This is a note to let you know that I've just added the patch titled
md/bitmap: don't pass -1 to bitmap_storage_alloc.
to the 4.1-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-bitmap-don-t-pass-1-to-bitmap_storage_alloc.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From da6fb7a9e5bd6f04f7e15070f630bdf1ea502841 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@xxxxxxxx>
Date: Thu, 1 Oct 2015 16:03:38 +1000
Subject: md/bitmap: don't pass -1 to bitmap_storage_alloc.
From: NeilBrown <neilb@xxxxxxxx>
commit da6fb7a9e5bd6f04f7e15070f630bdf1ea502841 upstream.
Passing -1 to bitmap_storage_alloc() causes page->index to be set to
-1, which is quite problematic.
So only pass ->cluster_slot if mddev_is_clustered().
Fixes: b97e92574c0b ("Use separate bitmaps for each nodes in the cluster")
Signed-off-by: NeilBrown <neilb@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bitmap.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -2000,7 +2000,8 @@ int bitmap_resize(struct bitmap *bitmap,
if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file)
ret = bitmap_storage_alloc(&store, chunks,
!bitmap->mddev->bitmap_info.external,
- bitmap->cluster_slot);
+ mddev_is_clustered(bitmap->mddev)
+ ? bitmap->cluster_slot : 0);
if (ret)
goto err;
Patches currently in stable-queue which might be from neilb@xxxxxxxx are
queue-4.1/md-bitmap-don-t-pass-1-to-bitmap_storage_alloc.patch
queue-4.1/md-raid0-update-queue-parameter-in-a-safer-location.patch
queue-4.1/md-raid0-apply-base-queue-limits-before-disk_stack_limits.patch
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