This is a note to let you know that I've just added the patch titled
hv: use correct order when freeing monitor_pages
to the 3.15-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:
hv-use-correct-order-when-freeing-monitor_pages.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a100d88df1e924e5c9678fabf054d1bae7ab74fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <rkrcmar@xxxxxxxxxx>
Date: Tue, 27 May 2014 19:16:20 +0200
Subject: hv: use correct order when freeing monitor_pages
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From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <rkrcmar@xxxxxxxxxx>
commit a100d88df1e924e5c9678fabf054d1bae7ab74fb upstream.
We try to free two pages when only one has been allocated.
Cleanup path is unlikely, so I haven't found any trace that would fit,
but I hope that free_pages_prepare() does catch it.
Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Reviewed-by: Amos Kong <akong@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hv/connection.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -224,8 +224,8 @@ cleanup:
vmbus_connection.int_page = NULL;
}
- free_pages((unsigned long)vmbus_connection.monitor_pages[0], 1);
- free_pages((unsigned long)vmbus_connection.monitor_pages[1], 1);
+ free_pages((unsigned long)vmbus_connection.monitor_pages[0], 0);
+ free_pages((unsigned long)vmbus_connection.monitor_pages[1], 0);
vmbus_connection.monitor_pages[0] = NULL;
vmbus_connection.monitor_pages[1] = NULL;
Patches currently in stable-queue which might be from rkrcmar@xxxxxxxxxx are
queue-3.15/hv-use-correct-order-when-freeing-monitor_pages.patch
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