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| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2008-07-19 01:01:22 +0900 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 10:00:11 -0400 |
| commit | f636ffb420f0f9059c1d0b841afd691657246ad6 (patch) | |
| tree | f1aaf8fedaf98f6143ea1a560c24430a14ac8def /drivers | |
| parent | 6910c1368104d50e6b6afc6c8b7e9d1670a374e7 (diff) | |
| download | linux-f636ffb420f0f9059c1d0b841afd691657246ad6.tar.gz linux-f636ffb420f0f9059c1d0b841afd691657246ad6.tar.bz2 linux-f636ffb420f0f9059c1d0b841afd691657246ad6.zip | |
[MTD][MTDPART] Fix a division by zero bug
When detecting a partition beyond the end of the device, skip most of
the initialisation, in particular those bits causing a division by zero.
Signed-off-by: Jörn Engel <joern@logfs.org>
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/mtdpart.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 5aac59c21ead..edb90b58a9b1 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -411,11 +411,12 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, /* let's do some sanity checks */ if (slave->offset >= master->size) { - /* let's register it anyway to preserve ordering */ + /* let's register it anyway to preserve ordering */ slave->offset = 0; slave->mtd.size = 0; printk(KERN_ERR"mtd: partition \"%s\" is out of reach -- disabled\n", part->name); + goto out_register; } if (slave->offset + slave->mtd.size > master->size) { slave->mtd.size = master->size - slave->offset; @@ -475,6 +476,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, } } +out_register: if (part->mtdp) { /* store the object pointer (caller may or may not register it*/ *part->mtdp = &slave->mtd; |