From: J. Bruce Fields <bfields@redhat.com>
Date: Mon, 10 Dec 2012 23:04:53 +0000 (-0500)
Subject: nfsd: warn on odd reply state in nfsd_vfs_read
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=79f77bf9a4e3dd5ead006b8f17e7c4ff07d8374e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

nfsd: warn on odd reply state in nfsd_vfs_read

As far as I can tell this shouldn't currently happen--or if it does,
something is wrong and data is going to be corrupted.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 0ef9b6b410a2..b31e46eeb026 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -936,6 +936,7 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
 			.u.data		= rqstp,
 		};
 
+		WARN_ON_ONCE(rqstp->rq_resused != 1);
 		rqstp->rq_resused = 1;
 		host_err = splice_direct_to_actor(file, &sd, nfsd_direct_splice_actor);
 	} else {