diff options
| author | Stefan Reinauer <stepan@coresystems.de> | 2008-08-14 14:40:10 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2008-08-14 14:40:10 +0000 |
| commit | ee673194b45efda3e21507d57ef11ba190e9a502 (patch) | |
| tree | f81e47224a9dec3a8bd72d36303d30bed73fd1b0 /payloads/libpayload/libc | |
| parent | 8e65adb67d9d85e920554af7b083b3d76b885688 (diff) | |
* fix memory allocator bug that lead to freelist corruption on the first malloc
(and spent 8 bytes too much per malloc)
* if the memory allocator detects freelist corruption, print a message
instead of silently dying.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3510 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'payloads/libpayload/libc')
| -rw-r--r-- | payloads/libpayload/libc/malloc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/payloads/libpayload/libc/malloc.c b/payloads/libpayload/libc/malloc.c index fe3d45bab8..3c6cf5d833 100644 --- a/payloads/libpayload/libc/malloc.c +++ b/payloads/libpayload/libc/malloc.c @@ -92,13 +92,15 @@ static void *alloc(int len) header = *((hdrtype_t *) ptr); int size = SIZE(header); - if (!HAS_MAGIC(header) || size == 0) + if (!HAS_MAGIC(header) || size == 0) { + printf("memory allocator panic.\n"); halt(); + } if (header & FLAG_FREE) { if (len <= size) { void *nptr = ptr + (HDRSIZE + len); - int nsize = size - (len + 8); + int nsize = size - (HDRSIZE + len); /* Mark the block as used. */ *((hdrtype_t *) ptr) = USED_BLOCK(len); @@ -109,7 +111,7 @@ static void *alloc(int len) if (nsize > 0) *((hdrtype_t *) nptr) = - FREE_BLOCK(nsize - 4); + FREE_BLOCK(nsize); return (void *)(ptr + HDRSIZE); } |