This is a note to let you know that I've just added the patch titled
nfsd: COPY and CLONE operations require the saved filehandle to be set
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfsd-copy-and-clone-operations-require-the-saved-filehandle-to-be-set.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 01310bb7c9c98752cc763b36532fab028e0f8f81 Mon Sep 17 00:00:00 2001
From: Scott Mayhew <smayhew@xxxxxxxxxx>
Date: Thu, 8 Nov 2018 11:11:36 -0500
Subject: nfsd: COPY and CLONE operations require the saved filehandle to be set
From: Scott Mayhew <smayhew@xxxxxxxxxx>
commit 01310bb7c9c98752cc763b36532fab028e0f8f81 upstream.
Make sure we have a saved filehandle, otherwise we'll oops with a null
pointer dereference in nfs4_preprocess_stateid_op().
Signed-off-by: Scott Mayhew <smayhew@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4proc.c | 3 +++
1 file changed, 3 insertions(+)
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1016,6 +1016,9 @@ nfsd4_verify_copy(struct svc_rqst *rqstp
{
__be32 status;
+ if (!cstate->save_fh.fh_dentry)
+ return nfserr_nofilehandle;
+
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh,
src_stateid, RD_STATE, src, NULL);
if (status) {
Patches currently in stable-queue which might be from smayhew@xxxxxxxxxx are
queue-4.9/nfsd-copy-and-clone-operations-require-the-saved-filehandle-to-be-set.patch
