From 82355e2882339067e1d6deaec68e629f63259c0d Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 17 May 2021 16:10:06 -0400 Subject: [PATCH] bcachefs: Fix a memcpy call Not supposed to pass a null ptr to memcpy (even if the size is 0). Signed-off-by: Kent Overstreet --- fs/bcachefs/fsck.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/bcachefs/fsck.c b/fs/bcachefs/fsck.c index fcdcf42f85a4..a40459d2b0f0 100644 --- a/fs/bcachefs/fsck.c +++ b/fs/bcachefs/fsck.c @@ -1161,7 +1161,8 @@ static int add_nlink(struct nlink_table *t, u64 inum, u32 snapshot) return -ENOMEM; } - memcpy(d, t->d, t->size * sizeof(t->d[0])); + if (t->d) + memcpy(d, t->d, t->size * sizeof(t->d[0])); kvfree(t->d); t->d = d;