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| author | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:15 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:59 +0200 |
| commit | 07f9479a40cc778bc1462ada11f95b01360ae4ff (patch) | |
| tree | 0676cf38df3844004bb3ebfd99dfa67a4a8998f5 /fs/partitions/ldm.c | |
| parent | 9d5e6bdb3013acfb311ab407eeca0b6a6a3dedbf (diff) | |
| parent | cd2e49e90f1cae7726c9a2c54488d881d7f1cd1c (diff) | |
| download | linux-07f9479a40cc778bc1462ada11f95b01360ae4ff.tar.bz2 | |
Merge branch 'master' into for-next
Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.
Diffstat (limited to 'fs/partitions/ldm.c')
| -rw-r--r-- | fs/partitions/ldm.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/partitions/ldm.c b/fs/partitions/ldm.c index ea648b913beb..410df07ae96d 100644 --- a/fs/partitions/ldm.c +++ b/fs/partitions/ldm.c @@ -1299,6 +1299,11 @@ static bool ldm_frag_add (const u8 *data, int size, struct list_head *frags) BUG_ON (!data || !frags); + if (size < 2 * VBLK_SIZE_HEAD) { + ldm_error("Value of size is to small."); + return false; + } + group = get_unaligned_be32(data + 0x08); rec = get_unaligned_be16(data + 0x0C); num = get_unaligned_be16(data + 0x0E); @@ -1306,6 +1311,10 @@ static bool ldm_frag_add (const u8 *data, int size, struct list_head *frags) ldm_error ("A VBLK claims to have %d parts.", num); return false; } + if (rec >= num) { + ldm_error("REC value (%d) exceeds NUM value (%d)", rec, num); + return false; + } list_for_each (item, frags) { f = list_entry (item, struct frag, list); @@ -1334,10 +1343,9 @@ found: f->map |= (1 << rec); - if (num > 0) { - data += VBLK_SIZE_HEAD; - size -= VBLK_SIZE_HEAD; - } + data += VBLK_SIZE_HEAD; + size -= VBLK_SIZE_HEAD; + memcpy (f->data+rec*(size-VBLK_SIZE_HEAD)+VBLK_SIZE_HEAD, data, size); return true; |