# 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 # 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 # Reviewed-by: Kees Cook # Reviewed-by: Nick Desaulniers # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < git log --format=%s --max-count=1 cafa0010cd51fb711fdcb50fc55f394c5f167a0a # < make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- randconfig KCONFIG_SEED=0x54394AA4 # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n # Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n # Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n # yes \n | make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- oldconfig yes: standard output: Broken pipe yes: write error # make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- /kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq': /kisskb/src/arch/x86/kernel/apic/io_apic.c:1034:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/ipc/shm.c: In function 'ksys_shmdt': /kisskb/src/ipc/shm.c:1658:59: warning: 'file' 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/arch/x86/net/bpf_jit_comp.c: In function 'bpf_int_jit_compile': /kisskb/src/arch/x86/net/bpf_jit_comp.c:1178:19: warning: 'proglen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/sched/core.c: In function 'update_rq_clock_task': /kisskb/src/kernel/sched/core.c:139:6: warning: unused variable 'steal' [-Wunused-variable] /kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap': /kisskb/src/arch/x86/kernel/e820.c:651:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/x86/kernel/hw_breakpoint.c: In function 'hw_breakpoint_arch_parse': /kisskb/src/arch/x86/kernel/hw_breakpoint.c:366:18: warning: 'align' 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/x86/kernel/.tmp_machine_kexec_64.o: warning: objtool: arch_kexec_kernel_image_load()+0x37: unsupported stack register modification kernel/.tmp_kexec_file.o: warning: objtool: arch_kexec_kernel_image_load()+0x1d: unsupported stack register modification /kisskb/src/fs/splice.c: In function '__do_compat_sys_vmsplice': /kisskb/src/fs/splice.c:1384:29: warning: 'type' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/splice.c: In function '__do_sys_vmsplice': /kisskb/src/fs/splice.c:1358:22: warning: 'type' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/core/pcm_iec958.c: In function 'create_iec958_consumer': /kisskb/src/sound/core/pcm_iec958.c:80:9: warning: 'ws' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl': /kisskb/src/lib/mpi/mpicoder.c:352:8: warning: 'buff' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_replace': /kisskb/src/drivers/dma-buf/reservation.c:211:7: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/rhashtable.c: In function 'rhashtable_rehash_one': /kisskb/src/lib/rhashtable.c:267:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic': /kisskb/src/net/core/gen_stats.c:161:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list': /kisskb/src/net/core/dev.c:3344:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/drm_atomic.c: In function 'drm_atomic_connector_check': /kisskb/src/drivers/gpu/drm/drm_atomic.c:760:38: warning: 'crtc_state' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/iio/adc/sc27xx_adc.c: In function 'sc27xx_adc_read_raw': /kisskb/src/drivers/iio/adc/sc27xx_adc.c:285:8: warning: 'tmp' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ncsi/ncsi-manage.c: In function 'set_one_vid': /kisskb/src/net/ncsi/ncsi-manage.c:625:19: warning: 'vid' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/iio/proximity/isl29501.c: In function 'isl29501_register_write': /kisskb/src/drivers/iio/proximity/isl29501.c:253:34: warning: 'msb' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/sctp/output.c: In function 'sctp_packet_config': /kisskb/src/include/net/sock.h:1926:19: warning: 'sk' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/sctp/output.c:94:15: note: 'sk' was declared here /kisskb/src/net/tipc/socket.c: In function 'tipc_recvmsg': /kisskb/src/net/tipc/socket.c:1691:27: warning: 'copy' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/mtd/ubi/eba.c: In function 'try_write_vid_and_data': /kisskb/src/drivers/mtd/ubi/eba.c:1001:7: warning: 'opnum' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/video/backlight/adp8860_bl.c: In function 'adp8860_bl_ambient_light_zone_show': /kisskb/src/drivers/video/backlight/adp8860_bl.c:601:32: warning: 'reg_val' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/video/backlight/adp8860_bl.c: In function 'adp8860_bl_ambient_light_level_show': /kisskb/src/drivers/video/backlight/adp8860_bl.c:579:10: warning: 'reg_val' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/video/backlight/adp8860_bl.c:579:10: warning: 'ret_val' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/video/backlight/adp8860_bl.c: In function 'adp8860_show': /kisskb/src/drivers/video/backlight/adp8860_bl.c:443:16: warning: 'reg_val' may be used uninitialized in this function [-Wuninitialized] In file included from /kisskb/src/drivers/rtc/rtc-da9052.c:21:0: /kisskb/src/include/linux/mfd/da9052/da9052.h: In function 'da9052_group_read': /kisskb/src/include/linux/mfd/da9052/da9052.h:157:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] net/ipv4/netfilter/nft_chain_nat_ipv4.o: In function `nft_nat_do_chain': nft_chain_nat_ipv4.c:(.text+0x56): undefined reference to `nft_do_chain' net/ipv4/netfilter/nft_chain_nat_ipv4.o: In function `nft_chain_nat_init': nft_chain_nat_ipv4.c:(.init.text+0x9): undefined reference to `nft_register_chain_type' net/ipv4/netfilter/nft_chain_nat_ipv4.o: In function `nft_chain_nat_exit': nft_chain_nat_ipv4.c:(.exit.text+0x8): undefined reference to `nft_unregister_chain_type' /kisskb/src/Makefile:1021: recipe for target 'vmlinux' failed make[1]: *** [vmlinux] Error 1 Makefile:146: recipe for target 'sub-make' failed make: *** [sub-make] Error 2 Command 'make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64 # Build took: 0:02:56.496988