[PATCH 5.15 347/691] nfs: fix memory leak in error path of nfs4_do_reclaim

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Li Lingfeng <lilingfeng3@xxxxxxxxxx>

commit 8f6a7c9467eaf39da4c14e5474e46190ab3fb529 upstream.

Commit c77e22834ae9 ("NFSv4: Fix a potential sleep while atomic in
nfs4_do_reclaim()") separate out the freeing of the state owners from
nfs4_purge_state_owners() and finish it outside the rcu lock.
However, the error path is omitted. As a result, the state owners in
"freeme" will not be released.
Fix it by adding freeing in the error path.

Fixes: c77e22834ae9 ("NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim()")
Signed-off-by: Li Lingfeng <lilingfeng3@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v5.3+
Signed-off-by: Anna Schumaker <anna.schumaker@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/nfs/nfs4state.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1949,6 +1949,7 @@ restart:
 				set_bit(ops->owner_flag_bit, &sp->so_flags);
 				nfs4_put_state_owner(sp);
 				status = nfs4_recovery_handle_error(clp, status);
+				nfs4_free_state_owners(&freeme);
 				return (status != 0) ? status : -EAGAIN;
 			}
 






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