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Siddh Raman Pant 2144859229 erofs/zmap.c: Fix incorrect offset calculation 
[ Upstream commit 6acd87d50998ef0afafc441613aeaf5a8f5c9eff ]

Effective offset to add to length was being incorrectly calculated,
which resulted in iomap->length being set to 0, triggering a WARN_ON
in iomap_iter_done().

Fix that, and describe it in comments.

This was reported as a crash by syzbot under an issue about a warning
encountered in iomap_iter_done(), but unrelated to erofs.

C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000
Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02
Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6

Reported-by: syzbot+a8e049cd3abd342936b6@syzkaller.appspotmail.com
Suggested-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Siddh Raman Pant <code@siddh.me>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20221209102151.311049-1-code@siddh.me
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-06 07:59:00 +01:00
..
9p
9p: fix a bunch of checkpatch warnings
2022-08-17 14:24:07 +02:00
adfs
…
affs
affs: initialize fsdata in affs_truncate()
2023-02-01 08:27:06 +01:00
afs
afs: Fix lost servers_outstanding count
2022-12-31 13:14:45 +01:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
bfs
…
btrfs
btrfs: fix race between quota rescan and disable leading to NULL pointer deref
2023-01-24 07:22:46 +01:00
cachefiles
fs: add is_idmapped_mnt() helper
2022-07-02 16:41:14 +02:00
ceph
ceph: switch to vfs_inode_has_locks() to fix file lock bug
2023-01-12 11:59:14 +01:00
cifs
cifs: Fix oops due to uncleared server->smbd_conn in reconnect
2023-02-01 08:27:23 +01:00
coda
…
configfs
configfs: fix possible memory leak in configfs_create_dir()
2022-12-31 13:14:15 +01:00
cramfs
…
crypto
fscrypt: fix keyring memory leak on mount failure
2022-11-10 18:15:37 +01:00
debugfs
debugfs: fix error when writing negative value to atomic_t debugfs file
2022-12-31 13:14:03 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:27:01 +01:00
dlm
fs: dlm: retry accept() until -EAGAIN or error returns
2023-01-12 11:58:51 +01:00
ecryptfs
fs: add is_idmapped_mnt() helper
2022-07-02 16:41:14 +02:00
efivarfs
…
efs
…
erofs
erofs/zmap.c: Fix incorrect offset calculation
2023-02-06 07:59:00 +01:00
exfat
exfat: use updated exfat_chain directly during renaming
2022-07-29 17:25:30 +02:00
exportfs
exportfs: support idmapped mounts
2022-06-09 10:23:32 +02:00
ext2
ext2: Use kvmalloc() for group descriptor array
2022-10-26 12:35:51 +02:00
ext4
ext4: don't allow journal inode to have encrypt flag
2023-01-12 11:59:19 +01:00
f2fs
f2fs: let's avoid panic if extent_tree is not created
2023-01-24 07:22:42 +01:00
fat
fat: add ratelimit to fat*_ent_bread()
2022-06-09 10:22:42 +02:00
freevxfs
…
fscache
fscache: Remove an unused static variable
2021-10-04 22:13:12 +01:00
fuse
fuse: lock inode unconditionally in fuse_fallocate()
2022-12-02 17:41:11 +01:00
gfs2
gfs2: Switch from strlcpy to strscpy
2022-11-26 09:24:51 +01:00
hfs
hfs/hfsplus: avoid WARN_ON() for sanity check, use proper error handling
2023-01-12 11:59:19 +01:00
hfsplus
hfs/hfsplus: use WARN_ON for sanity check
2023-01-12 11:59:18 +01:00
hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
hpfs: use iomap_fiemap to implement ->fiemap
2021-07-27 11:00:36 +02:00
hugetlbfs
hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param()
2022-12-31 13:14:44 +01:00
iomap
iomap: iomap_write_failed fix
2022-06-09 10:22:55 +02:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-11-12 15:05:50 +01:00
jbd2
jbd2: add miss release buffer head in fc_do_one_pass()
