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linux/fs
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Matthew Wilcox 0311ff82b7 fs: prevent page refcount overflow in pipe_buf_get 
commit 15fab63e1e upstream.

Change pipe_buf_get() to return a bool indicating whether it succeeded
in raising the refcount of the page (if the thing in the pipe is a page).
This removes another mechanism for overflowing the page refcount.  All
callers converted to handle a failure.

Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-04 09:20:11 +02:00
..
9p
9p locks: add mount option for lock retry interval
2019-04-20 09:16:00 +02:00
adfs
adfs: use timespec64 for time conversion
2018-08-22 10:52:51 -07:00
affs
…
afs
afs: Fix key refcounting in file locking code
2019-02-27 10:08:56 +01:00
autofs
autofs: fix error return in autofs_fill_super()
2019-03-13 14:02:32 -07:00
befs
fix a series of Documentation/ broken file name references
2018-06-15 18:10:01 -03:00
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:37:27 +01:00
btrfs
btrfs: prop: fix vanished compression property after failed set
2019-04-17 08:38:51 +02:00
cachefiles
fscache, cachefiles: remove redundant variable 'cache'
2018-12-17 09:24:40 +01:00
ceph
ceph: fix ci->i_head_snapc leak
2019-05-02 09:58:54 +02:00
cifs
cifs: do not attempt cifs operation on smb2+ rename error
2019-05-02 09:58:53 +02:00
coda
vfs: change inode times to use struct timespec64
2018-06-05 16:57:31 -07:00
configfs
configfs: fix registered group removal
2018-07-17 06:14:07 -07:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-13 11:08:55 -08:00
crypto
crypto: speck - remove Speck
2018-11-13 11:08:46 -08:00
debugfs
debugfs: fix debugfs_rename parameter checking
2019-02-15 08:10:11 +01:00
devpts
fs/devpts: always delete dcache dentry-s in dput()
2019-03-23 20:09:59 +01:00
dlm
dlm: Don't swamp the CPU with callbacks queued during recovery
2019-02-12 19:46:58 +01:00
ecryptfs
…
efivarfs
efivars: Call guid_parse() against guid_t type of variable
2018-07-22 14:13:44 +02:00
efs
…
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:13:00 +01:00
exportfs
exportfs: do not read dentry after free
2018-12-17 09:24:35 +01:00
ext2
ext2: Fix underflow in ext2_max_size()
2019-03-23 20:10:03 +01:00
ext4
ext4: fix some error pointer dereferences
2019-05-02 09:58:51 +02:00
f2fs
f2fs: fix to dirty inode for i_mode recovery
2019-04-20 09:16:05 +02:00
fat
fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()
2018-10-13 09:31:03 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 09:24:40 +01:00
fuse
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:20:11 +02:00
gfs2
gfs2: Fix missed wakeups in find_insert_glock
2019-03-13 14:02:40 -07:00
hfs
hfs: do not free node before using
2018-12-17 09:24:41 +01:00
hfsplus
hfsplus: do not free node before using
2018-12-17 09:24:41 +01:00
hostfs
vfs: discard ATTR_ATTR_FLAG
2018-08-17 16:20:28 -07:00
hpfs
hpfs: remove unnecessary checks on the value of r when assigning error code
2018-08-25 12:42:33 -07:00
hugetlbfs
hugetlbfs: fix races and page leaks during migration
2019-03-05 17:58:53 +01:00
isofs
isofs: reject hardware sector size > 2048 bytes
2018-08-21 11:37:41 +02:00
jbd2
jbd2: fix race when writing superblock
2019-04-05 22:33:07 +02:00
jffs2
jffs2: Fix use of uninitialized delayed_work, lockdep breakage
2019-01-26 09:32:37 +01:00
jfs
Merge tag 'jfs-4.19' of git://github.com/kleikamp/linux-shaggy
2018-08-15 22:47:23 -07:00
kernfs
fix cgroup_do_mount() handling of failure exits
2019-03-23 20:09:53 +01:00
lockd
NFS: fix mount/umount race in nlmclnt.
2019-04-03 06:26:21 +02:00
minix
…
nfs
NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.
2019-05-02 09:58:57 +02:00
nfs_common
…
nfsd
nfsd: Don't release the callback slot unless it was actually held
2019-05-02 09:58:54 +02:00
nilfs2
nilfs2: convert to SPDX license tags
2018-09-04 16:45:02 -07:00
nls
…
notify
inotify: Fix fsnotify_mark refcount leak in inotify_update_existing_watch()
2019-04-20 09:15:54 +02:00
ntfs
ntfs: mft: remove VLA usage
2018-08-17 16:20:27 -07:00
ocfs2
ocfs2: fix a panic problem caused by o2cb_ctl
2019-04-05 22:32:59 +02:00
omfs
…
openpromfs
…
orangefs
orangefs: remove redundant pointer orangefs_inode
2018-08-14 12:07:14 -04:00
overlayfs
ovl: Do not lose security.capability xattr over metadata file copy-up
2019-03-23 20:09:59 +01:00
proc
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
2019-05-02 09:58:56 +02:00
pstore
pstore/ram: Do not treat empty buffers as valid
2019-01-26 09:32:37 +01:00
qnx4
…
qnx6
…
quota
quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls.
