This is a note to let you know that I've just added the patch titled
xfs: fix unaligned access in xfs_btree_visit_blocks
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:
xfs-fix-unaligned-access-in-xfs_btree_visit_blocks.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@xxxxxxxxxxxxxxx> know about it.
>From a4d768e702de224cc85e0c8eac9311763403b368 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 22 May 2017 19:54:10 -0700
Subject: xfs: fix unaligned access in xfs_btree_visit_blocks
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
commit a4d768e702de224cc85e0c8eac9311763403b368 upstream.
This structure copy was throwing unaligned access warnings on sparc64:
Kernel unaligned access at TPC[1043c088] xfs_btree_visit_blocks+0x88/0xe0 [xfs]
xfs_btree_copy_ptrs does a memcpy, which avoids it.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/libxfs/xfs_btree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -4064,7 +4064,7 @@ xfs_btree_change_owner(
xfs_btree_readahead_ptr(cur, ptr, 1);
/* save for the next iteration of the loop */
- lptr = *ptr;
+ xfs_btree_copy_ptrs(cur, &lptr, ptr, 1);
}
/* for each buffer in the level */
Patches currently in stable-queue which might be from sandeen@xxxxxxxxxxx are
queue-4.4/xfs-fix-unaligned-access-in-xfs_btree_visit_blocks.patch