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linux/fs
Miklos Szeredi 8c25741aaa ovl: fix oopses in ovl_fill_super() failure paths
ovl_free_fs() dereferences ofs->workbasedir and ofs->upper_mnt in cases when
those might not have been initialized yet.

Fix the initialization order for these fields.

Reported-by: syzbot+c75f181dc8429d2eb887@syzkaller.appspotmail.com
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc:  <stable@vger.kernel.org> # v4.15
Fixes: 95e6d4177c ("ovl: grab reference to workbasedir early")
Fixes: a9075cdb46 ("ovl: factor out ovl_free_fs() helper")
2018-09-10 12:55:49 +02:00
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