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Add some more tests to malloc to detect corruptions.
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@ -1,5 +1,8 @@
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2009-06-18 Ulrich Drepper <drepper@redhat.com>
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* malloc/malloc.c (_int_malloc): Add some consistency checks.
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(_int_free): Likewise.
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* sysdeps/unix/sysv/linux/bits/socket.h: Define PF_IEEE802154 and
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AF_IEEE802154.
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* sysdeps/unix/sysv/linux/sparc/bits/socket.h: Likewise.
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@ -83,7 +86,7 @@
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Patch by Arnaud Ebalard <arno@natisbad.org>.
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[BZ #10207]
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* nss/getent.c: Add support for print gshadow data.
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* nss/getent.c: Add support for printing gshadow data.
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[BZ #10203]
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* nis/nss_nis/nis-pwd.c (internal_nis_endpwent): Free all buffers,
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@ -4241,6 +4241,8 @@ _int_malloc(mstate av, size_t bytes)
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mchunkptr fwd; /* misc temp for linking */
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mchunkptr bck; /* misc temp for linking */
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const char *errstr = NULL;
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/*
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Convert request size to internal form by adding SIZE_SZ bytes
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overhead plus possibly more to obtain necessary alignment and/or
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@ -4276,8 +4278,11 @@ _int_malloc(mstate av, size_t bytes)
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#endif
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if (victim != 0) {
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if (__builtin_expect (fastbin_index (chunksize (victim)) != idx, 0))
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malloc_printerr (check_action, "malloc(): memory corruption (fast)",
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chunk2mem (victim));
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{
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errstr = "malloc(): memory corruption (fast)";
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errout:
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malloc_printerr (check_action, errstr, chunk2mem (victim));
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}
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#ifndef ATOMIC_FASTBINS
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*fb = victim->fd;
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#endif
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@ -4306,6 +4311,11 @@ _int_malloc(mstate av, size_t bytes)
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malloc_consolidate(av);
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else {
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bck = victim->bk;
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if (__builtin_expect (bck->fd != victim, 0))
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{
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errstr = "malloc(): smallbin double linked list corrupted";
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goto errout;
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}
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set_inuse_bit_at_offset(victim, nb);
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bin->bk = bck;
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bck->fd = bin;
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@ -4515,6 +4525,11 @@ _int_malloc(mstate av, size_t bytes)
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have to perform a complete insert here. */
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bck = unsorted_chunks(av);
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fwd = bck->fd;
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if (__builtin_expect (fwd->bk != bck, 0))
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{
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errstr = "malloc(): corrupted unsorted chunks";
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goto errout;
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}
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remainder->bk = bck;
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remainder->fd = fwd;
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bck->fd = remainder;
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@ -4610,6 +4625,11 @@ _int_malloc(mstate av, size_t bytes)
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have to perform a complete insert here. */
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bck = unsorted_chunks(av);
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fwd = bck->fd;
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if (__builtin_expect (fwd->bk != bck, 0))
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{
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errstr = "malloc(): corrupted unsorted chunks 2";
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goto errout;
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}
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remainder->bk = bck;
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remainder->fd = fwd;
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bck->fd = remainder;
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@ -4901,6 +4921,11 @@ _int_free(mstate av, mchunkptr p)
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bck = unsorted_chunks(av);
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fwd = bck->fd;
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if (__builtin_expect (fwd->bk != bck, 0))
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{
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errstr = "free(): corrupted unsorted chunks";
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goto errout;
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}
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p->fd = fwd;
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p->bk = bck;
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if (!in_smallbin_range(size))
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