diff options
| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2022-04-19 19:05:09 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-05-27 13:34:43 +0300 |
| commit | 5f3da8c08508df82823566c32f753071c8ad36af (patch) | |
| tree | b2f63ac85502f74ba1f9774c22f5b90292d1947c | |
| parent | 7e284070abe53d448517b80493863595af4ab5f0 (diff) | |
| download | linux-5f3da8c08508df82823566c32f753071c8ad36af.tar.xz | |
objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
Allow an arch specify that it has objtool uaccess validation with
CONFIG_HAVE_UACCESS_VALIDATION. For now, doing so unconditionally
selects CONFIG_OBJTOOL.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/d393d5e2fe73aec6e8e41d5c24f4b6fe8583f2d8.1650384225.git.jpoimboe@redhat.com
| -rw-r--r-- | arch/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 1 | ||||
| -rw-r--r-- | scripts/Makefile.build | 2 | ||||
| -rwxr-xr-x | scripts/link-vmlinux.sh | 4 |
4 files changed, 9 insertions, 2 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 904ed51736d4..cb2954027d10 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1050,6 +1050,10 @@ config HAVE_NOINSTR_HACK config HAVE_NOINSTR_VALIDATION bool +config HAVE_UACCESS_VALIDATION + bool + select OBJTOOL + config HAVE_STACK_VALIDATION bool help diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index cf531fbcd229..5f41f3c3df9a 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -258,6 +258,7 @@ config X86 select HAVE_PREEMPT_DYNAMIC_CALL select HAVE_RSEQ select HAVE_SYSCALL_TRACEPOINTS + select HAVE_UACCESS_VALIDATION if HAVE_OBJTOOL select HAVE_UNSTABLE_SCHED_CLOCK select HAVE_USER_RETURN_NOTIFIER select HAVE_GENERIC_VDSO diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 06400504150b..6a663b27b286 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -218,7 +218,7 @@ objtool_args = \ $(if $(CONFIG_SLS), --sls) \ $(if $(CONFIG_STACK_VALIDATION), --stackval) \ $(if $(CONFIG_HAVE_STATIC_CALL_INLINE), --static-call) \ - --uaccess \ + $(if $(CONFIG_HAVE_UACCESS_VALIDATION), --uaccess) \ $(if $(linked-object), --link) \ $(if $(part-of-module), --module) \ $(if $(CONFIG_GCOV_KERNEL), --no-unreachable) diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index a7f6196c7e41..fd578c380919 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -134,7 +134,9 @@ objtool_link() objtoolopt="${objtoolopt} --static-call" fi - objtoolopt="${objtoolopt} --uaccess" + if is_enabled CONFIG_HAVE_UACCESS_VALIDATION; then + objtoolopt="${objtoolopt} --uaccess" + fi fi if is_enabled CONFIG_NOINSTR_VALIDATION; then |