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android_kernel_oneplus_msm8998/fs
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Mike Kravetz 66c57ab148 hugetlbfs: fix memory leak for resv_map 
[ Upstream commit 58b6e5e8f1addd44583d61b0a03c0f5519527e35 ]

When mknod is used to create a block special file in hugetlbfs, it will
allocate an inode and kmalloc a 'struct resv_map' via resv_map_alloc().
inode->i_mapping->private_data will point the newly allocated resv_map.
However, when the device special file is opened bd_acquire() will set
inode->i_mapping to bd_inode->i_mapping.  Thus the pointer to the
allocated resv_map is lost and the structure is leaked.

Programs to reproduce:
        mount -t hugetlbfs nodev hugetlbfs
        mknod hugetlbfs/dev b 0 0
        exec 30<> hugetlbfs/dev
        umount hugetlbfs/

resv_map structures are only needed for inodes which can have associated
page allocations.  To fix the leak, only allocate resv_map for those
inodes which could possibly be associated with page allocations.

Link: http://lkml.kernel.org/r/20190401213101.16476-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Yufen Yu <yuyufen@huawei.com>
Suggested-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-05-16 19:45:02 +02:00
..
9p 9p locks: add mount option for lock retry interval 2019-04-27 09:33:58 +02:00
adfs
affs affs_lookup(): close a race with affs_remove_link() 2018-05-30 07:48:51 +02:00
afs afs: Fix afs_kill_pages() 2017-12-20 10:04:56 +01:00
autofs4 autofs: fix error return in autofs_fill_super() 2019-03-23 08:44:27 +01:00
befs
bfs bfs: add sanity check at bfs_fill_super() 2018-12-01 09:46:33 +01:00
btrfs btrfs: raid56: properly unmap parity page in finish_parity_scrub() 2019-04-03 06:23:26 +02:00
cachefiles fscache, cachefiles: remove redundant variable 'cache' 2018-12-17 21:55:12 +01:00
ceph ceph: fix use-after-free on symlink traversal 2019-05-16 19:44:59 +02:00
cifs cifs: do not attempt cifs operation on smb2+ rename error 2019-05-16 19:44:43 +02:00
coda coda: fix 'kernel memory exposure attempt' in fsync 2017-11-24 08:32:25 +01:00
configfs configfs: replace strncpy with memcpy 2018-11-21 09:27:44 +01:00
cramfs Cramfs: fix abad comparison when wrap-arounds occur 2018-11-21 09:27:37 +01:00
debugfs debugfs: fix use-after-free on symlink traversal 2019-05-16 19:45:01 +02:00
devpts devpts: clean up interface to pty drivers 2016-08-16 09:30:49 +02:00
dlm dlm: Don't swamp the CPU with callbacks queued during recovery 2019-02-20 10:13:04 +01:00
ecryptfs do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:48:52 +02:00
efivarfs efi: Make efivarfs entries immutable by default 2016-03-03 15:07:09 -08:00
efs
exofs fs/exofs: fix potential memory leak in mount option parsing 2018-11-27 16:08:00 +01:00
exportfs exportfs: do not read dentry after free 2018-12-17 21:55:10 +01:00
ext2 ext2: Fix underflow in ext2_max_size() 2019-03-23 08:44:36 +01:00
ext4 ext4: prohibit fstrim in norecovery mode 2019-04-27 09:33:58 +02:00
f2fs f2fs: fix to do sanity check with current segment number 2019-04-27 09:33:58 +02:00
fat fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() 2018-11-10 07:41:40 -08:00
freevxfs
fscache fscache: fix race between enablement and dropping of object 2018-12-17 21:55:11 +01:00
fuse fuse: handle zero sized retrieve correctly 2019-02-20 10:13:16 +01:00
gfs2 gfs2: Revert "Fix loop in gfs2_rbm_find" 2019-02-06 19:43:07 +01:00
hfs hfs: do not free node before using 2018-12-17 21:55:12 +01:00
hfsplus hfsplus: do not free node before using 2018-12-17 21:55:12 +01:00
