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Dominique Martinet ebd55db37f v9fs_dir_readdir: fix double-free on p9stat_read error 
commit 81c99089bce693b94b775b6eb888115d2d540086 upstream.

p9stat_read will call p9stat_free on error, we should only free the
struct content on success.

There also is no need to "p9stat_init" st as the read function will
zero the whole struct for us anyway, so clean up the code a bit while
we are here.

Link: http://lkml.kernel.org/r/1535410108-20650-1-git-send-email-asmadeus@codewreck.org
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Reported-by: syzbot+d4252148d198410b864f@syzkaller.appspotmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-01 09:46:33 +01:00
..
9p
v9fs_dir_readdir: fix double-free on p9stat_read error
2018-12-01 09:46:33 +01:00
adfs
…
affs
affs_lookup(): close a race with affs_remove_link()
2018-05-30 07:48:51 +02:00
afs
afs: Fix afs_kill_pages()
2017-12-20 10:04:56 +01:00
autofs4
autofs: fix autofs_sbi() does not check super block type
2018-09-19 22:49:00 +02:00
befs
…
bfs
…
btrfs
btrfs: fix pinned underflow after transaction aborted
2018-11-27 16:08:01 +01:00
cachefiles
cachefiles: fix the race between cachefiles_bury_object() and rmdir(2)
2018-11-10 07:41:42 -08:00
ceph
ceph: drop negative child dentries before try pruning inode's alias
2017-12-20 10:04:52 +01:00
cifs
smb3: on kerberos mount if server doesn't specify auth type use krb5
2018-11-21 09:27:35 +01:00
coda
coda: fix 'kernel memory exposure attempt' in fsync
2017-11-24 08:32:25 +01:00
configfs
configfs: replace strncpy with memcpy
2018-11-21 09:27:44 +01:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-21 09:27:37 +01:00
debugfs
dentry name snapshots
2017-08-06 19:19:42 -07:00
devpts
devpts: clean up interface to pty drivers
2016-08-16 09:30:49 +02:00
dlm
dlm: avoid double-free on error path in dlm_device_{register,unregister}
2017-09-13 14:09:45 -07:00
ecryptfs
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
efivarfs
efi: Make efivarfs entries immutable by default
2016-03-03 15:07:09 -08:00
efs
…
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:08:00 +01:00
exportfs
…
ext2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
ext4
ext4: fix buffer leak in __ext4_read_dirblock() on error path
2018-11-21 09:27:44 +01:00
f2fs
f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize
2018-09-19 22:48:59 +02:00
fat
fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()
2018-11-10 07:41:40 -08:00
freevxfs
…
fscache
fscache: Allow cancelled operations to be enqueued
2018-09-05 09:18:35 +02:00
fuse
fuse: fix leaked notify reply
2018-11-21 09:27:44 +01:00
gfs2
gfs2: Put bitmap buffers in put_super
2018-11-27 16:08:01 +01:00
hfs
hfs: prevent btree data loss on root split
2018-11-27 16:08:00 +01:00
hfsplus
hfsplus: prevent btree data loss on root split
2018-11-27 16:08:00 +01:00
hostfs
hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
2016-09-30 10:18:39 +02:00
hpfs
hpfs: implement the show_options method
2016-06-01 12:15:54 -07:00
hugetlbfs
mm: larger stack guard gap, between vmas
2017-06-26 07:13:11 +02:00
isofs
isofs: fix timestamps beyond 2027
2017-11-30 08:37:20 +00:00
jbd2
jbd2: fix use after free in jbd2_log_do_checkpoint()
2018-11-21 09:27:34 +01:00
jffs2
jffs2: free jffs2_sb_info through jffs2_kill_sb()
2018-11-21 09:27:30 +01:00
jfs
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
2018-08-09 12:19:28 +02:00
kernfs
kernfs: fix regression in kernfs_fop_write caused by wrong type
2018-02-16 20:09:42 +01:00
lockd
lockd: fix access beyond unterminated strings in prints
2018-11-21 09:27:36 +01:00
logfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
minix
…
ncpfs
staging: ncpfs: memory corruption in ncp_read_kernel()
2018-03-28 18:40:15 +02:00
nfs
NFSv4.1: Fix the r/wsize checking
2018-11-21 09:27:35 +01:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2018-02-03 17:04:28 +01:00
nfsd
nfsd: fix corrupted reply to badly ordered compound
2018-10-10 08:52:07 +02:00
nilfs2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
nls
…
notify
fanotify: fix logic of events on child
2018-04-24 09:32:11 +02:00
ntfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
ocfs2
ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry
2018-11-21 09:27:42 +01:00
omfs
…
openpromfs
…
overlayfs
ovl: proper cleanup of workdir
2018-09-15 09:40:41 +02:00
proc
proc: restrict kernel stack dumps to root
2018-10-10 08:52:13 +02:00
pstore
pstore: Fix incorrect persistent ram buffer mapping
2018-09-26 08:35:07 +02:00
qnx4
…
qnx6
…
quota
fs/quota: Fix spectre gadget in do_quotactl
2018-09-09 20:04:36 +02:00
ramfs
mm, fs: obey gfp_mapping for add_to_page_cache()
2015-10-16 11:42:28 -07:00
reiserfs
reiserfs: propagate errors from fill_with_dentries() properly
2018-11-27 16:08:00 +01:00
