# git rev-parse -q --verify 6ae3f51825e31ac9ad9f062f00b57a6c9bac3179^{commit}
6ae3f51825e31ac9ad9f062f00b57a6c9bac3179
already have revision, skipping fetch
# git checkout -q -f -B kisskb 6ae3f51825e31ac9ad9f062f00b57a6c9bac3179
# git clean -qxdf
# < git log -1
# commit 6ae3f51825e31ac9ad9f062f00b57a6c9bac3179
# Author: Gustavo A. R. Silva <gustavoars@kernel.org>
# Date:   Fri Jul 14 13:56:37 2023 -0600
# 
#     fs: omfs: Use flexible-array member in struct omfs_extent
#     
#     Memory for 'struct omfs_extent' and a 'e_extent_count' number of extent
#     entries is indirectly allocated through 'bh->b_data', which is a pointer
#     to data within the page. This implies that the member 'e_entry'
#     (which is the start of extent entries) functions more like an array than
#     a single object of type 'struct omfs_extent_entry'.
#     
#     So we better turn this object into a proper array, in this case a
#     flexible-array member, and with that, fix the following
#     -Wstringop-overflow warning seen after building s390 architecture with
#     allyesconfig (GCC 13):
#     
#     fs/omfs/file.c: In function 'omfs_grow_extent':
#     include/linux/fortify-string.h:57:33: warning: writing 16 bytes into a region of size 0 [-Wstringop-overflow=]
#        57 | #define __underlying_memcpy     __builtin_memcpy
#           |                                 ^
#     include/linux/fortify-string.h:648:9: note: in expansion of macro '__underlying_memcpy'
#       648 |         __underlying_##op(p, q, __fortify_size);                        \
#           |         ^~~~~~~~~~~~~
#     include/linux/fortify-string.h:693:26: note: in expansion of macro '__fortify_memcpy_chk'
#       693 | #define memcpy(p, q, s)  __fortify_memcpy_chk(p, q, s,                  \
#           |                          ^~~~~~~~~~~~~~~~~~~~
#     fs/omfs/file.c:170:9: note: in expansion of macro 'memcpy'
#       170 |         memcpy(terminator, entry, sizeof(struct omfs_extent_entry));
#           |         ^~~~~~
#     In file included from fs/omfs/omfs.h:8,
#                      from fs/omfs/file.c:11:
#     fs/omfs/omfs_fs.h:80:34: note: at offset 16 into destination object 'e_entry' of size 16
#        80 |         struct omfs_extent_entry e_entry;       /* start of extent entries */
#           |                                  ^~~~~~~
#     
#     There are some binary differences before and after changes, but this are
#     expected due to the change in the size of 'struct omfs_extent' and the
#     necessary adjusments.
#     
#     This helps with the ongoing efforts to globally enable
#     -Wstringop-overflow.
#     
#     Link: https://github.com/KSPP/linux/issues/330
#     Reviewed-by: Kees Cook <keescook@chromium.org>
#     Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 6ae3f51825e31ac9ad9f062f00b57a6c9bac3179
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/gustavoars_allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_HAVE_FTRACE_MCOUNT_RECORD=n
# Added to kconfig CONFIG_SAMPLES=n
# Added to kconfig CONFIG_MODULE_SIG=n
# < make -s -j 160 ARCH=sparc64 O=/kisskb/build/gustavoars_allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  help
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/gustavoars_allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  olddefconfig
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/gustavoars_allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
WARNING: modpost: drivers/cpufreq/sparc-us2e-cpufreq: section mismatch in reference: cpufreq_us2e_driver+0x20 (section: .data) -> us2e_freq_cpu_init (section: .init.text)
WARNING: modpost: drivers/cpufreq/sparc-us3-cpufreq: section mismatch in reference: cpufreq_us3_driver+0x20 (section: .data) -> us3_freq_cpu_init (section: .init.text)
ERROR: modpost: "__xchg_called_with_bad_pointer" [lib/atomic64_test.ko] undefined!
make[3]: *** [/kisskb/src/scripts/Makefile.modpost:144: Module.symvers] Error 1
make[2]: *** [/kisskb/src/Makefile:1972: modpost] Error 2
make[1]: *** [/kisskb/src/Makefile:234: __sub-make] Error 2
make: *** [Makefile:234: __sub-make] Error 2
Command 'make -s -j 160 ARCH=sparc64 O=/kisskb/build/gustavoars_allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  ' returned non-zero exit status 2.
# rm -rf /kisskb/build/gustavoars_allmodconfig_sparc64-gcc11
# Build took: 0:11:32.176894