When I plug in a TV tuner that uses the em28xx driver, I get the oops listed below for x86_64. Note: 2.6.31-rc8 works OK, but I want a fix for this one so that I can bisect another regression that occurs between 2.6.29 and 2.6.31. If the device is plugged in when booting, the system hangs. ================================================================== BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 IP: [<ffffffffa02c7ac6>] tda9887_set_params+0xb/0x26 [tda9887] PGD 11ed14067 PUD 11ed13067 PMD 0 Oops: 0002 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:04.1/usb4/4-1/4-1:1.1/bInterfaceClass CPU 0 Modules linked in: tvp5150 em28xx(+) ir_common videobuf_vmalloc videobuf_core binfmt_misc snd_pcm_oss snd_mixer_oss snd_seq nfs lockd nfs_acl auth_rpcgss sunrpc cpufreq_conservative cpufreq_userspace cpufreq_powersave powernow_k8 fuse xfs exportfs loop dm_mod ide_cd_mod cdrom ide_gd_mod ata_generic pata_amd ide_pci_generic tuner_simple tuner_types snd_cmipci tda9887 tda8290 gameport tuner snd_pcm msp3400 snd_page_alloc snd_opl3_lib snd_timer snd_hwdep usbhid snd_mpu401_uart saa7115 hid snd_rawmidi snd_seq_device ivtv i2c_algo_bit cx2341x v4l2_common videodev snd v4l1_compat v4l2_compat_ioctl32 tveeprom i2c_nforce2 shpchp soundcore rtc_cmos usblp pci_hotplug forcedeth wmi rtc_core amd74xx floppy button serio_raw pcspkr rtc_lib i2c_core ide_core k8temp sg sd_mod crc_t10dif ehci_hcd ohci_hcd usbcore edd ahci libata scsi_mod ext3 mbcache jbd fan thermal processor thermal_sys hwmon Pid: 3426, comm: modprobe Not tainted 2.6.30.5 #3 System Product Name RIP: 0010:[<ffffffffa02c7ac6>] [<ffffffffa02c7ac6>] tda9887_set_params+0xb/0x26 [tda9887] RSP: 0018:ffff88011edc9978 EFLAGS: 00010283 RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88011edc9998 RDI: ffff8801206f7800 RBP: ffff88011edc99e8 R08: ffff88011edc9998 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000018600 R12: ffff8801206f7b80 R13: ffff8801206f7800 R14: 0000000000000000 R15: ffff8801206f7800 FS: 00007f073eb5c6f0(0000) GS:ffff880028022000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000038 CR3: 000000011f869000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process modprobe (pid: 3426, threadinfo ffff88011edc8000, task ffff8801159e4500) Stack: ffff88011edc99e8 ffffffffa02b3404 ffffffffa02b65fb 43ff88011edc0101 00000002000002c0 0000000000000001 0000000000000000 0effffff8026336f ffffffffa0495cf2 ffffffffa0495cf2 ffff8801206f7800 ffff8801206f7b80 Call Trace: [<ffffffffa02b3404>] ? set_freq+0x23e/0x287 [tuner] [<ffffffffa0495cf2>] ? em28xx_tuner_callback+0x0/0x23 [em28xx] [<ffffffffa0495cf2>] ? em28xx_tuner_callback+0x0/0x23 [em28xx] [<ffffffffa02b501f>] set_type+0x684/0x96a [tuner] [<ffffffffa0219db0>] ? v4l2_i2c_new_probed_subdev+0xd0/0xf8 [v4l2_common] [<ffffffffa02b58df>] tuner_s_type_addr+0xa5/0xf6 [tuner] [<ffffffffa0495af6>] em28xx_card_setup+0x65f/0x85b [em28xx] [<ffffffffa04951c8>] ? em28xx_i2c_register+0x3c4/0x410 [em28xx] [<ffffffffa0495cf2>] ? em28xx_tuner_callback+0x0/0x23 [em28xx] [<ffffffffa0496878>] em28xx_usb_probe+0x581/0x741 [em28xx] [<ffffffffa00ed3be>] usb_probe_interface+0x114/0x16d [usbcore] [<ffffffff803e7483>] driver_probe_device+0x97/0x13c [<ffffffff803e7580>] __driver_attach+0x58/0x7b [<ffffffff803e7528>] ? __driver_attach+0x0/0x7b [<ffffffff803e6d56>] bus_for_each_dev+0x4e/0x84 [<ffffffff803e72ff>] driver_attach+0x1c/0x1e [<ffffffff803e66ba>] bus_add_driver+0xf2/0x23b [<ffffffff803e785a>] driver_register+0xb3/0x121 [<ffffffffa00ed159>] usb_register_driver+0x80/0xe4 [usbcore] [<ffffffffa0164000>] ? em28xx_module_init+0x0/0x4d [em28xx] [<ffffffffa0164023>] em28xx_module_init+0x23/0x4d [em28xx] [<ffffffff8020905c>] do_one_initcall+0x56/0x12b [<ffffffff80255baf>] ? __blocking_notifier_call_chain+0x58/0x6a [<ffffffff80264fd6>] sys_init_module+0xa9/0x1cd [<ffffffff8020ba6b>] system_call_fastpath+0x16/0x1b Code: f5 ff ff 31 c0 c9 c3 48 8b 87 18 03 00 00 55 48 89 e5 c7 40 38 00 00 00 80 e8 9a f5 ff ff c9 c3 8b 46 04 48 8b 97 18 03 00 00 55 <89> 42 38 8b 46 08 48 89 e5 89 42 3c 48 8b 46 10 48 89 42 40 e8 RIP [<ffffffffa02c7ac6>] tda9887_set_params+0xb/0x26 [tda9887] RSP <ffff88011edc9978> CR2: 0000000000000038 ---[ end trace 0976a22e013b4dfa ]--- -- 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