2022-10-26 12:34:28 +02:00
jffs2
jffs2: fix memory leak in jffs2_do_fill_super
2022-06-14 18:36:10 +02:00
jfs
fs: jfs: fix shift-out-of-bounds in dbDiscardAG
2022-12-31 13:14:40 +01:00
kernfs
kernfs: fix use-after-free in __kernfs_remove
2022-11-03 23:59:13 +09:00
ksmbd
ksmbd: limit pdu length size according to connection status
2023-02-01 08:27:24 +01:00
lockd
lockd: set other missing fields when unlocking files
2022-12-31 13:14:05 +01:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-13 20:59:10 +02:00
netfs
netfs: fix parameter of cleanup()
2021-12-29 12:28:59 +01:00
nfs
pNFS/filelayout: Fix coalescing test for single DS
2023-01-24 07:22:41 +01:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
NFSD: fix use-after-free in nfsd4_ssc_setup_dul()
2023-02-01 08:27:07 +01:00
nilfs2
nilfs2: fix general protection fault in nilfs_btree_insert()
2023-01-24 07:22:42 +01:00
nls
…
notify
fsnotify: fix wrong lockdep annotations
2022-06-09 10:22:50 +02:00
ntfs
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-26 09:24:52 +01:00
ntfs3
fs/ntfs3: Fix attr_punch_hole() null pointer derenference
2023-01-24 07:22:48 +01:00
ocfs2
ocfs2: fix memory leak in ocfs2_stack_glue_init()
2022-12-31 13:14:02 +01:00
omfs
…
openpromfs
…
orangefs
orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init()
2022-12-31 13:14:44 +01:00
overlayfs
ovl: fail on invalid uid/gid mapping at copy up
2023-02-01 08:27:24 +01:00
proc
sysctl: add a new register_sysctl_init() interface
2023-02-01 08:27:19 +01:00
pstore
pstore/zone: Use GFP_ATOMIC to allocate zone buffer
2023-01-12 11:58:46 +01:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-21 08:36:48 -07:00
qnx6
…
quota
ext4: fix bug_on in __es_tree_search caused by bad quota inode
2023-01-12 11:59:01 +01:00
ramfs
…
reiserfs
fs: reiserfs: remove useless new_opts in reiserfs_remount
2023-02-01 08:27:19 +01:00
romfs
…
smbfs_common
cifs: Fix crash on unload of cifs_arc4.ko
2021-12-14 10:57:12 +01:00
squashfs
squashfs: use bvec_virt
2021-08-16 10:50:32 -06:00
sysfs
sysfs: Allow deferred execution of iomem_get_mapping()
2021-08-06 13:05:28 +02:00
sysv
fs: sysv: Fix sysv_nblocks() returns wrong value
2022-12-31 13:14:05 +01:00
tracefs
tracefs: Only clobber mode/uid/gid on remount if asked
2022-09-20 12:39:43 +02:00
ubifs
ubifs: rename_whiteout: correct old_dir size computing
2022-04-08 14:24:08 +02:00
udf
udf: Fix extension of the last extent in the file
2023-01-12 11:59:16 +01:00
ufs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
unicode
…
vboxsf
vboxfs: fix broken legacy mount signature checking
2021-09-27 11:26:21 -07:00
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-09-22 10:56:34 -07:00
xfs
fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE
2022-10-26 12:34:27 +02:00
zonefs
zonefs: Detect append writes at invalid locations
2023-01-24 07:22:42 +01:00
aio.c
aio: Fix incorrect usage of eventfd_signal_allowed()
2021-12-14 10:57:22 +01:00
anon_inodes.c
…
attr.c
vfs: Check the truncate maximum size in inode_newsize_ok()
2022-08-17 14:22:50 +02:00
bad_inode.c
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
binfmt: Fix error return code in load_elf_fdpic_binary()
2023-01-12 11:58:46 +01:00
binfmt_elf.c
fs/binfmt_elf: Fix memory leak in load_elf_binary()
2022-11-03 23:59:12 +09:00
binfmt_flat.c
binfmt_flat: do not stop relocating GOT entries prematurely on riscv
2022-06-09 10:22:26 +02:00
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2022-12-31 13:14:39 +01:00
binfmt_script.c
…
buffer.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-26 09:24:51 +01:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2022-12-31 13:14:30 +01:00
