[PATCH AUTOSEL 4.18 121/136] nfsd: fix corrupted reply to badly ordered compound

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From: "J. Bruce Fields" <bfields@xxxxxxxxxx>

[ Upstream commit 5b7b15aee641904ae269be9846610a3950cbd64c ]

We're encoding a single op in the reply but leaving the number of ops
zero, so the reply makes no sense.

Somewhat academic as this isn't a case any real client will hit, though
in theory perhaps that could change in a future protocol extension.

Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 fs/nfsd/nfs4proc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 5d99e8810b85..0dded931f119 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1726,6 +1726,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp)
 	if (status) {
 		op = &args->ops[0];
 		op->status = status;
+		resp->opcnt = 1;
 		goto encode_op;
 	}
 
-- 
2.17.1




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