# git rev-parse -q --verify 9a48d604672220545d209e9996c2a1edbb5637f6^{commit}
9a48d604672220545d209e9996c2a1edbb5637f6
already have revision, skipping fetch
# git checkout -q -f -B kisskb 9a48d604672220545d209e9996c2a1edbb5637f6
# git clean -qxdf
# < git log -1
# commit 9a48d604672220545d209e9996c2a1edbb5637f6
# Author: Borislav Petkov (AMD) <bp@alien8.de>
# Date:   Fri May 12 23:12:26 2023 +0200
# 
#     x86/retbleed: Fix return thunk alignment
#     
#     SYM_FUNC_START_LOCAL_NOALIGN() adds an endbr leading to this layout
#     (leaving only the last 2 bytes of the address):
#     
#       3bff <zen_untrain_ret>:
#       3bff:       f3 0f 1e fa             endbr64
#       3c03:       f6                      test   $0xcc,%bl
#     
#       3c04 <__x86_return_thunk>:
#       3c04:       c3                      ret
#       3c05:       cc                      int3
#       3c06:       0f ae e8                lfence
#     
#     However, "the RET at __x86_return_thunk must be on a 64 byte boundary,
#     for alignment within the BTB."
#     
#     Use SYM_START instead.
#     
#     Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
#     Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
#     Cc: <stable@kernel.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 9a48d604672220545d209e9996c2a1edbb5637f6
# < make -s -j 120 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allmodconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_KCOV=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_GCC_PLUGIN_STRUCTLEAK=n
# Added to kconfig CONFIG_GCC_PLUGIN_RANDSTRUCT=n
# Added to kconfig CONFIG_UML_NET=n
# Added to kconfig CONFIG_UML_NET_ETHERTAP=n
# Added to kconfig CONFIG_UML_NET_TUNTAP=n
# Added to kconfig CONFIG_UML_NET_SLIP=n
# Added to kconfig CONFIG_UML_NET_DAEMON=n
# Added to kconfig CONFIG_UML_NET_VDE=n
# Added to kconfig CONFIG_UML_NET_MCAST=n
# Added to kconfig CONFIG_UML_NET_PCAP=n
# Added to kconfig CONFIG_UML_NET_SLIRP=n
# Added to kconfig CONFIG_GCOV_KERNEL=n
# Added to kconfig CONFIG_DEBUG_INFO_BTF=n
# Added to kconfig CONFIG_BPF_PRELOAD=n
# < make -s -j 120 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 120 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
.config:12811:warning: override: reassigning to symbol GCC_PLUGIN_SANCOV
.config:12816:warning: override: reassigning to symbol UML_NET_ETHERTAP
.config:12818:warning: override: reassigning to symbol UML_NET_SLIP
.config:12823:warning: override: reassigning to symbol UML_NET_SLIRP
# make -s -j 120 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/um/os-Linux/util.c:17:24: fatal error: sys/random.h: No such file or directory
compilation terminated.
make[3]: *** [/kisskb/src/scripts/Makefile.build:252: arch/um/os-Linux/util.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:494: arch/um/os-Linux] Error 2
make[2]: *** Waiting for unfinished jobs....
/kisskb/src/arch/um/drivers/harddog_user.c:6:19: fatal error: stdio.h: No such file or directory
compilation terminated.
make[3]: *** [/kisskb/src/scripts/Makefile.build:252: arch/um/drivers/harddog_user.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:494: arch/um/drivers] Error 2
make[1]: *** [/kisskb/src/Makefile:2026: .] Error 2
make: *** [Makefile:226: __sub-make] Error 2
Command 'make -s -j 120 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_um-allmodconfig_um-x86_64
# Build took: 0:09:46.888921