tree: https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git testing
head: 8dad5561c13ade87238d9de6dd410b43f7562447commit: d9cead75b1c66b4660b4f87ff339234042d7c6a5 [45/46] can: flexcan: add mcf5441x support
config: x86_64-randconfig-c001-20210726 (attached as .config)compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c63dbd850182797bc4b76124d08e1c320ab2365d)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
#
https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/commit/?id=d9cead75b1c66b4660b4f87ff339234042d7c6a5
git remote add mkl-can-next
https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git
git fetch --no-tags mkl-can-next testing
git checkout d9cead75b1c66b4660b4f87ff339234042d7c6a5
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross
ARCH=x86_64 clang-analyzer
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> clang-analyzer warnings: (new ones prefixed by >>) 8 warnings generated.drivers/staging/ks7010/ks_hostif.c:895:2: warning: Value stored to 'pbuf' is never read [clang-analyzer-deadcode.DeadStores]
pbuf += sprintf(pbuf, ")");
^ ~~~~~~~~~~~~~~~~~~
drivers/staging/ks7010/ks_hostif.c:895:2: note: Value stored to
'pbuf' is never read
pbuf += sprintf(pbuf, ")");
^ ~~~~~~~~~~~~~~~~~~
drivers/staging/ks7010/ks_hostif.c:1178:5: warning: Value stored to
'length' is never read [clang-analyzer-deadcode.DeadStores]
length += sizeof(mic);
^ ~~~~~~~~~~~
drivers/staging/ks7010/ks_hostif.c:1178:5: note: Value stored to
'length' is never read
length += sizeof(mic);
^ ~~~~~~~~~~~
drivers/staging/ks7010/ks_hostif.c:1180:5: warning: Value stored to
'p' is never read [clang-analyzer-deadcode.DeadStores]
p += sizeof(mic);
^ ~~~~~~~~~~~
drivers/staging/ks7010/ks_hostif.c:1180:5: note: Value stored to 'p'
is never read
p += sizeof(mic);
^ ~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
6 warnings generated.drivers/staging/ks7010/ks_wlan_net.c:1811:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(extra, priv->firmware_version);
^~~~~~
drivers/staging/ks7010/ks_wlan_net.c:1811:2: note: Call to function
'strcpy' is insecure as it does not provide bounding of the memory
buffer. Replace unbounded copy functions with analogous functions that
support length arguments such as 'strlcpy'. CWE-119
strcpy(extra, priv->firmware_version);
^~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
5 warnings generated. Suppressed 5 warnings (5 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated. Suppressed 2 warnings (2 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.fs/splice.c:725:2: warning: Undefined or garbage value returned to caller [clang-analyzer-core.uninitialized.UndefReturn]
return ret;
^ ~~~
fs/splice.c:630:2: note: 'ret' declared without an initial value
ssize_t ret;
^~~~~~~~~~~
fs/splice.c:632:15: note: Assuming 'array' is non-null
if (unlikely(!array))
^
include/linux/compiler.h:78:42: note: expanded from macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
fs/splice.c:632:2: note: Taking false branch
if (unlikely(!array))
^
fs/splice.c:638:2: note: Loop condition is false. Execution
continues on line 717
while (sd.total_len) {
^
fs/splice.c:722:9: note: Field 'num_spliced' is 0
if (sd.num_spliced)
^
fs/splice.c:722:2: note: Taking false branch
if (sd.num_spliced)
^
fs/splice.c:725:2: note: Undefined or garbage value returned to caller
return ret;
^ ~~~
fs/splice.c:853:2: warning: Value stored to 'ret' is never read
[clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
fs/splice.c:853:2: note: Value stored to 'ret' is never read
ret = 0;
^ ~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated. Suppressed 3 warnings (3 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated. Suppressed 3 warnings (3 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated. Suppressed 2 warnings (2 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated. Suppressed 3 warnings (3 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.drivers/tty/serial/8250/8250_pci.c:1302:9: warning: Although the value stored to 'tmp' is used in the enclosing expression, the value is never actually read from 'tmp' [clang-analyzer-deadcode.DeadStores]
outl(tmp &= ~0x01000000, base + 0x3c);
^ ~~~~~~~~~~~
drivers/tty/serial/8250/8250_pci.c:1302:9: note: Although the value
stored to 'tmp' is used in the enclosing expression, the value is never
actually read from 'tmp'
outl(tmp &= ~0x01000000, base + 0x3c);
^ ~~~~~~~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
