[kbuild] arch/riscv/include/asm/spinlock.h:24:2: warning: Dereference of null pointer [clang-analyzer-core.NullDereference]
CC: l...@lists.linux.dev
CC: kbuild-...@lists.01.org
BCC: l...@intel.com
CC: linux-ker...@vger.kernel.org
TO: Thomas Gleixner
CC: Ingo Molnar
CC: "Peter Zijlstra (Intel)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 551acdc3c3d2b6bc97f11e31dcf960bc36343bfc
commit: 531ae4b06a737ed5539cd75dc6f6b9a28f900bba locking/rtmutex: Split API
from implementation
date: 7 months ago
:: branch date: 9 hours ago
:: commit date: 7 months ago
config: riscv-randconfig-c006-20220317
(https://download.01.org/0day-ci/archive/20220318/202203181309.e0l1dzxg-...@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project
a6ec1e3d798f8eab43fb3a91028c6ab04e115fcb)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=531ae4b06a737ed5539cd75dc6f6b9a28f900bba
git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 531ae4b06a737ed5539cd75dc6f6b9a28f900bba
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
clang-analyzer warnings: (new ones prefixed by >>)
^ ~~~
lib/mpi/mpih-div.c:37:6: note: Assuming 'dividend_size' is not equal to 0
if (!dividend_size)
^~
lib/mpi/mpih-div.c:37:2: note: Taking false branch
if (!dividend_size)
^
lib/mpi/mpih-div.c:49:4: note: Left side of '&&' is false
&& (UDIV_TIME - (2 * UMUL_TIME + 6)) * dividend_size
> UDIV_TIME) {
^
lib/mpi/mpih-div.c:122:3: note: Taking true branch
if (UDIV_NEEDS_NORMALIZATION) {
^
lib/mpi/mpih-div.c:125:26: note: Calling 'count_leading_zeros'
normalization_steps =
count_leading_zeros(divisor_limb);
^
include/linux/count_zeros.h:25:2: note: Taking true branch
if (sizeof(x) == 4)
^
include/linux/count_zeros.h:26:3: note: Returning the value 32, which
participates in a condition later
return BITS_PER_LONG - fls(x);
^
include/linux/count_zeros.h:26:3: note: Returning the value 32
return BITS_PER_LONG - fls(x);
^
lib/mpi/mpih-div.c:125:26: note: Returning from 'count_leading_zeros'
normalization_steps =
count_leading_zeros(divisor_limb);
^
lib/mpi/mpih-div.c:125:4: note: The value 32 is assigned to
'normalization_steps'
normalization_steps =
count_leading_zeros(divisor_limb);
^~~
lib/mpi/mpih-div.c:126:8: note: 'normalization_steps' is 32
if (normalization_steps) {
^~~
lib/mpi/mpih-div.c:126:4: note: Taking true branch
if (normalization_steps) {
^
lib/mpi/mpih-div.c:127:18: note: Assigned value is garbage or undefined
divisor_limb <<= normalization_steps;
^ ~~~
lib/mpi/mpih-div.c:202:12: warning: Division by zero
[clang-analyzer-core.DivideZero]
return 1 / dsize;
~~^~~
lib/mpi/mpih-div.c:194:2: note: Control jumps to 'case 0:' at line 195
switch (dsize) {
^
lib/mpi/mpih-div.c:202:12: note: Division by zero
return 1 / dsize;
~~^~~
lib/mpi/mpih-div.c:475:18: warning: Assigned value is garbage or undefined
[clang-analyzer-core.uninitialized.Assign]
divisor_limb <<= normalization_steps;
^ ~~~
lib/mpi/mpih-div.c:387:6: note: Assuming 'dividend_size' is not equal to 0
if (!dividend_size)
^~
lib/mpi/mpih-div.c:387:2: note: Taking false branch
if (!dividend_size)
^
lib/mpi/mpih-div.c:399:4: note: Left side of '&&' is false
[kbuild] arch/riscv/include/asm/spinlock.h:24:2: warning: Dereference of null pointer [clang-analyzer-core.NullDereference]
CC: l...@lists.linux.dev
CC: kbuild-...@lists.01.org
CC: linux-ker...@vger.kernel.org
TO: Thomas Gleixner
CC: Ingo Molnar
CC: "Peter Zijlstra (Intel)"
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 26291c54e111ff6ba87a164d85d4a4e134b7315c
commit: 531ae4b06a737ed5539cd75dc6f6b9a28f900bba locking/rtmutex: Split API
from implementation
date: 6 months ago
:: branch date: 2 days ago
:: commit date: 6 months ago
config: riscv-randconfig-c006-20220121
(https://download.01.org/0day-ci/archive/20220201/202202012114.gf0lurwz-...@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
d4baf3b1322b84816aa623d8e8cb45a49cb68b84)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=531ae4b06a737ed5539cd75dc6f6b9a28f900bba
git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 531ae4b06a737ed5539cd75dc6f6b9a28f900bba
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
clang-analyzer warnings: (new ones prefixed by >>)
^
fs/ext4/indirect.c:1254:3: note: Taking false branch
if (n == 1) {
^
fs/ext4/indirect.c:1265:17: note: Calling 'ext4_find_shared'
