After update from 3.5 kernel to newer version I got kernel oops when I
connect my Hercules Blog Webcam. The full error stacktrace is at the end
of this e-mail.
Commit bisect revealed the regression at:
-------------------------
1bd7d6adc691993206cf7dd69f1aaf8dccb06677 is the first bad commit
commit 1bd7d6adc691993206cf7dd69f1aaf8dccb06677
Author: Antonio Ospite <ospite@xxxxxxxxxxxx>
Date: Wed May 16 18:42:46 2012 -0300
[media] gspca_ov534: Convert to the control framework
Signed-off-by: Antonio Ospite <ospite@xxxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxx>
:040000 040000 81bb6d86a59d2fca15fea4d43a8abe34354cf69e
6b7c2077ae5d8bdea32864841b5cd14149c6a44a M drivers
-------------------------
I also try to change the gspca_ov534 module source (ov534.c) from the
3.8 kernel and added some additional null checks in sd_start function
and add the extensive logging to it. With those changes my webcam is
working OK. As far as I can see, sd_start function is called couple of
times, but when it is called the first time (when a usb cable was
inserted), sd struct is almost empty and without null check this leads
to kernel oops. Here is the part of test version log when sd_start was
called first time:
sd_start: NO sd->hue!
sd_start: NO sd->saturation!
sd_start: NO sd->autogain!
sd_start: NO sd->autowhitebalance!
sd_start: NO sd->autoexposure!
sd_start: NO sd->gain!
sd_start: NO sd->exposure!
sd_start: NO sd->brightness!
sd_start: NO sd->contrast!
sd_start: NO sd->sharpness!
sd_start: NO sd->hflip and sd->vflip!
sd_start: NO sd->plfreq!
Hi!
After update from 3.5 kernel to newer version I got kernel oops when I
connect my Hercules Blog Webcam. The full error stacktrace is at the end
of this e-mail.
Commit bisect revealed the regression at: ------- ------- ---- 206cf7dd69f1aaf 8dccb06677 is the first bad commit 206cf7dd69f1aaf 8dccb06677 xxxxxxxxxxxx>
-------
1bd7d6adc691993
commit 1bd7d6adc691993
Author: Antonio Ospite <ospite@
Date: Wed May 16 18:42:46 2012 -0300
[media] gspca_ov534: Convert to the control framework
Signed-off-by: Antonio Ospite <ospite@ xxxxxxxxxxxx> xxxxxxxxxxxx> xxxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@
Signed-off-by: Mauro Carvalho Chehab <mchehab@
:040000 040000 81bb6d86a59d2fc a15fea4d43a8abe 34354cf69e ea32864841b5cd1 4149c6a44a M drivers ------- ------- ----
6b7c2077ae5d8bd
-------
I also try to change the gspca_ov534 module source (ov534.c) from the
3.8 kernel and added some additional null checks in sd_start function
and add the extensive logging to it. With those changes my webcam is
working OK. As far as I can see, sd_start function is called couple of
times, but when it is called the first time (when a usb cable was
inserted), sd struct is almost empty and without null check this leads
to kernel oops. Here is the part of test version log when sd_start was
called first time:
sd_start: NO sd->hue! lance!
sd_start: NO sd->saturation!
sd_start: NO sd->autogain!
sd_start: NO sd->autowhiteba
sd_start: NO sd->autoexposure!
sd_start: NO sd->gain!
sd_start: NO sd->exposure!
sd_start: NO sd->brightness!
sd_start: NO sd->contrast!
sd_start: NO sd->sharpness!
sd_start: NO sd->hflip and sd->vflip!
sd_start: NO sd->plfreq!
