Buildresult: powerpc-next/mpc885_ads_defconfig+HUGETLB/powerpc-gcc4.9 built on Jul 16 2020, 18:42

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	Jul 16 2020, 18:42
Duration:	0:01:03.703108
Builder:	ka2
Revision:	powerpc/vdso: Fix vdso cpu truncation (`a9f675f950a07d5c1dbcbb97aabac56f5ed085e3)`
Target:	powerpc-next/mpc885_ads_defconfig+HUGETLB/powerpc-gcc4.9
Branch:	powerpc-next
Compiler:	powerpc-gcc4.9 (powerpc64-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	mpc885_ads_defconfig+HUGETLB (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify a9f675f950a07d5c1dbcbb97aabac56f5ed085e3^{commit} a9f675f950a07d5c1dbcbb97aabac56f5ed085e3 already have revision, skipping fetch # git checkout -q -f -B kisskb a9f675f950a07d5c1dbcbb97aabac56f5ed085e3 # git clean -qxdf # < git log -1 # commit a9f675f950a07d5c1dbcbb97aabac56f5ed085e3 # Author: Milton Miller <miltonm@us.ibm.com> # Date: Thu Jul 16 09:37:04 2020 +1000 # # powerpc/vdso: Fix vdso cpu truncation # # The code in vdso_cpu_init that exposes the cpu and numa node to # userspace via SPRG_VDSO incorrctly masks the cpu to 12 bits. This means # that any kernel running on a box with more than 4096 threads (NR_CPUS # advertises a limit of of 8192 cpus) would expose userspace to two cpu # contexts running at the same time with the same cpu number. # # Note: I'm not aware of any distro shipping a kernel with support for more # than 4096 threads today, nor of any system image that currently exceeds # 4096 threads. Found via code browsing. # # Fixes: 18ad51dd342a7eb09dbcd059d0b451b616d4dafc ("powerpc: Add VDSO version of getcpu") # Signed-off-by: Milton Miller <miltonm@us.ibm.com> # Signed-off-by: Anton Blanchard <anton@linux.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20200715233704.1352257-1-anton@ozlabs.org # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 a9f675f950a07d5c1dbcbb97aabac56f5ed085e3 # < make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc885_ads_defconfig # Added to kconfig CONFIG_HUGETLBFS=y # < make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- Image Name: Linux-5.8.0-rc2-31953-ga9f675f95 Created: Thu Jul 16 18:43:45 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1999240 Bytes = 1952.38 KiB = 1.91 MiB Load Address: 00400000 Entry Point: 00400204 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.9 # Build took: 0:01:03.703108

© Michael Ellerman 2006-2018.