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Gao Xiang 893e5e9b73 erofs: fix uninitialized page cache reported by KMSAN 
syzbot reports a KMSAN reproducer [1] which generates a crafted
filesystem image and causes IMA to read uninitialized page cache.

Later, (rq->outputsize > rq->inputsize) will be formally supported
after either large uncompressed pclusters (> block size) or big
lclusters are landed.  However, currently there is no way to generate
such filesystems by using mkfs.erofs.

Thus, let's mark this condition as unsupported for now.

[1] https://lore.kernel.org/r/0000000000002be12a0611ca7ff8@google.com

Reported-and-tested-by: syzbot+7bc44a489f0ef0670bd5@syzkaller.appspotmail.com
Fixes: 1ca01520148a ("erofs: refine z_erofs_transform_plain() for sub-page block support")
Reviewed-by: Sandeep Dhavale <dhavale@google.com>
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240304035339.425857-1-hsiangkao@linux.alibaba.com
2024-03-07 10:21:00 +08:00
..
9p
9p: Use length of data written to the server in preference to error
2024-01-04 13:15:31 +00:00
adfs
adfs: remove writepage implementation
2023-12-29 11:58:33 -08:00
affs
affs: free affs_sb_info with kfree_rcu()
2024-02-25 02:10:31 -05:00
afs
afs: Fix endless loop in directory parsing
2024-02-27 11:20:43 +01:00
autofs
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
bcachefs
bcachefs: fix bch2_save_backtrace()
2024-02-25 15:45:36 -05:00
befs
befs: d_obtain_alias(ERR_PTR(...)) will do the right thing
2023-12-21 12:51:02 -05:00
bfs
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
btrfs
for-6.8-rc6-tag
2024-03-01 12:29:20 -08:00
cachefiles
cachefiles: fix memory leak in cachefiles_add_cache()
2024-02-20 09:46:07 +01:00
ceph
ceph: switch to corrected encoding of max_xattr_size in mdsmap
2024-02-26 19:20:30 +01:00
coda
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
configfs
…
cramfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
crypto
fscrypt: document that CephFS supports fscrypt now
2023-12-26 22:55:42 -06:00
debugfs
Merge branches 'acpi-pm', 'acpi-video', 'acpi-apei' and 'acpi-extlog'
2024-01-04 13:19:40 +01:00
devpts
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
dlm
dlm: update format header reflect current format
2023-12-20 15:36:48 -06:00
ecryptfs
fix directory locking scheme on rename
2024-01-11 20:00:22 -08:00
efivarfs
efivarfs: Drop 'duplicates' bool parameter on efivar_init()
2024-02-25 09:43:39 +01:00
efs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
erofs
erofs: fix uninitialized page cache reported by KMSAN
2024-03-07 10:21:00 +08:00
exfat
Description for this pull request:
2024-03-01 12:22:30 -08:00
exportfs
fs: fix build error with CONFIG_EXPORTFS=m or not defined
2023-10-28 16:16:19 +02:00
ext2
fix directory locking scheme on rename
2024-01-11 20:00:22 -08:00
ext4
We still have some races in filesystem methods when exposed to RCU
2024-02-25 09:29:05 -08:00
f2fs
f2fs: fix double free of f2fs_sb_info
2024-01-12 18:55:09 -08:00
fat
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
freevxfs
freevxfs: lookup: fix function params kernel-doc
2023-12-20 15:02:58 -08:00
fuse
fuse: fix UAF in rcu pathwalks
2024-02-25 02:10:32 -05:00
gfs2
Revert "gfs2: Use GL_NOBLOCK flag for non-blocking lookups"
2024-02-02 17:21:44 +01:00
hfs
hfs: really remove hfs_writepage
2023-12-29 11:58:34 -08:00
hfsplus
hfsplus: switch to rcu-delayed unloading of nls and freeing ->s_fs_info
2024-02-25 02:10:31 -05:00
hostfs
hostfs: use d_splice_alias() calling conventions to simplify failure exits
2023-12-21 12:51:00 -05:00
hpfs
…
hugetlbfs
fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super
2024-02-07 21:20:36 -08:00
iomap
mm: add folio_fill_tail() and use it in iomap
2023-12-10 16:51:36 -08:00
isofs
…
jbd2
jbd2: abort journal when detecting metadata writeback error of fs dev
2024-01-04 23:42:21 -05:00
jffs2
jffs2: mark __jffs2_dbg_superblock_counts() static
2023-12-10 17:21:43 -08:00
jfs
Revert "jfs: fix shift-out-of-bounds in dbJoin"
2024-01-29 08:45:10 -06:00
kernfs
Revert "kernfs: convert kernfs_idr_lock to an irq safe raw spinlock"
2024-01-11 11:51:27 +01:00
lockd
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
minix
minixfs kmap_local_page() switchover and related fixes - very similar to sysv series.
