# 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) # 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 : # 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) # Reviewed-by: Thomas Gleixner # Cc: # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 9a48d604672220545d209e9996c2a1edbb5637f6 # < make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 allyesconfig # 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 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 help # make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig .config:13048:warning: override: reassigning to symbol GCC_PLUGIN_LATENT_ENTROPY .config:13052:warning: override: reassigning to symbol UML_NET_ETHERTAP .config:13054:warning: override: reassigning to symbol UML_NET_SLIP .config:13059:warning: override: reassigning to symbol UML_NET_SLIRP # make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 /kisskb/src/drivers/mtd/spi-nor/spansion.c: In function 'cypress_nor_set_addr_mode_nbytes': /kisskb/src/drivers/mtd/spi-nor/spansion.c:364:27: error: 'op' is used uninitialized [-Werror=uninitialized] 364 | struct spi_mem_op op; | ^~ /kisskb/src/drivers/mtd/spi-nor/spansion.c:364:27: note: 'op' declared here 364 | struct spi_mem_op op; | ^~ /kisskb/src/drivers/mtd/spi-nor/spansion.c: In function 's25fs256t_post_bfpt_fixup': /kisskb/src/drivers/mtd/spi-nor/spansion.c:495:27: error: 'op' is used uninitialized [-Werror=uninitialized] 495 | struct spi_mem_op op; | ^~ /kisskb/src/drivers/mtd/spi-nor/spansion.c:495:27: note: 'op' declared here 495 | struct spi_mem_op op; | ^~ cc1: all warnings being treated as errors make[5]: *** [/kisskb/src/scripts/Makefile.build:252: drivers/mtd/spi-nor/spansion.o] Error 1 make[5]: *** Waiting for unfinished jobs.... make[4]: *** [/kisskb/src/scripts/Makefile.build:494: drivers/mtd/spi-nor] Error 2 make[4]: *** Waiting for unfinished jobs.... make[3]: *** [/kisskb/src/scripts/Makefile.build:494: drivers/mtd] Error 2 make[3]: *** Waiting for unfinished jobs.... /kisskb/src/drivers/spi/spi-stm32-qspi.c: In function 'stm32_qspi_dirmap_read': /kisskb/src/drivers/spi/spi-stm32-qspi.c:523:27: error: 'op' is used uninitialized [-Werror=uninitialized] 523 | struct spi_mem_op op; | ^~ /kisskb/src/drivers/spi/spi-stm32-qspi.c:523:27: note: 'op' declared here 523 | struct spi_mem_op op; | ^~ /kisskb/src/drivers/spi/spi-stm32-qspi.c: In function 'stm32_qspi_transfer_one_message': /kisskb/src/drivers/spi/spi-stm32-qspi.c:564:27: error: 'op' is used uninitialized [-Werror=uninitialized] 564 | struct spi_mem_op op; | ^~ /kisskb/src/drivers/spi/spi-stm32-qspi.c:564:27: note: 'op' declared here 564 | struct spi_mem_op op; | ^~ cc1: all warnings being treated as errors make[4]: *** [/kisskb/src/scripts/Makefile.build:252: drivers/spi/spi-stm32-qspi.o] Error 1 make[4]: *** Waiting for unfinished jobs.... make[3]: *** [/kisskb/src/scripts/Makefile.build:494: drivers/spi] Error 2 make[2]: *** [/kisskb/src/scripts/Makefile.build:494: drivers] Error 2 make[1]: *** [/kisskb/src/Makefile:2026: .] Error 2 make: *** [Makefile:226: __sub-make] Error 2 Command 'make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus_um-allyesconfig_um-x86_64-gcc12 # Build took: 0:11:45.361373