linux-stable/fs
Yao Liu 5c72ca3bf6 nfs: Fix NULL pointer dereference of dev_name
[ Upstream commit 80ff001724 ]

There is a NULL pointer dereference of dev_name in nfs_parse_devname()

The oops looks something like:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
  ...
  RIP: 0010:nfs_fs_mount+0x3b6/0xc20 [nfs]
  ...
  Call Trace:
   ? ida_alloc_range+0x34b/0x3d0
   ? nfs_clone_super+0x80/0x80 [nfs]
   ? nfs_free_parsed_mount_data+0x60/0x60 [nfs]
   mount_fs+0x52/0x170
   ? __init_waitqueue_head+0x3b/0x50
   vfs_kern_mount+0x6b/0x170
   do_mount+0x216/0xdc0
   ksys_mount+0x83/0xd0
   __x64_sys_mount+0x25/0x30
   do_syscall_64+0x65/0x220
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fix this by adding a NULL check on dev_name

Signed-off-by: Yao Liu <yotta.liu@ucloud.cn>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-03-13 14:02:30 -07:00
..
9p v9fs_dir_readdir: fix double-free on p9stat_read error 2018-12-01 09:37:27 +01:00
adfs adfs: use timespec64 for time conversion 2018-08-22 10:52:51 -07:00
affs
afs afs: Fix key refcounting in file locking code 2019-02-27 10:08:56 +01:00
autofs Merge branch 'akpm' (patches from Andrew) 2018-08-22 12:34:08 -07:00
befs
bfs bfs: add sanity check at bfs_fill_super() 2018-12-01 09:37:27 +01:00
btrfs btrfs: use tagged writepage to mitigate livelock of snapshot 2019-02-12 19:47:11 +01:00
cachefiles fscache, cachefiles: remove redundant variable 'cache' 2018-12-17 09:24:40 +01:00
ceph ceph: avoid repeatedly adding inode to mdsc->snap_flush_list 2019-02-27 10:08:50 +01:00
cifs CIFS: Do not assume one credit for async responses 2019-02-20 10:25:44 +01:00
coda
configfs configfs: fix registered group removal 2018-07-17 06:14:07 -07:00
cramfs Cramfs: fix abad comparison when wrap-arounds occur 2018-11-13 11:08:55 -08:00
crypto crypto: speck - remove Speck 2018-11-13 11:08:46 -08:00
debugfs debugfs: fix debugfs_rename parameter checking 2019-02-15 08:10:11 +01:00
devpts devpts: Convert to new IDA API 2018-08-21 23:54:17 -04:00
dlm dlm: Don't swamp the CPU with callbacks queued during recovery 2019-02-12 19:46:58 +01:00
ecryptfs
efivarfs efivars: Call guid_parse() against guid_t type of variable 2018-07-22 14:13:44 +02:00
efs
exofs fs/exofs: fix potential memory leak in mount option parsing 2018-11-27 16:13:00 +01:00
exportfs exportfs: do not read dentry after free 2018-12-17 09:24:35 +01:00
ext2 ext2: fix potential use after free 2018-12-05 19:32:11 +01:00
ext4 Revert "ext4: use ext4_write_inode() when fsyncing w/o a journal" 2019-02-15 08:10:13 +01:00
f2fs f2fs: fix sbi->extent_list corruption issue 2019-02-12 19:47:17 +01:00
fat fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() 2018-10-13 09:31:03 +02:00
freevxfs
fscache fscache: fix race between enablement and dropping of object 2018-12-17 09:24:40 +01:00
fuse fuse: handle zero sized retrieve correctly 2019-02-12 19:47:24 +01:00
gfs2 gfs2: Revert "Fix loop in gfs2_rbm_find" 2019-02-06 17:30:13 +01:00
hfs hfs: do not free node before using 2018-12-17 09:24:41 +01:00
hfsplus hfsplus: do not free node before using 2018-12-17 09:24:41 +01:00
hostfs vfs: discard ATTR_ATTR_FLAG 2018-08-17 16:20:28 -07:00
hpfs hpfs: remove unnecessary checks on the value of r when assigning error code 2018-08-25 12:42:33 -07:00
