Buildresult: powerpc-next/40x/obs600_defconfig/powerpc-gcc5 built on Jun 7 2018, 00:35

kisskb

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Status:	OK
Date/Time:	Jun 7 2018, 00:35
Duration:	0:00:33.568016
Builder:	ka2
Revision:	powerpc/64s/radix: Fix missing ptesync in flush_cache_vmap (`ff5bc793e47b537bf3e904fada585e102c54dd8b)`
Target:	powerpc-next/40x/obs600_defconfig/powerpc-gcc5
Branch:	powerpc-next
Compiler:	powerpc-gcc5 (powerpc64-linux-gcc (GCC) 5.3.0)
Config:	40x/obs600_defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify ff5bc793e47b537bf3e904fada585e102c54dd8b^{commit} ff5bc793e47b537bf3e904fada585e102c54dd8b already have revision, skipping fetch # git checkout -q -f -B kisskb ff5bc793e47b537bf3e904fada585e102c54dd8b # git clean -qxdf # < git log -1 # commit ff5bc793e47b537bf3e904fada585e102c54dd8b # Author: Nicholas Piggin <npiggin@gmail.com> # Date: Wed Jun 6 11:40:08 2018 +1000 # # powerpc/64s/radix: Fix missing ptesync in flush_cache_vmap # # There is a typo in f1cb8f9beb ("powerpc/64s/radix: avoid ptesync after # set_pte and ptep_set_access_flags") config ifdef, which results in the # necessary ptesync not being issued after vmalloc. # # This causes random kernel faults in module load, bpf load, anywhere # that vmalloc mappings are used. # # After correcting the code, this survives a guest kernel booting # hundreds of times where previously there would be a crash every few # boots (I haven't noticed the crash on host, perhaps due to different # TLB and page table walking behaviour in hardware). # # A memory clobber is also added to the flush, just to be sure it won't # be reordered with the pte set or the subsequent mapping access. # # Fixes: f1cb8f9beb ("powerpc/64s/radix: avoid ptesync after set_pte and ptep_set_access_flags") # Signed-off-by: Nicholas Piggin <npiggin@gmail.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < git log --format=%s --max-count=1 ff5bc793e47b537bf3e904fada585e102c54dd8b # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 40x/obs600_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x481b18) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Thu Jun 7 00:35:37 2018 Image Type: PowerPC Linux Multi-File Image (gzip compressed) Data Size: 2314558 Bytes = 2260.31 kB = 2.21 MB Load Address: 00000000 Entry Point: 00000000 Contents: Image 0: 2307671 Bytes = 2253.58 kB = 2.20 MB Image 1: 3 Bytes = 0.00 kB = 0.00 MB Image 2: 6866 Bytes = 6.71 kB = 0.01 MB Completed OK # rm -rf /kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc-5.3 # Build took: 0:00:33.568016

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