| Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 1 | From ab18f04cf89ef4e8521c81c50477e1363b2d333b Mon Sep 17 00:00:00 2001 |
| 2 | From: Khem Raj <raj.khem@gmail.com> |
| 3 | Date: Sat, 28 Apr 2018 09:46:12 -0700 |
| 4 | Subject: [PATCH] use memmove instead of memcpy on overlapping region |
| 5 | |
| 6 | Fixes |
| 7 | super0.c:526:3: error: 'memcpy' accessing 3936 bytes at offsets 156 and 160 overlaps 3932 bytes at offset 160 [-Werror=restrict] |
| 8 | |
| 9 | Upstream-Status: Pending |
| 10 | |
| 11 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| 12 | --- |
| 13 | super0.c | 2 +- |
| 14 | 1 file changed, 1 insertion(+), 1 deletion(-) |
| 15 | |
| 16 | diff --git a/super0.c b/super0.c |
| 17 | index f5b4507..264b598 100644 |
| 18 | --- a/super0.c |
| 19 | +++ b/super0.c |
| 20 | @@ -523,7 +523,7 @@ static int update_super0(struct supertype *st, struct mdinfo *info, |
| 21 | * up 4 bytes before continuing |
| 22 | */ |
| 23 | __u32 *sb32 = (__u32*)sb; |
| 24 | - memcpy(sb32+MD_SB_GENERIC_CONSTANT_WORDS+7, |
| 25 | + memmove(sb32+MD_SB_GENERIC_CONSTANT_WORDS+7, |
| 26 | sb32+MD_SB_GENERIC_CONSTANT_WORDS+7+1, |
| 27 | (MD_SB_WORDS - (MD_SB_GENERIC_CONSTANT_WORDS+7+1))*4); |
| 28 | if (verbose >= 0) |
| 29 | -- |
| 30 | 2.17.0 |
| 31 | |