Eiichi Tsukata a7631e087f xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init ...

[ Upstream commit 96cf2a2c75567ff56195fe3126d497a2e7e4379f ]

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: more info from kmem deadlocks and high-level error msgs

2015-10-12 16:04:45 +11:00

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

…