From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH 51/55] xfs: fix calculation of the number of node entries in a dir3 node
Date: Thu, 5 Sep 2013 08:05:55 +1000 [thread overview]
Message-ID: <1378332359-14737-52-git-send-email-david@fromorbit.com> (raw)
In-Reply-To: <1378332359-14737-1-git-send-email-david@fromorbit.com>
From: Dave Chinner <dchinner@redhat.com>
The calculation doesn't take into account the size of the dir v3
header, so overestimates the hash entries in a node. This causes
directory buffer overruns when splitting and merging nodes.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
include/xfs_da_btree.h | 11 +++++++++--
libxfs/xfs_dir2.c | 16 ++++++++++------
2 files changed, 19 insertions(+), 8 deletions(-)
diff --git a/include/xfs_da_btree.h b/include/xfs_da_btree.h
index 8cdc77b..b1f2679 100644
--- a/include/xfs_da_btree.h
+++ b/include/xfs_da_btree.h
@@ -133,12 +133,19 @@ extern void xfs_da3_node_hdr_to_disk(struct xfs_da_intnode *to,
struct xfs_da3_icnode_hdr *from);
static inline int
-xfs_da3_node_hdr_size(struct xfs_da_intnode *dap)
+__xfs_da3_node_hdr_size(bool v3)
{
- if (dap->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC))
+ if (v3)
return sizeof(struct xfs_da3_node_hdr);
return sizeof(struct xfs_da_node_hdr);
}
+static inline int
+xfs_da3_node_hdr_size(struct xfs_da_intnode *dap)
+{
+ bool v3 = dap->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC);
+
+ return __xfs_da3_node_hdr_size(v3);
+}
static inline struct xfs_da_node_entry *
xfs_da3_node_tree_p(struct xfs_da_intnode *dap)
diff --git a/libxfs/xfs_dir2.c b/libxfs/xfs_dir2.c
index 521042f..010c701 100644
--- a/libxfs/xfs_dir2.c
+++ b/libxfs/xfs_dir2.c
@@ -71,6 +71,9 @@ void
xfs_dir_mount(
xfs_mount_t *mp)
{
+ int nodehdr_size;
+
+
ASSERT(xfs_sb_version_hasdirv2(&mp->m_sb));
ASSERT((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) <=
XFS_MAX_BLOCKSIZE);
@@ -79,12 +82,13 @@ xfs_dir_mount(
mp->m_dirdatablk = xfs_dir2_db_to_da(mp, XFS_DIR2_DATA_FIRSTDB(mp));
mp->m_dirleafblk = xfs_dir2_db_to_da(mp, XFS_DIR2_LEAF_FIRSTDB(mp));
mp->m_dirfreeblk = xfs_dir2_db_to_da(mp, XFS_DIR2_FREE_FIRSTDB(mp));
- mp->m_attr_node_ents =
- (mp->m_sb.sb_blocksize - (uint)sizeof(xfs_da_node_hdr_t)) /
- (uint)sizeof(xfs_da_node_entry_t);
- mp->m_dir_node_ents =
- (mp->m_dirblksize - (uint)sizeof(xfs_da_node_hdr_t)) /
- (uint)sizeof(xfs_da_node_entry_t);
+
+ nodehdr_size = __xfs_da3_node_hdr_size(xfs_sb_version_hascrc(&mp->m_sb));
+ mp->m_attr_node_ents = (mp->m_sb.sb_blocksize - nodehdr_size) /
+ (uint)sizeof(xfs_da_node_entry_t);
+ mp->m_dir_node_ents = (mp->m_dirblksize - nodehdr_size) /
+ (uint)sizeof(xfs_da_node_entry_t);
+
mp->m_dir_magicpct = (mp->m_dirblksize * 37) / 100;
if (xfs_sb_version_hasasciici(&mp->m_sb))
mp->m_dirnameops = &xfs_ascii_ci_nameops;
--
1.8.3.2
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2013-09-04 22:21 UTC|newest]
Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-04 22:05 [PATCH 00/55] xfsprogs: bring code up to date with kernel Dave Chinner
2013-09-04 22:05 ` [PATCH 01/55] xfsprogs: introduce xfs_icreate.h Dave Chinner
2013-09-05 14:35 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 02/55] xfsprogs: port inode create transaction changes Dave Chinner
2013-09-05 15:25 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 03/55] xfsprogs: teach logprint about icreate transaction Dave Chinner
2013-09-05 15:29 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 04/55] libxfs: fix directory/attribute format issues Dave Chinner
2013-09-05 15:36 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 05/55] libxfs: ensure btree root split sets blkno correctly Dave Chinner
2013-09-05 15:37 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 06/55] libxfs: fix byte swapping on constants Dave Chinner
