From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: drivers/ata/sata_fsl.c:333:22: warning: use of uninitialized value '<unknown>' [CWE-457]
Date: Sun, 14 Aug 2022 23:28:03 +0800 [thread overview]
Message-ID: <202208142356.3JFxrCpc-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 7192 bytes --]
::::::
:::::: Manual check reason: "low confidence bisect report"
:::::: Manual check reason: "low confidence static check first_new_problem: drivers/ata/sata_fsl.c:333:22: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]"
::::::
BCC: lkp(a)intel.com
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Damien Le Moal <damien.lemoal@opensource.wdc.com>
CC: Hannes Reinecke <hare@suse.de>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: aea23e7c464bfdec04b52cf61edb62030e9e0d0a
commit: 87924c5b4094f195507bebcab96e141e48c947d7 ata: sata_fsl: add compile test support
date: 7 months ago
:::::: branch date: 15 hours ago
:::::: commit date: 7 months ago
config: arm-randconfig-c002-20220807 (https://download.01.org/0day-ci/archive/20220814/202208142356.3JFxrCpc-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=87924c5b4094f195507bebcab96e141e48c947d7
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 87924c5b4094f195507bebcab96e141e48c947d7
# 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/ata/sata_fsl.c:1384:22: warning: initialized field overwritten [-Woverride-init]
1384 | .can_queue = SATA_FSL_QUEUE_DEPTH,
| ^~~~~~~~~~~~~~~~~~~~
drivers/ata/sata_fsl.c:1384:22: note: (near initialization for 'sata_fsl_sht.can_queue')
drivers/ata/sata_fsl.c: In function 'fsl_sata_intr_coalescing_store':
>> drivers/ata/sata_fsl.c:333:22: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
333 | unsigned int coalescing_count, coalescing_ticks;
| ^~~~~~~~~~~~~~~~
'fsl_sata_intr_coalescing_store': event 1
|
| 333 | unsigned int coalescing_count, coalescing_ticks;
| | ^~~~~~~~~~~~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/ata/sata_fsl.c:333:41: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
333 | unsigned int coalescing_count, coalescing_ticks;
| ^~~~~~~~~~~~~~~~
'fsl_sata_intr_coalescing_store': event 1
|
| 333 | unsigned int coalescing_count, coalescing_ticks;
| | ^~~~~~~~~~~~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/ata/sata_fsl.c: In function 'fsl_sata_rx_watermark_store':
drivers/ata/sata_fsl.c:369:22: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
369 | unsigned int rx_watermark;
| ^~~~~~~~~~~~
'fsl_sata_rx_watermark_store': event 1
|
| 369 | unsigned int rx_watermark;
| | ^~~~~~~~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/ata/sata_fsl.c: In function 'sata_fsl_port_start':
drivers/ata/sata_fsl.c:707:20: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
707 | dma_addr_t mem_dma;
| ^~~~~~~
'sata_fsl_port_start': event 1
|
| 707 | dma_addr_t mem_dma;
| | ^~~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/ata/sata_fsl.c: In function 'sata_fsl_softreset':
drivers/ata/sata_fsl.c:929:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
929 | u32 Serror;
| ^~~~~~
'sata_fsl_softreset': event 1
|
| 929 | u32 Serror;
| | ^~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
drivers/ata/sata_fsl.c: In function 'sata_fsl_host_intr':
drivers/ata/sata_fsl.c:1188:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
1188 | u32 SError;
| ^~~~~~
'sata_fsl_host_intr': event 1
|
| 1188 | u32 SError;
| | ^~~~~~
| | |
| | (1) use of uninitialized value '<unknown>' here
|
vim +333 drivers/ata/sata_fsl.c
6b4b8fc87dc5cb Qiang Liu 2012-02-15 328
6b4b8fc87dc5cb Qiang Liu 2012-02-15 329 static ssize_t fsl_sata_intr_coalescing_store(struct device *dev,
6b4b8fc87dc5cb Qiang Liu 2012-02-15 330 struct device_attribute *attr,
6b4b8fc87dc5cb Qiang Liu 2012-02-15 331 const char *buf, size_t count)
6b4b8fc87dc5cb Qiang Liu 2012-02-15 332 {
6b4b8fc87dc5cb Qiang Liu 2012-02-15 @333 unsigned int coalescing_count, coalescing_ticks;
6b4b8fc87dc5cb Qiang Liu 2012-02-15 334
6b4b8fc87dc5cb Qiang Liu 2012-02-15 335 if (sscanf(buf, "%d%d",
6b4b8fc87dc5cb Qiang Liu 2012-02-15 336 &coalescing_count,
6b4b8fc87dc5cb Qiang Liu 2012-02-15 337 &coalescing_ticks) != 2) {
6b4b8fc87dc5cb Qiang Liu 2012-02-15 338 printk(KERN_ERR "fsl-sata: wrong parameter format.\n");
6b4b8fc87dc5cb Qiang Liu 2012-02-15 339 return -EINVAL;
6b4b8fc87dc5cb Qiang Liu 2012-02-15 340 }
6b4b8fc87dc5cb Qiang Liu 2012-02-15 341
6b4b8fc87dc5cb Qiang Liu 2012-02-15 342 fsl_sata_set_irq_coalescing(dev_get_drvdata(dev),
6b4b8fc87dc5cb Qiang Liu 2012-02-15 343 coalescing_count, coalescing_ticks);
6b4b8fc87dc5cb Qiang Liu 2012-02-15 344
6b4b8fc87dc5cb Qiang Liu 2012-02-15 345 return strlen(buf);
6b4b8fc87dc5cb Qiang Liu 2012-02-15 346 }
6b4b8fc87dc5cb Qiang Liu 2012-02-15 347
:::::: The code at line 333 was first introduced by commit
:::::: 6b4b8fc87dc5cbfcfb5c749dc200906471fb854c sata_fsl: add support for interrupt coalsecing feature
:::::: TO: Qiang Liu <qiang.liu@freescale.com>
:::::: CC: Jeff Garzik <jgarzik@redhat.com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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