Additional info can be found here: /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1173723/
https:/
Here is the error stacktrace: b01>] g_ctrl+ 0x11/0x60 [videodev] codec_realtek stir4200 irda crc_ccitt usblp snd_hda_intel 031100rc2- generic #201307211535 ffffffffa03c1b0 1>] b01>] v4l2_ctrl_ g_ctrl+ 0x11/0x60 [videodev] aa1af8 EFLAGS: 00010292 0(0000) 0000(0000) knlGS:000000000 0000000 cff>] ? sccb_w_ array+0x3f/ 0x80 88e>] sd_start+0xce/0x2b0 bf9>] sd_init+0x189/0x1e8 c95>] probe2+ 0x285/0x410 [gspca_main] e58>] gspca_dev_ probe+0x38/ 0x60 081>] sd_probe+0x21/0x30 960>] usb_probe_ interface+ 0x1c0/0x2f0 58c>] really_ probe+0x6c/ 0x330 9d7>] driver_ probe_device+ 0x47/0xa0 adb>] __driver_ attach+ 0xab/0xb0 a30>] ? driver_ probe_device+ 0xa0/0xa0 7be>] bus_for_ each_dev+ 0x5e/0x90 14e>] driver_ attach+ 0x1e/0x20 bdc>] bus_add_ driver+ 0x10c/0x290 05d>] driver_ register+ 0x7d/0x160 590>] usb_register_ driver+ 0xa0/0x160 000>] ? 0xffffffffa0066fff 01e>] sd_driver_ init+0x1e/ 0x1000 12a>] do_one_ initcall+ 0xfa/0x1b0 8c3>] ? set_memory_ nx+0x43/ 0x50 e8d>] do_init_ module+ 0x80/0x1d1 079>] load_module+ 0x4c9/0x5f0 7b0>] ? add_kallsyms+ 0x210/0x210 254>] SyS_init_ module+ 0xb4/0x100 3ef>] tracesys+0xe1/0xe6 b01>] g_ctrl+ 0x11/0x60 [videodev]
kernel: [ 52.679705] usb 3-2: new high-speed USB device number 2 using
xhci_hcd
kernel: [ 52.697906] usb 3-2: New USB device found, idVendor=06f8,
idProduct=3002
kernel: [ 52.697910] usb 3-2: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
kernel: [ 52.697912] usb 3-2: Product: Hercules Blog Microphone
kernel: [ 52.697914] usb 3-2: Manufacturer: Hercules Blog Webcam
kernel: [ 52.708983] Linux video capture interface: v2.00
kernel: [ 52.710778] gspca_main: v2.14.0 registered
kernel: [ 52.712210] gspca_main: ov534-2.14.0 probing 06f8:3002
kernel: [ 55.506311] BUG: unable to handle kernel NULL pointer
dereference at 0000000000000050
kernel: [ 55.506367] IP: [<ffffffffa03c1
v4l2_ctrl_
kernel: [ 55.506414] PGD 0
kernel: [ 55.506429] Oops: 0000 [#1] SMP
kernel: [ 55.506453] Modules linked in: gspca_ov534(+) gspca_main
videodev rfcomm bnep ppdev bluetooth binfmt_misc snd_hda_codec_hdmi
snd_hda_
snd_hda_codec snd_hwdep snd_pcm hid_generic snd_page_alloc snd_seq_midi
snd_seq_midi_event usbhid snd_rawmidi snd_seq snd_seq_device snd_timer
hid i915 snd psmouse drm_kms_helper serio_raw mei_me drm mei soundcore
video i2c_algo_bit lpc_ich mac_hid coretemp lp parport firewire_ohci
firewire_core crc_itu_t ahci libahci alx mdio r8169 mii [last unloaded:
parport_pc]
kernel: [ 55.506819] CPU: 3 PID: 4352 Comm: modprobe Not tainted
3.11.0-
kernel: [ 55.506864] Hardware name: Gigabyte Technology Co., Ltd. To
