microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
WSL2-Linux-Kernel/fs
История
Li Jinlin 929ef155e1 fsdax: Fix infinite loop in dax_iomap_rw() 
[ Upstream commit 17d9c15c9b ]

I got an infinite loop and a WARNING report when executing a tail command
in virtiofs.

  WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0
  Modules linked in:
  CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7
  Call Trace:
  <TASK>
  dax_iomap_rw+0xea/0x620
  ? __this_cpu_preempt_check+0x13/0x20
  fuse_dax_read_iter+0x47/0x80
  fuse_file_read_iter+0xae/0xd0
  new_sync_read+0xfe/0x180
  ? 0xffffffff81000000
  vfs_read+0x14d/0x1a0
  ksys_read+0x6d/0xf0
  __x64_sys_read+0x1a/0x20
  do_syscall_64+0x3b/0x90
  entry_SYSCALL_64_after_hwframe+0x63/0xcd

The tail command will call read() with a count of 0. In this case,
iomap_iter() will report this WARNING, and always return 1 which casuing
the infinite loop in dax_iomap_rw().

Fixing by checking count whether is 0 in dax_iomap_rw().

Fixes: ca289e0b95 ("fsdax: switch dax_iomap_rw to use iomap_iter")
Signed-off-by: Li Jinlin <lijinlin3@huawei.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20220725032050.3873372-1-lijinlin3@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-09-28 11:11:56 +02:00
..
9p 9p: fix a bunch of checkpatch warnings 2022-08-17 14:24:07 +02:00
adfs
…
affs
…
afs afs: Return -EAGAIN, not -EREMOTEIO, when a file already locked 2022-09-23 14:15:51 +02:00
autofs autofs: fix wait name hash calculation in autofs_wait() 2021-10-20 21:09:02 -04:00
befs
…
bfs
…
btrfs btrfs: fix hang during unmount when stopping a space reclaim worker 2022-09-28 11:11:42 +02:00
cachefiles fs: add is_idmapped_mnt() helper 2022-07-02 16:41:14 +02:00
ceph ceph: don't leak snap_rwsem in handle_cap_grant 2022-08-25 11:40:13 +02:00
cifs cifs: always initialize struct msghdr smb_msg completely 2022-09-23 14:15:48 +02:00
coda
…
configfs configfs: fix a race in configfs_{,un}register_subsystem() 2022-03-02 11:48:02 +01:00
cramfs
…
crypto fscrypt: allow 256-bit master keys with AES-256-XTS 2021-11-18 19:16:11 +01:00
debugfs debugfs: add debugfs_lookup_and_remove() 2022-09-15 11:30:02 +02:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:27:01 +01:00
dlm dlm: fix pending remove if msg allocation fails 2022-07-29 17:25:24 +02:00
ecryptfs fs: add is_idmapped_mnt() helper 2022-07-02 16:41:14 +02:00
efivarfs
…
efs
…
erofs erofs: fix pcluster use-after-free on UP platforms 2022-09-15 11:30:06 +02:00
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: Add more validity checks for inode counts 2022-08-17 14:23:00 +02:00
ext4 ext4: avoid resizing to a partial cluster size 2022-08-25 11:40:40 +02:00
f2fs f2fs: fix to do sanity check on segment type in build_sit_entries() 2022-08-25 11:40:45 +02:00
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: Remove the control interface for virtio-fs 2022-08-17 14:24:11 +02:00
gfs2 gfs2: Fix gfs2_file_buffered_write endless loop workaround 2022-07-12 16:34:59 +02:00
hfs
…
hfsplus
…
hostfs
…
hpfs
…
hugetlbfs hugetlbfs: fix hugetlbfs_statfs() locking 2022-06-09 10:23:11 +02:00
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: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted 2022-08-17 14:24:01 +02:00
jffs2 jffs2: fix memory leak in jffs2_do_fill_super 2022-06-14 18:36:10 +02:00
jfs fs: jfs: fix possible NULL pointer dereference in dbFree() 2022-06-09 10:22:41 +02:00
kernfs kernfs: Separate kernfs_pr_cont_buf and rename_lock. 2022-06-14 18:36:22 +02:00
ksmbd ksmbd: don't remove dos attribute xattr on O_TRUNC open 2022-09-05 10:30:11 +02:00
lockd lockd: detect and reject lock arguments that overflow 2022-08-17 14:22:47 +02:00
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 NFSv4: Turn off open-by-filehandle and NFS re-export for NFSv4.0 2022-09-23 14:15:47 +02:00
nfs_common nfs: Fix kerneldoc warning shown up by W=1 2021-10-04 22:02:17 +01:00
nfsd nfsd: eliminate the NFSD_FILE_BREAK_* flags 2022-08-17 14:22:45 +02:00
nilfs2 nilfs2: fix incorrect masking of permission flags for symlinks 2022-07-21 21:24:14 +02:00
nls
…
