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Theodore Ts'o 5bad8861ed UPSTREAM: ext4: fix check to prevent initializing reserved inodes 
commit 5012284700 upstream.

Commit 8844618d8a: "ext4: only look at the bg_flags field if it is
valid" will complain if block group zero does not have the
EXT4_BG_INODE_ZEROED flag set.  Unfortunately, this is not correct,
since a freshly created file system has this flag cleared.  It gets
almost immediately after the file system is mounted read-write --- but
the following somewhat unlikely sequence will end up triggering a
false positive report of a corrupted file system:

   mkfs.ext4 /dev/vdc
   mount -o ro /dev/vdc /vdc
   mount -o remount,rw /dev/vdc

Instead, when initializing the inode table for block group zero, test
to make sure that itable_unused count is not too large, since that is
the case that will result in some or all of the reserved inodes
getting cleared.

This fixes the failures reported by Eric Whiteney when running
generic/230 and generic/231 in the the nojournal test case.

Change-Id: I799bfafa4712e2dd29268c7481b539b23e2cf475
Fixes: 8844618d8a ("ext4: only look at the bg_flags field if it is valid")
Reported-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tao Huang <huangtao@rock-chips.com>
(cherry picked from commit 7736fcede7)
2018-08-17 10:34:02 +08:00
..
9p fs/9p: Compare qid.path in v9fs_test_inode 2017-11-30 08:37:22 +00:00
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: mount point create should honour passed in mode 2018-04-24 09:32:11 +02:00
befs
bfs
btrfs Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-07-18 13:38:21 +01:00
cachefiles FS-Cache: Add missing initialization of ret in cachefiles_write_page() 2015-11-16 20:38:43 -05:00
ceph ceph: drop negative child dentries before try pruning inode's alias 2017-12-20 10:04:52 +01:00
cifs cifs: Fix infinite loop when using hard mount option 2018-07-11 16:03:48 +02:00
coda coda: fix 'kernel memory exposure attempt' in fsync 2017-11-24 08:32:25 +01:00
configfs configfs: Fix race between create_link and configfs_rmdir 2017-06-26 07:13:08 +02:00
cramfs
crypto BACKPORT, FROMLIST: fscrypt: add Speck128/256 support 2018-06-11 15:59:44 +05:30
debugfs LSK 17.08 v4.4-android 2017-09-01 18:56:00 +08:00
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 osd fs: __r4w_get_page rely on PageUptodate for uptodate 2015-12-12 10:15:34 -08:00
exportfs
ext2 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-06-11 16:48:21 +05:30
ext4 UPSTREAM: ext4: fix check to prevent initializing reserved inodes 2018-08-17 10:34:02 +08:00
f2fs f2fs: modify f_blocks for statfs 2018-07-23 11:03:47 +08:00
fat fat: fix using uninitialized fields of fat_inode/fsinfo_inode 2017-03-15 09:57:15 +08:00
freevxfs
fscache fscache: Fix hanging wait on page discarded by writeback 2018-05-30 07:49:08 +02:00
fuse Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-07-05 11:05:40 +01:00
gfs2 gfs2: Fix fallocate chunk size 2018-05-30 07:49:13 +02:00
hfs
hfsplus hfsplus: stop workqueue when fill_super() failed 2018-05-26 08:49:01 +02:00
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: don't mark block as modified if the handle is out of credits 2018-07-11 16:03:48 +02:00
jffs2 jffs2: Fix use-after-free bug in jffs2_iget()'s error handling path 2018-05-30 07:48:54 +02:00
jfs do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:48:52 +02:00
kernfs kernfs: fix regression in kernfs_fop_write caused by wrong type 2018-02-16 20:09:42 +01:00
lockd lockd: lost rollback of set_grace_period() in lockd_down_net() 2018-05-26 08:48:50 +02:00
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: Fix possible 1-byte stack overflow in nfs_idmap_read_and_verify_message 2018-07-03 11:21:34 +02:00
nfs_common lockd: fix "list_add double add" caused by legacy signal interface 2018-02-03 17:04:28 +01:00
nfsd nfsd: restrict rd_maxcount to svc_max_payload in nfsd_encode_readdir 2018-07-03 11:21:33 +02:00
nilfs2 do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:48:52 +02:00
nls
notify Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-05-20 13:36:03 +05:30
ntfs mm, fs: introduce mapping_gfp_constraint() 2015-11-06 17:50:42 -08:00
ocfs2 ocfs2: subsystem.su_mutex is required while accessing the item->ci_parent 2018-07-22 14:25:52 +02:00
omfs
openpromfs
overlayfs ovl: filter trusted xattr for non-admin 2018-04-13 19:50:14 +02:00
