diff options
| -rw-r--r-- | lib/Kconfig.debug | 5 | ||||
| -rwxr-xr-x | scripts/link-vmlinux.sh | 24 |
2 files changed, 29 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 21d9c5f6e7ec..977b5a190297 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -369,6 +369,11 @@ config STACK_VALIDATION For more information, see tools/objtool/Documentation/stack-validation.txt. +config VMLINUX_VALIDATION + bool + depends on STACK_VALIDATION && DEBUG_ENTRY && !PARAVIRT + default y + config DEBUG_FORCE_WEAK_PER_CPU bool "Force weak per-cpu definitions" depends on DEBUG_KERNEL diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index d09ab4afbda4..3adef49250af 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -55,6 +55,29 @@ modpost_link() ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${objects} } +objtool_link() +{ + local objtoolopt; + + if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then + objtoolopt="check" + if [ -z "${CONFIG_FRAME_POINTER}" ]; then + objtoolopt="${objtoolopt} --no-fp" + fi + if [ -n "${CONFIG_GCOV_KERNEL}" ]; then + objtoolopt="${objtoolopt} --no-unreachable" + fi + if [ -n "${CONFIG_RETPOLINE}" ]; then + objtoolopt="${objtoolopt} --retpoline" + fi + if [ -n "${CONFIG_X86_SMAP}" ]; then + objtoolopt="${objtoolopt} --uaccess" + fi + info OBJTOOL ${1} + tools/objtool/objtool ${objtoolopt} ${1} + fi +} + # Link of vmlinux # ${1} - output file # ${2}, ${3}, ... - optional extra .o files @@ -251,6 +274,7 @@ ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1 #link vmlinux.o info LD vmlinux.o modpost_link vmlinux.o +objtool_link vmlinux.o # modpost vmlinux.o to check for section mismatches ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1 |