partial = p = ext4_find_shared(inode, n, offsets, chain,
&nr);
^~~
fs/ext4/indirect.c:795:18: note: 'k' is <= 1
for (k = depth; k > 1 && !offsets[k-1]; k--)
^
fs/ext4/indirect.c:795:24: note: Left side of '&&' is false
for (k = depth; k > 1 && !offsets[k-1]; k--)
^
fs/ext4/indirect.c:797:12: note: Calling 'ext4_get_branch'
partial = ext4_get_branch(inode, k, offsets, chain, &err);
^~~
fs/ext4/indirect.c:155:25: note: Left side of '&&' is false
add_chain(chain, NULL, EXT4_I(inode)->i_data + *offsets);
^
include/trace/events/ext4.h:22:24: note: expanded from macro 'EXT4_I'
#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info,
vfs_inode))
^
include/linux/kernel.h:495:61: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
fs/ext4/indirect.c:155:25: note: Taking false branch
add_chain(chain, NULL, EXT4_I(inode)->i_data + *offsets);
^
include/trace/events/ext4.h:22:24: note: expanded from macro 'EXT4_I'
#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info,
vfs_inode))
^
include/linux/kernel.h:495:2: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:328:2: note: expanded from macro
'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_,
__COUNTER__)
^
include/linux/compiler_types.h:316:2: note: expanded from macro
'_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:308:3: note: expanded from macro
'__compiletime_assert'
if (!(condition)) \
^
fs/ext4/indirect.c:155:25: note: Loop condition is false. Exiting loop
add_chain(chain, NULL, EXT4_I(inode)->i_data + *offsets);
^
include/trace/events/ext4.h:22:24: note: expanded from macro 'EXT4_I'
#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info,
vfs_inode))
^
include/linux/kernel.h:495:2: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
[kbuild] arch/riscv/include/asm/spinlock.h:24:2: warning: Dereference of null pointer [clang-analyzer-core.NullDereference]
CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: Thomas Gleixner CC: Ingo Molnar CC: "Peter Zijlstra (Intel)" tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0280e3c58f92b2fe0e8fbbdf8d386449168de4a8 commit: 531ae4b06a737ed5539cd75dc6f6b9a28f900bba locking/rtmutex: Split API from implementation date: 5 months ago :: branch date: 34 hours ago :: commit date: 5 months ago config: riscv-randconfig-c006-20220121 (https://download.01.org/0day-ci/archive/20220127/202201271222.3crzpgzj-...@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d4baf3b1322b84816aa623d8e8cb45a49cb68b84) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=531ae4b06a737ed5539cd75dc6f6b9a28f900bba git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 531ae4b06a737ed5539cd75dc6f6b9a28f900bba # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot clang-analyzer warnings: (new ones prefixed by >>) ^~ fs/orangefs/orangefs-debugfs.c:752:5: note: Call to function 'strcat' 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 'strlcat'. CWE-119 strcat(kernel_debug_string, ","); ^~ fs/orangefs/orangefs-debugfs.c:777:5: warning: Call to function 'strcat' 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 'strlcat'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcat(client_debug_string, ^~ fs/orangefs/orangefs-debugfs.c:777:5: note: Call to function 'strcat' 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 'strlcat'. CWE-119 strcat(client_debug_string, ^~ fs/orangefs/orangefs-debugfs.c:779:5: warning: Call to function 'strcat' 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 'strlcat'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcat(client_debug_string, ","); ^~ fs/orangefs/orangefs-debugfs.c:779:5: note: Call to function 'strcat' 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 'strlcat'. CWE-119 strcat(client_debug_string, ","); ^~ Suppressed 14 warnings (7 in non-user code, 7 with check filters). 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. 6 warnings generated. lib/glob.c:48:32: warning: Assigned value is garbage or undefined [clang-analyzer-core.uninitialized.Assign] char const *back_pat = NULL, *back_str = back_str; ^ lib/glob.c:48:32: note: Assigned value is garbage or undefined char const *back_pat = NULL, *back_str = back_str; ^ 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. 12 warnings generated. Suppressed 12 warnings (5 in non-user code, 7 with check filters). Use -header-filter=.* to display
