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| author | Ulrich Drepper <drepper@redhat.com> | 2006-08-24 17:30:37 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2006-08-24 17:30:37 +0000 |
| commit | 7463d5cb4d42ffa944f05415f9d320b1b64d2bcf (patch) | |
| tree | 5965915308653b2ce43950fc61101339c8149c1b /malloc/malloc.c | |
| parent | 542a6f62afe483fe282adaf60f5c0a185c12e824 (diff) | |
| download | glibc-7463d5cb4d42ffa944f05415f9d320b1b64d2bcf.tar.gz | |
* malloc/malloc.c (sYSMALLOc): Avoid infinite loop if MMAP
keeps failing and heap growth or new heap creation isn't
successful either.
* malloc/tst-malloc.c (main): Add new tests.
Diffstat (limited to 'malloc/malloc.c')
| -rw-r--r-- | malloc/malloc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index 02f659708d..6de1409c4f 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -2860,6 +2860,7 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av; unsigned long sum; /* for updating stats */ size_t pagemask = mp_.pagesize - 1; + bool tried_mmap = false; #if HAVE_MMAP @@ -2883,6 +2884,7 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av; is no following chunk whose prev_size field could be used. */ size = (nb + SIZE_SZ + MALLOC_ALIGN_MASK + pagemask) & ~pagemask; + tried_mmap = true; /* Don't try if size wraps around 0 */ if ((unsigned long)(size) > (unsigned long)(nb)) { @@ -3006,7 +3008,7 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av; set_foot(old_top, (old_size + 2*SIZE_SZ)); } } - else + else if (!tried_mmap) /* We can at least try to use to mmap memory. */ goto try_mmap; |