Am Sonntag, den 12.08.2012, 14:22 -0700 schrieb Bernie Thompson: > On Sun, Aug 12, 2012 at 3:34 AM, Thomas Meyer <thomas@xxxxxxxx> 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 > > -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
