Patch "Tools: hv: kvp: ensure kvp device fd is closed on exec" has been added to the 4.4-stable tree

Patch "Tools: hv: kvp: ensure kvp device fd is closed on exec" has been added to the 4.4-stable tree

[gregkh]

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

    Tools: hv: kvp: ensure kvp device fd is closed on exec

to the 4.4-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:
     tools-hv-kvp-ensure-kvp-device-fd-is-closed-on-exec.patch
and it can be found in the queue-4.4 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 26840437cbd6d3625ea6ab34e17cd34bb810c861 Mon Sep 17 00:00:00 2001
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Wed, 6 Jul 2016 18:24:10 -0700
Subject: Tools: hv: kvp: ensure kvp device fd is closed on exec

From: Vitaly Kuznetsov <vkuznets@redhat.com>

commit 26840437cbd6d3625ea6ab34e17cd34bb810c861 upstream.

KVP daemon does fork()/exec() (with popen()) so we need to close our fds
to avoid sharing them with child processes. The immediate implication of
not doing so I see is SELinux complaining about 'ip' trying to access
'/dev/vmbus/hv_kvp'.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/hv/hv_kvp_daemon.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -1433,7 +1433,7 @@ int main(int argc, char *argv[])
 	openlog("KVP", 0, LOG_USER);
 	syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
 
-	kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR);
+	kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC);
 
 	if (kvp_fd < 0) {
 		syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s",


Patches currently in stable-queue which might be from vkuznets@redhat.com are

queue-4.4/drivers-hv-balloon-keep-track-of-where-ha_region-starts.patch
queue-4.4/drivers-hv-get-rid-of-timeout-in-vmbus_open.patch
queue-4.4/hv-don-t-reset-hv_context.tsc_page-on-crash.patch
queue-4.4/drivers-hv-don-t-leak-memory-in-vmbus_establish_gpadl.patch
queue-4.4/tools-hv-kvp-ensure-kvp-device-fd-is-closed-on-exec.patch
queue-4.4/drivers-hv-balloon-account-for-gaps-in-hot-add-regions.patch