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authorEric Sandeen <sandeen@sandeen.net>2017-05-22 19:54:10 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-07 12:01:53 +0200
commitc6444e022dc85f76a862d7384166ca9a53533e25 (patch)
parent0d600519110225537db4fe1be833cfc9970ff0f9 (diff)
xfs: fix unaligned access in xfs_btree_visit_blocks
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@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 8fe6a93ff473..c52e373ece56 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -4051,7 +4051,7 @@ 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 */