hostfs hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common() 2016-09-30 10:18:39 +02:00
hpfs hpfs: implement the show_options method 2016-06-01 12:15:54 -07:00
hugetlbfs hugetlbfs: fix memory leak for resv_map 2019-05-16 19:45:02 +02:00
isofs isofs: fix timestamps beyond 2027 2017-11-30 08:37:20 +00:00
jbd2 jbd2: fix compile warning when using JBUFFER_TRACE 2019-03-23 08:44:37 +01:00
jffs2 jffs2: fix use-after-free on symlink traversal 2019-05-16 19:45:01 +02:00
jfs jfs: Fix inconsistency between memory allocation and ea_buf->max_size 2018-08-09 12:19:28 +02:00
kernfs kernfs: Replace strncpy with memcpy 2018-12-13 09:21:29 +01:00
lockd lockd: fix access beyond unterminated strings in prints 2018-11-21 09:27:36 +01:00
logfs mm, fs: introduce mapping_gfp_constraint() 2015-11-06 17:50:42 -08:00
minix
ncpfs ncpfs: fix build warning of strncpy 2019-03-23 08:44:21 +01:00
nfs NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family. 2019-05-16 19:44:51 +02:00
nfs_common lockd: fix "list_add double add" caused by legacy signal interface 2018-02-03 17:04:28 +01:00
nfsd nfsd: Don't release the callback slot unless it was actually held 2019-05-16 19:44:44 +02:00
nilfs2 do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:48:52 +02:00
nls
notify fanotify: fix logic of events on child 2018-04-24 09:32:11 +02:00
ntfs mm, fs: introduce mapping_gfp_constraint() 2015-11-06 17:50:42 -08:00
ocfs2 ocfs2: fix a panic problem caused by o2cb_ctl 2019-04-27 09:33:48 +02:00
omfs
openpromfs
overlayfs ovl: fix uid/gid when creating over whiteout 2019-04-27 09:33:59 +02:00
proc fs/proc/proc_sysctl.c: Fix a NULL pointer dereference 2019-05-16 19:44:51 +02:00
pstore pstore/ram: Do not treat empty buffers as valid 2019-01-26 09:42:53 +01:00
qnx4
qnx6
quota fs/quota: Fix spectre gadget in do_quotactl 2018-09-09 20:04:36 +02:00
ramfs mm, fs: obey gfp_mapping for add_to_page_cache() 2015-10-16 11:42:28 -07:00
reiserfs reiserfs: propagate errors from fill_with_dentries() properly 2018-11-27 16:08:00 +01:00
romfs romfs: use different way to generate fsid for BLOCK or MTD 2017-06-17 06:39:38 +02:00
squashfs squashfs: more metadata hardenings 2018-08-06 16:24:42 +02:00
sysfs scsi: sysfs: Introduce sysfs_{un,}break_active_protection() 2018-09-05 09:18:40 +02:00
sysv sysv: return 'err' instead of 0 in __sysv_write_inode 2018-12-17 21:55:09 +01:00
tracefs tracefs: Fix refcount imbalance in start_creating() 2015-11-04 22:13:45 -05:00
ubifs ubifs: Check for name being NULL while mounting 2018-10-13 09:11:34 +02:00
udf udf: Fix crash on IO error during truncate 2019-04-03 06:23:14 +02:00
ufs do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:48:52 +02:00
xfs xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE 2019-01-26 09:42:52 +01:00
aio.c aio: fix spectre gadget in lookup_ioctx 2018-12-21 14:09:50 +01:00
anon_inodes.c
attr.c vfs: move permission checking into notify_change() for utimes(NULL) 2016-10-22 12:26:56 +02:00
bad_inode.c
binfmt_aout.c
binfmt_elf.c binfmt_elf: switch to new creds when switching to new mm 2019-04-27 09:33:53 +02:00
binfmt_elf_fdpic.c libnvdimm for 4.4: 2015-11-10 12:07:22 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c fs/binfmt_misc.c: do not allow offset overflow 2018-07-03 11:21:26 +02:00
binfmt_script.c Revert "exec: load_script: don't blindly truncate shebang string" 2019-02-20 10:13:20 +01:00
block_dev.c fs/block_dev: always invalidate cleancache in invalidate_bdev() 2017-05-20 14:27:01 +02:00
buffer.c fs: fix guard_bio_eod to check for real EOD errors 2019-04-27 09:33:49 +02:00
char_dev.c
compat.c
