On Wed, Aug 6, 2008 at 8:55 PM, Andy Walls <[EMAIL PROTECTED]> wrote: > On Wed, 2008-08-06 at 06:57 -0400, Brandon Jenkins wrote: >> On Tue, Aug 5, 2008 at 9:29 PM, Andy Walls <[EMAIL PROTECTED]> wrote: >> > On Tue, 2008-08-05 at 21:04 -0400, Brandon Jenkins wrote: >> >> Hi All >> >> >> >> I am running kernel 2.6.26 on Ubuntu 8.04. Any thoughts? >> > >> > I ran into a similar Oops in the same function on 23 July. I had it at >> > a lower priority since no one had complained about it and it seems rare. >> > >> > I'll try and get to it before Saturday morning. If anyone wants to >> > submit a patch before then, I'll review it ASAP after receipt. >> > >> > Regards, >> > Andy >> > >> >> Thanks in advance >> >> >> >> Brandon >> >> > >> >> [35037.080852] Code: 74 22 31 c9 0f 1f 80 00 00 00 00 48 89 c8 48 03 >> >> 47 28 8b 10 0f ca 89 10 8d 41 04 48 83 c1 04 39 47 30 77 e7 f3 c3 0f >> >> 1f 44 00 00 <4c> 8b 0e 49 89 d2 49 8b 41 08 49 8b 11 48 89 42 08 48 89 >> >> 10 49 >> >> [35037.080976] RIP [<ffffffffa01e4180>] >> >> :cx18:cx18_queue_move_buf+0x0/0xa0 >> >> [35037.080992] RSP <ffff810217c4be50> >> >> [35037.081000] CR2: 0000000000000000 >> >> [35037.081192] ---[ end trace 10100555b3a0d104 ]--- >> >> [35037.090147] note: java[15894] exited with preempt_count 1 >> >> >> >> -- >> >> video4linux-list mailing list >> >> Unsubscribe mailto:[EMAIL PROTECTED] >> >> https://www.redhat.com/mailman/listinfo/video4linux-list >> >> >> > >> > >> Here's another one. Is there something I could do to lessen the issue >> while a patch is being worked? Rebuild the kernel without preempting? > > > Nope. The problem I have has to do with per stream queue and buffer > accounting being slightly but you'll only notice when it's being freed. > > I suspect you have the same problem, but I can't tell for sure as you > system is compiling the code differently than mine. > > Could you please send the output of > > $ cd v4l-dvb > $ objdump -D v4l/cx18-queue.o > > from the offending build to me. That way I can see the assembled > machine code and verify where in the function the NULL dereference is > happening. > > If you have the exact same problem as me, I can give you a "band-aid" > patch which will lessen the problem in short order. It'll be a band aid > because it won't fix the accounting problem though. I need to do more > extensive test and debug to find out where the accounting of buffers is > getting screwed up. > > Regards, > Andy
Andy, Reposting with the file hosted in my dropbox instead. I didn't realize there was a size limit on the devel list. Brandon https://dl.getdropbox.com/u/4976/cx18-queue.o.objdump.tar.gz -- video4linux-list mailing list Unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/video4linux-list _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
