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Josh Triplett 9ce71148b0 devpts: if initialization failed, don't crash when opening /dev/ptmx 
If devpts failed to initialize, it would store an ERR_PTR in the global
devpts_mnt.  A subsequent open of /dev/ptmx would call devpts_new_index,
which would dereference devpts_mnt and crash.

Avoid storing invalid values in devpts_mnt; leave it NULL instead.  Make
both devpts_new_index and devpts_pty_new fail gracefully with ENODEV in
that case, which then becomes the return value to the userspace open call
on /dev/ptmx.

[akpm@linux-foundation.org: remove unneeded static]
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-06-30 19:44:58 -07:00
..
9p
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
adfs
fs/adfs: remove unneeded cast
2015-06-30 19:44:57 -07:00
affs
fs/affs/symlink.c: remove unneeded err variable
2015-06-30 19:44:57 -07:00
afs
net: Add a struct net parameter to sock_create_kern
2015-05-11 10:50:17 -04:00
autofs4
don't pass nameidata to ->follow_link()
2015-05-10 22:20:15 -04:00
befs
fs/befs/btree.c: remove unneeded initializations
2015-06-25 17:00:43 -07:00
bfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
btrfs
Merge branch 'for-4.2/core' of git://git.kernel.dk/linux-block
2015-06-25 14:29:53 -07:00
cachefiles
VFS: fs/cachefiles: d_backing_inode() annotations
2015-04-15 15:06:59 -04:00
ceph
ceph: switch to simple_follow_link()
2015-05-10 22:18:28 -04:00
cifs
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-06-22 12:51:21 -07:00
coda
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
configfs
configfs: unexport/make static config_item_init()
2015-06-24 17:49:39 -07:00
cramfs
…
debugfs
debugfs: switch to simple_follow_link()
2015-05-10 22:18:24 -04:00
devpts
devpts: if initialization failed, don't crash when opening /dev/ptmx
2015-06-30 19:44:58 -07:00
dlm
net: Add a struct net parameter to sock_create_kern
2015-05-11 10:50:17 -04:00
ecryptfs
get rid of assorted nameidata-related debris
2015-05-15 01:10:37 -04:00
efivarfs
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-05-06 10:57:37 -07:00
efs
fs/efs: femove unneeded cast
2015-06-25 17:00:42 -07:00
exofs
exofs: switch to {simple,page}_symlink_inode_operations
2015-05-10 22:18:27 -04:00
exportfs
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
ext2
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
ext3
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2015-06-24 20:07:10 -07:00
ext4
Merge branch 'akpm' (patches from Andrew)
2015-06-26 09:52:05 -07:00
f2fs
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
fat
writeback: separate out include/linux/backing-dev-defs.h
2015-06-02 08:33:34 -06:00
freevxfs
freevxfs: switch to simple_follow_link()
2015-05-10 22:18:27 -04:00
fscache
…
fuse
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
gfs2
GFS2: merge window
2015-06-27 09:47:46 -07:00
hfs
writeback: separate out include/linux/backing-dev-defs.h
2015-06-02 08:33:34 -06:00
hfsplus
writeback: separate out include/linux/backing-dev-defs.h
2015-06-02 08:33:34 -06:00
hostfs
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-06-22 12:51:21 -07:00
hpfs
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
hugetlbfs
mm/hugetlb: reduce arch dependent code about hugetlb_prefault_arch_hook
2015-06-24 17:49:41 -07:00
isofs
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
jbd
…
jbd2
Revert "jbd2: speedup jbd2_journal_dirty_metadata()"
2015-06-27 09:41:50 -07:00
jffs2
MTD fixes for 4.2
2015-06-23 17:38:39 -07:00
jfs
jfs: switch to simple_follow_link()
2015-05-10 22:18:26 -04:00
kernfs
Merge branch 'for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2015-06-26 19:50:04 -07:00
lockd
nfsd: eliminate NFSD_DEBUG
2015-04-21 16:16:02 -04:00
logfs
logfs: fix a pagecache leak for symlinks
2015-05-10 22:18:28 -04:00
minix
fs/minix: remove unneeded cast
2015-06-25 17:00:42 -07:00
ncpfs
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
nfs
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
nfs_common
…
nfsd
nfsd: wrap too long lines in nfsd4_encode_read
2015-06-22 14:15:05 -04:00
nilfs2
Merge branch 'akpm' (patches from Andrew)
2015-06-26 09:52:05 -07:00
nls
…
notify
fanotify: fix event filtering with FAN_ONDIR set
2015-03-12 18:46:08 -07:00
ntfs
mm: do not ignore mapping_gfp_mask in page cache allocation paths
2015-06-24 17:49:44 -07:00
ocfs2
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
omfs
omfs: fix potential integer overflow in allocator
2015-05-28 18:25:19 -07:00
openpromfs
…
overlayfs
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-06-22 12:51:21 -07:00
proc
fs, proc: introduce CONFIG_PROC_CHILDREN
2015-06-25 17:00:37 -07:00
pstore
ramoops: make it possible to change mem_type param.