3 warnings generated. Suppressed 3 warnings (3 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/net/can/flexcan.c:666:2: warning: Undefined or garbage value returned to caller [clang-analyzer-core.uninitialized.UndefReturn]
return err;
^
drivers/net/can/flexcan.c:2356:9: note: Calling 'flexcan_clks_enable'
return flexcan_clks_enable(priv);
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/can/flexcan.c:652:2: note: 'err' declared without an
initial value
int err;
^~~~~~~
drivers/net/can/flexcan.c:654:6: note: Assuming field 'clk_ipg' is null
if (priv->clk_ipg) {
^~~~~~~~~~~~~
drivers/net/can/flexcan.c:654:2: note: Taking false branch
if (priv->clk_ipg) {
^
drivers/net/can/flexcan.c:660:6: note: Assuming field 'clk_per' is null
if (priv->clk_per) {
^~~~~~~~~~~~~
drivers/net/can/flexcan.c:660:2: note: Taking false branch
if (priv->clk_per) {
^
drivers/net/can/flexcan.c:666:2: note: Undefined or garbage value
returned to caller
return err;
^ ~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.drivers/net/can/m_can/m_can.c:1166:4: warning: Value stored to 'reg_btp' is never read [clang-analyzer-deadcode.DeadStores]
reg_btp |= DBTP_TDC;
^
drivers/net/can/m_can/m_can.c:1166:4: note: Value stored to
'reg_btp' is never read
Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated. Suppressed 3 warnings (3 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated. Suppressed 3 warnings (3 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.sound/soc/intel/atom/sst/sst_acpi.c:315:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(ctx->firmware_name, mach->fw_filename);
^~~~~~
sound/soc/intel/atom/sst/sst_acpi.c:315:2: note: Call to function
'strcpy' is insecure as it does not provide bounding of the memory
buffer. Replace unbounded copy functions with analogous functions that
support length arguments such as 'strlcpy'. CWE-119
strcpy(ctx->firmware_name, mach->fw_filename);
^~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
7 warnings generated.drivers/mtd/chips/cfi_cmdset_0002.c:1791:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
drivers/mtd/chips/cfi_cmdset_0002.c:1791:4: note: Value stored to
'ret' is never read
ret = 0;
^ ~
drivers/mtd/chips/cfi_cmdset_0002.c:2422:16: warning: Value stored
to 'timeo' during its initialization is never read
[clang-analyzer-deadcode.DeadStores]
unsigned long timeo = jiffies + HZ;
^~~~~ ~~~~~~~~~~~~
drivers/mtd/chips/cfi_cmdset_0002.c:2422:16: note: Value stored to
'timeo' during its initialization is never read
unsigned long timeo = jiffies + HZ;
^~~~~ ~~~~~~~~~~~~
drivers/mtd/chips/cfi_cmdset_0002.c:2522:16: warning: Value stored
to 'timeo' during its initialization is never read
[clang-analyzer-deadcode.DeadStores]
unsigned long timeo = jiffies + HZ;
^~~~~ ~~~~~~~~~~~~
drivers/mtd/chips/cfi_cmdset_0002.c:2522:16: note: Value stored to
'timeo' during its initialization is never read
unsigned long timeo = jiffies + HZ;
^~~~~ ~~~~~~~~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers.
Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code).Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated. Suppressed 4 warnings (4 in non-user code). vim +666 drivers/net/can/flexcan.cda49a8075c00b4 ZHU Yi (ST-FIR/ENG1-Zhu 2017-09-15 649) ca10989632d882 Aisheng Dong 2018-11-30 650 static int flexcan_clks_enable(const struct flexcan_priv *priv)
ca10989632d882 Aisheng Dong 2018-11-30 651 {
ca10989632d882 Aisheng Dong 2018-11-30 652 int err;
ca10989632d882 Aisheng Dong 2018-11-30 653 d9cead75b1c66b
Angelo Dureghello 2021-07-02 654 if (priv->clk_ipg) {
ca10989632d882 Aisheng Dong 2018-11-30 655 err =
clk_prepare_enable(priv->clk_ipg);
ca10989632d882 Aisheng Dong 2018-11-30 656 if (err) ca10989632d882 Aisheng Dong 2018-11-30 657 return err; d9cead75b1c66b Angelo Dureghello 2021-07-02 658 }ca10989632d882 Aisheng Dong 2018-11-30 659 d9cead75b1c66b Angelo Dureghello 2021-07-02 660 if (priv->clk_per) { ca10989632d882 Aisheng Dong 2018-11-30 661 err = clk_prepare_enable(priv->clk_per);
ca10989632d882 Aisheng Dong 2018-11-30 662 if (err)ca10989632d882 Aisheng Dong 2018-11-30 663 clk_disable_unprepare(priv->clk_ipg);
d9cead75b1c66b Angelo Dureghello 2021-07-02 664 }ca10989632d882 Aisheng Dong 2018-11-30 665 ca10989632d882 Aisheng Dong 2018-11-30 @666 return err;
ca10989632d882 Aisheng Dong 2018-11-30 667 } ca10989632d882 Aisheng Dong 2018-11-30 668 :::::: The code at line 666 was first introduced by commit:::::: ca10989632d8820749fad37e13843750198e450a can: flexcan: implement can Runtime PM
:::::: TO: Aisheng Dong <aisheng.dong@xxxxxxx> :::::: CC: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
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