Baokun Li 85e833cd72 cachefiles: flush all requests after setting CACHEFILES_DEAD ... In ondemand mode, when the daemon is processing an open request, if the kernel flags the cache as CACHEFILES_DEAD, the cachefiles_daemon_write() will always return -EIO, so the daemon can't pass the copen to the kernel. Then the kernel process that is waiting for the copen triggers a hung_task. Since the DEAD state is irreversible, it can only be exited by closing /dev/cachefiles. Therefore, after calling cachefiles_io_error() to mark the cache as CACHEFILES_DEAD, if in ondemand mode, flush all requests to avoid the above hungtask. We may still be able to read some of the cached data before closing the fd of /dev/cachefiles. Note that this relies on the patch that adds reference counting to the req, otherwise it may UAF. Fixes: c838305450 ("cachefiles: notify the user daemon when looking up cookie") Signed-off-by: Baokun Li <libaokun1@huawei.com> Link: https://lore.kernel.org/r/20240522114308.2402121-12-libaokun@huaweicloud.com Acked-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>		2024-05-29 13:03:31 +02:00
..
9p	fs/9p: fix uninitialized values during inode evict	2024-03-25 14:16:06 +00:00
adfs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
affs	affs: remove SLAB_MEM_SPREAD flag usage	2024-02-26 11:36:28 +01:00
afs	afs: Fix occasional rmdir-then-VNOVNODE with generic/011	2024-03-14 12:13:21 +01:00
autofs	dcache stuff for this cycle	2024-01-11 20:11:35 -08:00
bcachefs	vfs-6.9-rc3.fixes	2024-04-05 09:47:26 -07:00
befs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
bfs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
btrfs	for-6.9-rc1-tag	2024-03-27 13:56:41 -07:00
cachefiles	cachefiles: flush all requests after setting CACHEFILES_DEAD	2024-05-29 13:03:31 +02:00
ceph	A patch to minimize blockage when processing very large batches of	2024-03-22 11:15:45 -07:00
coda	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
configfs
cramfs	fs,block: yield devices early	2024-03-27 13:17:15 +01:00
crypto	fscrypt updates for 6.9	2024-03-12 13:17:36 -07:00
debugfs	debugfs: fix wait/cancellation handling during remove	2024-03-07 22:08:15 +00:00
devpts	fs: Remove the now superfluous sentinel elements from ctl_table array	2023-12-28 04:57:57 -08:00
dlm	dlm for 6.9	2024-03-18 15:39:48 -07:00
ecryptfs	Merge tag 'exportfs-6.9' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/cel/linux	2024-01-23 17:56:30 +01:00
efivarfs	efivarfs: Drop 'duplicates' bool parameter on efivar_init()	2024-02-25 09:43:39 +01:00
efs	efs: remove SLAB_MEM_SPREAD flag usage	2024-02-27 11:21:33 +01:00
erofs	erofs: drop experimental warning for FSDAX	2024-03-25 10:48:15 +08:00
exfat	Description for this pull request:	2024-03-21 09:47:12 -07:00
exportfs	fs: Create a generic is_dot_dotdot() utility	2024-01-23 10:58:56 -05:00
ext2	\n	2024-03-13 14:30:58 -07:00
ext4	fs,block: yield devices early	2024-03-27 13:17:15 +01:00
f2fs	fs,block: yield devices early	2024-03-27 13:17:15 +01:00
fat	- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min	2024-03-14 18:03:09 -07:00
freevxfs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
fuse	fuse update for 6.9	2024-03-15 09:47:14 -07:00
gfs2	gfs2 fix	2024-03-25 10:53:39 -07:00
hfs	hfs: really remove hfs_writepage	2023-12-29 11:58:34 -08:00
hfsplus	vfs-6.9.misc	2024-03-11 09:38:17 -07:00
