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4.9.236-39
linux/fs/xfs
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Eiichi Tsukata a7631e087f xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init 
[ Upstream commit 96cf2a2c75 ]

If xfs_sysfs_init is called with parent_kobj == NULL, UBSAN
shows the following warning:

  UBSAN: null-ptr-deref in ./fs/xfs/xfs_sysfs.h:37:23
  member access within null pointer of type 'struct xfs_kobj'
  Call Trace:
   dump_stack+0x10e/0x195
   ubsan_type_mismatch_common+0x241/0x280
   __ubsan_handle_type_mismatch_v1+0x32/0x40
   init_xfs_fs+0x12b/0x28f
   do_one_initcall+0xdd/0x1d0
   do_initcall_level+0x151/0x1b6
   do_initcalls+0x50/0x8f
   do_basic_setup+0x29/0x2b
   kernel_init_freeable+0x19f/0x20b
   kernel_init+0x11/0x1e0
   ret_from_fork+0x22/0x30

Fix it by checking parent_kobj before the code accesses its member.

Signed-off-by: Eiichi Tsukata <devel@etsukata.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: minor whitespace edits]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-26 10:29:05 +02:00
..
libxfs
xfs: don't call xfs_da_shrink_inode with NULL bp
2020-08-21 11:01:47 +02:00
Kconfig
xfs: implement iomap based buffered write path
2016-06-21 09:53:44 +10:00
kmem.c
xfs: remove kmem_zalloc_greedy
2017-10-08 10:26:11 +02:00
kmem.h
xfs: remove kmem_zalloc_greedy
2017-10-08 10:26:11 +02:00
Makefile
xfs: introduce the CoW fork
2016-10-04 18:06:40 -07:00
mrlock.h
…
uuid.c
…
uuid.h
…
xfs_acl.c
xfs: don't change inode mode if ACL update fails
2017-10-27 10:38:10 +02:00
xfs_acl.h
xfs: Don't clear SGID when inheriting ACLs
2017-07-27 15:08:03 -07:00
xfs_aops.c
xfs: ubsan fixes
2018-02-03 17:05:40 +01:00
xfs_aops.h
xfs: allocate delayed extents in CoW fork
2016-10-04 18:06:41 -07:00
xfs_attr_inactive.c
xfs: reinit btree pointer on attr tree inactivation walk
2017-10-27 10:38:10 +02:00
xfs_attr_list.c
xfs: make several functions static
2016-06-01 17:38:15 +10:00
xfs_attr.h
xfs: remove put_value from attr ->put_listent context
2016-04-06 07:57:45 +10:00
xfs_bmap_item.c
xfs: try to avoid blowing out the transaction reservation when bunmaping a shared extent
2017-09-20 08:19:57 +02:00
xfs_bmap_item.h
xfs: log bmap intent items
2016-10-04 11:05:44 -07:00
xfs_bmap_util.c
xfs: move more RT specific code under CONFIG_XFS_RT
2017-10-27 10:38:10 +02:00
xfs_bmap_util.h
xfs: move more RT specific code under CONFIG_XFS_RT
2017-10-27 10:38:10 +02:00
xfs_buf_item.c
xfs: fix compiler warnings
2017-09-20 08:20:02 +02:00
xfs_buf_item.h
xfs: remove unnecessary dirty bli format check for ordered bufs
2017-09-20 08:20:01 +02:00
xfs_buf.c
xfs: fix use-after-free race in xfs_buf_rele
2019-11-28 18:28:28 +01:00
xfs_buf.h
xfs: push buffer of flush locked dquot to avoid quotacheck deadlock
2017-09-20 08:19:57 +02:00
xfs_dir2_readdir.c
xfs: prevent multi-fsb dir readahead from reading random blocks
2017-06-07 12:07:51 +02:00
xfs_discard.c
Force log to disk before reading the AGF during a fstrim
2018-05-30 07:50:40 +02:00
xfs_discard.h
…
xfs_dquot_item.c
xfs: Properly retry failed dquot items in case of error during buffer writeback
2018-02-03 17:05:40 +01:00
xfs_dquot_item.h
…
xfs_dquot.c
xfs: Properly retry failed dquot items in case of error during buffer writeback
2018-02-03 17:05:40 +01:00
xfs_dquot.h
…
xfs_error.c
fs/xfs: Use %pS printk format for direct addresses
2017-10-27 10:38:09 +02:00
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_extent_busy.c
xfs: don't fail xfs_extent_busy allocation
2017-04-08 09:30:31 +02:00
xfs_extent_busy.h
…
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: prevent creating negative-sized file via INSERT_RANGE
2018-05-09 09:50:21 +02:00
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_fsops.c
xfs: use the actual AG length when reserving blocks
2017-01-12 11:39:44 +01:00
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: validate cached inodes are free when allocated
2020-08-21 11:01:47 +02:00
xfs_icache.h
xfs: update ag iterator to support wait on new inodes
2017-06-07 12:07:52 +02:00
xfs_icreate_item.c
…
xfs_icreate_item.h
…
xfs_inode_item.c
xfs: Don't log uninitialised fields in inode structures
2017-10-27 10:38:09 +02:00
xfs_inode_item.h
xfs: remove timestamps from incore inode
2016-02-09 16:54:58 +11:00
xfs_inode.c
xfs: always free inline data before resetting inode fork during ifree
