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android_kernel_samsung_msm8976/fs/xfs
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Mark Tinguely 0d267970ad xfs: fix directory hash ordering bug 
commit c88547a8119e3b581318ab65e9b72f27f23e641d upstream.

Commit f5ea1100 ("xfs: add CRCs to dir2/da node blocks") introduced
in 3.10 incorrectly converted the btree hash index array pointer in
xfs_da3_fixhashpath(). It resulted in the the current hash always
being compared against the first entry in the btree rather than the
current block index into the btree block's hash entry array. As a
result, it was comparing the wrong hashes, and so could misorder the
entries in the btree.

For most cases, this doesn't cause any problems as it requires hash
collisions to expose the ordering problem. However, when there are
hash collisions within a directory there is a very good probability
that the entries will be ordered incorrectly and that actually
matters when duplicate hashes are placed into or removed from the
btree block hash entry array.

This bug results in an on-disk directory corruption and that results
in directory verifier functions throwing corruption warnings into
the logs. While no data or directory entries are lost, access to
them may be compromised, and attempts to remove entries from a
directory that has suffered from this corruption may result in a
filesystem shutdown.  xfs_repair will fix the directory hash
ordering without data loss occuring.

[dchinner: wrote useful a commit message]

Reported-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-06 07:55:28 -07:00
..
Kconfig xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
kmem.c xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
kmem.h xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
Makefile xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
mrlock.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
time.h
uuid.c
uuid.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_acl.c xfs: increase number of ACL entries for V5 superblocks 2013-06-06 10:52:15 -05:00
xfs_acl.h xfs: increase number of ACL entries for V5 superblocks 2013-06-06 10:52:15 -05:00
xfs_ag.h xfs: add CRC checks to the AGI 2013-04-21 14:57:43 -05:00
xfs_alloc.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_alloc.h xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_alloc_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_alloc_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_aops.c xfs: fix sub-page blocksize data integrity writes 2013-05-24 16:26:51 -05:00
xfs_aops.h Prefix IO_XX flags with XFS_IO_XX to avoid namespace colision. 2012-07-22 11:00:55 -05:00
xfs_attr.c xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
xfs_attr.h xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
xfs_attr_leaf.c xfs: fix remote attribute invalidation for a leaf 2013-06-06 10:50:52 -05:00
xfs_attr_leaf.h xfs: fix implicit padding in directory and attr CRC formats 2013-06-14 15:59:16 -05:00
xfs_attr_remote.c xfs: rework remote attr CRCs 2013-05-30 17:26:31 -05:00
xfs_attr_remote.h xfs: rework remote attr CRCs 2013-05-30 17:26:31 -05:00
xfs_attr_sf.h
xfs_bit.c
xfs_bit.h
xfs_bmap.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_bmap.h xfs: move allocation stack switch up to xfs_bmapi_allocate 2012-10-18 17:42:48 -05:00
xfs_bmap_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_bmap_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_btree.c xfs: ensure btree root split sets blkno correctly 2013-06-14 15:59:31 -05:00
xfs_btree.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_buf.c xfs: rework remote attr CRCs 2013-05-30 17:26:31 -05:00
xfs_buf.h xfs: use b_maps[] for discontiguous buffers 2013-01-16 16:07:11 -06:00
xfs_buf_item.c xfs: fix split buffer vector log recovery support 2013-05-30 17:18:01 -05:00
xfs_buf_item.h xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_cksum.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs_da_btree.c xfs: fix directory hash ordering bug 2014-05-06 07:55:28 -07:00
xfs_da_btree.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_dfrag.c xfs: disable swap extents ioctl on CRC enabled filesystems 2013-05-30 17:20:08 -05:00
xfs_dfrag.h
xfs_dinode.h xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_dir2.c xfs: remove struct xfs_dabuf and infrastructure 2012-07-01 14:50:07 -05:00
xfs_dir2.h
xfs_dir2_block.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_dir2_data.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_dir2_format.h xfs: fix implicit padding in directory and attr CRC formats 2013-06-14 15:59:16 -05:00
xfs_dir2_leaf.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_dir2_node.c xfs: fix dir3 freespace block corruption 2013-05-30 17:22:54 -05:00
xfs_dir2_priv.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_dir2_sf.c xfs: shortform directory offsets change for dir3 format 2013-04-27 12:24:32 -05:00
xfs_discard.c xfs: check for possible overflow in xfs_ioc_trim 2012-08-23 14:48:44 -05:00
xfs_discard.h
xfs_dquot.c xfs: rework dquot CRCs 2013-06-06 10:50:35 -05:00
xfs_dquot.h xfs: xfs_dquot prealloc throttling watermarks and low free space 2013-03-22 16:06:30 -05:00
xfs_dquot_item.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_dquot_item.h
