objtool: mem*() are not uaccess safe

For mysterious raisins I listed the new __asan_mem*() functions as
being uaccess safe, this is giving objtool fails on KASAN builds
because these functions call out to the actual __mem*() functions
which are not marked uaccess safe.

Removing it doesn't make the robots unhappy.

Fixes: 69d4c0d32186 ("entry, kasan, x86: Disallow overriding mem*() functions")
Reported-by: "Paul E. McKenney" <paulmck@kernel.org>
Bisected-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230126182302.GA687063@paulmck-ThinkPad-P17-Gen-1

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 10b5bb4..b118f58 100644 (file)
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1083,9 +1083,6 @@ static const char *uaccess_safe_builtin[] = {
        "__asan_store16_noabort",
        "__kasan_check_read",
        "__kasan_check_write",
-       "__asan_memset",
-       "__asan_memmove",
-       "__asan_memcpy",
        /* KASAN in-line */
        "__asan_report_load_n_noabort",
        "__asan_report_load1_noabort",