proc LSK 18.06 v4.4-android 2018-07-06 20:12:54 +08:00
pstore pstore/console: ignore log level 2017-11-15 14:48:58 +08:00
qnx4
qnx6
quota quota: Check for register_shrinker() failure. 2018-02-03 17:04:28 +01:00
ramfs mm, fs: obey gfp_mapping for add_to_page_cache() 2015-10-16 11:42:28 -07:00
reiserfs do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:48:52 +02:00
romfs romfs: use different way to generate fsid for BLOCK or MTD 2017-06-17 06:39:38 +02:00
sdcardfs ANDROID: sdcardfs: fix potential crash when reserved_mb is not zero 2018-07-19 21:59:20 +05:30
squashfs UPSTREAM: squashfs: Add zstd support 2018-04-25 16:21:55 +08:00
sysfs sysfs: be careful of error returns from ops->show() 2017-04-12 12:38:33 +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: Fix potential integer overflow in allocation 2018-07-03 11:21:32 +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 ANDROID: vfs: user permission2 in notify_change2 2017-04-10 13:12:16 +05:30
bad_inode.c
binfmt_aout.c
binfmt_elf.c UPSTREAM: ELF: Also pass any interpreter's file header to `arch_check_elf' 2018-03-05 21:56:13 +05:30
binfmt_elf_fdpic.c libnvdimm for 4.4: 2015-11-10 12:07:22 -08:00
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.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
coredump.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-07-18 14:31:54 +08:00
dax.c dax: disable pmd mappings 2015-11-16 23:54:45 -08:00
dcache.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-06-11 16:48:21 +05:30
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 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-09-08 12:02:15 +08:00
exec.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-07-22 12:02:06 +08:00
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.c vfs: clear remainder of 'full_fds_bits' in dup_fd() 2015-11-05 23:05:32 -08:00
file_table.c
filesystems.c
fs-writeback.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-05-20 13:36:03 +05:30
fs_pin.c
fs_struct.c ANDROID: fs: Export free_fs_struct and set_fs_pwd 2017-02-03 15:05:18 +05:30
inode.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-07-18 13:38:21 +01:00
internal.h ANDROID: vfs: Allow filesystems to access their private mount data 2017-02-03 14:16:53 +05:30
ioctl.c
Kconfig f2fs: backport from (4c1fad64 - Merge tag 'for-f2fs-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs) 2017-10-15 23:28:17 +05:30
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 f2fs: backport from (4c1fad64 - Merge tag 'for-f2fs-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs) 2017-10-15 23:28:17 +05:30
mbcache.c
mbcache2.c BACKPORT: [UPSTREAM] mbcache2: reimplement mbcache 2017-05-01 15:05:27 +05:30
mount.h mnt: In propgate_umount handle visiting mounts in any order 2017-07-21 07:44:57 +02:00
mpage.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-07-11 16:22:22 +08:00
namei.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-05-20 13:36:03 +05:30
namespace.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-05-20 13:36:03 +05:30
no-block.c
nsfs.c nsfs: mark dentry with DCACHE_RCUACCESS 2018-02-16 20:09:43 +01:00
open.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-07-18 14:31:54 +08:00
pipe.c pipe: cap initial pipe capacity according to pipe-max-size limit 2018-05-26 08:48:51 +02:00
pnode.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-07-22 12:02:06 +08:00
pnode.h Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-05-04 12:01:39 +08:00
posix_acl.c tmpfs: clear S_ISGID when setting posix ACLs 2017-01-26 08:23:47 +01:00
proc_namespace.c ANDROID: vfs: Allow filesystems to access their private mount data 2017-02-03 14:16:53 +05:30
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 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-02-01 12:02:38 +08:00
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 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-03-05 20:20:17 +05:30
sync.c ANDROID: sched: add a counter to track fsync 2017-04-10 13:12:16 +05:30
timerfd.c timerfd: Protect the might cancel mechanism proper 2017-05-08 07:46:01 +02:00
userfaultfd.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-12-21 12:06:53 +08:00
utimes.c ANDROID: vfs: Add setattr2 for filesystems with per mount permissions 2017-02-03 15:04:29 +05:30
xattr.c ANDROID: xattr: Pass EOPNOTSUPP to permission2 2018-03-05 21:51:20 +05:30