2013-09-05 15:41 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 07/55] libxfs: sync xfs_da_btree.c Dave Chinner
2013-09-05 15:46 ` Mark Tinguely
2013-09-05 15:52 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 08/55] libxfs: update xfs_alloc to current kernel version Dave Chinner
2013-09-05 15:53 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 09/55] libxfs: sync attr code with kernel Dave Chinner
2013-09-05 15:59 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 10/55] libxfs: sync dir2 kernel differences Dave Chinner
2013-09-05 16:32 ` Mark Tinguely
2013-09-17 15:14 ` Eric Sandeen
2013-09-18 3:36 ` Dave Chinner
2013-09-18 5:03 ` Dave Chinner
2013-09-04 22:05 ` [PATCH 11/55] libxfs: sync xfs_ialloc.c to the kernel code Dave Chinner
2013-09-05 18:46 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 12/55] xfsprogs: define min/max once and use them everywhere Dave Chinner
2013-09-05 18:47 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 13/55] libxfs: fix compile warnings Dave Chinner
2013-09-05 18:50 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 14/55] xfs: remove local fork format handling from xfs_bmapi_write() Dave Chinner
2013-09-05 18:55 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 15/55] libxfs: local to remote format support of remote symlinks Dave Chinner
2013-09-05 18:56 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 16/55] xfs: separate out log format definitions Dave Chinner
2013-09-05 19:01 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 17/55] xfs: split out inode log item format definition Dave Chinner
2013-09-05 19:14 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 18/55] xfs: split out buf log item format definitions Dave Chinner
2013-09-05 19:18 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 19/55] xfs: split out inode log item format definition Dave Chinner
2013-09-05 19:20 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 20/55] xfs: separate dquot on disk format definitions out of xfs_quota.h Dave Chinner
2013-09-05 19:33 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 21/55] xfs: separate icreate log format definitions from xfs_icreate_item.h Dave Chinner
2013-09-05 21:12 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 22/55] xfs: split out on-disk transaction definitions Dave Chinner
2013-09-05 21:21 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 23/55] xfs: introduce xfs_rtalloc_defs.h Dave Chinner
2013-09-05 21:26 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 24/55] xfs: introduce xfs_quota_defs.h Dave Chinner
2013-09-05 21:29 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 25/55] libxfs: introduce xfs_trans_resv.c Dave Chinner
2013-09-05 21:45 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 26/55] libxfs: move transaction code to trans.c Dave Chinner
2013-09-05 21:51 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 27/55] xfs: move inode fork definitions to a new header file Dave Chinner
2013-09-05 21:55 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 28/55] xfs: move unrealted definitions out of xfs_inode.h Dave Chinner
2013-09-05 22:05 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 29/55] xfs: introduce xfs_inode_buf.c for inode buffer operations Dave Chinner
2013-09-05 22:27 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 30/55] xfs: split out the remote symlink handling Dave Chinner
2013-09-06 15:13 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 31/55] libxfs: switch over to xfs_sb.c and remove xfs_mount.c Dave Chinner
2013-09-06 18:15 ` Mark Tinguely
2013-09-06 21:40 ` Dave Chinner
2013-09-06 21:43 ` Mark Tinguely
2013-09-10 1:02 ` [PATCH 31/55 V2] " Dave Chinner
2013-09-10 14:11 ` Mark Tinguely
2013-09-10 21:32 ` [PATCH 31/55 V3] " Dave Chinner
2013-09-11 13:25 ` Mark Tinguely
2013-09-11 14:24 ` Mark Tinguely
2013-09-13 14:17 ` Mark Tinguely
