Muhammad Usama Anjum 4cccb6221c fs/proc/task_mmu: move mmu notification mechanism inside mm lock ... Move mmu notification mechanism inside mm lock to prevent race condition in other components which depend on it. The notifier will invalidate memory range. Depending upon the number of iterations, different memory ranges would be invalidated. The following warning would be removed by this patch: WARNING: CPU: 0 PID: 5067 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:734 kvm_mmu_notifier_change_pte+0x860/0x960 arch/x86/kvm/../../../virt/kvm/kvm_main.c:734 There is no behavioural and performance change with this patch when there is no component registered with the mmu notifier. [akpm@linux-foundation.org: narrow the scope of `range', per Sean] Link: https://lkml.kernel.org/r/20240109112445.590736-1-usama.anjum@collabora.com Fixes: 52526ca7fd ("fs/proc/task_mmu: implement IOCTL to get and optionally clear info about PTEs") Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Reported-by: syzbot+81227d2bd69e9dedb802@syzkaller.appspotmail.com Link: https://lore.kernel.org/all/000000000000f6d051060c6785bc@google.com/ Reviewed-by: Sean Christopherson <seanjc@google.com> Cc: Andrei Vagin <avagin@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Suren Baghdasaryan <surenb@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2024-01-12 15:20:46 -08:00
..
9p	Bunch of small fixes:	2023-11-04 09:20:04 -10:00
adfs	adfs: remove writepage implementation	2023-12-29 11:58:33 -08:00
affs	vfs-6.7.fsid	2023-11-07 12:11:26 -08:00
afs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
autofs	autofs: add: new_inode check in autofs_fill_super()	2023-11-20 14:56:36 +01:00
bcachefs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
befs	vfs-6.7.fsid	2023-11-07 12:11:26 -08:00
bfs	bfs: remove writepage implementation	2023-12-29 11:58:34 -08:00
btrfs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
cachefiles	vfs-6.8.cachefiles	2024-01-08 11:26:50 -08:00
ceph	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
coda	fs: move file_start_write() into vfs_iter_write()	2023-11-24 10:09:51 +01:00
configfs
cramfs	vfs-6.7.ctime	2023-10-30 09:47:13 -10:00
crypto	This update includes the following changes:	2023-11-02 16:15:30 -10:00
debugfs	Merge branches 'acpi-pm', 'acpi-video', 'acpi-apei' and 'acpi-extlog'	2024-01-04 13:19:40 +01:00
devpts
dlm
ecryptfs	fs: Pass AT_GETATTR_NOSEC flag to getattr interface function	2023-11-18 14:54:07 +01:00
efivarfs	efivarfs: automatically update super block flag	2023-12-11 11:19:18 +01:00
efs	vfs-6.7.fsid	2023-11-07 12:11:26 -08:00
erofs	MAINTAINERS: erofs: add EROFS webpage	2023-11-17 19:55:46 +08:00
exfat	exfat: fix ctime is not updated	2023-11-03 22:24:11 +09:00
exportfs	fs: fix build error with CONFIG_EXPORTFS=m or not defined	2023-10-28 16:16:19 +02:00
ext2	fs: convert error_remove_page to error_remove_folio	2023-12-10 16:51:42 -08:00
ext4	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
f2fs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -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
fscache
fuse	vfs-6.8.rw	2024-01-08 11:11:51 -08:00
gfs2	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
hfs	hfs: really remove hfs_writepage	2023-12-29 11:58:34 -08:00
hfsplus	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
hostfs
hpfs
hugetlbfs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
iomap	mm: add folio_fill_tail() and use it in iomap	2023-12-10 16:51:36 -08:00
isofs
jbd2	jbd2: fix soft lockup in journal_finish_inode_data_buffers()	2023-12-12 10:25:46 -05:00
jffs2	jffs2: mark __jffs2_dbg_superblock_counts() static	2023-12-10 17:21:43 -08:00
jfs	vfs-6.7.fsid	2023-11-07 12:11:26 -08:00
