Disable the efficient 8-byte reading under KMSAN to avoid false positives. Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx> To: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: linux-mm@xxxxxxxxx --- Change-Id: I25d1acf5c3df6eff85894cd94f5ddbe93308271c --- lib/string.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/string.c b/lib/string.c index 08ec58cc673b..15efdc51bda6 100644 --- a/lib/string.c +++ b/lib/string.c @@ -186,7 +186,10 @@ ssize_t strscpy(char *dest, const char *src, size_t count) if (count == 0 || WARN_ON_ONCE(count > INT_MAX)) return -E2BIG; -#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS +/** + * Disable the efficient 8-byte reading under KMSAN to avoid false positives. + */ +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && !defined(CONFIG_KMSAN) /* * If src is unaligned, don't cross a page boundary, * since we don't know if the next page is mapped. -- 2.24.0.rc0.303.g954a862665-goog
