# git rev-parse -q --verify cafa0010cd51fb711fdcb50fc55f394c5f167a0a^{commit}
cafa0010cd51fb711fdcb50fc55f394c5f167a0a
already have revision, skipping fetch
# git checkout -q -f -B kisskb cafa0010cd51fb711fdcb50fc55f394c5f167a0a
# git clean -qxdf
# < git log -1
# commit cafa0010cd51fb711fdcb50fc55f394c5f167a0a
# Author: Joe Perches <joe@perches.com>
# Date:   Mon Aug 20 13:15:26 2018 -0700
# 
#     Raise the minimum required gcc version to 4.6
#     
#     Various architectures fail to build properly with older versions of the
#     gcc compiler.
#     
#     An example from Guenter Roeck in thread [1]:
#     >
#     >   In file included from ./include/linux/mm.h:17:0,
#     >                    from ./include/linux/pid_namespace.h:7,
#     >                    from ./include/linux/ptrace.h:10,
#     >                    from arch/openrisc/kernel/asm-offsets.c:32:
#     >   ./include/linux/mm_types.h:497:16: error: flexible array member in otherwise empty struct
#     >
#     > This is just an example with gcc 4.5.1 for or32. I have seen the problem
#     > with gcc 4.4 (for unicore32) as well.
#     
#     So update the minimum required version of gcc to 4.6.
#     
#     [1] https://lore.kernel.org/lkml/20180814170904.GA12768@roeck-us.net/
#     
#     Miscellanea:
#     
#      - Update Documentation/process/changes.rst
#     
#      - Remove and consolidate version test blocks in compiler-gcc.h for
#        versions lower than 4.6
#     
#     Signed-off-by: Joe Perches <joe@perches.com>
#     Reviewed-by: Kees Cook <keescook@chromium.org>
#     Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < git log --format=%s --max-count=1 cafa0010cd51fb711fdcb50fc55f394c5f167a0a
# < make -s -j 8 ARCH=arm O=/kisskb/build/linus_multi_v7_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  multi_v7_defconfig
# make -s -j 8 ARCH=arm O=/kisskb/build/linus_multi_v7_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
/kisskb/src/arch/arm/crypto/Makefile:27: These CRC Extensions modules need binutils 2.23 or higher
/kisskb/src/arch/arm/crypto/Makefile:28:  crc32-arm-ce.o
/kisskb/src/arch/arm/crypto/Makefile:37: These ARMv8 Crypto Extensions modules need binutils 2.23 or higher
/kisskb/src/arch/arm/crypto/Makefile:38:  aes-arm-ce.o sha1-arm-ce.o sha2-arm-ce.o ghash-arm-ce.o
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:148:32: warning: 'levelspread[<U9960>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:96:6: note: 'levelspread[<U9960>]' was declared here
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2511:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1833:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write':
/kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here
arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dtb: Warning (graph_endpoint): /soc/mdp@5100000/ports/port@3/endpoint: graph connection to node '/soc/hdmi-tx@4a00000/ports/port@0/endpoint' is not bidirectional
arch/arm/boot/dts/rk3288-evb-act8846.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
arch/arm/boot/dts/rk3288-evb-rk808.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
arch/arm/boot/dts/rk3288-veyron-jaq.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
arch/arm/boot/dts/rk3288-veyron-jerry.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
arch/arm/boot/dts/rk3288-veyron-minnie.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
arch/arm/boot/dts/rk3288-veyron-pinky.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
arch/arm/boot/dts/rk3288-veyron-speedy.dtb: Warning (graph_endpoint): /dp@ff970000/ports/port@1/endpoint: graph node unit address error, expected "0"
/kisskb/src/drivers/clk/sunxi-ng/ccu_mux.c: In function 'ccu_mux_helper_determine_rate':
/kisskb/src/drivers/clk/sunxi-ng/ccu_mux.c:153:22: warning: 'best_parent' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1448:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1405:6: note: 'pwr_level_cisco' was declared here
/kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence':
/kisskb/src/drivers/dma-buf/reservation.c:226:6: warning: 'k' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c: In function 'get_scale_config':
/kisskb/src/drivers/gpu/drm/msm/disp/mdp5/mdp5.xml.h:1036:16: warning: 'uv_filter' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c:706:22: note: 'uv_filter' was declared here
/kisskb/src/drivers/gpu/drm/sun4i/sun4i_tcon.c: In function 'sun4i_tcon_bind':
/kisskb/src/drivers/gpu/drm/sun4i/sun4i_tcon.c:1041:35: warning: 'has_lvds_alt' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/soc/qcom/wcnss_ctrl.c: In function 'wcnss_async_probe':
/kisskb/src/drivers/soc/qcom/wcnss_ctrl.c:307:5: warning: 'expect_cbc' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c: In function 'gk104_top_oneinit':
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_multi_v7_defconfig_arm
# Build took: 0:03:39.625172