Messages in this thread | | | Subject | Re: [UDL] general protection fault in fb_deferred_io_mkwrite() | From | Thomas Meyer <> | Date | Sat, 18 Aug 2012 13:00:38 +0200 |
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Am Sonntag, den 12.08.2012, 14:22 -0700 schrieb Bernie Thompson: > On Sun, Aug 12, 2012 at 3:34 AM, Thomas Meyer <thomas@m3y3r.de> wrote: > guilty driver is probably udl_fb.c > any ideas? > > > Hi Thomas,
Hi Bernie!
> 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.
Okay, I see. I'll switch to FB_UDL for now and remove DRM_UDL from my config.
Is somebody working on porting commit https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=8d21547d3c9c3bc653261f26d554cfabc4a083de to the DRM_UDL driver?
In Airlie's tree seems to be no commit related to this:
http://cgit.freedesktop.org/~airlied/linux/
with kind regards thomas
> > > 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 > >
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