2024-01-11 19:54:18 -08:00
netfs
netfs: Fix missing zero-length check in unbuffered write
2024-01-29 14:53:21 +01:00
nfs
nfs: fix UAF on pathwalk running into umount
2024-02-25 02:10:32 -05:00
nfs_common
…
nfsd
nfsd-6.8 fixes:
2024-02-07 17:48:15 +00:00
nilfs2
nilfs2: fix potential bug in end_buffer_async_write
2024-02-07 21:20:37 -08:00
nls
…
notify
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
ntfs
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
ntfs3
fs/ntfs3: fix build without CONFIG_NTFS3_LZX_XPRESS
2024-02-26 09:32:23 -08:00
ocfs2
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
omfs
…
openpromfs
…
orangefs
orangefs: saner arguments passing in readdir guts
2023-12-21 12:53:36 -05:00
overlayfs
vfs-6.8-rc5.fixes
2024-02-12 07:15:45 -08:00
proc
We still have some races in filesystem methods when exposed to RCU
2024-02-25 09:29:05 -08:00
pstore
pstore: inode: Use cleanup.h for struct pstore_private
2023-12-08 14:15:44 -08:00
qnx4
qnx4: Use get_directory_fname() in qnx4_match()
2023-12-13 11:19:18 -08:00
qnx6
…
quota
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
ramfs
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
2024-01-08 15:27:15 -08:00
reiserfs
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
romfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
smb
We still have some races in filesystem methods when exposed to RCU
2024-02-25 09:29:05 -08:00
squashfs
Squashfs: fix variable overflow triggered by sysbot
2023-12-10 17:21:26 -08:00
sysfs
fs/sysfs/dir.c : Fix typo in comment
2023-12-07 11:35:23 +09:00
sysv
sysv: remove writepage implementation
2023-12-29 11:58:35 -08:00
tracefs
eventfs: Keep all directory links at 1
2024-02-01 11:53:53 -05:00
ubifs
ubifs: fix kernel-doc warnings
2024-01-06 23:49:50 +01:00
udf
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
ufs
Many singleton patches against the MM code. The patch series which
2024-01-09 11:18:47 -08:00
unicode
…
vboxsf
fs: vboxsf: fix a kernel-doc warning
2023-12-08 15:32:31 -07:00
verity
Networking changes for 6.8.
