From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 28 Oct 2016 08:53:20 +0000 (-0400)
Subject: 4.4-stable patches
X-Git-Tag: v4.4.29~27
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ce579b72745136054f9d2a6e7b8281a76569e1b0;p=thirdparty%2Fkernel%2Fstable-queue.git

4.4-stable patches

added patches:
	xenbus-don-t-look-up-transaction-ids-for-ordinary-writes.patch
---

diff --git a/queue-4.4/series b/queue-4.4/series
index 9e542a8ef9f..23d8a6d20c2 100644
--- a/queue-4.4/series
+++ b/queue-4.4/series
@@ -9,3 +9,4 @@ drm-radeon-narrow-asic_init-for-virtualization.patch
 drm-radeon-si-dpm-fix-phase-shedding-setup.patch
 drm-radeon-change-vblank_time-s-calculation-method-to-reduce-computational-error.patch
 drm-vmwgfx-limit-the-user-space-command-buffer-size.patch
+xenbus-don-t-look-up-transaction-ids-for-ordinary-writes.patch
diff --git a/queue-4.4/xenbus-don-t-look-up-transaction-ids-for-ordinary-writes.patch b/queue-4.4/xenbus-don-t-look-up-transaction-ids-for-ordinary-writes.patch
new file mode 100644
index 00000000000..36af26933b4
--- /dev/null
+++ b/queue-4.4/xenbus-don-t-look-up-transaction-ids-for-ordinary-writes.patch
@@ -0,0 +1,38 @@
+From 9a035a40f7f3f6708b79224b86c5777a3334f7ea Mon Sep 17 00:00:00 2001
+From: Jan Beulich <JBeulich@suse.com>
+Date: Mon, 15 Aug 2016 09:02:38 -0600
+Subject: xenbus: don't look up transaction IDs for ordinary writes
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Jan Beulich <JBeulich@suse.com>
+
+commit 9a035a40f7f3f6708b79224b86c5777a3334f7ea upstream.
+
+This should really only be done for XS_TRANSACTION_END messages, or
+else at least some of the xenstore-* tools don't work anymore.
+
+Fixes: 0beef634b8 ("xenbus: don't BUG() on user mode induced condition")
+Reported-by: Richard Schütz <rschuetz@uni-koblenz.de>
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Tested-by: Richard Schütz <rschuetz@uni-koblenz.de>
+Signed-off-by: David Vrabel <david.vrabel@citrix.com>
+Cc: "M. Vefa Bicakci" <m.v.b@runbox.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/xen/xenbus/xenbus_dev_frontend.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
++++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
+@@ -316,7 +316,7 @@ static int xenbus_write_transaction(unsi
+ 			rc = -ENOMEM;
+ 			goto out;
+ 		}
+-	} else {
++	} else if (msg_type == XS_TRANSACTION_END) {
+ 		list_for_each_entry(trans, &u->transactions, list)
+ 			if (trans->handle.id == u->u.msg.tx_id)
+ 				break;