2015-05-21 09:52:29 -07:00
qnx4
…
qnx6
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
quota
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
ramfs
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
reiserfs
Merge branch 'akpm' (patches from Andrew)
2015-06-26 09:52:05 -07:00
romfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
squashfs
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
sysfs
fs: sysfs: don't pass count == 0 to bin file readers
2015-06-01 10:17:17 +09:00
sysv
sysv: switch to simple_follow_link()
2015-05-10 22:18:26 -04:00
tracefs
tracing: Have mkdir and rmdir be part of tracefs
2015-02-03 12:48:43 -05:00
ubifs
This pull request includes the following UBI/UBIFS changes:
2015-06-25 14:11:34 -07:00
udf
udf: fix udf_load_pvoldesc()
2015-05-21 15:19:15 +02:00
ufs
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
xfs
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
aio.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-16 23:27:56 -04:00
anon_inodes.c
…
attr.c
…
bad_inode.c
don't bother with most of the bad_file_ops methods
2015-02-20 04:03:58 -05:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
fs/binfmt_elf.c:load_elf_binary(): return -EINVAL on zero-length mappings
2015-05-28 18:25:18 -07:00
binfmt_em86.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
binfmt_flat.c
…
binfmt_misc.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
binfmt_script.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
block_dev.c
The libnvdimm sub-system introduces, in addition to the libnvdimm-core,
2015-06-29 10:34:42 -07:00
buffer.c
buffer: remove unusued 'ret' variable
2015-06-02 09:22:34 -06:00
char_dev.c
fs: introduce f_op->mmap_capabilities for nommu mmap support
2015-01-20 14:02:58 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
Bluetooth: bnep: Add support for get bnep features via ioctl
2015-04-03 23:21:34 +02:00
compat.c
…
coredump.c
coredump: add __printf attribute to cn_*printf functions
2015-06-25 17:00:43 -07:00
dax.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
dcache.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-06-22 18:57:44 -07:00
dcookies.c
…
direct-io.c
direct-io: only inc/dec inode->i_dio_count for file systems
2015-04-24 15:45:28 -04:00
drop_caches.c
vmscan: per memory cgroup slab shrinkers
2015-02-12 18:54:09 -08:00
eventfd.c
eventfd: don't take the spinlock in eventfd_poll
2015-02-17 14:34:52 -08:00
eventpoll.c
epoll: optimize setting task running after blocking
2015-02-13 21:21:40 -08:00
exec.c
parisc,metag: Fix crashes due to stack randomization on stack-grows-upwards architectures
2015-05-12 22:03:44 +02:00
fcntl.c
vfs: renumber FMODE_NONOTIFY and add to uniqueness check
2015-01-08 15:10:52 -08:00
fhandle.c
vfs: read file_handle only once in handle_to_path
2015-06-02 10:29:07 -07:00
file_table.c
->aio_read and ->aio_write removed
2015-04-11 22:29:43 -04:00
file.c
mm: rcu-protected get_mm_exe_file()
2015-04-17 09:04:07 -04:00
filesystems.c
…
fs_pin.c
fs_pin: Allow for the possibility that m_list or s_list go unused.
2015-04-09 11:39:55 -05:00
fs_struct.c
…
fs-writeback.c
writeback: do foreign inode detection iff cgroup writeback is enabled
2015-06-17 12:47:37 -06:00
inode.c
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
2015-06-25 16:00:17 -07:00
internal.h
trylock_super(): replacement for grab_super_passive()
2015-02-22 11:38:42 -05:00
ioctl.c
fsioctl.c: make generic_block_fiemap() signal-tolerant
2015-02-10 14:30:30 -08:00
Kconfig
f2fs: relocate Kconfig from misc filesystems
2015-04-10 15:08:35 -07:00
Kconfig.binfmt
mm: split ET_DYN ASLR from mmap ASLR
2015-04-14 16:49:05 -07:00
libfs.c
new helper: free_page_put_link()
2015-05-11 08:13:13 -04:00
locks.c
proc: show locks in /proc/pid/fdinfo/X
2015-04-17 09:04:12 -04:00
Makefile
um: Remove hppfs
2015-05-31 13:23:08 +02:00
mbcache.c
…
mount.h
fs: use seq_open_private() for proc_mounts
2015-06-30 19:44:56 -07:00
mpage.c
writeback: implement foreign cgroup inode detection
2015-06-02 08:40:20 -06:00
namei.c
turn user_{path_at,path,lpath,path_dir}() into static inlines
2015-05-15 01:10:45 -04:00
namespace.c
fs: use seq_open_private() for proc_mounts
2015-06-30 19:44:56 -07:00
no-block.c
…
nsfs.c
VFS: assorted weird filesystems: d_inode() annotations
2015-04-15 15:06:58 -04:00
open.c
VFS: Handle lower layer dentry/inode in pathwalk
2015-05-11 08:13:10 -04:00
pipe.c
VFS: assorted weird filesystems: d_inode() annotations
2015-04-15 15:06:58 -04:00
pnode.c
mnt: Don't propagate unmounts to locked mounts
2015-04-02 20:34:20 -05:00
pnode.h
mnt: Honor MNT_LOCKED when detaching mounts
2015-04-09 11:39:55 -05:00
posix_acl.c
VFS: assorted d_backing_inode() annotations
2015-04-15 15:06:59 -04:00
proc_namespace.c
fs: use seq_open_private() for proc_mounts
2015-06-30 19:44:56 -07:00
read_write.c
new_sync_write(): discard ->ki_pos unless the return value is positive
2015-04-11 22:29:46 -04:00
readdir.c
…
select.c
locking/arch: Rename set_mb() to smp_store_mb()
2015-05-19 08:32:00 +02:00
seq_file.c
fs: document seq_open()'s usage of file->private_data
2015-06-30 19:44:57 -07:00
signalfd.c
…
splice.c
Merge branch 'akpm' (patches from Andrew)
2015-06-24 20:47:21 -07:00
stack.c
…
stat.c
VFS: assorted d_backing_inode() annotations
2015-04-15 15:06:59 -04:00
statfs.c
…
super.c
cleancache: remove limit on the number of cleancache enabled filesystems
2015-04-14 16:49:03 -07:00
sync.c
vfs: add support for a lazytime mount option
2015-02-05 02:45:00 -05:00
timerfd.c
…
utimes.c
…
xattr.c
evm: fix potential race when removing xattrs
2015-05-21 13:28:47 -04:00