Patch "ovl: update ctx->pos on impure dir iteration" has been added to the 4.14-stable tree

Patch "ovl: update ctx->pos on impure dir iteration" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ovl: update ctx->pos on impure dir iteration

to the 4.14-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:
     ovl-update-ctx-pos-on-impure-dir-iteration.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From b02a16e6413a2f782e542ef60bad9ff6bf212f8a Mon Sep 17 00:00:00 2001
From: Amir Goldstein <amir73il@gmail.com>
Date: Wed, 29 Nov 2017 07:35:21 +0200
Subject: ovl: update ctx->pos on impure dir iteration

From: Amir Goldstein <amir73il@gmail.com>

commit b02a16e6413a2f782e542ef60bad9ff6bf212f8a upstream.

This fixes a regression with readdir of impure dir in overlayfs
that is shared to VM via 9p fs.

Reported-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Fixes: 4edb83bb1041 ("ovl: constant d_ino for non-merge dirs")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Tested-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/overlayfs/readdir.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -645,7 +645,10 @@ static int ovl_iterate_real(struct file
 			return PTR_ERR(rdt.cache);
 	}
 
-	return iterate_dir(od->realfile, &rdt.ctx);
+	err = iterate_dir(od->realfile, &rdt.ctx);
+	ctx->pos = rdt.ctx.pos;
+
+	return err;
 }
 
 


Patches currently in stable-queue which might be from amir73il@gmail.com are

queue-4.14/ovl-pass-ovl_get_nlink-parameters-in-right-order.patch
queue-4.14/ovl-update-ctx-pos-on-impure-dir-iteration.patch