We leak the memory allocated for the nbd_dev array at multiple places. Fix them
by either adding a kfree() or by rearranging code to return before we allocate
the memory.

Signed-off-by: Sven Wegener
---
drivers/block/nbd.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)

Only compile-tested.

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index ad98dda..1778e4a 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -707,15 +707,15 @@ static int __init nbd_init(void)

BUILD_BUG_ON(sizeof(struct nbd_request) != 28);

- nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
- if (!nbd_dev)
- return -ENOMEM;
-
if (max_part < 0) {
printk(KERN_CRIT "nbd: max_part must be >= 0\n");
return -EINVAL;
}

+ nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
+ if (!nbd_dev)
+ return -ENOMEM;
+
part_shift = 0;
if (max_part > 0)
part_shift = fls(max_part);
@@ -779,6 +779,7 @@ out:
blk_cleanup_queue(nbd_dev[i].disk->queue);
put_disk(nbd_dev[i].disk);
}
+ kfree(nbd_dev);
return err;
}

@@ -795,6 +796,7 @@ static void __exit nbd_cleanup(void)
}
}
unregister_blkdev(NBD_MAJOR, "nbd");
+ kfree(nbd_dev);
printk(KERN_INFO "nbd: unregistered device at major %d\n", NBD_MAJOR);
}

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