Nadav Amit d172b1a3bd userfaultfd: provide properly masked address for huge-pages ... Commit 824ddc601a ("userfaultfd: provide unmasked address on page-fault") was introduced to fix an old bug, in which the offset in the address of a page-fault was masked. Concerns were raised - although were never backed by actual code - that some userspace code might break because the bug has been around for quite a while. To address these concerns a new flag was introduced, and only when this flag is set by the user, userfaultfd provides the exact address of the page-fault. The commit however had a bug, and if the flag is unset, the offset was always masked based on a base-page granularity. Yet, for huge-pages, the behavior prior to the commit was that the address is masked to the huge-page granulrity. While there are no reports on real breakage, fix this issue. If the flag is unset, use the address with the masking that was done before. Link: https://lkml.kernel.org/r/20220711165906.2682-1-namit@vmware.com Fixes: 824ddc601a ("userfaultfd: provide unmasked address on page-fault") Signed-off-by: Nadav Amit <namit@vmware.com> Reported-by: James Houghton <jthoughton@google.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: James Houghton <jthoughton@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-07-26 18:25:01 -07:00
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9p
adfs
affs
afs	afs: Fix dynamic root getattr	2022-06-21 11:47:30 -05:00
autofs
befs
bfs
btrfs	for-5.19-rc3-tag	2022-06-26 10:11:36 -07:00
cachefiles
ceph
cifs	cifs: update cifs_ses::ip_addr after failover	2022-06-24 13:34:28 -05:00
coda
configfs
cramfs
crypto
debugfs
devpts
dlm
ecryptfs
efivarfs
efs
erofs
exfat
exportfs
ext2
ext4
f2fs	f2fs: do not count ENOENT for error case	2022-06-21 08:29:56 -07:00
fat
freevxfs
fscache
fuse
gfs2
hfs
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hostfs
hpfs
hugetlbfs
iomap
isofs
jbd2
jffs2
jfs
kernfs
ksmbd
lockd
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nfs_common
nfsd
nilfs2	nilfs2: fix incorrect masking of permission flags for symlinks	2022-07-03 15:42:33 -07:00
nls
notify
ntfs	ntfs: fix use-after-free in ntfs_ucsncmp()	2022-07-18 15:07:52 -07:00
ntfs3
ocfs2	Revert "ocfs2: mount shared volume without ha stack"	2022-07-18 15:09:15 -07:00
omfs
openpromfs
orangefs
overlayfs
proc
pstore
qnx4
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ufs
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aio.c
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c
binfmt_elf_fdpic.c
binfmt_elf_test.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
buffer.c
char_dev.c
compat_binfmt_elf.c
coredump.c
d_path.c
dax.c
dcache.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c
fcntl.c
fhandle.c
file.c
file_table.c
filesystems.c
fs-writeback.c
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c
inode.c
internal.h
io-wq.c
io-wq.h
io_uring.c	io_uring: use original request task for inflight tracking	2022-06-23 11:06:43 -06:00
ioctl.c
Kconfig
Kconfig.binfmt
kernel_read_file.c
libfs.c
locks.c
Makefile
mbcache.c
mount.h
mpage.c
namei.c
namespace.c
no-block.c
nsfs.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c	fs: sendfile handles O_NONBLOCK of out_fd	2022-07-18 15:07:52 -07:00
readdir.c
remap_range.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c
super.c
sync.c
sysctls.c
timerfd.c
userfaultfd.c	userfaultfd: provide properly masked address for huge-pages	2022-07-26 18:25:01 -07:00
utimes.c
xattr.c