hostfs	hostfs: use d_splice_alias() calling conventions to simplify failure exits	2023-12-21 12:51:00 -05:00
hpfs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
hugetlbfs	vfs-6.9.misc	2024-03-11 09:38:17 -07:00
iomap	vfs-6.9.rw_hint	2024-03-04 18:35:21 +01:00
isofs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
jbd2	jbd2: abort journal when detecting metadata writeback error of fs dev	2024-01-04 23:42:21 -05:00
jffs2	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
jfs	fs,block: yield devices early	2024-03-27 13:17:15 +01:00
kernfs	Driver core changes for 6.9-rc1	2024-03-21 13:34:15 -07:00
lockd	NFSD 6.9 Release Notes	2024-03-12 14:27:37 -07:00
minix	minix: remove SLAB_MEM_SPREAD flag usage	2024-02-27 11:21:32 +01:00
netfs	fscache: Fix error handling in fscache_begin_operation()	2024-03-18 10:33:48 +01:00
nfs	NFS client updates for Linux 6.9	2024-03-16 11:44:00 -07:00
nfs_common
nfsd	nfsd-6.9 fixes:	2024-04-06 09:37:50 -07:00
nilfs2	nilfs2: prevent kernel bug at submit_bh_wbc()	2024-03-14 09:17:30 -07:00
nls
notify	fanotify: allow freeze when waiting response for permission events	2024-03-07 12:59:51 +01:00
ntfs3	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
ocfs2	- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min	2024-03-14 18:03:09 -07:00
omfs
openpromfs	openpromfs: remove SLAB_MEM_SPREAD flag usage	2024-02-27 11:21:32 +01:00
orangefs	Julia Lawall reported this null pointer dereference, this should fix it.	2024-02-14 15:57:53 -05:00
overlayfs	ovl: relax WARN_ON in ovl_verify_area()	2024-03-17 15:59:41 +02:00
proc	kbuild: make -Woverride-init warnings more consistent	2024-03-31 11:32:26 +09:00
pstore	pstore/zone: Don't clear memory twice	2024-03-09 12:33:22 -08:00
qnx4	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
qnx6	qnx6: remove SLAB_MEM_SPREAD flag usage	2024-02-27 11:21:32 +01:00
quota	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
ramfs	ramfs: Initialize security of in-memory inodes	2024-01-26 09:08:16 -08:00
reiserfs	fs,block: yield devices early	2024-03-27 13:17:15 +01:00
romfs	fs,block: yield devices early	2024-03-27 13:17:15 +01:00
smb	17 cifs.ko changesets, most also for stable	2024-04-06 09:06:17 -07:00
squashfs	Squashfs: fix variable overflow triggered by sysbot	2023-12-10 17:21:26 -08:00
sysfs	sysfs:Addresses documentation in sysfs_merge_group and sysfs_unmerge_group.	2024-03-07 22:04:50 +00:00
sysv	sysv: remove SLAB_MEM_SPREAD flag usage	2024-02-27 11:21:31 +01:00
tracefs	eventfs: Create eventfs_root_inode to store dentry	2024-03-17 07:58:52 -04:00
ubifs	This pull request contains updates for UBI and UBIFS:	2024-03-21 15:09:29 -07:00
udf	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
ufs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
unicode
vboxsf	vboxsf: explicitly deny setlease attempts	2024-04-03 16:06:39 +02:00
verity	Networking changes for 6.9.	2024-03-12 17:44:08 -07:00
xfs	Bug fixes for 6.9-rc3:	2024-04-06 09:14:18 -07:00
zonefs	mm, slab: remove last vestiges of SLAB_MEM_SPREAD	2024-03-12 20:32:19 -07:00
aio.c	aio: Fix null ptr deref in aio_complete() wakeup	2024-04-05 11:20:28 +02:00
anon_inodes.c	Merge branch 'kvm-guestmemfd' into HEAD	2023-11-14 08:31:31 -05:00
attr.c	lsm/stable-6.9 PR 20240312	2024-03-12 20:03:34 -07:00
backing-file.c	fs: Use KMEM_CACHE instead of kmem_cache_create	2024-02-02 13:11:50 +01:00
