From 249a5895f120b13290a372a49bb4b499e749806f Mon Sep 17 00:00:00 2001 From: Istvan Kurucsai Date: Fri, 12 Jan 2018 15:26:20 +0100 Subject: malloc: Ensure that the consolidated fast chunk has a sane size. --- malloc/malloc.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'malloc') diff --git a/malloc/malloc.c b/malloc/malloc.c index 48106f9bd4..f5aafd2c05 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -4431,6 +4431,12 @@ static void malloc_consolidate(mstate av) p = atomic_exchange_acq (fb, NULL); if (p != 0) { do { + { + unsigned int idx = fastbin_index (chunksize (p)); + if ((&fastbin (av, idx)) != fb) + malloc_printerr ("malloc_consolidate(): invalid chunk size"); + } + check_inuse_chunk(av, p); nextp = p->fd; -- cgit v1.2.1