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[1/4] pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process()

Message ID 20210125015435.45979-1-trondmy@kernel.org (mailing list archive)
State New
Headers show
Series [1/4] pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process() | expand

Commit Message

trondmy@kernel.org Jan. 25, 2021, 1:54 a.m. UTC 
From: Trond Myklebust <trond.myklebust@hammerspace.com>

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@hammerspace.com>
---
 fs/nfs/pnfs.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 4f274f21c4ab..e68e6f8cb407 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2417,6 +2417,7 @@  pnfs_layout_process(struct nfs4_layoutget *lgp)
 	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);
 }