Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH 3/4] objdump: add UACCESS exception for more stringops | Date | Wed, 8 Feb 2023 17:39:57 +0100 |
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From: Arnd Bergmann <arnd@arndb.de>
The memset/memmove/memcpy string functions are wrapped in different ways based on configuration. While the __asan_mem* functions already have exceptions, the ones called from those do not:
mm/kasan/shadow.o: warning: objtool: __asan_memset+0x30: call to __memset() with UACCESS enabled mm/kasan/shadow.o: warning: objtool: __asan_memmove+0x51: call to __memmove() with UACCESS enabled mm/kasan/shadow.o: warning: objtool: __asan_memcpy+0x51: call to __memcpy() with UACCESS enabled vmlinux.o: warning: objtool: .altinstr_replacement+0x1406: call to memcpy_erms() with UACCESS enabled vmlinux.o: warning: objtool: .altinstr_replacement+0xed0: call to memset_erms() with UACCESS enabled vmlinux.o: warning: objtool: memset+0x4: call to memset_orig() with UACCESS enabled vmlinux.o: warning: objtool: memset+0x4: call to memset_orig() with UACCESS enabled
Add these to the list as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- tools/objtool/check.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 0f67c6a8bc98..e8fb3bf7a2e3 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -1248,6 +1248,13 @@ static const char *uaccess_safe_builtin[] = { "clear_user_erms", "clear_user_rep_good", "clear_user_original", + "__memset", + "__memcpy", + "__memmove", + "memset_erms", + "memcpy_erms", + "memset_orig", + "memcpy_orig", NULL }; -- 2.39.1
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