Ok looks like this fixed the dmesg bug report, and the hardware does now show up in relevant software, but it does not actually work. arecord reports this $ arecord -f cd -D plughw:2,0 -d 20 test.wav arecord: main:722: audio open error: No such device Which does make sense if the extra NULL check in the patch now never passes, media_snd_device_create is never reached. On Thu, Mar 24, 2016 at 1:45 PM, Greg KH <greg@xxxxxxxxx> wrote: > On Thu, Mar 24, 2016 at 01:34:32PM +0000, Ian T. Jacobsen wrote: >> [ 21.434822] BUG: unable to handle kernel NULL pointer dereference at >> 0000000000000014 [ 21.435516] IP: [<ffffffffc0392a4a>] >> usb_audio_probe+0x2ca/0x9a0 [snd_usb_audio] >> >> I have a PreSonus AudioBox iTwo causing this issue. >> I updated from torvalds git yesterday > > A patch has been sent to the sound mailing list for this: > http://lkml.kernel.org/g/1458045306-4170-1-git-send-email-nicstange@xxxxxxxxx > > It solved the issue for me, please let the developers of it know if it > didn't work for you. > > thanks, > > greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