compat_binfmt_elf.c
…
coredump.c
coredump: Use the vma snapshot in fill_files_note
2022-04-08 14:24:18 +02:00
d_path.c
d_path: make 'prepend()' fill up the buffer exactly on overflow
2021-09-02 10:07:29 -07:00
dax.c
fsdax: Fix infinite loop in dax_iomap_rw()
2022-09-28 11:11:56 +02:00
dcache.c
…
direct-io.c
…
drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: provide a eventfd_signal_mask() helper
2023-01-24 07:22:43 +01:00
eventpoll.c
eventpoll: add EPOLL_URING_WAKE poll wakeup flag
2023-01-24 07:22:43 +01:00
exec.c
exec: Copy oldsighand->action under spin-lock
2022-11-03 23:59:12 +09:00
fcntl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fhandle.c
…
file_table.c
locks: fix TOCTOU race when granting write lease
2022-10-26 12:34:58 +02:00
file.c
fs: use acquire ordering in __fget_light()
2022-12-14 11:37:15 +01:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
vfs: fs_context: fix up param length parsing in legacy_parse_param
2022-01-20 09:13:14 +01:00
fs_parser.c
namei: Standardize callers of filename_lookup()
2021-09-07 16:07:47 -04:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
fs: do not update freeing inode i_io_list
2022-12-02 17:41:07 +01:00
fsopen.c
…
init.c
…
inode.c
fs: fix UAF/GPF bug in nilfs_mdt_destroy
2022-10-12 09:53:26 +02:00
internal.h
locks: fix TOCTOU race when granting write lease
2022-10-26 12:34:58 +02:00
ioctl.c
fs: fix an infinite loop in iomap_fiemap
2022-05-25 09:57:26 +02:00
Kconfig
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
Kconfig.binfmt
binfmt: remove support for em86 (alpha only)
2021-07-25 22:33:03 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2022-12-31 13:14:03 +01:00
locks.c
filelock: new helper: vfs_inode_has_locks
2023-01-12 11:59:14 +01:00
Makefile
io_uring: move to separate directory
2022-12-14 11:37:31 +01:00
mbcache.c
mbcache: Avoid nesting of cache->c_list_lock under bit locks
2023-01-12 11:59:20 +01:00
mount.h
…
mpage.c
…
namei.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-26 09:24:51 +01:00
namespace.c
fs: require CAP_SYS_ADMIN in target namespace for idmapped mounts
2022-08-31 17:16:37 +02:00
no-block.c
…
nsfs.c
…
open.c
locks: fix TOCTOU race when granting write lease
2022-10-26 12:34:58 +02:00
pipe.c
pipe: Fix missing lock in pipe_resize_ring()
2022-06-06 08:43:37 +02:00
pnode.c
pnode: terminate at peers of source
2023-01-12 11:58:47 +01:00
pnode.h
…
posix_acl.c
fs: fix acl translation
2022-07-02 16:41:17 +02:00
proc_namespace.c
fs: add is_idmapped_mnt() helper
2022-07-02 16:41:14 +02:00
read_write.c
vfs: fix copy_file_range() averts filesystem freeze protection
2022-12-19 12:36:39 +01:00
readdir.c
…
remap_range.c
fs/remap: constrain dedupe of EOF blocks
2022-07-21 21:24:14 +02:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-29 10:58:25 +01:00
seq_file.c
rxrpc: Fix locking issue
2022-07-12 16:35:08 +02:00
signalfd.c
signalfd: use wake_up_pollfree()
2021-12-14 10:57:15 +01:00
splice.c
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-26 12:34:17 +02:00
stack.c
…
stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 14:38:57 +02:00
statfs.c
…
super.c
fscrypt: fix keyring memory leak on mount failure
2022-11-10 18:15:37 +01:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-04-27 14:38:50 +02:00
timerfd.c
timerfd: Provide timerfd_resume()
2021-08-10 17:57:22 +02:00
userfaultfd.c
userfaultfd: open userfaultfds with O_RDONLY
2022-10-26 12:34:36 +02:00
utimes.c
…
xattr.c
fs: don't audit the capability check in simple_xattr_list()
2022-12-31 13:14:01 +01:00