be filled by O.E.M./Z77-DS3H, BIOS F9 09/19/2012
kernel: [ 55.506913] task: ffff8801c20f9770 ti: ffff8801ceaa0000
task.ti: ffff8801ceaa0000
kernel: [ 55.506952] RIP: 0010:[<
[<ffffffffa03c1
kernel: [ 55.507005] RSP: 0018:ffff8801ce
kernel: [ 55.507033] RAX: 0000000000000001 RBX: 0000000000000000 RCX:
000000000001988b
kernel: [ 55.507069] RDX: 000000000001988a RSI: ffffffffa032745a RDI:
0000000000000000
kernel: [ 55.507106] RBP: ffff8801ceaa1b28 R08: 0000000000017380 R09:
ffffea0008419d80
kernel: [ 55.507142] R10: ffffffff81538f5a R11: 0000000000000002 R12:
ffffffffa03273dc
kernel: [ 55.507178] R13: ffffffffa03273dc R14: 0000000000000000 R15:
ffffffffa03270a0
kernel: [ 55.507215] FS: 00007f72d564a74
GS:ffff88021f38
kernel: [ 55.507256] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: [ 55.507286] CR2: 0000000000000050 CR3: 00000001bd1f0000 CR4:
00000000001407e0
kernel: [ 55.507323] Stack:
kernel: [ 55.507335] ffff8801ceaa1b28 ffffffffa0325cff
ffff8801000001f4 ffff8801ceb44000
kernel: [ 55.507380] ffffffffa03273dc ffff8801ceb44000
ffff8801ceaa1b58 ffffffffa032688e
kernel: [ 55.507426] ffff8801ceb44000 ffffffffa03274f0
ffffffffa03274f0 ffff8801ceb44380
kernel: [ 55.507471] Call Trace:
kernel: [ 55.507490] [<ffffffffa0325
[gspca_ov534]
kernel: [ 55.507527] [<ffffffffa0326
[gspca_ov534]
kernel: [ 55.507561] [<ffffffffa0326
[gspca_ov534]
kernel: [ 55.507596] [<ffffffffa02a0
gspca_dev_
kernel: [ 55.507634] [<ffffffffa02a0
[gspca_main]
kernel: [ 55.507670] [<ffffffffa0325
[gspca_ov534]
kernel: [ 55.507706] [<ffffffff8153c
kernel: [ 55.507740] [<ffffffff81487
kernel: [ 55.507771] [<ffffffff81487
kernel: [ 55.507803] [<ffffffff81487
kernel: [ 55.507834] [<ffffffff81487
kernel: [ 55.507867] [<ffffffff81485
kernel: [ 55.507899] [<ffffffff81487
kernel: [ 55.507929] [<ffffffff81486
kernel: [ 55.507961] [<ffffffff81488
kernel: [ 55.507993] [<ffffffff8153b
kernel: [ 55.508027] [<ffffffffa0067
kernel: [ 55.508056] [<ffffffffa0067
[gspca_ov534]
kernel: [ 55.508094] [<ffffffff81002
kernel: [ 55.508126] [<ffffffff81057
kernel: [ 55.508160] [<ffffffff81712
kernel: [ 55.508193] [<ffffffff810d2
kernel: [ 55.508223] [<ffffffff810cf
kernel: [ 55.508254] [<ffffffff810d2
kernel: [ 55.508286] [<ffffffff81733
kernel: [ 55.508312] Code: a0 09 00 00 48 c7 c7 30 c3 3c a0 e8 7a 38
ca e0 eb cf 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89
fb 48 83 ec 28 <8b> 47 50 83 e8 05 83 f8 02 77 09 80 b8 20 8c 3c a0 00
74 1d 48
kernel: [ 55.508559] RIP [<ffffffffa03c1
v4l2_ctrl_
kernel: [ 55.510605] RSP <ffff8801ceaa1af8>
kernel: [ 55.512641] CR2: 0000000000000050
kernel: [ 55.525424] ---[ end trace 6786f15abfd2ac90 ]---
--
Regards,
Yaroslav