Buildresult: powerpc-next/alpha-defconfig/alpha-gcc4.9 built on Oct 30 2020, 03:39

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Status:	OK
Date/Time:	Oct 30 2020, 03:39
Duration:	0:00:29.394484
Builder:	ka4
Revision:	powerpc: Avoid broken GCC __attribute__((optimize)) (`8d17c0c83c07bad137e2df3a45e9cd4e80d85418)`
Target:	powerpc-next/alpha-defconfig/alpha-gcc4.9
Branch:	powerpc-next
Compiler:	alpha-gcc4.9 (alpha-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	defconfig (download)
Log:	Download original Possible warnings (2) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] WARNING: modpost: "saved_config" [vmlinux] is COMMON symbol Full Log # git rev-parse -q --verify 8d17c0c83c07bad137e2df3a45e9cd4e80d85418^{commit} 8d17c0c83c07bad137e2df3a45e9cd4e80d85418 already have revision, skipping fetch # git checkout -q -f -B kisskb 8d17c0c83c07bad137e2df3a45e9cd4e80d85418 # git clean -qxdf # < git log -1 # commit 8d17c0c83c07bad137e2df3a45e9cd4e80d85418 # Author: Ard Biesheuvel <ardb@kernel.org> # Date: Wed Oct 28 09:04:33 2020 +0100 # # powerpc: Avoid broken GCC __attribute__((optimize)) # # Commit 7053f80d9696 ("powerpc/64: Prevent stack protection in early # boot") introduced a couple of uses of __attribute__((optimize)) with # function scope, to disable the stack protector in some early boot # code. # # Unfortunately, and this is documented in the GCC man pages [0], # overriding function attributes for optimization is broken, and is only # supported for debug scenarios, not for production: the problem appears # to be that setting GCC -f flags using this method will cause it to # forget about some or all other optimization settings that have been # applied. # # So the only safe way to disable the stack protector is to disable it # for the entire source file. # # [0] https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html # # Fixes: 7053f80d9696 ("powerpc/64: Prevent stack protection in early boot") # Signed-off-by: Ard Biesheuvel <ardb@kernel.org> # [mpe: Drop one remaining use of __nostackprotector, reported by snowpatch] # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20201028080433.26799-1-ardb@kernel.org # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-ld --version # < git log --format=%s --max-count=1 8d17c0c83c07bad137e2df3a45e9cd4e80d85418 # < make -s -j 120 ARCH=alpha O=/kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux- defconfig # make -s -j 120 ARCH=alpha O=/kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] WARNING: modpost: "saved_config" [vmlinux] is COMMON symbol Kernel arch/alpha/boot/vmlinux.gz is ready Completed OK # rm -rf /kisskb/build/powerpc-next_alpha-defconfig_alpha-gcc4.9 # Build took: 0:00:29.394484

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