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Matthew Wilcox (Oracle) 2f373fdb25 ramfs: fix nommu mmap with gaps in the page cache 
[ Upstream commit 50b7d85680086126d7bd91dae81d57d4cb1ab6b7 ]

ramfs needs to check that pages are both physically contiguous and
contiguous in the file.  If the page cache happens to have, eg, page A for
index 0 of the file, no page for index 1, and page A+1 for index 2, then
an mmap of the first two pages of the file will succeed when it should
fail.

Fixes: 642fb4d1f1dd ("[PATCH] NOMMU: Provide shared-writable mmap support on ramfs")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Howells <dhowells@redhat.com>
Link: https://lkml.kernel.org/r/20200914122239.GO6583@casper.infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-29 09:07:11 +01:00
..
9p
9p: Fix memory leak in v9fs_mount
2020-08-21 09:48:15 +02:00
adfs
fs/adfs: super: fix use-after-free bug
2019-08-06 19:05:21 +02:00
affs
affs: fix basic permission bits to actually work
2020-09-09 19:03:12 +02:00
afs
afs: Fix some tracing details
2020-04-02 16:34:33 +02:00
autofs4
autofs: fix a leak in autofs_expire_indirect()
2019-12-17 20:37:24 +01:00
befs
…
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:42:51 +01:00
btrfs
Btrfs: fix unexpected failure of nocow buffered writes after snapshotting when low on space
2020-10-14 09:51:11 +02:00
cachefiles
cachefiles: Fix race between read_waiter and read_copier involving op->to_do
2020-06-03 08:17:53 +02:00
ceph
ceph: fix potential race in ceph_check_caps
2020-10-01 13:12:46 +02:00
cifs
cifs: Return the error from crypt_message when enc/dec key not found.
2020-10-29 09:07:00 +01:00
coda
coda: add error handling for fget
2019-08-06 19:05:23 +02:00
configfs
configfs: fix config_item refcnt leak in configfs_rmdir()
2020-05-27 16:42:56 +02:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-13 11:15:12 -08:00
crypto
fscrypt: clean up some BUG_ON()s in block encryption/decryption
2019-07-31 07:28:22 +02:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-08 07:20:49 +02:00
devpts
fs/devpts: always delete dcache dentry-s in dput()
2019-03-23 14:35:21 +01:00
dlm
dlm: Fix kobject memleak
2020-08-21 09:48:13 +02:00
ecryptfs
ecryptfs: Fix up bad backport of fe2e082f5da5b4a0a92ae32978f81507ef37ec66
2020-03-11 18:02:51 +01:00
efivarfs
…
efs
…
exofs
exofs_mount(): fix leaks on failure exits
2019-12-05 15:37:28 +01:00
exportfs
exportfs: fix 'passing zero to ERR_PTR()' warning
2020-01-27 14:46:06 +01:00
ext2
ext2: fix missing percpu_counter_inc
2020-08-21 09:48:18 +02:00
ext4
ext4: fix a data race at inode->i_disksize
2020-10-01 13:12:36 +02:00
f2fs
f2fs: wait for sysfs kobject removal before freeing f2fs_sb_info
2020-10-29 09:07:10 +01:00
fat
fat: don't allow to mount if the FAT length == 0
2020-06-20 10:25:05 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 09:28:53 +01:00
fuse
fuse: don't check refcount after stealing page
2020-10-01 13:12:44 +02:00
gfs2
gfs2: clean up iopen glock mess in gfs2_create_inode
2020-10-01 13:12:30 +02:00
hfs
fs/hfs/extent.c: fix array out of bounds read of array extent
2019-12-01 09:13:57 +01:00
hfsplus
hfsplus: fix crash and filesystem corruption when deleting files
2020-04-24 08:00:45 +02:00
hostfs
…
hpfs
…
hugetlbfs
hugetlb: use same fault hash key for shared and private mappings
2019-05-31 06:47:12 -07:00
isofs
isofs: reject hardware sector size > 2048 bytes
2018-10-03 17:00:57 -07:00
jbd2
jbd2: abort journal if free a async write error metadata buffer
2020-09-03 11:22:29 +02:00
jffs2
jffs2: fix UAF problem
2020-08-26 10:29:56 +02:00
jfs
jfs: fix bogus variable self-initialization
2020-01-27 14:46:26 +01:00
kernfs
kernfs: fix ino wrap-around detection
2019-12-17 20:38:50 +01:00
lockd
lockd: fix decoding of TEST results
2019-12-17 20:38:15 +01:00
minix
fs/minix: reject too-large maximum file size
2020-08-21 09:48:15 +02:00
ncpfs
staging: ncpfs: memory corruption in ncp_read_kernel()
2018-03-28 18:24:43 +02:00
nfs
nfs: Fix security label length not being reset
2020-10-14 09:51:08 +02:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2018-02-03 17:39:08 +01:00
nfsd
nfsd: apply umask on fs without ACL support
2020-07-09 09:36:31 +02:00
nilfs2
nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
2020-06-20 10:25:01 +02:00
nls
…
notify
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
ntfs
…
ocfs2
ocfs2: change slot number type s16 to u16
2020-08-21 09:48:19 +02:00
omfs
…
openpromfs
…
orangefs
help_next should increase position index
2020-02-28 16:36:08 +01:00
overlayfs
ovl: initialize error in ovl_copy_xattr
2020-06-20 10:25:04 +02:00
proc
mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
2020-10-29 09:07:08 +01:00
pstore
pstore/ram: Write new dumps to start of recycled zones
2020-01-09 10:17:55 +01:00
qnx4
…
qnx6
…
quota
quota: clear padding in v2r1_mem2diskdqb()
2020-10-29 09:07:06 +01:00
ramfs
ramfs: fix nommu mmap with gaps in the page cache
2020-10-29 09:07:11 +01:00
reiserfs
reiserfs: Fix oops during mount
2020-10-17 10:29:55 +02:00
romfs
romfs: fix uninitialized memory leak in romfs_dev_read()
2020-08-26 10:29:54 +02:00
squashfs
Squashfs: Compute expected length from inode size rather than block length
2018-09-05 09:26:32 +02:00
sysfs
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
2018-09-05 09:26:41 +02:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 09:28:48 +01:00
tracefs
…
ubifs
ubifs: Fix out-of-bounds memory access caused by abnormal value of node_len
2020-10-01 13:12:40 +02:00
udf
udf: Fix free space reporting for metadata and virtual partitions
2020-02-28 16:36:02 +01:00
ufs
fs/ufs: avoid potential u32 multiplication overflow
2020-08-21 09:48:22 +02:00
xfs
xfs: limit entries returned when counting fsmap records
2020-10-29 09:07:09 +01:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-21 14:13:04 +01:00
anon_inodes.c
…
attr.c
…
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()
2020-06-03 08:18:03 +02:00
binfmt_em86.c
…
binfmt_flat.c
fs/binfmt_flat.c: make load_flat_shared_library() work
2019-07-03 13:15:59 +02:00
binfmt_misc.c
fs/binfmt_misc.c: do not allow offset overflow
2018-06-26 08:06:33 +08:00
binfmt_script.c
exec: load_script: Do not exec truncated interpreter path
2019-11-06 12:42:59 +01:00
block_dev.c
bdev: Reduce time holding bd_mutex in sync in blkdev_close()
2020-10-01 13:12:41 +02:00
buffer.c
fs: prevent BUG_ON in submit_bh_wbc()
2020-09-03 11:22:29 +02:00
char_dev.c
chardev: Avoid potential use-after-free in 'chrdev_open()'
2020-01-14 20:05:39 +01:00
compat_binfmt_elf.c
…
compat_ioctl.c
fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP
2020-01-09 10:17:58 +01:00
compat.c
…
coredump.c
coredump: fix crash when umh is disabled
2020-05-20 08:16:58 +02:00
dax.c
dax: pass NOWAIT flag to iomap_apply
2020-03-11 18:02:43 +01:00
dcache.c
fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb()
2019-02-06 17:31:34 +01:00
dcookies.c
…
direct-io.c
iomap: report collisions between directio and buffered writes to userspace
2019-04-27 09:35:41 +02:00
drop_caches.c
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
eventfd.c
…
eventpoll.c
ep_create_wakeup_source(): dentry name can change under you...
2020-10-14 09:51:09 +02:00
exec.c
exec: Move would_dump into flush_old_exec
2020-05-20 08:17:16 +02:00
fcntl.c
…
fhandle.c
…
file_table.c
…
file.c
fix multiplication overflow in copy_fdtable()
2020-05-27 16:42:51 +02:00
filesystems.c
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
2020-04-24 08:00:43 +02:00
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
writeback: Fix sync livelock due to b_dirty_time processing
2020-09-03 11:22:32 +02:00
inode.c
futex: Fix inode life-time issue
2020-04-02 16:34:21 +02:00
internal.h
…
ioctl.c
vfs: swap names of {do,vfs}_clone_file_range()
2018-11-10 07:48:33 -08:00
iomap.c
iomap: Fix pipe page leakage during splicing
2019-12-17 20:38:57 +01:00
Kconfig
…
Kconfig.binfmt
…
libfs.c
libfs: fix infoleak in simple_attr_read()
2020-04-02 16:34:35 +02:00
locks.c
locks: print unsigned ino in /proc/locks
2020-01-09 10:17:55 +01:00
Makefile
…
mbcache.c
mbcache: initialize entry->e_referenced in mb_cache_entry_create()
2018-02-22 15:42:25 +01:00
mount.h
…
mpage.c
…
namei.c
namei: only return -ECHILD from follow_dotdot_rcu()
2020-03-11 18:02:53 +01:00
namespace.c
fs/namespace.c: fix mountpoint reference counter race
2020-05-02 17:24:20 +02:00
no-block.c
…
nsfs.c
…
open.c
cifs_atomic_open(): fix double-put on late allocation failure
2020-03-20 10:54:16 +01:00
pipe.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
pnode.c
propagate_one(): mnt_set_mountpoint() needs mount_lock
2020-05-02 17:24:47 +02:00
pnode.h
…
posix_acl.c
…
proc_namespace.c
…
read_write.c
vfs: avoid problematic remapping requests into partial EOF block
2019-12-01 09:13:51 +01:00
readdir.c
filldir[64]: remove WARN_ON_ONCE() for bad directory entries
2020-01-04 14:00:04 +01:00
select.c
…
seq_file.c
seq_file: fix incomplete reset on read from zero offset
2018-02-22 15:42:28 +01:00
signalfd.c
…
splice.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
stack.c
…
stat.c
…
statfs.c
vfs: Fix EOVERFLOW testing in put_compat_statfs64
2019-10-11 18:18:48 +02:00
super.c
fs: don't scan the inode cache before SB_BORN is set
2018-05-30 07:51:47 +02:00
sync.c
…
timerfd.c
…
userfaultfd.c
userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK
2020-01-04 13:59:58 +01:00
utimes.c
…
xattr.c
xattr: break delegations in {set,remove}xattr
2020-08-21 09:48:00 +02:00