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| author |   Istvan Kurucsai <pistukem@gmail.com> | 2018-01-12 15:26:20 +0100 |
|---|---|---|
| committer |   Florian Weimer <fweimer@redhat.com> | 2018-01-12 15:26:20 +0100 |
| commit | 249a5895f120b13290a372a49bb4b499e749806f (patch) | |
| tree | 5112f07eaffc8203361ff59ab4bd941bd59aa91c /malloc | |
| parent | support: Preserve errno in write_message, TEST_VERIFY and other checks (diff) | |
| download | glibc-249a5895f120b13290a372a49bb4b499e749806f.tar.gz glibc-249a5895f120b13290a372a49bb4b499e749806f.tar.bz2 glibc-249a5895f120b13290a372a49bb4b499e749806f.zip | |
malloc: Ensure that the consolidated fast chunk has a sane size.
Diffstat (limited to 'malloc')
| -rw-r--r-- | malloc/malloc.c | 6 |
1 files changed, 6 insertions, 0 deletions
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; |