Re: Kernel oops with new IR modules

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Looks like the patches fixed it. At least no oops this time. Now to install xine/vdpau and see if it all works


On 6/14/2010 5:39 AM, Andy Walls wrote:
On Sun, 2010-06-13 at 19:55 -0700, Timothy D. Lenz wrote:
I tried to build new drivers from v4l hg for 06/08/10 and when I tried
to load drivers I got a kernel oops. Kernel is 2.6.34 64bit for amd cpu

http://pastebin.com/7KwJtFJg


See:
http://article.gmane.org/gmane.linux.drivers.video-input-infrastructure/20198
http://article.gmane.org/gmane.linux.drivers.video-input-infrastructure/19904

The Oops appears to be in the same place as the Oops I analyzed in the
second link.  However, your compiler, like mine, decides to code the
comparison against RC_DRIVER_SCANCODE (which is 0) first:

	4f: 83 3a 00   cmpl   $0x0,(%rdx)<---------- Oopsing insn

Right about here:

http://linuxtv.org/hg/v4l-dvb/file/23492745405c/linux/drivers/media/IR/ir-sysfs.c#l226


As mentioned in the first link, please try the patch found here:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=84b14f181a36eea6591779156ef356f8d198bbfd

Regards,
Andy

Jun 13 14:35:40 x64VDR kernel: IR JVC protocol handler initialized
Jun 13 14:35:40 x64VDR kernel: IR Sony protocol handler initialized
Jun 13 14:35:40 x64VDR kernel: cx23885_dev_checkrevision() Hardware
revision = 0xb0
Jun 13 14:35:40 x64VDR kernel: cx23885[0]/0: found at 0000:02:00.0, rev:
2, irq: 16, latency: 0, mmio: 0xfdc00000
Jun 13 14:35:40 x64VDR kernel: cx23885 0000:02:00.0: setting latency
timer to 64
Jun 13 14:35:40 x64VDR kernel: IRQ 16/cx23885[0]: IRQF_DISABLED is not
guaranteed on shared IRQs
Jun 13 14:35:40 x64VDR kernel: Registered IR keymap rc-fusionhdtv-mce
Jun 13 14:35:40 x64VDR kernel: BUG: unable to handle kernel NULL pointer
dereference at (null)
Jun 13 14:35:40 x64VDR kernel: IP: [<ffffffffa0229e30>]
ir_register_class+0x4f/0x15f [ir_core]
Jun 13 14:35:40 x64VDR kernel: PGD 7ebdb067 PUD 7ebd3067 PMD 0
Jun 13 14:35:40 x64VDR kernel: Oops: 0000 [#1] PREEMPT SMP
Jun 13 14:35:40 x64VDR kernel: last sysfs file:
/sys/module/ir_core/initstate
Jun 13 14:35:40 x64VDR kernel: CPU 1
Jun 13 14:35:40 x64VDR kernel: Modules linked in: rc_fusionhdtv_mce
ir_kbd_i2c(+) ir_sony_decoder ir_jvc_decoder ir_rc6_decoder cx23885
ir_rc5_decoder cx2341x v4l2_common videobuf_dvb ir_common ir_nec_decoder
ir_core btcx_risc tveeprom lnbp21 stv0299 dvb_ttpci dvb_core saa7146_vv
videodev v4l1_compat v4l2_compat_ioctl32 saa7146 videobuf_dma_sg
videobuf_core ttpci_eeprom powernow_k8 hwmon_vid max6650 snd_intel8x0
snd_ac97_codec ac97_bus smbfs af_packet snd_hda_codec_analog
snd_hda_intel snd_hda_codec snd_pcm snd_seq snd_timer snd_seq_device snd
sg psmouse amd64_edac_mod k8temp fan soundcore snd_page_alloc
asus_atk0110 i2c_nforce2 thermal processor button
Jun 13 14:35:40 x64VDR kernel:
Jun 13 14:35:40 x64VDR kernel: Pid: 1933, comm: modprobe Not tainted
2.6.34.20100610.1 #1 M2N-E/System Product Name
Jun 13 14:35:40 x64VDR kernel: RIP: 0010:[<ffffffffa0229e30>]
[<ffffffffa0229e30>] ir_register_class+0x4f/0x15f [ir_core]
Jun 13 14:35:40 x64VDR kernel: RSP: 0018:ffff88007e0abd18  EFLAGS: 00010246
Jun 13 14:35:40 x64VDR kernel: RAX: 0000000000000000 RBX:
ffff88007ee5ec00 RCX: ffffffffa022ae00
Jun 13 14:35:40 x64VDR kernel: RDX: 0000000000000000 RSI:
ffffffffa022a9d4 RDI: ffff88007ee5ec00
