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Date: Tue, 2 Feb 2021 14:37:39 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Trond Myklebust <trond.myklebust@...merspace.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 096/142] pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process()
From: Trond Myklebust <trond.myklebust@...merspace.com>
[ Upstream commit 814b84971388cd5fb182f2e914265b3827758455 ]
If the server returns a new stateid that does not match the one in our
cache, then pnfs_layout_process() will leak the layout segments returned
by pnfs_mark_layout_stateid_invalid().
Fixes: 9888d837f3cf ("pNFS: Force a retry of LAYOUTGET if the stateid doesn't match our cache")
Signed-off-by: Trond Myklebust <trond.myklebust@...merspace.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
fs/nfs/pnfs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 471bfa273dade..426877f72441e 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2418,6 +2418,7 @@ out_forget:
spin_unlock(&ino->i_lock);
lseg->pls_layout = lo;
NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg);
+ pnfs_free_lseg_list(&free_me);
return ERR_PTR(-EAGAIN);
}
--
2.27.0
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