linux-mainline/fs
Dave Chinner 5750676b64 fs/remap: constrain dedupe of EOF blocks
If dedupe of an EOF block is not constrainted to match against only
other EOF blocks with the same EOF offset into the block, it can
match against any other block that has the same matching initial
bytes in it, even if the bytes beyond EOF in the source file do
not match.

Fix this by constraining the EOF block matching to only match
against other EOF blocks that have identical EOF offsets and data.
This allows "whole file dedupe" to continue to work without allowing
eof blocks to randomly match against partial full blocks with the
same data.

Reported-by: Ansgar Lößer <ansgar.loesser@tu-darmstadt.de>
Fixes: 1383a7ed67 ("vfs: check file ranges before cloning files")
Link: https://lore.kernel.org/linux-fsdevel/a7c93559-4ba1-df2f-7a85-55a143696405@tu-darmstadt.de/
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-07-13 10:28:16 -07:00
..
9p 9p: fix EBADF errors in cached mode 2022-06-17 06:03:30 +09:00
adfs
affs
afs afs: Fix dynamic root getattr 2022-06-21 11:47:30 -05:00
autofs
befs
bfs
btrfs for-5.19-rc6-tag 2022-07-11 14:41:44 -07:00
cachefiles cachefiles: narrow the scope of flushed requests when releasing fd 2022-07-05 16:12:21 +01:00
ceph ceph: wait on async create before checking caps for syncfs 2022-06-29 18:02:57 +02:00
cifs cifs: update cifs_ses::ip_addr after failover 2022-06-24 13:34:28 -05:00
coda
configfs
cramfs
crypto
debugfs
devpts
dlm
ecryptfs
efivarfs
efs
erofs Changes since last update: 2022-06-01 11:54:29 -07:00
exfat exfat: use updated exfat_chain directly during renaming 2022-06-09 21:26:32 +09:00
exportfs
ext2 ext2: fix fs corruption when trying to remove a non-empty directory with IO error 2022-06-16 10:55:45 +02:00
ext4 ext4: fix a doubled word "need" in a comment 2022-06-18 19:36:20 -04:00
f2fs f2fs: do not count ENOENT for error case 2022-06-21 08:29:56 -07:00
fat Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
freevxfs SPDX changes for 5.19-rc1 2022-06-03 10:34:34 -07:00
fscache fscache: Fix invalidation/lookup race 2022-07-05 16:12:55 +01:00
fuse libnvdimm for 5.19 2022-05-27 15:49:30 -07:00
gfs2
hfs
hfsplus
hostfs
hpfs
hugetlbfs hugetlbfs: zero partial pages during fallocate hole punch 2022-06-16 19:11:32 -07:00
iomap
isofs
jbd2 fs: fix jbd2_journal_try_to_free_buffers() kernel-doc comment 2022-06-16 10:36:09 -04:00
jffs2 This pull request contains fixes for JFFS2, UBI and UBIFS 2022-06-03 14:42:24 -07:00
jfs JFS: One bug fix and some code cleanup 2022-05-27 15:59:21 -07:00
kernfs
ksmbd vfs: fix copy_file_range() regression in cross-fs copies 2022-06-30 15:16:38 -07:00
lockd
minix
netfs netfs: Rename the netfs_io_request cleanup op and give it an op pointer 2022-06-10 20:55:21 +01:00
nfs NFSv4: Add an fattr allocation to _nfs4_discover_trunking() 2022-06-30 16:13:00 -04:00
nfs_common
nfsd Notable regression fixes: 2022-07-02 11:20:56 -07:00
nilfs2 nilfs2: fix incorrect masking of permission flags for symlinks 2022-07-03 15:42:33 -07:00
nls
notify fanotify: refine the validation checks on non-dir inode mask 2022-06-28 11:18:13 +02:00
ntfs Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
ntfs3 Ntfs3 for 5.19 2022-06-03 16:57:16 -07:00
ocfs2 Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
omfs
openpromfs
orangefs
overlayfs ovl: turn of SB_POSIXACL with idmapped layers temporarily 2022-07-08 15:48:31 +02:00
proc Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
pstore
qnx4
qnx6
quota quota: Prevent memory allocation recursion while holding dq_lock 2022-06-06 10:08:10 +02:00
ramfs
reiserfs
romfs
smbfs_common
squashfs
sysfs
sysv Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
tracefs tracefs: Fix syntax errors in comments 2022-06-17 19:01:28 -04:00
ubifs This pull request contains fixes for JFFS2, UBI and UBIFS 2022-06-03 14:42:24 -07:00
udf
ufs
unicode
vboxsf
verity
xfs xfs: prevent a UAF when log IO errors race with unmount 2022-07-01 09:09:52 -07:00
zonefs zonefs: fix zonefs_iomap_begin() for reads 2022-06-08 19:13:55 +09:00
aio.c
anon_inodes.c
attr.c fs: account for group membership 2022-06-14 12:18:47 +02:00
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c
binfmt_elf_test.c
binfmt_elf.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
buffer.c
char_dev.c
compat_binfmt_elf.c
coredump.c
d_path.c
dax.c libnvdimm for 5.19 2022-05-27 15:49:30 -07:00
dcache.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c fix race between exit_itimers() and /proc/pid/timers 2022-07-11 09:52:59 -07:00
fcntl.c
fhandle.c
file_table.c Descriptor handling cleanups 2022-06-04 18:52:00 -07:00
file.c fix the breakage in close_fd_get_file() calling conventions change 2022-06-05 15:03:03 -04:00
filesystems.c
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c writeback: Fix inode->i_io_list not be protected by inode->i_lock error 2022-06-06 09:54:30 +02:00
fsopen.c
init.c
inode.c writeback: Fix inode->i_io_list not be protected by inode->i_lock error 2022-06-06 09:54:30 +02:00
internal.h Cleanups (and one fix) around struct mount handling. 2022-06-04 19:00:05 -07:00
io_uring.c io_uring: check that we have a file table when allocating update slots 2022-07-09 07:02:10 -06:00
io-wq.c
io-wq.h
ioctl.c
Kconfig
Kconfig.binfmt m68knommu: changes for linux 5.19 2022-05-30 10:56:18 -07:00
kernel_read_file.c
libfs.c
locks.c
Makefile
mbcache.c
mount.h
mpage.c
namei.c Several cleanups in fs/namei.c. 2022-06-04 19:07:15 -07:00
namespace.c Cleanups (and one fix) around struct mount handling. 2022-06-04 19:00:05 -07:00
no-block.c
nsfs.c
open.c RISC-V Patches for the 5.19 Merge Window, Part 1 2022-05-31 14:10:54 -07:00
pipe.c Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c vfs: fix copy_file_range() regression in cross-fs copies 2022-06-30 15:16:38 -07:00
readdir.c
remap_range.c fs/remap: constrain dedupe of EOF blocks 2022-07-13 10:28:16 -07:00
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c RISC-V Patches for the 5.19 Merge Window, Part 1 2022-05-31 14:10:54 -07:00
statfs.c
super.c
sync.c
sysctls.c
timerfd.c
userfaultfd.c
utimes.c
xattr.c