When trying to kill a mysteriously frozen "mplayer /dev/video1" with a ^C, I got a kernel oops. mplayer froze after I had done a few "v4l2-dbg -d /dev/video1 --log-status". mplayer had been running on the same TV channel for over and hour.
And just for full disclosure, I had been manipulating the cx23418's cx25843's analog front end registers pertaining to Sound IF on Input 8/Channel 3 with v4l2-dbg. I don't think that contributed to the oops though. -Andy Here are the details, let me know if you need more: Mar 1 21:08:02 palomino kernel: Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: Mar 1 21:08:02 palomino kernel: [<ffffffff882b4793>] :cx18:cx18_queue_move_buf+0x1d/0xaf Mar 1 21:08:02 palomino kernel: PGD 108e3067 PUD 35583067 PMD 0 Mar 1 21:08:02 palomino kernel: Oops: 0000 [1] SMP Mar 1 21:08:02 palomino kernel: CPU 1 Mar 1 21:08:02 palomino kernel: Modules linked in: ppdev lp aes nf_conntrack_netbios_ns ipt_LOG xt_state xt_tcpudp ipt_REJECT iptable_filter iptable_nat nf_ nat nf_conntrack_ipv4 nf_conntrack nfnetlink iptable_mangle ip_tables x_tables cpufreq_ondemand dm_multipath video output sbs battery ac arc4 ecb blkcipher m xl500x(U) s5h1409(U) cs5345(U) snd_atiixp snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq wm8775(U) snd_seq_device rt2500pci snd _pcm_oss rt2x00pci cx25840(U) cx18(U) rt2x00lib snd_mixer_oss tuner(U) tea5767(U) tda8290(U) tda18271(U) tda827x(U) tuner_xc2028(U) xc5000(U) tda9887(U) tune r_simple(U) mt20xx(U) tea5761(U) rfkill parport_pc ivtv(U) snd_pcm parport input_polldev snd_timer firewire_ohci dvb_core(U) i2c_algo_bit cx2341x(U) tveeprom (U) videodev(U) snd mac80211 firewire_core v4l2_common(U) pcspkr cfg80211 eeprom_93cx6 soundcore i2c_core snd_page_alloc 8139cp v4l1_compat(U) mii lirc_mceus b2(U) k8temp hwmon crc_itu_t button usblp lirc_dev(U) shpchp sr_mod cdrom sg dm_snapsh Mar 1 21:08:02 palomino kernel: t dm_zero dm_mirror dm_mod usb_storage pata_atiixp sata_sil ata_generic libata sd_mod scsi_mod ext3 jbd mbcache ehci_hcd ohc i_hcd uhci_hcd Mar 1 21:08:02 palomino kernel: Pid: 5554, comm: mplayer Not tainted 2.6.23.14-64.fc7 #1 Mar 1 21:08:02 palomino kernel: RIP: 0010:[<ffffffff882b4793>] [<ffffffff882b4793>] :cx18:cx18_queue_move_buf+0x1d/0xaf Mar 1 21:08:02 palomino kernel: RSP: 0018:ffff81003acafe28 EFLAGS: 00210096 Mar 1 21:08:02 palomino kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 Mar 1 21:08:02 palomino kernel: RDX: ffff8100387681e8 RSI: 0000000000000000 RDI: ffff810038768178 Mar 1 21:08:02 palomino kernel: RBP: ffff8100387681e8 R08: 0000000000000000 R09: ffff810015e773c0 Mar 1 21:08:02 palomino kernel: R10: ffff810001cb8e00 R11: ffffffff8124a66d R12: 0000000000000001 Mar 1 21:08:02 palomino kernel: R13: ffff8100387681e8 R14: ffff810038768178 R15: 0000000000000000 Mar 1 21:08:02 palomino kernel: FS: 00002aaaaaad6d70(0000) GS:ffff810001e38300(0000) knlGS:0000000000000000 Mar 1 21:08:02 palomino kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Mar 1 21:08:02 palomino kernel: CR2: 0000000000000000 CR3: 000000000f83e000 CR4: 00000000000006e0 Mar 1 21:08:02 palomino kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Mar 1 21:08:02 palomino kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Mar 1 21:08:02 palomino kernel: Process mplayer (pid: 5554, threadinfo ffff81003acae000, task ffff8100190d6820) Mar 1 21:08:02 palomino kernel: Stack: ffff810038768178 0000000000000000 ffff8100387681e8 0000000000000001 Mar 1 21:08:02 palomino kernel: 0000000000000000 0000000000030000 ffff810038768178 ffffffff882b48f1 Mar 1 21:08:02 palomino kernel: ffffffff001d0000 ffff8100387681a0 0000000000200246 00000001387681e8 Mar 1 21:08:02 palomino kernel: Call Trace: Mar 1 21:08:02 palomino kernel: [<ffffffff882b48f1>] :cx18:cx18_queue_move+0xcc/0x13a Mar 1 21:08:02 palomino kernel: [<ffffffff882b5a3f>] :cx18:cx18_release_stream+0x55/0x8c Mar 1 21:08:02 palomino kernel: [<ffffffff882b5e74>] :cx18:cx18_v4l2_close+0xf9/0x114 Mar 1 21:08:02 palomino kernel: [<ffffffff81098756>] __fput+0xc2/0x191 Mar 1 21:08:02 palomino kernel: [<ffffffff81095f72>] filp_close+0x5d/0x65 Mar 1 21:08:02 palomino kernel: [<ffffffff81097141>] sys_close+0x8c/0xc9 Mar 1 21:08:02 palomino kernel: [<ffffffff8100bd35>] tracesys+0xd5/0xda Mar 1 21:08:02 palomino kernel: Mar 1 21:08:02 palomino kernel: Mar 1 21:08:02 palomino kernel: Code: 48 8b 2e 48 8b 55 00 48 8b 45 08 48 89 ef 48 89 42 08 49 8b Mar 1 21:08:02 palomino kernel: RIP [<ffffffff882b4793>] :cx18:cx18_queue_move_buf+0x1d/0xaf Mar 1 21:08:02 palomino kernel: RSP <ffff81003acafe28> Mar 1 21:08:02 palomino kernel: CR2: 0000000000000000 _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
