md: fix double free of io_acct_set bioset

commit 42b805af102471f53e3c7867b8c2b502ea4eef7e upstream.

Now io_acct_set is alloc and free in personality. Remove the codes that
free io_acct_set in md_free and md_stop.

Fixes: 0c031fd37f69 (md: Move alloc/free acct bioset in to personality)
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/md/md.c b/drivers/md/md.c
index d890330922b89b3620aa982de27c20a0b71b16fb..b553654cbebc972b5ab658426f7541859385b457 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5588,8 +5588,6 @@ static void md_free(struct kobject *ko)
 
        bioset_exit(&mddev->bio_set);
        bioset_exit(&mddev->sync_set);
-       if (mddev->level != 1 && mddev->level != 10)
-               bioset_exit(&mddev->io_acct_set);
        kfree(mddev);
 }
 
@@ -6277,8 +6275,6 @@ void md_stop(struct mddev *mddev)
        __md_stop(mddev);
        bioset_exit(&mddev->bio_set);
        bioset_exit(&mddev->sync_set);
-       if (mddev->level != 1 && mddev->level != 10)
-               bioset_exit(&mddev->io_acct_set);
 }
 
 EXPORT_SYMBOL_GPL(md_stop);