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Btrfs: fix use after free in btrfs_start_workers fail path
author
Jiri Slaby
<jirislaby@gmail.com>
Thu, 2 Jul 2009 17:50:58 +0000
(13:50 -0400)
committer
Chris Mason
<chris.mason@oracle.com>
Thu, 2 Jul 2009 17:50:58 +0000
(13:50 -0400)
worker memory is already freed on one fail path in btrfs_start_workers,
but is still dereferenced. Switch the dereference and kfree.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/async-thread.c
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diff --git
a/fs/btrfs/async-thread.c
b/fs/btrfs/async-thread.c
index
7f88628
..
6e4f6c5
100644
(file)
--- a/
fs/btrfs/async-thread.c
+++ b/
fs/btrfs/async-thread.c
@@
-299,8
+299,8
@@
int btrfs_start_workers(struct btrfs_workers *workers, int num_workers)
"btrfs-%s-%d", workers->name,
workers->num_workers + i);
if (IS_ERR(worker->task)) {
- kfree(worker);
ret = PTR_ERR(worker->task);
+ kfree(worker);
goto fail;
}