2013-09-15 3:27 ` Dave Chinner
2013-09-11 15:11 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 32/55] xfs: create xfs_bmap_util.[ch] Dave Chinner
2013-09-06 15:30 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 33/55] xfsprogs: sync minor kernel header differences Dave Chinner
2013-09-06 15:44 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 34/55] xfs: don't special case shared superblock mounts Dave Chinner
2013-09-06 15:48 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 35/55] xfs: move swap extent code to xfs_extent_ops Dave Chinner
2013-09-06 17:13 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 36/55] xfs: kill __KERNEL__ check for debug code in allocation code Dave Chinner
2013-09-06 17:20 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 37/55] xfs: remove __KERNEL__ from debug code Dave Chinner
2013-09-06 17:28 ` Mark Tinguely
2013-09-06 21:41 ` Dave Chinner
2013-09-06 21:42 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 38/55] xfs: remove __KERNEL__ check from xfs_dir2_leaf.c Dave Chinner
2013-09-06 17:29 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 39/55] xfs: move kernel specific type definitions to xfs.h Dave Chinner
2013-09-06 17:31 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 40/55] xfs: make struct xfs_perag kernel only Dave Chinner
2013-09-06 18:06 ` Mark Tinguely
2013-09-06 21:50 ` Dave Chinner
2013-09-04 22:05 ` [PATCH 41/55] xfs: Introduce a new structure to hold transaction reservation items Dave Chinner
2013-09-06 18:20 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 42/55] xfs: Introduce tr_fsyncts to m_reservation Dave Chinner
2013-09-06 18:20 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 43/55] xfs: Make writeid transaction use tr_writeid Dave Chinner
2013-09-06 18:21 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 44/55] xfs: refactor xfs_trans_reserve() interface Dave Chinner
2013-09-06 18:21 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 45/55] xfs: Get rid of all XFS_XXX_LOG_RES() macro Dave Chinner
2013-09-06 18:22 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 46/55] xfs: Add xfs_log_rlimit.c Dave Chinner
2013-09-06 18:22 ` Mark Tinguely
2013-10-06 17:56 ` Eric Sandeen
2013-10-07 1:46 ` Eric Sandeen
2013-10-07 13:48 ` Mark Tinguely
2014-02-21 19:47 ` Eric Sandeen
2014-02-21 20:40 ` Mark Tinguely
2014-02-21 20:56 ` Eric Sandeen
2014-02-21 21:46 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 47/55] xfs: Add read-only support for dirent filetype field Dave Chinner
2013-09-06 18:23 ` Mark Tinguely
2013-09-10 21:34 ` [PATCH 47/55 V2] " Dave Chinner
2013-09-04 22:05 ` [PATCH 48/55] xfs: Add write " Dave Chinner
2013-09-06 18:24 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 49/55] xfsprogs: add dtype support to mkfs and db Dave Chinner
2013-09-06 18:25 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 50/55] xfs: di_flushiter considered harmful Dave Chinner
2013-09-06 18:43 ` Mark Tinguely
2013-09-04 22:05 ` Dave Chinner [this message]
2013-09-06 18:53 ` [PATCH 51/55] xfs: fix calculation of the number of node entries in a dir3 node Mark Tinguely
2013-09-04 22:05 ` [PATCH 52/55] xfs: btree block LSN escaping to disk uninitialised Dave Chinner
2013-09-06 18:54 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 53/55] xfs: inode log reservations are too small Dave Chinner
2013-09-06 18:58 ` Mark Tinguely
2013-09-04 22:05 ` [PATCH 54/55] repair: fix segv on directory block read failure Dave Chinner
2013-09-04 23:33 ` Eric Sandeen
2013-09-04 22:05 ` [PATCH 55/55] xfsprogs: cleanup miscellaneous merge faults Dave Chinner
2013-09-06 19:03 ` Mark Tinguely
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1378332359-14737-52-git-send-email-david@fromorbit.com \
--to=david@fromorbit.com \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox