From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: drivers/media/i2c/ov13b10.c:639:16: warning: use of uninitialized value '<unknown>' [CWE-457]
Date: Thu, 28 Jul 2022 03:00:19 +0800 [thread overview]
Message-ID: <202207280252.9RnqpRVE-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 6848 bytes --]
::::::
:::::: Manual check reason: "low confidence bisect report"
:::::: Manual check reason: "low confidence static check warning: drivers/media/i2c/ov13b10.c:639:16: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]"
::::::
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Arec Kao <arec.kao@intel.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6e7765cb477a9753670d4351d14de93f1e9dbbd4
commit: 7ee85054682299babdb32f597b11daeec2d3e9d9 media: Add sensor driver support for the ov13b10 camera.
date: 10 months ago
:::::: branch date: 2 hours ago
:::::: commit date: 10 months ago
config: arm-randconfig-c002-20220718 (https://download.01.org/0day-ci/archive/20220728/202207280252.9RnqpRVE-lkp(a)intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7ee85054682299babdb32f597b11daeec2d3e9d9
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 7ee85054682299babdb32f597b11daeec2d3e9d9
# save the config file
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross ARCH=arm KBUILD_USERCFLAGS='-fanalyzer -Wno-error'
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
gcc-analyzer warnings: (new ones prefixed by >>)
drivers/media/i2c/ov13b10.c: In function 'ov13b10_write_reg':
>> drivers/media/i2c/ov13b10.c:639:16: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
639 | __be32 val;
| ^~~
'ov13b10_write_reg': event 1
|
| 639 | __be32 val;
| | ^~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/media/i2c/ov13b10.c: In function 'ov13b10_enable_test_pattern':
drivers/media/i2c/ov13b10.c:744:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
744 | u32 val;
| ^~~
'ov13b10_enable_test_pattern': event 1
|
| 744 | u32 val;
| | ^~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/media/i2c/ov13b10.c: In function 'ov13b10_set_ctrl_hflip':
drivers/media/i2c/ov13b10.c:766:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
766 | u32 val;
| ^~~
'ov13b10_set_ctrl_hflip': event 1
|
| 766 | u32 val;
| | ^~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/media/i2c/ov13b10.c: In function 'ov13b10_set_ctrl_vflip':
drivers/media/i2c/ov13b10.c:797:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
797 | u32 val;
| ^~~
'ov13b10_set_ctrl_vflip': event 1
|
| 797 | u32 val;
| | ^~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/media/i2c/ov13b10.c: In function 'ov13b10_identify_module':
drivers/media/i2c/ov13b10.c:1152:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
1152 | u32 val;
| ^~~
'ov13b10_identify_module': event 1
|
| 1152 | u32 val;
| | ^~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/media/i2c/ov13b10.c: In function 'ov13b10_check_hwcfg':
drivers/media/i2c/ov13b10.c:1318:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
1318 | u32 ext_clk;
| ^~~~~~~
'ov13b10_check_hwcfg': event 1
|
| 1318 | u32 ext_clk;
| | ^~~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
vim +639 drivers/media/i2c/ov13b10.c
7ee85054682299b Arec Kao 2021-08-17 631
7ee85054682299b Arec Kao 2021-08-17 632 /* Write registers up to 4 at a time */
7ee85054682299b Arec Kao 2021-08-17 633 static int ov13b10_write_reg(struct ov13b10 *ov13b,
7ee85054682299b Arec Kao 2021-08-17 634 u16 reg, u32 len, u32 __val)
7ee85054682299b Arec Kao 2021-08-17 635 {
7ee85054682299b Arec Kao 2021-08-17 636 struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
7ee85054682299b Arec Kao 2021-08-17 637 int buf_i, val_i;
7ee85054682299b Arec Kao 2021-08-17 638 u8 buf[6], *val_p;
7ee85054682299b Arec Kao 2021-08-17 @639 __be32 val;
7ee85054682299b Arec Kao 2021-08-17 640
7ee85054682299b Arec Kao 2021-08-17 641 if (len > 4)
7ee85054682299b Arec Kao 2021-08-17 642 return -EINVAL;
7ee85054682299b Arec Kao 2021-08-17 643
7ee85054682299b Arec Kao 2021-08-17 644 buf[0] = reg >> 8;
7ee85054682299b Arec Kao 2021-08-17 645 buf[1] = reg & 0xff;
7ee85054682299b Arec Kao 2021-08-17 646
7ee85054682299b Arec Kao 2021-08-17 647 val = cpu_to_be32(__val);
7ee85054682299b Arec Kao 2021-08-17 648 val_p = (u8 *)&val;
7ee85054682299b Arec Kao 2021-08-17 649 buf_i = 2;
7ee85054682299b Arec Kao 2021-08-17 650 val_i = 4 - len;
7ee85054682299b Arec Kao 2021-08-17 651
7ee85054682299b Arec Kao 2021-08-17 652 while (val_i < 4)
7ee85054682299b Arec Kao 2021-08-17 653 buf[buf_i++] = val_p[val_i++];
7ee85054682299b Arec Kao 2021-08-17 654
7ee85054682299b Arec Kao 2021-08-17 655 if (i2c_master_send(client, buf, len + 2) != len + 2)
7ee85054682299b Arec Kao 2021-08-17 656 return -EIO;
7ee85054682299b Arec Kao 2021-08-17 657
7ee85054682299b Arec Kao 2021-08-17 658 return 0;
7ee85054682299b Arec Kao 2021-08-17 659 }
7ee85054682299b Arec Kao 2021-08-17 660
--
0-DAY CI Kernel Test Service
https://01.org/lkp
next reply other threads:[~2022-07-27 19:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-27 19:00 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-07-25 12:41 drivers/media/i2c/ov13b10.c:639:16: warning: use of uninitialized value '<unknown>' [CWE-457] kernel test robot
2022-07-22 12:01 kernel test robot
2022-07-19 7:35 kernel test robot
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