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Ross Lagerwall 1f39e518cf cifs: Limit memory used by lock request calls to a page 
[ Upstream commit 92a8109e4d3a34fb6b115c9098b51767dc933444 ]

The code tries to allocate a contiguous buffer with a size supplied by
the server (maxBuf). This could fail if memory is fragmented since it
results in high order allocations for commonly used server
implementations. It is also wasteful since there are probably
few locks in the usual case. Limit the buffer to be no larger than a
page to avoid memory allocation failures due to fragmentation.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-02-20 10:13:21 +01:00
..
9p v9fs_dir_readdir: fix double-free on p9stat_read error 2018-12-01 09:46:33 +01:00
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 autofs_sbi() does not check super block type 2018-09-19 22:49:00 +02:00
befs
bfs bfs: add sanity check at bfs_fill_super() 2018-12-01 09:46:33 +01:00
btrfs btrfs: wait on ordered extents on abort cleanup 2019-01-26 09:42:50 +01:00
cachefiles fscache, cachefiles: remove redundant variable 'cache' 2018-12-17 21:55:12 +01:00
ceph ceph: don't update importing cap's mseq when handing cap export 2019-01-13 10:05:33 +01:00
cifs cifs: Limit memory used by lock request calls to a page 2019-02-20 10:13:21 +01:00
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 debugfs_rename parameter checking 2019-02-20 10:13:18 +01:00
devpts
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
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 potential use after free 2018-12-13 09:21:27 +01:00
ext4 ext4: fix a potential fiemap/page fault deadlock w/ inline_data 2019-01-16 22:16:12 +01:00
f2fs f2fs: fix wrong return value of f2fs_acl_create 2019-02-20 10:13:06 +01:00
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
hugetlbfs hugetlbfs: fix bug in pgoff overflow checking 2018-12-17 21:55:15 +01:00
isofs isofs: fix timestamps beyond 2027 2017-11-30 08:37:20 +00:00
jbd2 jbd2: fix use after free in jbd2_log_do_checkpoint() 2018-11-21 09:27:34 +01:00
jffs2 jffs2: Fix use of uninitialized delayed_work, lockdep breakage 2019-01-26 09:42:53 +01:00
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
minix
ncpfs staging: ncpfs: memory corruption in ncp_read_kernel() 2018-03-28 18:40:15 +02:00
nfs NFS: nfs_compare_mount_options always compare auth flavors. 2019-02-20 10:13:12 +01:00
nfs_common lockd: fix "list_add double add" caused by legacy signal interface 2018-02-03 17:04:28 +01:00
nfsd nfsd4: fix crash on writing v4_end_grace before nfsd startup 2019-02-20 10:13:07 +01:00
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
ocfs2 ocfs2: don't clear bh uptodate for block read 2019-02-20 10:13:13 +01:00
omfs
openpromfs
overlayfs ovl: proper cleanup of workdir 2018-09-15 09:40:41 +02:00
proc proc: Remove empty line in /proc/self/status 2019-01-26 09:42:49 +01:00
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
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
ubifs ubifs: Check for name being NULL while mounting 2018-10-13 09:11:34 +02:00
udf udf: Fix BUG on corrupted inode 2019-02-20 10:13:09 +01:00
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 fs, elf: make sure to page align bss in load_elf_library 2018-11-21 09:27:41 +01:00
binfmt_elf_fdpic.c
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: add i_blocksize() 2017-06-14 13:16:24 +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
dcache.c fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb() 2019-02-06 19:43:07 +01:00
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
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
file.c
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 Fix up non-directory creation in SGID directories 2018-07-17 11:31:43 +02:00
internal.h
ioctl.c
Kconfig
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
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
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
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