Buildresult: powerpc-fixes/s390-defconfig/s390x-gcc8 built on Feb 5, 23:38

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Status:	OK
Date/Time:	Feb 5, 23:38
Duration:	0:05:03.328000
Builder:	alpine2
Revision:	powerpc/kasan: Fix addr error caused by page alignment (`4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0)`
Target:	powerpc-fixes/s390-defconfig/s390x-gcc8
Branch:	powerpc-fixes
Compiler:	s390x-gcc8 (s390-linux-gcc (GCC) 8.5.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	defconfig (download)
Log:	Download original Possible warnings (1) .config:3740:warning: override: reassigning to symbol DEBUG_INFO_BTF Full Log # git rev-parse -q --verify 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0^{commit} 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0 already have revision, skipping fetch # git checkout -q -f -B kisskb 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0 # git clean -qxdf # < git log -1 # commit 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0 # Author: Jiangfeng Xiao <xiaojiangfeng@huawei.com> # Date: Tue Jan 23 09:45:59 2024 +0800 # # powerpc/kasan: Fix addr error caused by page alignment # # In kasan_init_region, when k_start is not page aligned, at the begin of # for loop, k_cur = k_start & PAGE_MASK is less than k_start, and then # `va = block + k_cur - k_start` is less than block, the addr va is invalid, # because the memory address space from va to block is not alloced by # memblock_alloc, which will not be reserved by memblock_reserve later, it # will be used by other places. # # As a result, memory overwriting occurs. # # for example: # int __init __weak kasan_init_region(void start, size_t size) # { # [...] # / if say block(dcd97000) k_start(feef7400) k_end(feeff3fe) / # block = memblock_alloc(k_end - k_start, PAGE_SIZE); # [...] # for (k_cur = k_start & PAGE_MASK; k_cur < k_end; k_cur += PAGE_SIZE) { # / at the begin of for loop # * block(dcd97000) va(dcd96c00) k_cur(feef7000) k_start(feef7400) # * va(dcd96c00) is less than block(dcd97000), va is invalid # / # void va = block + k_cur - k_start; # [...] # } # [...] # } # # Therefore, page alignment is performed on k_start before # memblock_alloc() to ensure the validity of the VA address. # # Fixes: 663c0c9496a6 ("powerpc/kasan: Fix shadow area set up for modules.") # Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://msgid.link/1705974359-43790-1-git-send-email-xiaojiangfeng@huawei.com # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/s390-linux/bin/s390-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/s390-linux/bin/s390-linux-ld --version # < git log --format=%s --max-count=1 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0 # make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-fixes_defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/s390-linux/bin/s390-linux- defconfig # Added to kconfig CONFIG_DEBUG_INFO_BTF=n # Added to kconfig # < make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-fixes_defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/s390-linux/bin/s390-linux- help # make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-fixes_defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/s390-linux/bin/s390-linux- olddefconfig .config:3740:warning: override: reassigning to symbol DEBUG_INFO_BTF # make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-fixes_defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/s390-linux/bin/s390-linux- Completed OK # rm -rf /kisskb/build/powerpc-fixes_defconfig_s390x-gcc8 # Build took: 0:05:03.328000

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