* drivers/hid/hid-ft260.c:879:1: warning: taking address of packed member 'clock' of class or structure 'ft260_get_i2c_status_report' may result in an unaligned pointer value
@ 2022-01-05 15:17 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-01-05 15:17 UTC (permalink / raw)
To: Michael Zaidman; +Cc: llvm, kbuild-all, linux-kernel, Jiri Kosina
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c9e6606c7fe92b50a02ce51dda82586ebdf99b48
commit: 6a82582d9fa438045191074856f47165334f2777 HID: ft260: add usb hid to i2c host bridge driver
date: 10 months ago
config: mips-randconfig-r036-20220105 (https://download.01.org/0day-ci/archive/20220105/202201052330.GECx4YSO-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d5b6e30ed3acad794dd0aec400e617daffc6cc3d)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6a82582d9fa438045191074856f47165334f2777
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 6a82582d9fa438045191074856f47165334f2777
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/hid/ drivers/usb/gadget/ fs/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/hid/hid-ft260.c:515:59: warning: variable 'len' is uninitialized when used here [-Wuninitialized]
hid_err(hdev, "%s: unsupported wr len: %d\n", __func__, len);
^~~
include/linux/hid.h:1190:30: note: expanded from macro 'hid_err'
dev_err(&(hid)->dev, fmt, ##__VA_ARGS__)
^~~~~~~~~~~
include/linux/dev_printk.h:112:32: note: expanded from macro 'dev_err'
_dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~~~~~~~~~
drivers/hid/hid-ft260.c:507:9: note: initialize the variable 'len' to silence this warning
int len, ret;
^
= 0
>> drivers/hid/hid-ft260.c:879:1: warning: taking address of packed member 'clock' of class or structure 'ft260_get_i2c_status_report' may result in an unaligned pointer value [-Waddress-of-packed-member]
FT260_I2CST_ATTR_SHOW(clock);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hid/hid-ft260.c:814:3: note: expanded from macro 'FT260_I2CST_ATTR_SHOW'
FT260_ATTR_SHOW(name, ft260_get_i2c_status_report, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hid/hid-ft260.c:803:18: note: expanded from macro 'FT260_ATTR_SHOW'
type *field = &rep.name; \
^~~~~~~~
2 warnings generated.
vim +879 drivers/hid/hid-ft260.c
878
> 879 FT260_I2CST_ATTR_SHOW(clock);
880 FT260_WORD_ATTR_STORE(clock, ft260_set_i2c_speed_report,
881 FT260_SET_I2C_CLOCK_SPEED);
882 static DEVICE_ATTR_RW(clock);
883
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 2+ messages in thread
* drivers/hid/hid-ft260.c:879:1: warning: taking address of packed member 'clock' of class or structure 'ft260_get_i2c_status_report' may result in an unaligned pointer value
@ 2021-09-11 16:50 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-09-11 16:50 UTC (permalink / raw)
To: Michael Zaidman; +Cc: llvm, kbuild-all, linux-kernel, Jiri Kosina
[-- Attachment #1: Type: text/plain, Size: 4273 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 926de8c4326c14fcf35f1de142019043597a4fac
commit: 6a82582d9fa438045191074856f47165334f2777 HID: ft260: add usb hid to i2c host bridge driver
date: 6 months ago
config: i386-randconfig-a015-20210911 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 261cbe98c38f8c1ee1a482fe76511110e790f58a)
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=6a82582d9fa438045191074856f47165334f2777
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 6a82582d9fa438045191074856f47165334f2777
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
clang-14: warning: optimization flag '-falign-jumps=0' is not supported [-Wignored-optimization-argument]
In file included from drivers/hid/hid-ft260.c:12:
In file included from include/linux/hidraw.h:8:
In file included from include/uapi/linux/hidraw.h:19:
In file included from include/linux/hid.h:19:
In file included from include/linux/slab.h:15:
In file included from include/linux/gfp.h:6:
In file included from include/linux/mmzone.h:8:
In file included from include/linux/spinlock.h:51:
In file included from include/linux/preempt.h:78:
In file included from arch/x86/include/asm/preempt.h:7:
In file included from include/linux/thread_info.h:58:
arch/x86/include/asm/thread_info.h:172:13: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address]
oldframe = __builtin_frame_address(1);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/thread_info.h:174:11: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address]
frame = __builtin_frame_address(2);
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hid/hid-ft260.c:515:59: warning: variable 'len' is uninitialized when used here [-Wuninitialized]
hid_err(hdev, "%s: unsupported wr len: %d\n", __func__, len);
^~~
include/linux/hid.h:1190:30: note: expanded from macro 'hid_err'
dev_err(&(hid)->dev, fmt, ##__VA_ARGS__)
^~~~~~~~~~~
include/linux/dev_printk.h:112:32: note: expanded from macro 'dev_err'
_dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~~~~~~~~~
drivers/hid/hid-ft260.c:507:9: note: initialize the variable 'len' to silence this warning
int len, ret;
^
= 0
>> drivers/hid/hid-ft260.c:879:1: warning: taking address of packed member 'clock' of class or structure 'ft260_get_i2c_status_report' may result in an unaligned pointer value [-Waddress-of-packed-member]
FT260_I2CST_ATTR_SHOW(clock);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hid/hid-ft260.c:814:3: note: expanded from macro 'FT260_I2CST_ATTR_SHOW'
FT260_ATTR_SHOW(name, ft260_get_i2c_status_report, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hid/hid-ft260.c:803:18: note: expanded from macro 'FT260_ATTR_SHOW'
type *field = &rep.name; \
^~~~~~~~
4 warnings generated.
vim +879 drivers/hid/hid-ft260.c
878
> 879 FT260_I2CST_ATTR_SHOW(clock);
880 FT260_WORD_ATTR_STORE(clock, ft260_set_i2c_speed_report,
881 FT260_SET_I2C_CLOCK_SPEED);
882 static DEVICE_ATTR_RW(clock);
883
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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^ permalink raw reply [flat|nested] 2+ messages in thread
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