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linux-stable/fs/xfs
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Bill O'Donnell b20fe4730e xfs: correct null checks and error processing in xfs_initialize_perag 
If pag cannot be allocated, the current error exit path will trip
a null pointer deference error when calling xfs_buf_hash_destroy
with a null pag.  Fix this by adding a new error exit labels and
jumping to those accordingly, avoiding the hash destroy and
unnecessary kmem_free on pag.

Up to three things need to be properly unwound:

1) pag memory allocation
2) xfs_buf_hash_init
3) radix_tree_insert

For any given iteration through the loop, any of the above which
succeed must be unwound for /this/ pag, and then all prior
initialized pags must be unwound.

Addresses-Coverity-Id: 1397628 ("Dereference after null check")

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-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>
2017-02-09 10:50:25 -08:00
..
libxfs
xfs: go straight to real allocations for direct I/O COW writes
2017-02-06 17:47:47 -08:00
Kconfig
xfs: implement iomap based buffered write path
2016-06-21 09:53:44 +10:00
kmem.c
xfs: improve kmem_realloc
2016-04-06 09:47:01 +10:00
kmem.h
xfs: improve kmem_realloc
2016-04-06 09:47:01 +10:00
Makefile
xfs: introduce the CoW fork
2016-10-04 18:06:40 -07:00
mrlock.h
xfs: introduce CONFIG_XFS_WARN
2013-05-07 18:45:36 -05:00
uuid.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
uuid.h
xfs: add CRC infrastructure
2012-11-19 20:11:24 -06:00
xfs_acl.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
xfs_acl.h
xfs: Change how listxattr generates synthetic attributes
2015-12-06 21:34:16 -05:00
xfs_aops.c
xfs: mark speculative prealloc CoW fork extents unwritten
2017-02-02 15:14:02 -08:00
xfs_aops.h
xfs: use iomap_dio_rw
2016-11-30 14:37:15 +11:00
xfs_attr_inactive.c
xfs: make several functions static
2016-06-01 17:38:15 +10:00
xfs_attr_list.c
xfs: several xattr functions can be void
2016-12-05 12:32:14 +11:00
xfs_attr.h
xfs: several xattr functions can be void
2016-12-05 12:32:14 +11:00
xfs_bmap_item.c
xfs: when replaying bmap operations, don't let unlinked inodes get reaped
2016-10-04 11:05:44 -07:00
xfs_bmap_item.h
xfs: log bmap intent items
2016-10-04 11:05:44 -07:00
xfs_bmap_util.c
xfs: remove unused full argument from bmap
2017-01-30 16:32:25 -08:00
xfs_bmap_util.h
xfs: remove unused full argument from bmap
2017-01-30 16:32:25 -08:00
xfs_buf_item.c
xfs: reset b_first_retry_time when clear the retry status of xfs_buf_t
2017-02-03 14:39:07 -08:00
xfs_buf_item.h
xfs: fix non-debug build warnings
2015-08-25 10:05:13 +10:00
xfs_buf.c
xfs: clear _XBF_PAGES from buffers when readahead page
2017-01-25 20:24:57 -08:00
xfs_buf.h
xfs: use rhashtable to track buffer cache
2016-12-07 17:36:36 +11:00
xfs_dir2_readdir.c
xfs: remove i_iolock and use i_rwsem in the VFS inode instead
2016-11-30 14:33:25 +11:00
xfs_discard.c
xfs: rmap btree requires more reserved free space
2016-08-03 11:38:24 +10:00
xfs_discard.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_dquot_item.c
xfs: allocate log vector buffers outside CIL context lock
2016-07-22 09:52:35 +10:00
xfs_dquot_item.h
xfs: remove the quotaoff log format from the quotaoff log item
2013-12-13 11:34:08 +11:00
xfs_dquot.c
xfs: don't wrap ID in xfs_dq_get_next_id
2017-01-17 11:43:38 -08:00
xfs_dquot.h
xfs: fix implicit bool to int conversion
2015-01-09 10:48:58 +11:00
xfs_error.c
Merge branch 'xfs-4.8-misc-fixes-3' into for-next
2016-07-20 11:51:08 +10:00
xfs_error.h
xfs: simulate per-AG reservations being critically low
2016-10-05 16:26:31 -07:00
xfs_export.c
xfs: abstract block export operations from nfsd layouts
2016-07-15 15:31:29 -04:00
