linux-hardened/fs/nilfs2
Al Viro 1e2e547a93 do d_instantiate/unlock_new_inode combinations safely
For anything NFS-exported we do _not_ want to unlock new inode
before it has grown an alias; original set of fixes got the
ordering right, but missed the nasty complication in case of
lockdep being enabled - unlock_new_inode() does
	lockdep_annotate_inode_mutex_key(inode)
which can only be done before anyone gets a chance to touch
->i_mutex.  Unfortunately, flipping the order and doing
unlock_new_inode() before d_instantiate() opens a window when
mkdir can race with open-by-fhandle on a guessed fhandle, leading
to multiple aliases for a directory inode and all the breakage
that follows from that.

	Correct solution: a new primitive (d_instantiate_new())
combining these two in the right order - lockdep annotate, then
d_instantiate(), then the rest of unlock_new_inode().  All
combinations of d_instantiate() with unlock_new_inode() should
be converted to that.

Cc: stable@kernel.org	# 2.6.29 and later
Tested-by: Mike Marshall <hubcap@omnibond.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-11 15:36:37 -04:00
..
alloc.c nilfs2: use i_blocksize() 2017-02-27 18:43:46 -08:00
alloc.h nilfs2: avoid bare use of 'unsigned' 2016-05-23 17:04:14 -07:00
bmap.c nilfs2: hide function name argument from nilfs_error() 2016-08-02 19:35:16 -04:00
bmap.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
btnode.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
btnode.h fs: have submit_bh users pass in op and flags separately 2016-06-07 13:41:38 -06:00
btree.c mm, pagevec: remove cold parameter for pagevecs 2017-11-15 18:21:06 -08:00
btree.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
cpfile.c nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
cpfile.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
dat.c nilfs2: reduce bare use of printk() with nilfs_msg() 2016-08-02 19:35:17 -04:00
dat.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
dir.c fs: Replace CURRENT_TIME with current_time() for inode timestamps 2016-09-27 21:06:21 -04:00
direct.c nilfs2: reduce bare use of printk() with nilfs_msg() 2016-08-02 19:35:17 -04:00
direct.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
export.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
file.c mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf 2017-02-24 17:46:54 -08:00
gcinode.c nilfs2: emit error message when I/O error is detected 2016-08-02 19:35:19 -04:00
ifile.c nilfs2: replace nilfs_warning() with nilfs_msg() 2016-08-02 19:35:18 -04:00
ifile.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
inode.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
ioctl.c fs: Replace CURRENT_TIME with current_time() for inode timestamps 2016-09-27 21:06:21 -04:00
Kconfig fs/nilfs2: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:39:04 -08:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mdt.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
mdt.h nilfs2: avoid bare use of 'unsigned' 2016-05-23 17:04:14 -07:00
namei.c do d_instantiate/unlock_new_inode combinations safely 2018-05-11 15:36:37 -04:00
nilfs.h nilfs2: move ioctl interface and disk layout to uapi separately 2016-08-02 19:35:21 -04:00
page.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
page.h nilfs2: avoid bare use of 'unsigned' 2016-05-23 17:04:14 -07:00
recovery.c nilfs2: reduce bare use of printk() with nilfs_msg() 2016-08-02 19:35:17 -04:00
segbuf.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
segbuf.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
segment.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
segment.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sufile.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sufile.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
super.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sysfs.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sysfs.h nilfs2: clean trailing semicolons in macros 2016-05-23 17:04:14 -07:00
the_nilfs.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
the_nilfs.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00