# git rev-parse -q --verify 5c4e0a21fae877a7ef89be6dcc6263ec672372b8^{commit}
5c4e0a21fae877a7ef89be6dcc6263ec672372b8
already have revision, skipping fetch
# git checkout -q -f -B kisskb 5c4e0a21fae877a7ef89be6dcc6263ec672372b8
# git clean -qxdf
# < git log -1
# commit 5c4e0a21fae877a7ef89be6dcc6263ec672372b8
# Author: Guenter Roeck <linux@roeck-us.net>
# Date:   Tue Nov 2 07:24:20 2021 -0700
# 
#     string: uninline memcpy_and_pad
#     
#     When building m68k:allmodconfig, recent versions of gcc generate the
#     following error if the length of UTS_RELEASE is less than 8 bytes.
#     
#       In function 'memcpy_and_pad',
#         inlined from 'nvmet_execute_disc_identify' at
#           drivers/nvme/target/discovery.c:268:2: arch/m68k/include/asm/string.h:72:25: error:
#             '__builtin_memcpy' reading 8 bytes from a region of size 7
#     
#     Discussions around the problem suggest that this only happens if an
#     architecture does not provide strlen(), if -ffreestanding is provided as
#     compiler option, and if CONFIG_FORTIFY_SOURCE=n. All of this is the case
#     for m68k. The exact reasons are unknown, but seem to be related to the
#     ability of the compiler to evaluate the return value of strlen() and
#     the resulting execution flow in memcpy_and_pad(). It would be possible
#     to work around the problem by using sizeof(UTS_RELEASE) instead of
#     strlen(UTS_RELEASE), but that would only postpone the problem until the
#     function is called in a similar way. Uninline memcpy_and_pad() instead
#     to solve the problem for good.
#     
#     Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
#     Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
#     Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
#     Signed-off-by: Guenter Roeck <linux@roeck-us.net>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-ld --version
# < git log --format=%s --max-count=1 5c4e0a21fae877a7ef89be6dcc6263ec672372b8
# < make -s -j 32 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-  generic-32bit_defconfig
# < make -s -j 32 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-  help
# make -s -j 32 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-  olddefconfig
# make -s -j 32 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-  
In file included from <command-line>:
/kisskb/src/include/linux/sched.h: In function 'task_cpu':
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/linux/compiler_types.h:297:9: note: in definition of macro '__compiletime_assert'
   if (!(condition))     \
         ^~~~~~~~~
/kisskb/src/include/linux/compiler_types.h:317:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
  ^~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
                     ^~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
  compiletime_assert_rwonce_type(x);    \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/linux/compiler_types.h:297:9: note: in definition of macro '__compiletime_assert'
   if (!(condition))     \
         ^~~~~~~~~
/kisskb/src/include/linux/compiler_types.h:317:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
  ^~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
                     ^~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
  compiletime_assert_rwonce_type(x);    \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/linux/compiler_types.h:297:9: note: in definition of macro '__compiletime_assert'
   if (!(condition))     \
         ^~~~~~~~~
/kisskb/src/include/linux/compiler_types.h:317:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
  ^~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
                     ^~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
  compiletime_assert_rwonce_type(x);    \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/linux/compiler_types.h:297:9: note: in definition of macro '__compiletime_assert'
   if (!(condition))     \
         ^~~~~~~~~
/kisskb/src/include/linux/compiler_types.h:317:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
  ^~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
                     ^~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
  compiletime_assert_rwonce_type(x);    \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/linux/compiler_types.h:297:9: note: in definition of macro '__compiletime_assert'
   if (!(condition))     \
         ^~~~~~~~~
/kisskb/src/include/linux/compiler_types.h:317:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
  ^~~~~~~~~~~~~~~~~~
/kisskb/src/include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
  compiletime_assert_rwonce_type(x);    \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/linux/compiler_types.h:279:13: note: in definition of macro '__unqual_scalar_typeof'
   _Generic((x),      \
             ^
/kisskb/src/include/asm-generic/rwonce.h:50:2: note: in expansion of macro '__READ_ONCE'
  __READ_ONCE(x);       \
  ^~~~~~~~~~~
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
In file included from ./arch/parisc/include/generated/asm/rwonce.h:1,
                 from /kisskb/src/include/linux/compiler.h:266,
                 from /kisskb/src/include/linux/kernel.h:11,
                 from /kisskb/src/include/linux/list.h:9,
                 from /kisskb/src/include/linux/rculist.h:10,
                 from /kisskb/src/include/linux/pid.h:5,
                 from /kisskb/src/include/linux/sched.h:14,
                 from /kisskb/src/arch/parisc/kernel/asm-offsets.c:20:
/kisskb/src/include/linux/sched.h:2129:38: error: 'const struct thread_info' has no member named 'cpu'
  return READ_ONCE(task_thread_info(p)->cpu);
                                      ^~
/kisskb/src/include/asm-generic/rwonce.h:44:72: note: in definition of macro '__READ_ONCE'
 #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
                                                                        ^
/kisskb/src/include/linux/sched.h:2129:9: note: in expansion of macro 'READ_ONCE'
  return READ_ONCE(task_thread_info(p)->cpu);
         ^~~~~~~~~
In file included from /kisskb/src/arch/parisc/kernel/asm-offsets.c:24:
/kisskb/src/arch/parisc/kernel/asm-offsets.c: In function 'main':
/kisskb/src/include/linux/compiler_types.h:140:35: error: 'struct task_struct' has no member named 'cpu'
 #define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
                                   ^~~~~~~~~~~~~~~~~~
/kisskb/src/include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE'
  asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val))
                                                              ^~~
/kisskb/src/include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof'
 #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                ^~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/parisc/kernel/asm-offsets.c:43:19: note: in expansion of macro 'offsetof'
  DEFINE(TASK_CPU, offsetof(struct task_struct, cpu));
                   ^~~~~~~~
make[2]: *** [/kisskb/src/scripts/Makefile.build:121: arch/parisc/kernel/asm-offsets.s] Error 1
make[1]: *** [/kisskb/src/Makefile:1223: prepare0] Error 2
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 32 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8
# Build took: 0:00:07.242606