From: Christoph Hellwig <hch@lst.de>
To: stable@vger.kernel.org
Cc: linux-xfs@vger.kernel.org, Eric Sandeen <sandeen@sandeen.net>,
Eric Sandeen <sandeen@redhat.com>,
"Darrick J . Wong" <darrick.wong@oracle.com>
Subject: [PATCH 22/25] xfs: fix unaligned access in xfs_btree_visit_blocks
Date: Sat, 3 Jun 2017 15:18:33 +0200 [thread overview]
Message-ID: <20170603131836.26661-23-hch@lst.de> (raw)
In-Reply-To: <20170603131836.26661-1-hch@lst.de>
From: Eric Sandeen <sandeen@sandeen.net>
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>
---
fs/xfs/libxfs/xfs_btree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 2849d3fa3d0b..91c68913d495 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -4376,7 +4376,7 @@ xfs_btree_visit_blocks(
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 */
--
2.11.0
next prev parent reply other threads:[~2017-06-03 13:19 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-03 13:18 4.9-stable updates for XFS Christoph Hellwig
2017-06-03 13:18 ` [PATCH 01/25] xfs: verify inline directory data forks Christoph Hellwig
2017-06-05 14:04 ` Greg KH
2017-06-05 14:04 ` Greg KH
2017-06-03 13:18 ` [PATCH 02/25] xfs: rework the inline directory verifiers Christoph Hellwig
2017-06-05 14:06 ` Greg KH
2017-06-05 14:37 ` Christoph Hellwig
2017-06-03 13:18 ` [PATCH 03/25] xfs: fix kernel memory exposure problems Christoph Hellwig
2017-06-03 13:18 ` [PATCH 04/25] xfs: use dedicated log worker wq to avoid deadlock with cil wq Christoph Hellwig
2017-06-03 13:18 ` [PATCH 05/25] xfs: fix over-copying of getbmap parameters from userspace Christoph Hellwig
2017-06-03 13:18 ` [PATCH 06/25] xfs: actually report xattr extents via iomap Christoph Hellwig
2017-06-03 13:18 ` [PATCH 07/25] xfs: drop iolock from reclaim context to appease lockdep Christoph Hellwig
2017-06-03 13:18 ` [PATCH 08/25] xfs: fix integer truncation in xfs_bmap_remap_alloc Christoph Hellwig
2017-06-03 13:18 ` [PATCH 09/25] xfs: handle array index overrun in xfs_dir2_leaf_readbuf() Christoph Hellwig
2017-06-03 13:18 ` [PATCH 10/25] xfs: prevent multi-fsb dir readahead from reading random blocks Christoph Hellwig
2017-06-03 13:18 ` [PATCH 11/25] xfs: fix up quotacheck buffer list error handling Christoph Hellwig
2017-06-03 13:18 ` [PATCH 12/25] xfs: support ability to wait on new inodes Christoph Hellwig
2017-06-03 13:18 ` [PATCH 13/25] xfs: update ag iterator to support " Christoph Hellwig
2017-06-03 13:18 ` [PATCH 14/25] xfs: wait on new inodes during quotaoff dquot release Christoph Hellwig
2017-06-03 13:18 ` [PATCH 15/25] xfs: reserve enough blocks to handle btree splits when remapping Christoph Hellwig
2017-06-03 13:18 ` [PATCH 16/25] xfs: fix use-after-free in xfs_finish_page_writeback Christoph Hellwig
2017-06-03 13:18 ` [PATCH 17/25] xfs: fix indlen accounting error on partial delalloc conversion Christoph Hellwig
2017-06-03 13:18 ` [PATCH 18/25] xfs: BMAPX shouldn't barf on inline-format directories Christoph Hellwig
2017-06-03 13:18 ` [PATCH 19/25] xfs: bad assertion for delalloc an extent that start at i_size Christoph Hellwig
2017-06-03 13:18 ` [PATCH 20/25] xfs: xfs_trans_alloc_empty Christoph Hellwig
2017-06-03 13:18 ` [PATCH 21/25] xfs: avoid mount-time deadlock in CoW extent recovery Christoph Hellwig
2017-06-03 13:18 ` Christoph Hellwig [this message]
2017-06-03 13:18 ` [PATCH 23/25] xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff() Christoph Hellwig
2017-06-03 13:18 ` [PATCH 24/25] xfs: Fix missed holes in SEEK_HOLE implementation Christoph Hellwig
2017-06-03 13:18 ` [PATCH 25/25] xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff() Christoph Hellwig
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