Commit 9967683c authored by Marco Elver's avatar Marco Elver Committed by Paul E. McKenney
Browse files

objtool, kcsan: Add explicit check functions to uaccess whitelist 



Add explicitly invoked KCSAN check functions to objtool's uaccess
whitelist. This is needed in order 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: default avatarMarco Elver <elver@google.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 757a4cef

tools/objtool/check.c

+2 −0
Original line number Diff line number Diff line
@@ -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",