# git rev-parse -q --verify d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c^{commit}
d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c
already have revision, skipping fetch
# git checkout -q -f -B kisskb d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c
# git clean -qxdf
# < git log -1
# commit d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c
# Merge: 39192106d4ef 59300b36f85f
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Mar 31 10:14:55 2021 -0700
# 
#     Merge tag 'trace-v5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
#     
#     Pull ftrace fix from Steven Rostedt:
#      "Add check of order < 0 before calling free_pages()
#     
#       The function addresses that are traced by ftrace are stored in pages,
#       and the size is held in a variable. If there's some error in creating
#       them, the allocate ones will be freed. In this case, it is possible
#       that the order of pages to be freed may end up being negative due to a
#       size of zero passed to get_count_order(), and then that negative
#       number will cause free_pages() to free a very large section.
#     
#       Make sure that does not happen"
#     
#     * tag 'trace-v5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
#       ftrace: Check if pages were allocated before calling free_pages()
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c
# < make -s -j 120 ARCH=arm O=/kisskb/build/linus_pxa255-idp_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  pxa255-idp_defconfig
# < make -s -j 120 ARCH=arm O=/kisskb/build/linus_pxa255-idp_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  help
# make -s -j 120 ARCH=arm O=/kisskb/build/linus_pxa255-idp_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  olddefconfig
# make -s -j 120 ARCH=arm O=/kisskb/build/linus_pxa255-idp_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
Completed OK
# rm -rf /kisskb/build/linus_pxa255-idp_defconfig_arm-gcc4.9
# Build took: 0:00:30.909563