notify fsnotify: fix wrong lockdep annotations 2022-06-09 10:22:50 +02:00
ntfs ntfs: fix use-after-free in ntfs_ucsncmp() 2022-08-03 12:03:41 +02:00
ntfs3 fs/ntfs3: Fix work with fragmented xattr 2022-09-05 10:30:10 +02:00
ocfs2 Revert "ocfs2: mount shared volume without ha stack" 2022-08-03 12:03:41 +02:00
omfs
…
openpromfs
…
orangefs orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc() 2022-01-20 09:13:13 +01:00
overlayfs ovl: warn if trusted xattr creation fails 2022-08-25 11:40:43 +02:00
proc mm/smaps: don't access young/dirty bit if pte unpresent 2022-08-31 17:16:37 +02:00
pstore pstore: Don't use semaphores in always-atomic-context code 2022-04-08 14:23:01 +02:00
qnx4
…
qnx6
…
quota quota: Prevent memory allocation recursion while holding dq_lock 2022-06-22 14:21:56 +02:00
ramfs
…
reiserfs
…
romfs
…
smbfs_common cifs: Fix crash on unload of cifs_arc4.ko 2021-12-14 10:57:12 +01:00
squashfs
…
sysfs
…
sysv
…
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: Avoid using stale lengthOfImpUse 2022-05-15 20:18:52 +02:00
ufs
…
unicode
…
vboxsf vboxfs: fix broken legacy mount signature checking 2021-09-27 11:26:21 -07:00
verity
…
xfs xfs: validate inode fork size against fork format 2022-09-28 11:11:45 +02:00
zonefs block: add a bdev_max_zone_append_sectors helper 2022-08-31 17:16:34 +02:00
Kconfig
…
Kconfig.binfmt
…
Makefile
…
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
…
binfmt_aout.c
…
binfmt_elf.c coredump: Use the vma snapshot in fill_files_note 2022-04-08 14:24:18 +02:00
binfmt_elf_fdpic.c coredump: Snapshot the vmas in do_coredump 2022-04-08 14:24:17 +02:00
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_script.c
…
buffer.c mm: fs: fix lru_cache_disabled race in bh_lru 2022-04-08 14:22:54 +02:00
char_dev.c
…
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
…
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
…
eventfd.c
…
eventpoll.c epoll: autoremove wakers even more aggressively 2022-08-17 14:22:59 +02:00
exec.c posix-cpu-timers: Cleanup CPU timers before freeing them during exec 2022-08-17 14:24:19 +02:00
fcntl.c
…
fhandle.c
…
file.c fs: fix fd table size alignment properly 2022-04-08 14:23:54 +02:00
file_table.c SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() 2022-05-18 10:26:57 +02:00
filesystems.c
…
fs-writeback.c writeback: avoid use-after-free after removing device 2022-08-31 17:16:47 +02:00
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
…
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fsopen.c
…
init.c
…
inode.c writeback: Fix inode->i_io_list not be protected by inode->i_lock error 2022-06-14 18:36:26 +02:00
internal.h block: simplify the block device syncing code 2022-04-27 14:38:50 +02:00
io-wq.c io-wq: drop wqe lock before creating new worker 2021-12-22 09:32:51 +01:00
io-wq.h
…
io_uring.c io_uring: fix UAF due to missing POLLFREE handling 2022-09-05 10:30:06 +02:00
ioctl.c fs: fix an infinite loop in iomap_fiemap 2022-05-25 09:57:26 +02:00
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
…
locks.c
…
mbcache.c mbcache: add functions to delete entry if unused 2022-08-17 14:22:57 +02:00
mount.h
…
mpage.c
…
namei.c __follow_mount_rcu(): verify that mount_lock remains unchanged 2022-08-17 14:24:19 +02:00
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 fs: support mapped mounts of mapped filesystems 2022-07-02 16:41:17 +02:00
pipe.c pipe: Fix missing lock in pipe_resize_ring() 2022-06-06 08:43:37 +02:00
pnode.c
…
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 fs: sendfile handles O_NONBLOCK of out_fd 2022-08-03 12:03:41 +02:00
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 fs: check FMODE_LSEEK to control internal pipe splicing 2022-08-17 14:23:31 +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 vfs: make freeze_super abort when sync_filesystem returns error 2022-02-23 12:03:05 +01:00
sync.c vfs: make sync_filesystem return errors from ->sync_fs 2022-04-27 14:38:50 +02:00
timerfd.c
…
userfaultfd.c userfaultfd: fix a race between writeprotect and exit_mmap() 2021-10-18 20:22:02 -10:00
utimes.c
…
xattr.c fs: fix acl translation 2022-07-02 16:41:17 +02:00