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Darrick J. Wong 81a448d7b0 xfs: prevent spoofing of rtbitmap blocks when recovering buffers 
While reviewing the buffer item recovery code, the thought occurred to
me: in V5 filesystems we use log sequence number (LSN) tracking to avoid
replaying older metadata updates against newer log items.  However, we
use the magic number of the ondisk buffer to find the LSN of the ondisk
metadata, which means that if an attacker can control the layout of the
realtime device precisely enough that the start of an rt bitmap block
matches the magic and UUID of some other kind of block, they can control
the purported LSN of that spoofed block and thereby break log replay.

Since realtime bitmap and summary blocks don't have headers at all, we
have no way to tell if a block really should be replayed.  The best we
can do is replay unconditionally and hope for the best.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-07-29 09:27:29 -07:00
..
9p 9p for 5.13-rc1 2021-05-07 11:18:52 -07:00
adfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
affs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
afs netfslib fixes 2021-06-25 09:41:29 -07:00
autofs autofs: should_expire() argument is guaranteed to be positive 2021-03-24 14:14:27 -04:00
befs fs/befs: Delete obsolete TODO file 2021-03-30 16:54:49 -07:00
bfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
btrfs Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:30:04 -07:00
cachefiles fscache, cachefiles: Add alternate API to use kiocb for read/write to cache 2021-04-23 10:14:32 +01:00
ceph ceph: take reference to req->r_parent at point of assignment 2021-06-29 00:15:52 +02:00
cifs cifs: update internal version number 2021-07-09 13:03:36 -05:00
coda coda: fix reference counting in coda_file_mmap error path 2021-04-23 14:42:39 -07:00
configfs configfs updates for Linux 5.13 2021-07-02 14:13:21 -07:00
cramfs cramfs: use %pD instead of messing with file_dentry()->d_name 2021-01-05 23:02:47 -05:00
crypto fscrypt: fix derivation of SipHash keys on big endian CPUs 2021-06-05 00:52:52 -07:00
debugfs Linux 5.13-rc6 2021-06-14 09:07:45 +02:00
devpts
dlm fs: dlm: invalid buffer access in lookup error 2021-06-11 12:44:47 -05:00
ecryptfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
efivarfs efivars: convert to fileattr 2021-04-12 15:04:29 +02:00
efs
erofs erofs: clean up file headers & footers 2021-06-08 00:41:24 +08:00
exfat Description for this pull request: 2021-07-06 11:06:04 -07:00
exportfs
ext2 fs: remove noop_set_page_dirty() 2021-06-29 10:53:48 -07:00
ext4 Ext4 regression and bug fixes for v5.14-rc1 2021-07-09 09:57:27 -07:00
f2fs f2fs: drop dirty node pages when cp is in error status 2021-07-06 22:05:06 -07:00
fat mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
freevxfs
fscache fscache, cachefiles: Add alternate API to use kiocb for read/write to cache 2021-04-23 10:14:32 +01:00
fuse fuse update for 5.14 2021-07-06 11:17:41 -07:00
gfs2 Various minor gfs2 cleanups and fixes 2021-06-29 20:23:08 -07:00
hfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
hfsplus hfsplus: report create_date to kstat.btime 2021-07-01 11:06:06 -07:00
hostfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-05-02 09:14:01 -07:00
hpfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
hugetlbfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-06-28 20:39:26 -07:00
iomap Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:30:04 -07:00
isofs isofs: remove redundant continue statement 2021-06-17 17:11:42 +02:00
jbd2 ext4: inline jbd2_journal_[un]register_shrinker() 2021-07-08 08:37:31 -04:00