xfs_export.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_extent_busy.c
xfs: remote attribute blocks aren't really userdata
2016-09-26 08:21:28 +10:00
xfs_extent_busy.h
xfs: decouple inode and bmap btree header files
2013-10-23 16:28:49 -05:00
xfs_extfree_item.c
xfs: remove unnecessary parentheses from log redo item recovery functions
2016-08-03 12:29:32 +10:00
xfs_extfree_item.h
xfs: refactor redo intent item processing
2016-08-03 11:23:49 +10:00
xfs_file.c
xfs: allocate direct I/O COW blocks in iomap_begin
2017-02-06 17:47:47 -08:00
xfs_filestream.c
Merge branch 'xfs-4.9-log-recovery-fixes' into for-next
2016-10-03 09:56:28 +11:00
xfs_filestream.h
xfs: add filestream allocator tracepoints
2014-04-23 07:11:52 +10:00
xfs_fsops.c
xfs: remove boilerplate around xfs_btree_init_block
2017-01-30 16:32:24 -08:00
xfs_fsops.h
xfs: preallocate blocks for worst-case btree expansion
2016-10-05 16:26:27 -07:00
xfs_globals.c
xfs: garbage collect old cowextsz reservations
2016-10-05 16:26:28 -07:00
xfs_icache.c
xfs: sync eofblocks scans under iolock are livelock prone
2017-01-30 16:32:25 -08:00
xfs_icache.h
xfs: sync eofblocks scans under iolock are livelock prone
2017-01-30 16:32:25 -08:00
xfs_icreate_item.c
fs: xfs: xfs_icreate_item: constify xfs_item_ops structure
2016-11-28 14:57:42 +11:00
xfs_icreate_item.h
xfs: separate icreate log format definitions from xfs_icreate_item.h
2013-08-12 16:10:35 -05:00
xfs_inode_item.c
xfs: provide helper for counting extents from if_bytes
2016-11-08 12:59:42 +11:00
xfs_inode_item.h
xfs: remove timestamps from incore inode
2016-02-09 16:54:58 +11:00
xfs_inode.c
xfs: pull up iolock from xfs_free_eofblocks()
2017-01-30 16:32:25 -08:00
xfs_inode.h
xfs: remove i_iolock and use i_rwsem in the VFS inode instead
2016-11-30 14:33:25 +11:00
xfs_ioctl32.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
xfs_ioctl32.h
xfs: compat_xfs_bstat does not have forkoff
2014-10-02 09:17:58 +10:00
xfs_ioctl.c
xfs: remove unused full argument from bmap
2017-01-30 16:32:25 -08:00
xfs_ioctl.h
xfs: don't pass ioflags around in the ioctl path
2016-07-20 11:29:35 +10:00
xfs_iomap.c
xfs: allocate direct I/O COW blocks in iomap_begin
2017-02-06 17:47:47 -08:00
xfs_iomap.h
xfs: introduce xfs_aligned_fsb_count
2017-02-06 17:47:46 -08:00
xfs_iops.c
xfs: sanity check inode mode when creating new dentry
2017-01-17 11:42:22 -08:00
xfs_iops.h
xfs: Propagate dentry down to inode_change_ok()
2016-09-22 10:56:19 +02:00
xfs_itable.c
xfs: create a separate cow extent size hint for the allocator
2016-10-05 16:26:26 -07:00
xfs_itable.h
xfs: bulkstat chunk formatting cursor is broken
2014-11-07 08:30:30 +11:00
xfs_linux.h
xfs: make the ASSERT() condition likely
2017-01-17 11:41:41 -08:00
xfs_log_cil.c
xfs: allocate log vector buffers outside CIL context lock
2016-07-22 09:52:35 +10:00
xfs_log_priv.h
xfs: rework log recovery to submit buffers on LSN boundaries
2016-09-26 08:22:16 +10:00
xfs_log_recover.c
Merge branch 'xfs-4.10-misc-fixes-3' into for-next
2016-12-07 17:42:30 +11:00
xfs_log.c
xfs: don't print warnings when xfs_log_force fails
2017-01-09 13:45:01 -08:00
xfs_log.h
xfs: remove unused struct declarations
2017-01-30 16:32:25 -08:00
xfs_message.c
xfs: more info from kmem deadlocks and high-level error msgs
2015-10-12 16:04:45 +11:00
xfs_message.h
xfs: introduce CONFIG_XFS_WARN
2013-05-07 18:45:36 -05:00
xfs_mount.c
xfs: correct null checks and error processing in xfs_initialize_perag
2017-02-09 10:50:25 -08:00
xfs_mount.h
xfs: use per-AG reservations for the finobt
2017-01-25 07:49:35 -08:00
xfs_mru_cache.c
xfs: xfs_mru_cache_insert() should use GFP_NOFS
2015-03-25 14:57:53 +11:00
xfs_mru_cache.h
xfs: embedd mru_elem into parent structure
2014-04-23 07:11:51 +10:00
xfs_ondisk.h