kernfs	Driver core changes for 6.7-rc1	2023-11-03 15:15:47 -10:00
lockd
minix	minix: remove writepage implementation	2023-12-29 11:58:34 -08:00
netfs
nfs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
nfs_common
nfsd	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
nilfs2	Quite a lot of kexec work this time around. Many singleton patches in	2024-01-09 11:46:20 -08:00
nls
notify	vfs-6.7.fsid	2023-11-07 12:11:26 -08:00
ntfs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
ntfs3	vfs-6.7.fsid	2023-11-07 12:11:26 -08:00
ocfs2	fs: convert block_write_full_page to block_write_full_folio	2023-12-29 11:58:35 -08:00
omfs
openpromfs
orangefs	vfs-6.7.ctime	2023-10-30 09:47:13 -10:00
overlayfs	integrity-v6.8	2024-01-09 13:24:06 -08:00
proc	fs/proc/task_mmu: move mmu notification mechanism inside mm lock	2024-01-12 15:20:46 -08:00
pstore	pstore updates for v6.7-rc1	2023-10-30 19:26:39 -10:00
qnx4
qnx6
quota	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
ramfs	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
reiserfs	reiserfs: fix uninit-value in comp_keys	2023-12-28 11:56:52 +01:00
romfs	vfs-6.7.ctime	2023-10-30 09:47:13 -10:00
smb	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
squashfs	Squashfs: fix variable overflow triggered by sysbot	2023-12-10 17:21:26 -08:00
sysfs
sysv	sysv: remove writepage implementation	2023-12-29 11:58:35 -08:00
tracefs	eventfs: Fix bitwise fields for "is_events"	2024-01-02 15:20:44 -05:00
ubifs	This pull request contains updates for UBI and UBIFS	2023-11-05 08:28:32 -10:00
udf	\n	2023-11-02 08:19:51 -10:00
ufs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
unicode
vboxsf
verity
xfs	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
zonefs	fs: convert error_remove_page to error_remove_folio	2023-12-10 16:51:42 -08:00
aio.c	vfs-6.8.iov_iter	2024-01-08 11:43:04 -08:00
anon_inodes.c
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
d_path.c
dax.c	fs : Fix warning using plain integer as NULL	2023-11-18 15:00:01 +01:00
dcache.c	list_lru: allow explicit memcg and NUMA node selection	2023-12-12 10:57:01 -08:00
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
exec.c	introduce for_other_threads(p, t)	2023-12-10 17:21:25 -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	fs: replace f_rcuhead with f_task_work	2023-12-12 14:24:13 +01:00
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	vfs-6.7.misc	2023-10-30 09:14:19 -10:00
fsopen.c
init.c
inode.c	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
internal.h	vfs-6.8.rw	2024-01-08 11:11:51 -08:00
ioctl.c	lsm: new security_file_ioctl_compat() hook	2023-12-24 15:48:03 -05:00
Kconfig	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
Kconfig.binfmt
kernel_read_file.c
libfs.c	libfs: getdents() should return 0 after reaching EOD	2023-11-20 15:34:22 +01:00
locks.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
Makefile	fs: prepare for stackable filesystems backing file helpers	2023-12-23 16:35:08 +02:00
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	Merge branch 'vfs.file'	2023-12-21 13:21:52 +01:00
namespace.c	vfs-6.8.mount	2024-01-08 10:57:34 -08:00
nsfs.c
open.c	vfs-6.8.rw	2024-01-08 11:11:51 -08:00
pipe.c	pipe: wakeup wr_wait after setting max_usage	2023-12-12 14:24:54 +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	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	fsnotify: optionally pass access range in file permission hooks	2023-12-12 16:20:02 +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	vfs-6.8.super	2024-01-08 10:43:51 -08:00
sync.c
sysctls.c
timerfd.c
userfaultfd.c	userfaultfd: UFFDIO_MOVE uABI	2023-12-29 11:58:24 -08:00
utimes.c
xattr.c