2024-01-11 10:07:29 -08:00
xfs
xfs: drop experimental warning for FSDAX
2024-02-27 09:53:30 +05:30
zonefs
zonefs: Improve error handling
2024-02-16 10:20:35 +09:00
aio.c
fs/aio: Make io_cancel() generate completions again
2024-02-27 11:20:44 +01:00
anon_inodes.c
Merge branch 'kvm-guestmemfd' into HEAD
2023-11-14 08:31:31 -05:00
attr.c
fs: fix doc comment typo fs tree wide
2023-12-21 13:17:54 +01:00
backing-file.c
fs: factor out backing_file_mmap() helper
2023-12-23 16:35:09 +02:00
bad_inode.c
…
binfmt_elf_fdpic.c
execve updates for v6.7-rc1
2023-10-30 19:28:19 -10:00
binfmt_elf_test.c
…
binfmt_elf.c
…
binfmt_flat.c
…
binfmt_misc.c
execve updates for v6.7-rc1
2023-10-30 19:28:19 -10:00
binfmt_script.c
…
buffer.c
Many singleton patches against the MM code. The patch series which
2024-01-09 11:18:47 -08:00
char_dev.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
compat_binfmt_elf.c
…
coredump.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
d_path.c
…
dax.c
fs : Fix warning using plain integer as NULL
2023-11-18 15:00:01 +01:00
dcache.c
Revert "get rid of DCACHE_GENOCIDE"
2024-02-09 23:31:16 -05:00
direct-io.c
fs : Fix warning using plain integer as NULL
2023-11-18 15:00:01 +01:00
drop_caches.c
…
eventfd.c
eventfd: Remove usage of the deprecated ida_simple_xx() API
2023-12-12 14:24:55 +01:00
eventpoll.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
exec.c
execve fixes for v6.8-rc2
2024-01-24 13:32:29 -08:00
fcntl.c
…
fhandle.c
exportfs: add helpers to check if filesystem can encode/decode file handles
2023-10-24 17:57:45 +02:00
file_table.c
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
file.c
file: remove __receive_fd()
2023-12-12 14:24:14 +01:00
filesystems.c
…
fs_context.c
…
fs_parser.c
…
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
netfs: Move pinning-for-writeback from fscache to netfs
2023-12-24 15:08:49 +00:00
fsopen.c
…
init.c
…
inode.c
fix directory locking scheme on rename
2024-01-11 20:00:22 -08:00
internal.h
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
ioctl.c
lsm: new security_file_ioctl_compat() hook
2023-12-24 15:48:03 -05:00
Kconfig
vfs-6.8.netfs
2024-01-19 09:10:23 -08:00
Kconfig.binfmt
…
kernel_read_file.c
…
libfs.c
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
locks.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
Makefile
vfs-6.8.netfs
2024-01-19 09:10:23 -08:00
mbcache.c
…
mnt_idmapping.c
mnt_idmapping: decouple from namespaces
2023-11-28 14:08:47 +01:00
mount.h
mounts: keep list of mounts in an rbtree
2023-11-18 14:56:16 +01:00
mpage.c
fs: convert block_write_full_page to block_write_full_folio
2023-12-29 11:58:35 -08:00
namei.c
rcu pathwalk: prevent bogus hard errors from may_lookup()
2024-02-25 02:10:31 -05:00
namespace.c
fs: relax mount_setattr() permission checks
2024-02-07 21:16:29 +01:00
nsfs.c
nsfs: use d_make_root()
2023-11-25 02:49:43 -05:00
open.c
vfs-6.8.rw
2024-01-08 11:11:51 -08:00
pipe.c
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
pnode.c
mounts: keep list of mounts in an rbtree
2023-11-18 14:56:16 +01:00
pnode.h
…
posix_acl.c
fs: fix doc comment typo fs tree wide
2023-12-21 13:17:54 +01:00
proc_namespace.c
namespace: extract show_path() helper
2023-11-18 14:56:16 +01:00
read_write.c
fsnotify: optionally pass access range in file permission hooks
2023-12-12 16:20:02 +01:00
readdir.c
fsnotify: optionally pass access range in file permission hooks
2023-12-12 16:20:02 +01:00
remap_range.c
remap_range: merge do_clone_file_range() into vfs_clone_file_range()
2024-02-06 17:07:21 +01:00
select.c
…
seq_file.c
…
signalfd.c
…
splice.c
fs: use splice_copy_file_range() inline helper
2023-12-12 16:20:02 +01:00
stack.c
…
stat.c
vfs-6.8.mount
2024-01-08 10:57:34 -08:00
statfs.c
…
super.c
fs/super.c: don't drop ->s_user_ns until we free struct super_block itself
2024-02-25 02:10:31 -05:00
sync.c
…
sysctls.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
timerfd.c
…
userfaultfd.c
Generic:
2024-01-17 13:03:37 -08:00
utimes.c
…
xattr.c
…