:58 -0400 (EDT)
 >
 > On Wed, 8 Oct 2008, Thomas Runge wrote:
 > > I kept the app running for a few days. This works quite nicely, as long,
 > > as there is no activity on this system. When I start a cvs update, the
 > > kernel will panic soon. This is my latest stacktrace:
 > >
 > > ugen_isoc_rintr(c1079100,c6e41374,0,1,0,e500,15c0,4,3c1,4) at 
 > > netbsd:ugen_isoc_rintr+0x56
 > > usb_transfer_complete(c1079100,15c0,20,a,3,c6e41380,c6509520,0,0,0) at 
 > > netbsd:usb_transfer_complete+0xba
 > > ohci_softintr(c6509524,0,30,c63b0010,c63c0010,0,1fc7be0,c0e9f080,0,c63bbda0)
 > >   at netbsd:ohci_softintr+0x543
 > > softint_dispatch(c74adae0,4,0,0,0,0,c63bbd90,c63bbbd8,c63bbc30,28) at 
 > > netbsd:softint_dispatch+0x7c
 > > DDB lost frame for netbsd:Xsoftintr+0x3d, trying 0xc63bbd88
 > > Xsoftintr() at netbsd:Xsoftintr+0x3d
 > > ---  interrupt  ---
 > > fatal page fault in supervisor mode
 > > trap type 6 code 0 eip c052f6f7 cs 8 eflags 10202 cr2 3c ilevel 8
 > > kernel: supervisor trap page fault, code=0
 > > Faulted in DDB;  continuing...
 > > db{0}>
 >
 > This looks identical to an issue I'm seeing with a USB ATSC tuner and
 > ehci(4). I suspect the ehci isoc code was based on the ohci and uhci
 > implementations.. are you able to try this camera on a uhci to see if you
 > can reproduce the same crash there?
 
 I'm afraid, I can't. I do not own any uhci hardware. This old laptop has
 ohci built-in, but I tried (on the same hardware) a USB2-PC-CARD. This
 one procides ehci and ohci. Same results.
 
 Do you know any hardware that is known to have uhci? Maybe I could
 try on a friends laptop.
 
 -- 
 Tom