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| author |   Josh Poimboeuf <jpoimboe@redhat.com> | 2020-04-29 14:09:04 -0500 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@redhat.com> | 2020-05-20 08:30:43 -0500 |
| commit | ae033f088f277efd5b3c6d681ce9e7682380efff (patch) | |
| tree | 8de9341cdd012f0ac9117dcdd39b16900a02cb9e /tools | |
| parent | samples/ftrace: Fix asm function ELF annotations (diff) | |
| download | linux-dev-ae033f088f277efd5b3c6d681ce9e7682380efff.tar.xz linux-dev-ae033f088f277efd5b3c6d681ce9e7682380efff.zip | |
objtool: Add check_kcov_mode() to the uaccess safelist
check_kcov_mode() is called by write_comp_data() and
__sanitizer_cov_trace_pc(), which are already on the uaccess safe list.
It's notrace and doesn't call out to anything else, so add it to the
list too.
This fixes the following warnings:
kernel/kcov.o: warning: objtool: __sanitizer_cov_trace_pc()+0x15: call to check_kcov_mode() with UACCESS enabled
kernel/kcov.o: warning: objtool: write_comp_data()+0x1b: call to check_kcov_mode() with UACCESS enabled
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/objtool/check.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index e36a818a2fed..7a47ff9d39f7 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -507,6 +507,7 @@ static const char *uaccess_safe_builtin[] = { "__asan_report_store16_noabort", /* KCOV */ "write_comp_data", + "check_kcov_mode", "__sanitizer_cov_trace_pc", "__sanitizer_cov_trace_const_cmp1", "__sanitizer_cov_trace_const_cmp2", |