xfs: define the on-disk refcount btree format
2016-10-03 09:11:18 -07:00
xfs_pnfs.c
xfs: remove i_iolock and use i_rwsem in the VFS inode instead
2016-11-30 14:33:25 +11:00
xfs_pnfs.h
xfs: remove i_iolock and use i_rwsem in the VFS inode instead
2016-11-30 14:33:25 +11:00
xfs_qm_bhv.c
xfs: move most of xfs_sb.h to xfs_format.h
2014-11-28 14:27:09 +11:00
xfs_qm_syscalls.c
xfs: better xfs_trans_alloc interface
2016-04-06 09:19:55 +10:00
xfs_qm.c
xfs: prevent quotacheck from overloading inode lru
2017-01-27 09:32:30 -08:00
xfs_qm.h
xfs: Split default quota limits by quota type
2016-02-08 11:27:55 +11:00
xfs_quota.h
xfs: fix quota block reservation leak when tp allocates and frees blocks
2015-06-01 07:15:37 +10:00
xfs_quotaops.c
xfs: wire up Q_XGETNEXTQUOTA / get_nextdqblk
2016-02-08 11:27:38 +11:00
xfs_refcount_item.c
xfs: fix double-cleanup when CUI recovery fails
2017-01-03 18:39:32 -08:00
xfs_refcount_item.h
xfs: log refcount intent items
2016-10-03 09:11:21 -07:00
xfs_reflink.c
xfs: update ctime and mtime on clone destinatation inodes
2017-02-09 10:50:24 -08:00
xfs_reflink.h
xfs: allocate direct I/O COW blocks in iomap_begin
2017-02-06 17:47:47 -08:00
xfs_rmap_item.c
xfs: convert unwritten status of reverse mappings for shared files
2016-10-05 16:26:29 -07:00
xfs_rmap_item.h
xfs: convert RUI log formats to use variable length arrays
2016-09-19 10:24:27 +10:00
xfs_rtalloc.c
xfs: rename flist/free_list to dfops
2016-08-03 11:19:29 +10:00
xfs_rtalloc.h
xfs: make several functions static
2016-06-01 17:38:15 +10:00
xfs_stats.c
xfs: make xfs btree stats less huge
2016-12-05 14:38:58 +11:00
xfs_stats.h
xfs: make xfs btree stats less huge
2016-12-05 14:38:58 +11:00
xfs_super.c
xfs: deprecate barrier/nobarrier mount option
2016-12-09 16:49:54 +11:00
xfs_super.h
xfs: quiesce the filesystem after recovery on readonly mount
2016-09-26 08:21:44 +10:00
xfs_symlink.c
xfs: remove i_iolock and use i_rwsem in the VFS inode instead
2016-11-30 14:33:25 +11:00
xfs_symlink.h
xfs: push down inactive transaction mgmt for remote symlinks
2013-10-08 14:53:02 -05:00
xfs_sysctl.c
xfs: garbage collect old cowextsz reservations
2016-10-05 16:26:28 -07:00
xfs_sysctl.h
xfs: garbage collect old cowextsz reservations
2016-10-05 16:26:28 -07:00
xfs_sysfs.c
xfs: fix max_retries _show and _store functions
2017-01-03 20:34:17 -08:00
xfs_sysfs.h
xfs: configurable error behavior via sysfs
2016-05-18 10:58:51 +10:00
xfs_trace.c
xfs: rework xfs_bmap_free callers to use xfs_defer_ops
2016-08-03 11:15:38 +10:00
xfs_trace.h
xfs: allocate direct I/O COW blocks in iomap_begin
2017-02-06 17:47:47 -08:00
xfs_trans_ail.c
xfs: Make xfsaild freezeable again
2016-02-08 14:59:07 +11:00
xfs_trans_bmap.c
xfs: implement deferred bmbt map/unmap operations
2016-10-04 11:05:44 -07:00
xfs_trans_buf.c
xfs: remove XBF_STALE flag wrapper macros
2016-02-10 15:01:11 +11:00
xfs_trans_dquot.c
xfs: Split default quota limits by quota type
2016-02-08 11:27:55 +11:00
xfs_trans_extfree.c
xfs: set up per-AG free space reservations
2016-09-19 10:30:52 +10:00
xfs_trans_inode.c
fs: Replace current_fs_time() with current_time()
2016-09-27 21:06:22 -04:00
xfs_trans_priv.h
xfs: add helper to conditionally remove items from the AIL
2015-08-19 10:01:08 +10:00
xfs_trans_refcount.c
xfs: connect refcount adjust functions to upper layers
2016-10-03 09:11:22 -07:00
xfs_trans_rmap.c
xfs: add shared rmap map/unmap/convert log item types
2016-10-05 16:26:29 -07:00
xfs_trans.c
Merge branch 'xfs-4.9-reflink-prep' into for-next
2016-10-03 09:52:31 +11:00
xfs_trans.h
xfs: remove unused struct declarations
2017-01-30 16:32:25 -08:00
xfs_xattr.c
xfs: several xattr functions can be void
2016-12-05 12:32:14 +11:00
xfs.h
xfs: introduce CONFIG_XFS_WARN
2013-05-07 18:45:36 -05:00