Em Sat, 13 May 2023 19:09:01 +0100 Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> escreveu: > Hi Lee, > > Em Thu, 9 Mar 2023 17:17:14 +0000 > Lee Jones <lee@xxxxxxxxxx> escreveu: > > > > > Still nothing heard from the author or any maintainer. > > > > > > We're currently lacking a sub-maintainer for dvb. Changes at the > > > DVB mutexes have been problematic and require tests on some > > > devices, specially on those with multiple frontends. > > > > > > I'll try to find some time to review and test those patches. > > > > Thank you Mauro, I fully appreciate the struggles and the effort. > > It took more time than I originally anticipated, as I had to setup > a way to test it here with some DVB-T devices, but I reviewed the > code and tested it. > > I'm placing the patches I picked at this series: > > https://lore.kernel.org/lkml/53558de2b5c4f4ee6bfcfbe34e27071c2d0073d5.1684000646.git.mchehab@xxxxxxxxxx/T/#t > > They seemed to work fine. I tested using two devices: > > USB ID 2013:0246 PCTV Systems PCTV 74E > USB ID 2040:5200 Hauppauge NovaT 500Stick > > The second one has two DVB-T independent devices on it. > > I did some tests of removing and re-inserting them with the > devices closed and with the device opened and streamed. I didn't > find any regressions. I didn't try to use kmemleak or KASAN to > detect UAF conditions, though. Did some tests today: neither KASAN nor kmemleak pointed any issue. I found a few issues on one of the patches: some mutex unbalance at dvb_frontend at the error path. Already updated the patches to fix it. Should be merging at the media subsystem today and send a PR upstream along the next week with the fixes. Regards, Mauro
