Hi Patrick, On Fri, Jan 14, 2011 at 06:11:24PM +0100, Patrick Boettcher wrote: >On Wed, 12 Jan 2011, Mauro Carvalho Chehab wrote: >>Em 12-01-2011 11:17, Robin Humble escreveu: >>>this is basically a re-post of >>> http://www.linuxtv.org/pipermail/linux-dvb/2010-September/032744.html >>>which fixes an Oops when tuning eg. AVerMedia DVB-T Volar, Hauppauge >>>Nova-T, Winfast DTV. it seems to be quite commonly reported on this list. >>> >>> [ 809.128579] BUG: unable to handle kernel NULL pointer dereference at 0000000000000012 >>> [ 809.128586] IP: [<ffffffffa0013702>] i2c_transfer+0x16/0x124 [i2c_core] >>> [ 809.128598] PGD 669a7067 PUD 79e5f067 PMD 0 >>> [ 809.128604] Oops: 0000 [#1] SMP ... >Could you try this patch: >http://git.linuxtv.org/pb/media_tree.git?a=commit;h=80a5f1fdc6beb496347cbb297f9c1458c8cb9f50 >and report whether it solves the problem or not? yes, that patch works for me on linux-media's media-master branch, and also on fedora 2.6.35.10-72.fc14.x86_64. thanks for workng on this! it makes a lot of sense that the pid filtering fns are the root cause. please feel free to add this to your patch: Tested-by: Robin Humble <robin.humble+dvb@xxxxxxxxxx> and to scrap my patch. cheers, robin -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html