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linux/fs/ocfs2
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Pan Bian 56926f913b ocfs2: fix potential use after free 
[ Upstream commit 164f7e5867 ]

ocfs2_get_dentry() calls iput(inode) to drop the reference count of
inode, and if the reference count hits 0, inode is freed.  However, in
this function, it then reads inode->i_generation, which may result in a
use after free bug.  Move the put operation later.

Link: http://lkml.kernel.org/r/1543109237-110227-1-git-send-email-bianpan2016@163.com
Fixes: 781f200cb7a("ocfs2: Remove masklog ML_EXPORT.")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2018-12-17 09:28:54 +01:00
..
cluster
ocfs2: free up write context when direct IO failed
2018-11-21 09:24:09 +01:00
dlm
ocfs2: fix locking for res->tracking and dlm->tracking_list
2018-10-10 08:54:28 +02:00
dlmfs
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
acl.c
ocfs2/acl: use 'ip_xattr_sem' to protect getting extended attribute
2018-04-26 11:02:14 +02:00
acl.h
ocfs2: make ocfs2_set_acl() static
2017-09-06 17:27:24 -07:00
alloc.c
ocfs2: fstrim: Fix start offset of first cluster group during fstrim
2017-11-03 07:39:19 -07:00
alloc.h
ocfs2: clean up some dead code
2017-09-06 17:27:24 -07:00
aops.c
ocfs2: free up write context when direct IO failed
2018-11-21 09:24:09 +01:00
aops.h
ocfs2: clean up unused 'page' parameter in ocfs2_write_end_nolock()
2016-12-12 18:55:06 -08:00
blockcheck.c
ocfs2: kill endianness abuses in blockcheck.c
2012-05-29 23:28:35 -04:00
blockcheck.h
ocfs2: Add statistics for the checksum and ecc operations.
2009-06-03 19:15:36 -07:00
buffer_head_io.c
ocfs2: fix ocfs2 read block panic
2018-09-29 03:06:05 -07:00
buffer_head_io.h
ocfs2: Take the inode out of the metadata read/write paths.
2009-09-04 16:07:48 -07:00
dcache.c
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
dcache.h
ocfs2: revert iput deferring code in ocfs2_drop_dentry_lock
2014-04-03 16:20:55 -07:00
dir.c
ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry
2018-11-21 09:24:09 +01:00
dir.h
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
dlmglue.c
ocfs2: try a blocking lock before return AOP_TRUNCATED_PAGE
2018-02-22 15:42:16 +01:00
dlmglue.h
ocfs2/dlmglue: prepare tracking logic to avoid recursive cluster lock
2017-02-22 16:41:27 -08:00
export.c
ocfs2: fix potential use after free
2018-12-17 09:28:54 +01:00
export.h
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
extent_map.c
ocfs2: neaten do_error, ocfs2_error and ocfs2_abort
2015-09-04 16:54:41 -07:00
extent_map.h
ocfs2: Implement llseek()
2011-07-25 14:58:15 -07:00
file.c
ocfs2: should wait dio before inode lock in ocfs2_setattr()
2017-11-24 08:37:04 +01:00
file.h
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
filecheck.c
ocfs2: sysfile interfaces for online file check
2016-03-22 15:36:02 -07:00
filecheck.h
ocfs2: sysfile interfaces for online file check
2016-03-22 15:36:02 -07:00
heartbeat.c
ocfs2: Remove mlog(0) from fs/ocfs2/heartbeat.c
2011-02-23 21:17:39 +08:00
heartbeat.h
ocfs2: Move o2hb functionality into the stack glue.
2008-04-18 08:56:04 -07:00
inode.c
ocfs2: fix a static checker warning
2017-07-06 16:24:30 -07:00
inode.h
ocfs2: convert inode refcount test to a helper
2016-12-10 12:39:45 -08:00
ioctl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ioctl.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
journal.c
ocfs2: return error when we attempt to access a dirty bh in jbd2
2018-04-26 11:02:14 +02:00
journal.h
jbd2: add support for avoiding data writes during transaction commits
2016-04-24 00:56:07 -04:00
Kconfig
ocfs2: Make OCFS2_FS depend on CONFIGFS_FS
2011-01-16 21:22:40 +00:00
localalloc.c
ocfs2: fix occurring deadlock by changing ocfs2_wq from global to local
2016-03-25 16:37:42 -07:00
localalloc.h
ocfs2: free allocated clusters if error occurs after ocfs2_claim_clusters
2014-02-06 13:48:51 -08:00
locks.c
ocfs2: fix flock panic issue
2015-12-29 17:45:49 -08:00
locks.h
ocfs2: POSIX file locks support
2008-10-13 13:57:57 -07:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mmap.c
mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
2017-02-24 17:46:54 -08:00
mmap.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
move_extents.c
ocfs2: fix deadlock caused by ocfs2_defrag_extent()
2018-12-17 09:28:54 +01:00
move_extents.h
Ocfs2/move_extents: move/defrag extents within a certain range.
