10:35 p.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.4
head: 468d91b8a8759ba935302dc08716f4d3242a73a7
commit: 468d91b8a8759ba935302dc08716f4d3242a73a7 [10/10] gcov: Disable gcov build with GCC
10
config: x86_64-randconfig-a004-20200913 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
b2c32c90bab09a6e2c1f370429db26017a182143)
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
git checkout 468d91b8a8759ba935302dc08716f4d3242a73a7
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
In file included from drivers/usb/gadget/function/u_serial.c:21:
In file included from include/linux/sched.h:61:
In file included from include/linux/cgroup-defs.h:16:
include/linux/percpu-refcount.h:177:3: warning: comparison of integers of different
signs: 'unsigned long' and 'int' [-Wsign-compare]
this_cpu_add(*percpu_count, nr);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:526:33: note: expanded from macro 'this_cpu_add'
#define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:397:11: note: expanded from macro
'__pcpu_size_call'
case 8: stem##8(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:236:1: note: expanded from here
this_cpu_add_8
^
arch/x86/include/asm/percpu.h:478:35: note: expanded from macro
'this_cpu_add_8'
#define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/percpu.h:130:31: note: expanded from macro
'percpu_add_op'
((val) == 1 || (val) == -1)) ? \
~~~ ^ ~~
In file included from drivers/usb/gadget/function/u_serial.c:21:
In file included from include/linux/sched.h:61:
In file included from include/linux/cgroup-defs.h:16:
include/linux/percpu-refcount.h:276:3: warning: comparison of integers of different
signs: 'unsigned long' and 'int' [-Wsign-compare]
this_cpu_sub(*percpu_count, nr);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:536:33: note: expanded from macro 'this_cpu_sub'
#define this_cpu_sub(pcp, val) this_cpu_add(pcp, -(typeof(pcp))(val))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:526:33: note: expanded from macro 'this_cpu_add'
#define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:397:11: note: expanded from macro
'__pcpu_size_call'
case 8: stem##8(variable, __VA_ARGS__);break; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:18:1: note: expanded from here
this_cpu_add_8
^
arch/x86/include/asm/percpu.h:478:35: note: expanded from macro
'this_cpu_add_8'
#define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/percpu.h:130:31: note: expanded from macro
'percpu_add_op'
((val) == 1 || (val) == -1)) ? \
~~~ ^ ~~
In file included from drivers/usb/gadget/function/u_serial.c:22:
In file included from include/linux/interrupt.h:12:
In file included from include/linux/hardirq.h:8:
In file included from arch/x86/include/asm/hardirq.h:5:
In file included from include/linux/irq.h:418:
In file included from arch/x86/include/asm/hw_irq.h:26:
In file included from arch/x86/include/asm/sections.h:5:
arch/x86/include/asm/uaccess.h:754:26: warning: comparison of integers of different
signs: 'int' and 'unsigned long' [-Wsign-compare]
if (likely(sz < 0 || sz >= n))
~~ ^ ~
include/linux/compiler.h:181:40: note: expanded from macro 'likely'
# define likely(x) __builtin_expect(!!(x), 1)
^
In file included from drivers/usb/gadget/function/u_serial.c:22:
In file included from include/linux/interrupt.h:12:
In file included from include/linux/hardirq.h:8:
In file included from arch/x86/include/asm/hardirq.h:5:
In file included from include/linux/irq.h:418:
In file included from arch/x86/include/asm/hw_irq.h:26:
In file included from arch/x86/include/asm/sections.h:5:
arch/x86/include/asm/uaccess.h:772:26: warning: comparison of integers of different
signs: 'int' and 'unsigned long' [-Wsign-compare]
if (likely(sz < 0 || sz >= n))
~~ ^ ~
include/linux/compiler.h:181:40: note: expanded from macro 'likely'
# define likely(x) __builtin_expect(!!(x), 1)
^
drivers/usb/gadget/function/u_serial.c:543:14: warning: comparison of integers of
different signs: 'int' and 'unsigned int' [-Wsign-compare]
if (count != size) {
~~~~~ ^ ~~~~
5 warnings generated.
/tmp/u_serial-230608.s: Assembler messages:
> /tmp/u_serial-230608.s:3280: Warning: no instruction mnemonic
suffix given and no register operands; using default for `bts'
/tmp/u_serial-230608.s:3632: Warning: no instruction mnemonic suffix given and no register
operands; using default for `bts'
/tmp/u_serial-230608.s:5991: Warning: no instruction mnemonic suffix given and no
register operands; using default for `bts'
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org