Buildresult: powerpc-next/pq2fads_defconfig/powerpc-gcc4.6 built on Mar 5 2018, 12:18

kisskb

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Status:	OK
Date/Time:	Mar 5 2018, 12:18
Duration:	0:00:41.977437
Builder:	ka2
Revision:	powerpc: Keep const vars out of writable .sdata (`26a7f2efa8557bc235ef632d477b1aef6612bbc8)`
Target:	powerpc-next/pq2fads_defconfig/powerpc-gcc4.6
Branch:	powerpc-next
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	pq2fads_defconfig (download)
Log:	Download original Possible warnings (3) kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1816:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1726:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 26a7f2efa8557bc235ef632d477b1aef6612bbc8^{commit} 26a7f2efa8557bc235ef632d477b1aef6612bbc8 already have revision, skipping fetch # git checkout -q -f -B kisskb 26a7f2efa8557bc235ef632d477b1aef6612bbc8 # git clean -qxdf # git log -1 commit 26a7f2efa8557bc235ef632d477b1aef6612bbc8 Author: Segher Boessenkool <segher@kernel.crashing.org> Date: Wed Feb 28 17:02:49 2018 -0800 powerpc: Keep const vars out of writable .sdata Newer gcc will support "-mno-readonly-in-sdata"[1], which makes sure that the optimization on PPC32 for variables getting moved into the .sdata section will not apply to const variables (which must be in .rodata). This was originally noticed in mm/rodata_test.c when rodata_test_data was not static: c0695034 g O .data 00000004 rodata_test_data After this patch with an updated compiler, this is correctly in .rodata. [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82411 Reported-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 26a7f2efa8557bc235ef632d477b1aef6612bbc8 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- pq2fads_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /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/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1816:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1726:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] INFO: Uncompressed kernel (size 0x55b590) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x54af84) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-4.16.0-rc3-g26a7f2e Created: Mon Mar 5 12:19:14 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2720884 Bytes = 2657.11 kB = 2.59 MB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-4.16.0-rc3-g26a7f2e Created: Mon Mar 5 12:19:14 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2745057 Bytes = 2680.72 kB = 2.62 MB Load Address: 00600000 Entry Point: 006007a0 Completed OK # rm -rf /kisskb/build/powerpc-next_pq2fads_defconfig_powerpc # Build took: 0:00:41.977437

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