This is a note to let you know that I've just added the patch titled
md: md.c: fix oops in mddev_suspend for raid0
to the 4.6-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:
md-md.c-fix-oops-in-mddev_suspend-for-raid0.patch
and it can be found in the queue-4.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 092398dce8c2406bfb0c9eebc3e764ff2ddb62a8 Mon Sep 17 00:00:00 2001
From: Heinz Mauelshagen <heinzm@xxxxxxxxxx>
Date: Tue, 3 May 2016 19:43:57 +0200
Subject: md: md.c: fix oops in mddev_suspend for raid0
From: Heinz Mauelshagen <heinzm@xxxxxxxxxx>
commit 092398dce8c2406bfb0c9eebc3e764ff2ddb62a8 upstream.
Introduced by upstream commit 70d9798b95562abac005d4ba71d28820f9a201eb
The raid0 personality does not create mddev->thread as oposed to
other personalities leading to its unconditional access in
mddev_suspend() causing an oops.
Patch checks for mddev->thread in order to keep the
intention of aforementioned commit.
Fixes: 70d9798b9556 ("MD: warn for potential deadlock")
Signed-off-by: Heinz Mauelshagen <heinzm@xxxxxxxxxx>
Signed-off-by: Shaohua Li <shli@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/md.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -307,7 +307,7 @@ static blk_qc_t md_make_request(struct r
*/
void mddev_suspend(struct mddev *mddev)
{
- WARN_ON_ONCE(current == mddev->thread->tsk);
+ WARN_ON_ONCE(mddev->thread && current == mddev->thread->tsk);
if (mddev->suspended++)
return;
synchronize_rcu();
Patches currently in stable-queue which might be from heinzm@xxxxxxxxxx are
queue-4.6/md-md.c-fix-oops-in-mddev_suspend-for-raid0.patch
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