jffs2 This pull request contains changes for JFFS2, UBI and UBIFS 2021-05-04 18:08:40 -07:00
jfs JFS fixes for 5.14 2021-07-02 14:25:17 -07:00
kernfs Driver core changes for 5.14-rc1 2021-07-05 13:51:41 -07:00
lockd lockd: Update the NLMv4 SHARE results encoder to use struct xdr_stream 2021-07-06 20:14:44 -04:00
minix mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
netfs netfs: fix test for whether we can skip read when writing beyond EOF 2021-06-21 21:24:07 +01:00
nfs NFS client updates for Linux 5.14 2021-07-09 09:43:57 -07:00
nfs_common nfs_common: fix doc warning 2021-07-06 20:14:41 -04:00
nfsd block-5.14-2021-07-08 2021-07-09 12:05:33 -07:00
nilfs2 Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
nls
notify fanotify: fix copy_event_to_user() fid error clean up 2021-06-14 12:16:37 +02:00
ntfs Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:30:04 -07:00
ocfs2 In addition to bug fixes and cleanups, there are two new features for 2021-06-30 19:37:39 -07:00
omfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
openpromfs openpromfs: don't do unlock_new_inode() until the new inode is set up 2021-03-12 22:15:22 -05:00
orangefs orangefs: fix orangefs df output. 2021-06-28 08:40:08 -04:00
overlayfs overlayfs update for 5.13 2021-04-30 15:17:08 -07:00
proc Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:41:14 -07:00
pstore for-5.14/drivers-2021-06-29 2021-06-30 12:21:16 -07:00
qnx4
qnx6
quota quota: remove unnecessary oom message 2021-06-22 10:40:52 +02:00
ramfs fs: move ramfs_aops to libfs 2021-06-29 10:53:48 -07:00
reiserfs \n 2021-07-01 12:06:39 -07:00
romfs
squashfs squashfs: add option to panic on errors 2021-06-29 10:53:46 -07:00
sysfs sysfs: Support zapping of binary attr mmaps 2021-01-12 14:26:31 +01:00
sysv mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
tracefs tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
ubifs ubifs: Set/Clear I_LINKABLE under i_lock for whiteout inode 2021-06-22 09:21:39 +02:00
udf \n 2021-07-01 12:06:39 -07:00
ufs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
unicode .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
vboxsf vboxsf: don't allow to change the inode type 2021-03-12 22:15:00 -05:00
verity fsverity: relax build time dependency on CRYPTO_SHA256 2021-04-22 17:31:32 +10:00
xfs xfs: prevent spoofing of rtbitmap blocks when recovering buffers 2021-07-29 09:27:29 -07:00
zonefs mm: move page dirtying prototypes from mm.h 2021-06-29 10:53:48 -07:00
aio.c Revert "mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio" 2021-04-30 11:20:39 -07:00
anon_inodes.c fs: anon_inodes: rephrase to appropriate kernel-doc 2021-01-15 12:17:25 -05:00
attr.c ima: handle idmapped mounts 2021-01-24 14:27:20 +01:00
bad_inode.c fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
binfmt_aout.c binfmt: remove in-tree usage of MAP_EXECUTABLE 2021-06-29 10:53:50 -07:00
binfmt_elf.c Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
binfmt_elf_fdpic.c Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
binfmt_em86.c
binfmt_flat.c binfmt: remove in-tree usage of MAP_EXECUTABLE 2021-06-29 10:53:50 -07:00
binfmt_misc.c binfmt_misc: fix possible deadlock in bm_register_write 2021-03-13 11:27:30 -08:00
binfmt_script.c
block_dev.c Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
buffer.c mm/writeback: move __set_page_dirty() to core mm 2021-06-29 10:53:48 -07:00
char_dev.c
compat_binfmt_elf.c get rid of COMPAT_ELF_EXEC_PAGESIZE 2021-01-06 08:42:51 -05:00
coredump.c Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:41:14 -07:00
d_path.c getcwd(2): clean up error handling 2021-05-18 20:15:58 -04:00
dax.c dax: fix ENOMEM handling in grab_mapping_entry() 2021-06-29 10:53:47 -07:00