bad_inode.c
binfmt_elf.c
binfmt_elf_fdpic.c	binfmt: replace deprecated strncpy	2024-03-21 20:20:52 -07:00
binfmt_elf_test.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
buffer.c	vfs-6.9.iomap	2024-03-11 10:07:03 -07:00
char_dev.c
compat_binfmt_elf.c
coredump.c	iov_iter: get rid of 'copy_mc' flag	2024-03-06 10:52:12 +01:00
d_path.c
dax.c	fs : Fix warning using plain integer as NULL	2023-11-18 15:00:01 +01:00
dcache.c	vfs-6.9.misc	2024-03-11 09:38:17 -07:00
direct-io.c	block, fs: Restore the per-bio/request data lifetime fields	2024-02-06 14:31:05 +01:00
drop_caches.c
eventfd.c	eventfd: strictly check the count parameter of eventfd_write to avoid inputting illegal strings	2024-02-08 10:12:26 +01:00
eventpoll.c	Networking changes for 6.9.	2024-03-12 17:44:08 -07:00
exec.c	execve fixes for v6.9-rc2	2024-03-27 09:57:30 -07:00
fcntl.c	vfs-6.9.iomap	2024-03-11 10:07:03 -07:00
fhandle.c	do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak	2024-01-22 15:33:38 +01:00
file.c	file: remove __receive_fd()	2023-12-12 14:24:14 +01:00
file_table.c	lsm/stable-6.9 PR 20240312	2024-03-12 20:03:34 -07:00
filesystems.c
fs-writeback.c	writeback: move wb_wakeup_delayed defination to fs-writeback.c	2024-01-22 15:33:38 +01:00
fs_context.c
fs_parser.c	__fs_parse: Correct a documentation comment	2024-02-02 13:11:50 +01:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c
inode.c	bcachefs updates for 6.9	2024-03-15 09:00:09 -07:00
internal.h	pidfs: remove config option	2024-03-13 12:53:53 -07:00
ioctl.c	fs: add FS_IOC_GETFSSYSFSPATH	2024-02-12 13:13:59 +01:00
Kconfig	- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames	2024-03-14 17:43:30 -07:00
Kconfig.binfmt
kernel_read_file.c
libfs.c	pidfs: remove config option	2024-03-13 12:53:53 -07:00
locks.c	filelock: fix deadlock detection in POSIX locking	2024-02-20 09:53:33 +01:00
Makefile	vfs-6.9.pidfd	2024-03-11 10:21:06 -07:00
mbcache.c	vfs: remove SLAB_MEM_SPREAD flag usage	2024-02-27 11:21:31 +01:00
mnt_idmapping.c	fs/mnt_idmapping.c: Return -EINVAL when no map is written	2024-02-08 10:12:37 +01:00
mount.h	mounts: keep list of mounts in an rbtree	2023-11-18 14:56:16 +01:00
mpage.c	block, fs: Restore the per-bio/request data lifetime fields	2024-02-06 14:31:05 +01:00
namei.c	security: Place security_path_post_mknod() where the original IMA call was	2024-04-03 10:21:32 -07:00
namespace.c	fs: relax mount_setattr() permission checks	2024-02-07 21:16:29 +01:00
nsfs.c	pidfs: remove config option	2024-03-13 12:53:53 -07:00
open.c	lsm/stable-6.9 PR 20240312	2024-03-12 20:03:34 -07:00
pidfs.c	pidfs: remove config option	2024-03-13 12:53:53 -07:00
pipe.c	fs/pipe: Convert to lockdep_cmp_fn	2024-02-02 13:11:49 +01:00
pnode.c	mounts: keep list of mounts in an rbtree	2023-11-18 14:56:16 +01:00
pnode.h
posix_acl.c	lsm/stable-6.9 PR 20240312	2024-03-12 20:03:34 -07:00
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	fs/select: rework stack allocation hack for clang	2024-02-20 09:23:52 +01:00
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,block: yield devices early	2024-03-27 13:17:15 +01:00
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	userfaultfd: use per-vma locks in userfaultfd operations	2024-02-22 15:27:20 -08:00
utimes.c
xattr.c	evm: Move to LSM infrastructure	2024-02-15 23:43:47 -05:00