2019-01-26 09:32:42 +01:00
ramfs
…
reiserfs
reiserfs: propagate errors from fill_with_dentries() properly
2018-11-27 16:12:59 +01:00
romfs
…
squashfs
Squashfs: Compute expected length from inode size rather than block length
2018-08-02 09:34:02 -07:00
sysfs
Merge tag 'driver-core-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2018-08-18 11:44:53 -07:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 09:24:30 +01:00
tracefs
tracefs: Annotate tracefs_ops with __ro_after_init
2018-07-31 11:32:44 -04:00
ubifs
ubifs: Handle re-linking of inodes correctly while recovery
2018-12-29 13:37:55 +01:00
udf
udf: Fix crash on IO error during truncate
2019-03-27 14:14:39 +09:00
ufs
fs/ufs: use ktime_get_real_seconds for sb and cg timestamps
2018-08-17 16:20:27 -07:00
xfs
xfs: eof trim writeback mapping as soon as it is cached
2019-02-12 19:47:23 +01:00
aio.c
Fix aio_poll() races
2019-05-02 09:58:59 +02:00
anon_inodes.c
anon_inode_getfile(): switch to alloc_file_pseudo()
2018-07-12 10:04:27 -04:00
attr.c
fs: Fix attr.c kernel-doc
2018-07-03 16:44:45 -04:00
bad_inode.c
get rid of 'opened' argument of ->atomic_open() - part 3
2018-07-12 10:04:20 -04:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
binfmt_elf.c
Merge tag 'mips_4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
2018-08-13 19:24:32 -07:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
turn filp_clone_open() into inline wrapper for dentry_open()
2018-07-10 23:29:03 -04:00
binfmt_script.c
Revert "exec: load_script: don't blindly truncate shebang string"
2019-02-15 09:09:54 +01:00
block_dev.c
block: fix the return errno for direct IO
2019-04-17 08:38:52 +02:00
buffer.c
fs: fix guard_bio_eod to check for real EOD errors
2019-04-05 22:33:00 +02:00
char_dev.c
…
compat_binfmt_elf.c
…
compat_ioctl.c
media: dvb/audio.h: get rid of unused APIs
2018-07-30 16:21:49 -04:00
compat.c
ncpfs: remove compat functionality
2018-06-05 19:23:26 +02:00
coredump.c
…
d_path.c
…
dax.c
dax: Use non-exclusive wait in wait_entry_unlocked()
2019-01-09 17:38:46 +01:00
dcache.c
fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb()
2019-02-06 17:30:11 +01:00
dcookies.c
…
direct-io.c
direct-io: allow direct writes to empty inodes
2019-03-05 17:58:50 +01:00
drop_caches.c
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
2019-03-13 14:02:32 -07:00
eventfd.c
Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL
2018-06-28 10:40:47 -07:00
eventpoll.c
fs/epoll: drop ovflist branch prediction
2019-02-12 19:47:19 +01:00
exec.c
exec: Fix mem leak in kernel_read_file
2019-03-10 07:17:21 +01:00
fcntl.c
signal: Don't send signals to tasks that don't exist
2018-08-15 23:03:20 -05:00
fhandle.c
…
file_table.c
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
file.c
fs/file.c: initialize init_files.resize_wait
2019-04-05 22:32:59 +02:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
writeback: synchronize sync(2) against cgroup writeback membership switches
2019-03-05 17:58:50 +01:00
inode.c
Revert "mm: don't reclaim inodes with many attached pages"
2019-02-20 10:25:47 +01:00
internal.h
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
ioctl.c
vfs: fix FIGETBSZ ioctl on an overlayfs file
2018-11-21 09:19:14 +01:00
iomap.c
iomap: fix a use after free in iomap_dio_rw
2019-03-13 14:02:29 -07:00
Kconfig
autofs: remove left-over autofs4 stubs
2018-06-11 08:22:34 -07:00
Kconfig.binfmt
kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt
2018-08-02 08:06:55 +09:00
libfs.c
…
locks.c
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
Makefile
autofs: remove left-over autofs4 stubs
2018-06-11 08:22:34 -07:00
mbcache.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
mount.h
…
mpage.c
mpage: mpage_readpages() should submit IO as read-ahead
2018-08-17 16:20:29 -07:00
namei.c
Revert "vfs: Allow userns root to call mknod on owned filesystems."
2018-12-29 13:37:54 +01:00
namespace.c
mnt: fix __detach_mounts infinite loop
2018-11-21 09:19:22 +01:00
no-block.c
…
nsfs.c
…
open.c
fs/open.c: allow opening only regular files during execve()
2019-04-03 06:26:23 +02:00
pipe.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:20:11 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
…
proc_namespace.c
…
read_write.c
vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1
2019-04-05 22:33:06 +02:00
readdir.c
…
select.c
Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL
2018-06-28 10:40:47 -07:00
seq_file.c
fs/seq_file.c: simplify seq_file iteration code and interface
2018-08-17 16:20:28 -07:00
signalfd.c
Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-06-16 16:21:50 +09:00
splice.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:20:11 +02:00
stack.c
…
stat.c
…
statfs.c
kernel: add kcompat_sys_{f,}statfs64()
2018-07-12 14:49:48 +01:00
super.c
Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax
2018-08-26 11:48:42 -07:00
sync.c
…
timerfd.c
Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-08-13 20:56:23 -07:00
userfaultfd.c
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-04-27 09:36:37 +02:00
utimes.c
…
xattr.c
sysfs: Do not return POSIX ACL xattrs via listxattr
2018-09-18 07:30:48 -04:00