xfs_error.c xfs: increase hexdump output in xfs_corruption_error 2013-04-21 14:48:41 -05:00
xfs_error.h
xfs_export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
xfs_export.h
xfs_extent_busy.c xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extent_busy.h xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extfree_item.c xfs: Don't reference the EFI after it is freed 2013-05-24 16:27:57 -05:00
xfs_extfree_item.h xfs: don't free EFIs before the EFDs are committed 2013-04-05 13:25:35 -05:00
xfs_file.c aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
xfs_filestream.c
xfs_filestream.h
xfs_fs.h xfs: add fsgeom flag for v5 superblock support. 2013-05-30 17:19:45 -05:00
xfs_fsops.c xfs: growfs overruns AGFL buffer on V4 filesystems 2013-12-20 07:45:08 -08:00
xfs_fsops.h
xfs_globals.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_ialloc.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_ialloc.h xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_ialloc_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_ialloc_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_icache.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_icache.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_inode.c xfs: inode unlinked list needs to recalculate the inode CRC 2013-06-06 10:51:19 -05:00
xfs_inode.h xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_inode_item.c xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_inode_item.h xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_inum.h xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_ioctl.c xfs: underflow bug in xfs_attrlist_by_handle() 2013-12-20 07:45:08 -08:00
xfs_ioctl.h
xfs_ioctl32.c xfs: underflow bug in xfs_attrlist_by_handle() 2013-12-20 07:45:08 -08:00
xfs_ioctl32.h
xfs_iomap.c xfs: xfs_iomap_prealloc_size() tracepoint 2013-03-22 16:07:56 -05:00
xfs_iomap.h
xfs_iops.c xfs: kill suid/sgid through the truncate path. 2013-05-30 17:17:35 -05:00
xfs_iops.h
xfs_itable.c xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_itable.h
xfs_linux.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_log.c xfs: rename random32() to prandom_u32() 2013-03-07 12:33:57 -06:00
xfs_log.h xfs: xfs_quiesce_attr() should quiesce the log like unmount 2012-10-17 13:39:14 -05:00
xfs_log_cil.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_log_priv.h xfs: Remove the obsolete XLOG_CIL_HARD_SPACE_LIMIT() macros 2013-04-16 13:18:33 -05:00
xfs_log_recover.c xfs: don't shutdown log recovery on validation errors 2013-06-14 15:59:45 -05:00
xfs_log_recover.h
xfs_message.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_message.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_mount.c xfs: don't emit v5 superblock warnings on write 2013-06-14 15:58:47 -05:00
xfs_mount.h xfs: add CRC checks to the superblock 2013-04-27 13:03:12 -05:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_qm.c xfs: rework dquot CRCs 2013-06-06 10:50:35 -05:00
xfs_qm.h xfs: add CRC checks for quota blocks 2013-04-21 14:58:22 -05:00
xfs_qm_bhv.c xfs: Remove boolean_t typedef completely. 2013-01-17 17:32:57 -06:00
xfs_qm_syscalls.c xfs: avoid nesting transactions in xfs_qm_scall_setqlim() 2013-05-30 17:10:56 -05:00
xfs_quota.h xfs: rework dquot CRCs 2013-06-06 10:50:35 -05:00
xfs_quota_priv.h
xfs_quotaops.c userns: Convert qutoactl 2012-09-18 01:01:39 -07:00
xfs_rename.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_rtalloc.c xfs: uncached buffer reads need to return an error 2012-11-15 21:34:05 -06:00
xfs_rtalloc.h
xfs_sb.h xfs: implement extended feature masks 2013-04-27 13:05:18 -05:00
xfs_stats.c
xfs_stats.h
xfs_super.c xfs: disable noattr2/attr2 mount options for CRC enabled filesystems 2013-06-06 10:51:34 -05:00
xfs_super.h xfs: xfs_sync_data is redundant. 2012-10-17 12:01:25 -05:00
xfs_symlink.c xfs: fix incorrect remote symlink block count 2013-05-30 17:19:07 -05:00
xfs_symlink.h xfs: add CRC checks to remote symlinks 2013-04-27 11:49:28 -05:00
xfs_sysctl.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_sysctl.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_trace.c xfs: add CRCs to dir2/da node blocks 2013-04-27 12:33:38 -05:00
xfs_trace.h xfs: xfs_iomap_prealloc_size() tracepoint 2013-03-22 16:07:56 -05:00
xfs_trans.c xfs: refactor space log reservation for XFS_TRANS_ATTR_SET 2013-02-01 14:56:31 -06:00
xfs_trans.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_trans_ail.c xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_trans_buf.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_trans_dquot.c xfs: pass xfs_dquot to xfs_qm_adjust_dqlimits() instead of xfs_disk_dquot_t 2013-03-22 16:05:52 -05:00
xfs_trans_extfree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_trans_inode.c xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_trans_priv.h xfs: re-enable xfsaild idle mode and fix associated races 2012-07-29 16:27:57 -05:00
xfs_trans_space.h
xfs_types.h xfs: Remove boolean_t typedef completely. 2013-01-17 17:32:57 -06:00
xfs_utils.c xfs: remove the alloc_done argument to xfs_dialloc 2012-07-29 16:00:31 -05:00
xfs_utils.h
xfs_vnode.h
xfs_vnodeops.c xfs: fix rounding in xfs_free_file_space 2013-05-24 16:27:41 -05:00
xfs_vnodeops.h xfs: byte range granularity for XFS_IOC_ZERO_RANGE 2012-11-29 14:21:46 -06:00
xfs_xattr.c