Messages in this thread Patch in this message | | | Date | Wed, 25 Mar 2020 17:41:57 +0100 | Subject | [PATCH 2/3] objtool, kcsan: Add explicit check functions to uaccess whitelist | From | Marco Elver <> |
| |
Add explicitly invoked KCSAN check functions to objtool uaccess whitelist. This is needed, to permit calling into kcsan_check_scoped_accesses() from the fast-path, which in turn calls __kcsan_check_access(). __kcsan_check_access() is the generic variant of the already whitelisted specializations __tsan_{read,write}N.
Signed-off-by: Marco Elver <elver@google.com> --- tools/objtool/check.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index b6da413bcbd6..b6a573d56f2e 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -468,8 +468,10 @@ static const char *uaccess_safe_builtin[] = { "__asan_report_store8_noabort", "__asan_report_store16_noabort", /* KCSAN */ + "__kcsan_check_access", "kcsan_found_watchpoint", "kcsan_setup_watchpoint", + "kcsan_check_scoped_accesses", /* KCSAN/TSAN */ "__tsan_func_entry", "__tsan_func_exit", -- 2.25.1.696.g5e7596f4ac-goog
| |