exfat: move freeing sbi, upcase table and dropping nls into rcu-delayed helper
That stuff can be accessed by ->d_hash()/->d_compare(); as it is, we have a hard-to-hit UAF if rcu pathwalk manages to get into ->d_hash() on a filesystem that is in process of getting shut down. Besides, having nls and upcase table cleanup moved from ->put_super() towards the place where sbi is freed makes for simpler failure exits. Acked-by:Christian Brauner <brauner@kernel.org> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
parent
529f89a9
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