# git rev-parse -q --verify ffcf9c5700e49c0aee42dcba9a12ba21338e8136^{commit} ffcf9c5700e49c0aee42dcba9a12ba21338e8136 already have revision, skipping fetch # git checkout -q -f -B kisskb ffcf9c5700e49c0aee42dcba9a12ba21338e8136 # git clean -qxdf # < git log -1 # commit ffcf9c5700e49c0aee42dcba9a12ba21338e8136 # Author: Nick Desaulniers # Date: Wed Aug 10 15:24:41 2022 -0700 # # x86: link vdso and boot with -z noexecstack --no-warn-rwx-segments # # Users of GNU ld (BFD) from binutils 2.39+ will observe multiple # instances of a new warning when linking kernels in the form: # # ld: warning: arch/x86/boot/pmjump.o: missing .note.GNU-stack section implies executable stack # ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker # ld: warning: arch/x86/boot/compressed/vmlinux has a LOAD segment with RWX permissions # # Generally, we would like to avoid the stack being executable. Because # there could be a need for the stack to be executable, assembler sources # have to opt-in to this security feature via explicit creation of the # .note.GNU-stack feature (which compilers create by default) or command # line flag --noexecstack. Or we can simply tell the linker the # production of such sections is irrelevant and to link the stack as # --noexecstack. # # LLVM's LLD linker defaults to -z noexecstack, so this flag isn't # strictly necessary when linking with LLD, only BFD, but it doesn't hurt # to be explicit here for all linkers IMO. --no-warn-rwx-segments is # currently BFD specific and only available in the current latest release, # so it's wrapped in an ld-option check. # # While the kernel makes extensive usage of ELF sections, it doesn't use # permissions from ELF segments. # # Link: https://lore.kernel.org/linux-block/3af4127a-f453-4cf7-f133-a181cce06f73@kernel.dk/ # Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ba951afb99912da01a6e8434126b8fac7aa75107 # Link: https://github.com/llvm/llvm-project/issues/57009 # Reported-and-tested-by: Jens Axboe # Suggested-by: Fangrui Song # Signed-off-by: Nick Desaulniers # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-ld --version # < git log --format=%s --max-count=1 ffcf9c5700e49c0aee42dcba9a12ba21338e8136 # < make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m68k-allmodconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # < make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m68k-allmodconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- help # make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m68k-allmodconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- olddefconfig # make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m68k-allmodconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- In file included from /kisskb/src/include/linux/bitops.h:67, from /kisskb/src/include/linux/thread_info.h:27, from /kisskb/src/include/asm-generic/preempt.h:5, from ./arch/m68k/include/generated/asm/preempt.h:1, from /kisskb/src/include/linux/preempt.h:78, from /kisskb/src/arch/m68k/include/asm/irqflags.h:6, from /kisskb/src/include/linux/irqflags.h:16, from /kisskb/src/arch/m68k/include/asm/atomic.h:6, from /kisskb/src/include/linux/atomic.h:7, from /kisskb/src/include/linux/rcupdate.h:25, from /kisskb/src/include/linux/rculist.h:11, from /kisskb/src/include/linux/pid.h:5, from /kisskb/src/include/linux/sched.h:14, from /kisskb/src/include/linux/ratelimit.h:6, from /kisskb/src/include/linux/dev_printk.h:16, from /kisskb/src/include/linux/device.h:15, from /kisskb/src/include/linux/dma-mapping.h:7, from /kisskb/src/drivers/net/ipa/ipa_mem.c:10: /kisskb/src/drivers/net/ipa/ipa_mem.c: In function 'ipa_mem_init': /kisskb/src/arch/m68k/include/asm/bitops.h:347:20: error: array subscript 2 is above array bounds of 'long unsigned int[1]' [-Werror=array-bounds] while (!(num = ~*p++)) { ~^~ cc1: all warnings being treated as errors make[4]: *** [/kisskb/src/scripts/Makefile.build:249: drivers/net/ipa/ipa_mem.o] Error 1 make[3]: *** [/kisskb/src/scripts/Makefile.build:465: drivers/net/ipa] Error 2 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.build:465: drivers/net] Error 2 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [/kisskb/src/Makefile:1855: drivers] Error 2 make: *** [Makefile:222: __sub-make] Error 2 Command 'make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m68k-allmodconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus_m68k-allmodconfig_m68k-gcc8 # Build took: 0:16:02.475220