compat_binfmt_elf.c binfmt_elf: compat: avoid unused function warning 2018-02-25 11:03:51 +01:00
compat_ioctl.c fs: compat: Remove warning from COMPATIBLE_IOCTL 2018-04-08 11:51:57 +02:00
coredump.c coredump: Ensure proper size of sparse core files 2017-07-05 14:37:20 +02:00
dax.c dax: disable pmd mappings 2015-11-16 23:54:45 -08:00
dcache.c Hang/soft lockup in d_invalidate with simultaneous calls 2019-04-03 06:23:19 +02:00
dcookies.c
direct-io.c direct-io: Prevent NULL pointer access in submit_page_section 2017-10-18 09:20:42 +02:00
drop_caches.c fs/drop_caches.c: avoid softlockups in drop_pagecache_sb() 2019-03-23 08:44:26 +01:00
eventfd.c
eventpoll.c fs/epoll: drop ovflist branch prediction 2019-02-20 10:13:14 +01:00
exec.c mm: replace get_user_pages() write/force parameters with gup_flags 2018-12-17 21:55:16 +01:00
fcntl.c fs/fcntl: f_setown, avoid undefined behaviour 2018-01-31 12:06:11 +01:00
fhandle.c fs/coredump: prevent fsuid=0 dumps into user-controlled directories 2016-04-12 09:08:58 -07:00
file.c fs/file.c: initialize init_files.resize_wait 2019-04-27 09:33:49 +02:00
file_table.c
filesystems.c
fs-writeback.c bdi: Fix oops in wb_workfn() 2018-05-16 10:06:51 +02:00
fs_pin.c
fs_struct.c
inode.c writeback: initialize inode members that track writeback history 2019-04-03 06:23:21 +02:00
internal.h
ioctl.c
Kconfig dax: disable pmd mappings 2015-11-16 23:54:45 -08:00
Kconfig.binfmt
libfs.c
locks.c locks: don't check for race with close when setting OFD lock 2018-01-17 09:35:27 +01:00
Makefile ext4: promote ext4 over ext2 in the default probe order 2015-10-15 10:33:21 -04:00
mbcache.c
mount.h mnt: In propgate_umount handle visiting mounts in any order 2017-07-21 07:44:57 +02:00
mpage.c fs: add i_blocksize() 2017-06-14 13:16:24 +02:00
namei.c namei: allow restricted O_CREAT of FIFOs and regular files 2018-12-01 09:46:41 +01:00
namespace.c mount: Prevent MNT_DETACH from disconnecting locked mounts 2018-11-21 09:27:44 +01:00
no-block.c
nsfs.c nsfs: mark dentry with DCACHE_RCUACCESS 2018-02-16 20:09:43 +01:00
open.c fs: completely ignore unknown open flags 2017-07-15 11:57:44 +02:00
pipe.c pipe: cap initial pipe capacity according to pipe-max-size limit 2018-05-26 08:48:51 +02:00
pnode.c mnt: Make propagate_umount less slow for overlapping mount propagation trees 2017-07-21 07:44:58 +02:00
pnode.h mnt: Add a per mount namespace limit on the number of mounts 2017-04-30 05:49:28 +02:00
posix_acl.c tmpfs: clear S_ISGID when setting posix ACLs 2017-01-26 08:23:47 +01:00
proc_namespace.c vfs: show_vfsstat: do not ignore errors from show_devname method 2016-04-12 09:08:55 -07:00
read_write.c fs: add the fsnotify call to vfs_iter_write 2019-02-06 19:43:06 +01:00
readdir.c
select.c fs/select: add vmalloc fallback for select(2) 2018-01-31 12:06:09 +01:00
seq_file.c Make file credentials available to the seqfile interfaces 2017-08-06 19:19:42 -07:00
signalfd.c
splice.c vfs: fix uninitialized flags in splice_to_pipe() 2017-02-23 17:43:09 +01:00
stack.c
stat.c ufs: restore maintaining ->i_blocks 2017-06-14 13:16:24 +02:00
statfs.c
super.c fs: don't scan the inode cache before SB_BORN is set 2019-02-06 19:43:08 +01:00
sync.c fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback 2015-11-06 17:50:42 -08:00
timerfd.c timerfd: Protect the might cancel mechanism proper 2017-05-08 07:46:01 +02:00
userfaultfd.c userfaultfd: shmem: __do_fault requires VM_FAULT_NOPAGE 2017-12-20 10:04:53 +01:00
utimes.c vfs: move permission checking into notify_change() for utimes(NULL) 2016-10-22 12:26:56 +02:00
xattr.c getxattr: use correct xattr length 2018-09-09 20:04:36 +02:00