Jun 13 14:35:40 x64VDR kernel: RBP: 0000000000000000 R08:
000000000000004f R09: 00000000ffffffff
Jun 13 14:35:40 x64VDR kernel: R10: 00000000ffffffff R11:
ffff88007ee28808 R12: ffffffffa029d060
Jun 13 14:35:40 x64VDR kernel: R13: ffff88007ee28000 R14:
0000000000000282 R15: ffffffffa0296aec
Jun 13 14:35:40 x64VDR kernel: FS:  00007fdc8355d6f0(0000)
GS:ffff880001700000(0000) knlGS:0000000000000000
Jun 13 14:35:40 x64VDR kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
000000008005003b
Jun 13 14:35:40 x64VDR kernel: CR2: 0000000000000000 CR3:
000000007ebd1000 CR4: 00000000000006e0
Jun 13 14:35:40 x64VDR kernel: DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Jun 13 14:35:40 x64VDR kernel: DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Jun 13 14:35:40 x64VDR kernel: Process modprobe (pid: 1933, threadinfo
ffff88007e0aa000, task ffff88007e22a280)
Jun 13 14:35:40 x64VDR kernel: Stack:
Jun 13 14:35:40 x64VDR kernel:  ffff88007ee28000 ffff88007ee5ec00
ffff88007ee28000 ffffffffa029d060
Jun 13 14:35:40 x64VDR kernel:<0>  000000000000002d ffffffffa022960a
0000000000000001 ffffffff00000000
Jun 13 14:35:40 x64VDR kernel:<0>  ffff88007ee5ee20 ffff88007ee5edf8
ffff88007e0aa000 ffff88007d815600
Jun 13 14:35:40 x64VDR kernel: Call Trace:
Jun 13 14:35:40 x64VDR kernel:  [<ffffffffa022960a>] ?
__ir_input_register+0x243/0x2e7 [ir_core]
Jun 13 14:35:40 x64VDR kernel:  [<ffffffffa02963aa>] ?
ir_probe+0x37f/0x448 [ir_kbd_i2c]
Jun 13 14:35:40 x64VDR kernel:  [<ffffffffa029602b>] ?
ir_probe+0x0/0x448 [ir_kbd_i2c]
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff81222ce2>] ?
i2c_device_probe+0xb0/0xe6
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811be322>] ?
driver_sysfs_add+0x42/0x69
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811be452>] ?
driver_probe_device+0x9c/0x123
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811be528>] ?
__driver_attach+0x4f/0x6f
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811be4d9>] ?
__driver_attach+0x0/0x6f
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811bdd13>] ?
bus_for_each_dev+0x44/0x78
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811bd6f8>] ?
bus_add_driver+0xaf/0x1f7
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff811be7cd>] ?
driver_register+0x90/0xf8
Jun 13 14:35:40 x64VDR kernel:  [<ffffffffa029a000>] ? ir_init+0x0/0x19
[ir_kbd_i2c]
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff812238f9>] ?
i2c_register_driver+0x40/0x91
Jun 13 14:35:40 x64VDR kernel:  [<ffffffffa029a000>] ? ir_init+0x0/0x19
[ir_kbd_i2c]
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff810001e0>] ?
do_one_initcall+0x4f/0x13e
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff81052330>] ?
sys_init_module+0xc6/0x222
Jun 13 14:35:40 x64VDR kernel:  [<ffffffff81001eab>] ?
system_call_fastpath+0x16/0x1b
Jun 13 14:35:40 x64VDR kernel: Code: a0 48 89 c3 e8 b9 23 f2 e0 85 c0 89
c5 0f 88 1b 01 00 00 48 8b 93 30 02 00 00 48 c7 c1 00 ae 22 a0 48 c7 c6
d4 a9 22 a0 48 89 df<83>  3a 00 48 c7 c2 30 ae 22 a0 48 c7 83 d8 01 00
00 90 ad 22 a0
Jun 13 14:35:40 x64VDR kernel: RIP  [<ffffffffa0229e30>]
ir_register_class+0x4f/0x15f [ir_core]
Jun 13 14:35:40 x64VDR kernel:  RSP<ffff88007e0abd18>
Jun 13 14:35:40 x64VDR kernel: CR2: 0000000000000000
Jun 13 14:35:40 x64VDR kernel: ---[ end trace 3443a52638911d4d ]---
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