2011-05-25 15:17:12 +08:00
namei.c
ocfs2: replace CURRENT_TIME macro
2016-12-12 18:55:06 -08:00
namei.h
ocfs2: do not include dio entry in case of orphan scan
2015-11-05 19:34:48 -08:00
ocfs1_fs_compat.h
fs/: Spelling fixes
2008-02-03 17:33:42 +02:00
ocfs2_fs.h
ocfs2: use magic.h
2017-07-06 16:24:30 -07:00
ocfs2_ioctl.h
Ocfs2/move_extents: Adding new ioctl code 'OCFS2_IOC_MOVE_EXT' to ocfs2.
2011-05-25 15:17:08 +08:00
ocfs2_lockid.h
ocfs2: Add new refcount tree lock resource in dlmglue.
2009-09-22 20:09:28 -07:00
ocfs2_lockingver.h
ocfs2_dlmfs: Enable the use of user cluster stacks.
2010-02-26 15:41:18 -08:00
ocfs2_trace.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ocfs2.h
ocfs2: clean up some dead code
2017-09-06 17:27:24 -07:00
quota_global.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
quota_local.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
quota.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
refcounttree.c
ocfs2: fix crash in ocfs2_duplicate_clusters_by_page()
2018-11-04 14:52:41 +01:00
refcounttree.h
ocfs2: implement the VFS clone_range, copy_range, and dedupe_range features
2016-12-10 12:39:45 -08:00
reservations.c
ocfs2: make resv_lock spinlock static
2015-02-10 14:30:29 -08:00
reservations.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
resize.c
ocfs2: solve a problem of crossing the boundary in updating backups
2016-03-25 16:37:42 -07:00
resize.h
[PATCH 2/2] ocfs2: Implement group add for online resize
2008-01-25 15:04:24 -08:00
slot_map.c
ocfs2: clean up an unneeded goto in ocfs2_put_slot()
2016-05-19 19:12:14 -07:00
slot_map.h
ocfs2: De-magic the in-memory slot map.
2008-04-18 08:56:03 -07:00
stack_o2cb.c
ocfs2: avoid a pointless delay in o2cb_cluster_check()
2015-04-14 16:48:57 -07:00
stack_user.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
stackglue.c
ocfs2: constify attribute_group structures
2017-07-06 16:24:30 -07:00
stackglue.h
ocfs2: fix crash caused by stale lvb with fsdlm plugin
2017-01-10 18:31:54 -08:00
suballoc.c
ocfs2: clean up some dead code
2017-09-06 17:27:24 -07:00
suballoc.h
ocfs2: rollback alloc_dinode counts when ocfs2_block_group_set_bits() failed
2014-04-03 16:20:56 -07:00
super.c
ocfs2: return -EROFS to mount.ocfs2 if inode block is invalid
2018-04-26 11:02:14 +02:00
super.h
ocfs2: fix occurring deadlock by changing ocfs2_wq from global to local
2016-03-25 16:37:42 -07:00
symlink.c
vfs: remove ".readlink = generic_readlink" assignments
2016-12-09 16:45:04 +01:00
symlink.h
ocfs: simplify symlink handling
2012-05-29 23:28:40 -04:00
sysfile.c
ocfs2: avoid system inode ref confusion by adding mutex lock
2014-04-03 16:20:57 -07:00
sysfile.h
…
uptodate.c
ocfs2: remove NULL assignments on static
2014-06-04 16:53:53 -07:00
uptodate.h
ocfs2: Pass struct ocfs2_caching_info to the journal functions.
2009-09-04 16:07:50 -07:00
xattr.c
ocfs2/acl: use 'ip_xattr_sem' to protect getting extended attribute
2018-04-26 11:02:14 +02:00
xattr.h
ocfs2: fix posix_acl_create deadlock
2016-05-12 15:52:50 -07:00