romfs
romfs: use different way to generate fsid for BLOCK or MTD
2017-06-17 06:39:38 +02:00
squashfs
squashfs: more metadata hardenings
2018-08-06 16:24:42 +02:00
sysfs
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
2018-09-05 09:18:40 +02:00
sysv
fix sysvfs symlinks
2015-11-23 21:11:08 -05:00
tracefs
tracefs: Fix refcount imbalance in start_creating()
2015-11-04 22:13:45 -05:00
ubifs
ubifs: Check for name being NULL while mounting
2018-10-13 09:11:34 +02:00
udf
udf: Detect incorrect directory size
2018-07-03 11:21:34 +02:00
ufs
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
xfs
xfs: fix incorrect log_flushed on fsync
2018-06-13 16:15:27 +02:00
aio.c
fix io_destroy()/aio_complete() race
2018-06-06 16:46:23 +02:00
anon_inodes.c
…
attr.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
libnvdimm for 4.4:
2015-11-10 12:07:22 -08:00
binfmt_elf.c
fs, elf: make sure to page align bss in load_elf_library
2018-11-21 09:27:41 +01:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
fs/binfmt_misc.c: do not allow offset overflow
2018-07-03 11:21:26 +02:00
binfmt_script.c
…
block_dev.c
fs/block_dev: always invalidate cleancache in invalidate_bdev()
2017-05-20 14:27:01 +02:00
buffer.c
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
char_dev.c
…
compat_binfmt_elf.c
binfmt_elf: compat: avoid unused function warning
2018-02-25 11:03:51 +01:00
compat_ioctl.c
fs: compat: Remove warning from COMPATIBLE_IOCTL
2018-04-08 11:51:57 +02:00
compat.c
…
coredump.c
coredump: Ensure proper size of sparse core files
2017-07-05 14:37:20 +02:00
dax.c
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
dcache.c
fs/dcache.c: fix kmemcheck splat at take_dentry_name_snapshot()
2018-09-15 09:40:38 +02:00
dcookies.c
…
direct-io.c
direct-io: Prevent NULL pointer access in submit_page_section
2017-10-18 09:20:42 +02:00
drop_caches.c
…
eventfd.c
…
eventpoll.c
epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove()
2017-09-07 08:34:10 +02:00
exec.c
exec: Limit arg stack to at most 75% of _STK_LIM
2017-07-21 07:44:57 +02:00
fcntl.c
fs/fcntl: f_setown, avoid undefined behaviour
2018-01-31 12:06:11 +01:00
fhandle.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-04-12 09:08:58 -07:00
file_table.c
…
file.c
vfs: clear remainder of 'full_fds_bits' in dup_fd()
2015-11-05 23:05:32 -08:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
bdi: Fix oops in wb_workfn()
2018-05-16 10:06:51 +02:00
inode.c
Fix up non-directory creation in SGID directories
2018-07-17 11:31:43 +02:00
internal.h
…
ioctl.c
…
Kconfig
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
Kconfig.binfmt
…
libfs.c
…
locks.c
locks: don't check for race with close when setting OFD lock
2018-01-17 09:35:27 +01:00
Makefile
ext4: promote ext4 over ext2 in the default probe order
2015-10-15 10:33:21 -04:00
mbcache.c
…
mount.h
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:44:57 +02:00
mpage.c
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
namei.c
getname_kernel() needs to make sure that ->name != ->iname in long case
2018-04-24 09:32:04 +02:00
namespace.c
mount: Prevent MNT_DETACH from disconnecting locked mounts
2018-11-21 09:27:44 +01:00
no-block.c
…
nsfs.c
nsfs: mark dentry with DCACHE_RCUACCESS
2018-02-16 20:09:43 +01:00
open.c
fs: completely ignore unknown open flags
2017-07-15 11:57:44 +02:00
pipe.c
pipe: cap initial pipe capacity according to pipe-max-size limit
2018-05-26 08:48:51 +02:00
pnode.c
mnt: Make propagate_umount less slow for overlapping mount propagation trees
2017-07-21 07:44:58 +02:00
pnode.h
mnt: Add a per mount namespace limit on the number of mounts
2017-04-30 05:49:28 +02:00
posix_acl.c
tmpfs: clear S_ISGID when setting posix ACLs
2017-01-26 08:23:47 +01:00
proc_namespace.c
vfs: show_vfsstat: do not ignore errors from show_devname method
2016-04-12 09:08:55 -07:00
read_write.c
vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets
2017-10-05 09:41:45 +02:00
readdir.c
…
select.c
fs/select: add vmalloc fallback for select(2)
2018-01-31 12:06:09 +01:00
seq_file.c
Make file credentials available to the seqfile interfaces
2017-08-06 19:19:42 -07:00
signalfd.c
…
splice.c
vfs: fix uninitialized flags in splice_to_pipe()
2017-02-23 17:43:09 +01:00
stack.c
…
stat.c
ufs: restore maintaining ->i_blocks
2017-06-14 13:16:24 +02:00
statfs.c
…
super.c
sget(): handle failures of register_shrinker()
2018-03-03 10:19:41 +01:00
sync.c
fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback
2015-11-06 17:50:42 -08:00
timerfd.c
timerfd: Protect the might cancel mechanism proper
2017-05-08 07:46:01 +02:00
userfaultfd.c
userfaultfd: shmem: __do_fault requires VM_FAULT_NOPAGE
2017-12-20 10:04:53 +01:00
utimes.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
xattr.c
getxattr: use correct xattr length
2018-09-09 20:04:36 +02:00