Re: kern/22646: Panic in ohci_add_done()

[Andreas Gustafsson <gson%gson.org@localhost>]

The following reply was made to PR kern/22646; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/22646: Panic in ohci_add_done()
Date: Sat, 4 Dec 2010 13:34:00 +0200

 I tried to reproduce kern/22646 in -current using the releng
 201012022200Z i386 snapshot, an ALI PCI USB card (EHCI/OHCI),
 the same camera as in the original bug report, and gphoto2 from
 current pkgsrc.
 
 When I run "gphoto2 --port usb --debug --capture-image" twice in a row
 as in the original bug report, I no longer get an instant panic during
 the second run, but instead gphoto2 process hangs.  It takes two
 control-C presses to get a shell prompt back.  If I then run the
 command a third time, I get a crash, but a different one than before:
 now it's a kernel trap in usb_transfer_complete() rather than a panic
 in ohci_add_done().  Screnshot at
 
   http://www.gson.org/netbsd/bugs/22646/trap.jpg
 
 I'm not sure if this should still be considered the same bug, but in
 any case, NetBSD's USB stack is still broken.  I suspect it's still
 an ohci issue, because I have been unable to trigger a similar crash
 with uhci.
 -- 
 Andreas Gustafsson, gson%gson.org@localhost