On Sun, Aug 12, 2012 at 3:34 AM, Thomas Meyer <thomas at m3y3r.de> wrote:
> guilty driver is probably udl_fb.c > any ideas? > Hi Thomas, We were seeing similar issues in udlfb (the original fbdev version of this driver), which were fixed earlier this year by getting all rendering operations out of probe/disconnect -- those which might trigger fb_defio page faults in an inappropriate context, or be long-running. Here's some more detail: http://plugable.com/2012/06/21/displaylink-usb-devices-on-linux-kernel-3-4-0/comment-page-1/#comment-5896 Unfortunately, I haven't had time to get going with udl myself, so haven't been able to port and confirm. Thanks for raising and staying on this. Best wishes, Bernie [ 45.633336] RIP [<ffffffff8123becc>] fb_deferred_io_mkwrite+0xdc/0xf0 > [ 45.633336] RSP <ffff880126559c98> > [ 45.711547] ---[ end trace d4732d5a0bf375fb ]--- > [ 45.720961] released /dev/fb1 user=1 count=0 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20120812/b0095a33/attachment.html>