2018-02-03 17:05:38 +01:00
xfs_inode.h
xfs: support ability to wait on new inodes
2017-06-07 12:07:51 +02:00
xfs_ioctl32.c
xfs: Fix bulkstat compat ioctls on x32 userspace.
2019-12-05 15:34:37 +01:00
xfs_ioctl32.h
…
xfs_ioctl.c
xfs: validate bdev support for DAX inode flag
2017-10-05 09:44:03 +02:00
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: update i_size after unwritten conversion in dio completion
2017-10-27 10:38:09 +02:00
xfs_iomap.h
xfs: update i_size after unwritten conversion in dio completion
2017-10-27 10:38:09 +02:00
xfs_iops.c
xfs: fix missing ILOCK unlock when xfs_setattr_nonsize fails due to EDQUOT
2019-09-06 10:19:40 +02:00
xfs_iops.h
xfs: Propagate dentry down to inode_change_ok()
2016-09-22 10:56:19 +02:00
xfs_itable.c
xfs: remove kmem_zalloc_greedy
2017-10-08 10:26:11 +02:00
xfs_itable.h
…
xfs_linux.h
xfs: XFS_IS_REALTIME_INODE() should be false if no rt device present
2017-09-13 14:13:37 -07:00
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
xfs: fix log block underflow during recovery cycle verification
2017-12-20 10:07:31 +01:00
xfs_log.c
xfs: fix missed wakeup on l_flush_wait
2020-08-21 11:01:49 +02:00
xfs_log.h
xfs: make several functions static
2016-06-01 17:38:15 +10:00
xfs_message.c
…
xfs_message.h
…
xfs_mount.c
xfs: don't leak quotacheck dquots when cow recovery
2017-09-20 08:19:59 +02:00
xfs_mount.h
xfs: detect agfl count corruption and reset agfl
2018-06-06 16:44:32 +02:00
xfs_mru_cache.c
…
xfs_mru_cache.h
…
xfs_ondisk.h
xfs: Don't log uninitialised fields in inode structures
2017-10-27 10:38:09 +02:00
xfs_pnfs.c
xfs: update i_size after unwritten conversion in dio completion
2017-10-27 10:38:09 +02:00
xfs_pnfs.h
xfs: abstract block export operations from nfsd layouts
2016-07-15 15:31:29 -04:00
xfs_qm_bhv.c
…
xfs_qm_syscalls.c
xfs: wait on new inodes during quotaoff dquot release
2017-06-07 12:07:52 +02:00
xfs_qm.c
xfs: quota: check result of register_shrinker()
2018-03-03 10:23:25 +01:00
xfs_qm.h
xfs: Split default quota limits by quota type
2016-02-08 11:27:55 +11:00
xfs_quota.h
…
xfs_quotaops.c
xfs: Sanity check flags of Q_XQUOTARM call
2020-01-29 10:24:00 +01:00
xfs_refcount_item.c
xfs: fix double-cleanup when CUI recovery fails
2017-01-12 11:39:44 +01:00
xfs_refcount_item.h
xfs: log refcount intent items
2016-10-03 09:11:21 -07:00
xfs_reflink.c
xfs: fix reflink quota reservation accounting error
2020-08-21 11:02:01 +02:00
xfs_reflink.h
xfs: only reclaim unwritten COW extents periodically
2017-04-08 09:30:32 +02:00
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: require both realtime inodes to mount
2019-12-05 15:34:21 +01:00
xfs_rtalloc.h
xfs: make several functions static
2016-06-01 17:38:15 +10:00
xfs_stats.c
xfs: introduce refcount btree definitions
2016-10-03 09:11:16 -07:00
xfs_stats.h
xfs: introduce refcount btree definitions
2016-10-03 09:11:16 -07:00
xfs_super.c
xfs: clear sb->s_fs_info on mount failure
2019-10-17 13:42:47 -07:00
xfs_super.h
xfs: quiesce the filesystem after recovery on readonly mount
2016-09-26 08:21:44 +10:00
xfs_symlink.c
xfs: rename flist/free_list to dfops
2016-08-03 11:19:29 +10:00
xfs_symlink.h
…
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
2017-01-12 11:39:45 +01:00
xfs_sysfs.h
xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init
2020-08-26 10:29:05 +02:00
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: detect agfl count corruption and reset agfl
2018-06-06 16:44:32 +02:00
xfs_trans_ail.c
xfs: Properly retry failed inode items in case of error during buffer writeback
2017-09-20 08:20:00 +02:00
xfs_trans_bmap.c
xfs: try to avoid blowing out the transaction reservation when bunmaping a shared extent
2017-09-20 08:19:57 +02:00
xfs_trans_buf.c
xfs: disallow marking previously dirty buffers as ordered
2017-09-20 08:20:02 +02:00
xfs_trans_dquot.c
xfs: fix inode quota reservation checks
2020-08-26 10:29:05 +02:00
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: Properly retry failed inode items in case of error during buffer writeback
2017-09-20 08:20:00 +02:00
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
xfs: xfs_trans_alloc_empty
2017-06-07 12:07:52 +02:00
xfs_trans.h
xfs: disallow marking previously dirty buffers as ordered
2017-09-20 08:20:02 +02:00
xfs_xattr.c
Make __xfs_xattr_put_listen preperly report errors.
2016-09-14 07:40:35 +10:00
xfs.h
…