dcache.c useful constants: struct qstr for ".." 2021-04-15 22:36:45 -04:00
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-09 14:54:23 -07:00
drop_caches.c
eventfd.c
eventpoll.c fs/epoll: restore waking from ep_done_scan() 2021-05-06 19:24:13 -07:00
exec.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
fcntl.c idmapped-mounts-v5.12 2021-02-23 13:39:45 -08:00
fhandle.c switch file_open_root() to struct path 2021-04-07 13:56:43 -04:00
file.c Merge branch 'work.file' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-05-03 11:05:28 -07:00
file_table.c
filesystems.c
fs-writeback.c \n 2021-07-01 12:06:39 -07:00
fs_context.c
fs_parser.c vfs: fs_parser: clean up kernel-doc warnings 2021-04-30 11:20:35 -07:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c init: handle idmapped mounts 2021-01-24 14:27:19 +01:00
inode.c mm: remove nrexceptional from inode: remove BUG_ON 2021-05-05 11:27:20 -07:00
internal.h switch file_open_root() to struct path 2021-04-07 13:56:43 -04:00
io-wq.c io_uring: fix false WARN_ONCE 2021-06-18 09:22:02 -06:00
io-wq.h io_uring: move creds from io-wq work to io_kiocb 2021-06-18 09:22:02 -06:00
io_uring.c io_uring: remove dead non-zero 'poll' check 2021-07-09 08:20:28 -06:00
ioctl.c vfs: add fileattr ops 2021-04-12 15:04:23 +02:00
Kconfig mm: hugetlb: introduce CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON 2021-06-30 20:47:26 -07:00
Kconfig.binfmt binfmt_flat: allow not offsetting data start 2021-04-19 09:56:37 +10:00
kernel_read_file.c switch file_open_root() to struct path 2021-04-07 13:56:43 -04:00
libfs.c fs: remove noop_set_page_dirty() 2021-06-29 10:53:48 -07:00
locks.c Additional fixes and clean-ups for NFSD since tags/nfsd-5.13, 2021-05-05 13:44:19 -07:00
Makefile netfs: Provide readahead and readpage netfs helpers 2021-04-23 10:14:32 +01:00
mbcache.c
mount.h mount: make {lock,unlock}_mount_hash() static 2021-01-24 14:29:34 +01:00
mpage.c block: rename BIO_MAX_PAGES to BIO_MAX_VECS 2021-03-11 07:47:48 -07:00
namei.c Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:41:14 -07:00
namespace.c mount: Support "nosymfollow" in new mount api 2021-06-01 12:09:27 +02:00
no-block.c
nsfs.c
open.c Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:41:14 -07:00
pipe.c fs: delete repeated words in comments 2021-02-24 13:38:26 -08:00
pnode.c
pnode.h mount: fix mounting of detached mounts onto targets that reside on shared mounts 2021-03-08 15:18:43 +01:00
posix_acl.c fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
proc_namespace.c fs: introduce MOUNT_ATTR_IDMAP 2021-01-24 14:43:45 +01:00
read_write.c teach sendfile(2) to handle send-to-pipe directly 2021-01-25 23:29:36 -05:00
readdir.c readdir: make sure to verify directory entry for legacy interfaces too 2021-04-17 11:39:49 -07:00
remap_range.c ioctl: handle idmapped mounts 2021-01-24 14:27:19 +01:00
select.c kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() 2021-03-16 22:13:10 +01:00
seq_file.c seq_file: drop unused *_escape_mem_ascii() 2021-07-01 11:06:05 -07:00
signalfd.c signalfd: Remove SIL_PERF_EVENT fields from signalfd_siginfo 2021-05-18 16:20:54 -05:00
splice.c for-5.12/block-2021-02-17 2021-02-21 11:02:48 -08:00
stack.c
stat.c fs: fix reporting supported extra file attributes for statx() 2021-04-17 23:03:50 -04:00
statfs.c s390,alpha: switch to 64-bit ino_t 2021-02-13 17:17:53 +01:00
super.c block: move bd_mutex to struct gendisk 2021-06-01 07:44:32 -06:00
sync.c
timerfd.c
userfaultfd.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
utimes.c utimes: handle idmapped mounts 2021-01-24 14:27:18 +01:00
xattr.c xattr: fix kernel-doc for mnt_userns and vfs xattr helpers 2021-03-23 11:20:26 +01:00