[PATCH] nfs: fix memory leak in error path of nfs4_do_reclaim

From: Li Lingfeng
Date: Wed Sep 04 2024 - 08:25:30 EST


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>
---
fs/nfs/nfs4state.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 877f682b45f2..30aba1dedaba 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1957,6 +1957,7 @@ static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recov
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;
}

--
2.31.1