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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-06-04 17:48:12 +0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-07-24 14:32:54 +0400
commitabc5e92262d87f9c5c628492bffc55f81c7dcb80 (patch)
treead33229247f99996dd875e68c10dcef9d1d40519 /drivers/mtd/ubi/vmt.c
parentcadb40ccc16a26a738f1cbc963e35b21edd93e79 (diff)
downloadlinux-abc5e92262d87f9c5c628492bffc55f81c7dcb80.tar.xz
UBI: fix memory leak
ubi_free_volume() function sets ubi->volumes[] to NULL, so ubi_eba_close() is useless, it does not free what has to be freed. So zap it and free vol->eba_tbl at the volume release function. Pointed-out-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/vmt.c')
-rw-r--r--drivers/mtd/ubi/vmt.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 7402025ded94..367b04176e0a 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -127,6 +127,7 @@ static void vol_release(struct device *dev)
{
struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
+ kfree(vol->eba_tbl);
kfree(vol);
}
@@ -201,7 +202,7 @@ static void volume_sysfs_close(struct ubi_volume *vol)
*/
int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
{
- int i, err, vol_id = req->vol_id, dont_free = 0;
+ int i, err, vol_id = req->vol_id, do_free = 1;
struct ubi_volume *vol;
struct ubi_vtbl_record vtbl_rec;
uint64_t bytes;
@@ -365,14 +366,14 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
out_sysfs:
/*
- * We have registered our device, we should not free the volume*
+ * We have registered our device, we should not free the volume
* description object in this function in case of an error - it is
* freed by the release function.
*
* Get device reference to prevent the release function from being
* called just after sysfs has been closed.
*/
- dont_free = 1;
+ do_free = 0;
get_device(&vol->dev);
volume_sysfs_close(vol);
out_gluebi:
@@ -382,17 +383,18 @@ out_gluebi:
out_cdev:
cdev_del(&vol->cdev);
out_mapping:
- kfree(vol->eba_tbl);
+ if (do_free)
+ kfree(vol->eba_tbl);
out_acc:
spin_lock(&ubi->volumes_lock);
ubi->rsvd_pebs -= vol->reserved_pebs;
ubi->avail_pebs += vol->reserved_pebs;
out_unlock:
spin_unlock(&ubi->volumes_lock);
- if (dont_free)
- put_device(&vol->dev);
- else
+ if (do_free)
kfree(vol);
+ else
+ put_device(&vol->dev);
ubi_err("cannot create volume %d, error %d", vol_id, err);
return err;
}
@@ -445,8 +447,6 @@ int ubi_remove_volume(struct ubi_volume_desc *desc)
goto out_err;
}
- kfree(vol->eba_tbl);
- vol->eba_tbl = NULL;
cdev_del(&vol->cdev);
volume_sysfs_close(vol);