hugetlbfs hugetlbfs: fix races and page leaks during migration 2019-03-05 17:58:53 +01:00
isofs isofs: reject hardware sector size > 2048 bytes 2018-08-21 11:37:41 +02:00
jbd2 jbd2: fix use after free in jbd2_log_do_checkpoint() 2018-11-13 11:08:43 -08:00
jffs2 jffs2: Fix use of uninitialized delayed_work, lockdep breakage 2019-01-26 09:32:37 +01:00
jfs Just one jfs patch for 4.19 2018-08-15 22:47:23 -07:00
kernfs Driver core patches for 4.19-rc1 2018-08-18 11:44:53 -07:00
lockd lockd: Show pid of lockd for remote locks 2019-01-13 09:51:08 +01:00
minix
nfs nfs: Fix NULL pointer dereference of dev_name 2019-03-13 14:02:30 -07:00
nfs_common
nfsd Revert "nfsd4: return default lease period" 2019-02-20 10:25:47 +01:00
nilfs2 nilfs2: convert to SPDX license tags 2018-09-04 16:45:02 -07:00
nls
notify inotify: Fix fd refcount leak in inotify_add_watch(). 2019-01-31 08:14:34 +01:00
ntfs ntfs: mft: remove VLA usage 2018-08-17 16:20:27 -07:00
ocfs2 ocfs2: improve ocfs2 Makefile 2019-02-12 19:47:18 +01:00
omfs
openpromfs
orangefs orangefs: remove redundant pointer orangefs_inode 2018-08-14 12:07:14 -04:00
overlayfs ovl: fix missing override creds in link of a metacopy upper 2018-12-19 19:19:51 +01:00
proc proc, oom: do not report alien mms when setting oom_score_adj 2019-02-27 10:08:50 +01:00
pstore pstore/ram: Do not treat empty buffers as valid 2019-01-26 09:32:37 +01:00
qnx4
qnx6
quota quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls. 2019-01-26 09:32:42 +01:00
ramfs
reiserfs reiserfs: propagate errors from fill_with_dentries() properly 2018-11-27 16:12:59 +01:00
romfs
squashfs Squashfs: Compute expected length from inode size rather than block length 2018-08-02 09:34:02 -07:00
sysfs Driver core patches for 4.19-rc1 2018-08-18 11:44:53 -07:00
sysv sysv: return 'err' instead of 0 in __sysv_write_inode 2018-12-17 09:24:30 +01:00
tracefs tracefs: Annotate tracefs_ops with __ro_after_init 2018-07-31 11:32:44 -04:00
ubifs ubifs: Handle re-linking of inodes correctly while recovery 2018-12-29 13:37:55 +01:00
udf udf: Fix BUG on corrupted inode 2019-02-12 19:47:09 +01:00
ufs fs/ufs: use ktime_get_real_seconds for sb and cg timestamps 2018-08-17 16:20:27 -07:00
xfs xfs: eof trim writeback mapping as soon as it is cached 2019-02-12 19:47:23 +01:00
aio.c aio: Fix locking in aio_poll() 2019-03-10 07:17:21 +01:00
anon_inodes.c anon_inode_getfile(): switch to alloc_file_pseudo() 2018-07-12 10:04:27 -04:00
attr.c
bad_inode.c get rid of 'opened' argument of ->atomic_open() - part 3 2018-07-12 10:04:20 -04:00
binfmt_aout.c
binfmt_elf.c Here are the main MIPS changes for 4.19. 2018-08-13 19:24:32 -07:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c Revert "exec: load_script: don't blindly truncate shebang string" 2019-02-15 09:09:54 +01:00
block_dev.c blockdev: Fix livelocks on loop device 2019-01-22 21:40:36 +01:00
buffer.c notifier: Remove notifier header file wherever not used 2018-08-30 12:56:40 +02:00
char_dev.c
compat.c
compat_binfmt_elf.c
compat_ioctl.c media: dvb/audio.h: get rid of unused APIs 2018-07-30 16:21:49 -04:00
coredump.c
d_path.c
dax.c dax: Use non-exclusive wait in wait_entry_unlocked() 2019-01-09 17:38:46 +01:00
dcache.c fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb() 2019-02-06 17:30:11 +01:00
dcookies.c
direct-io.c direct-io: allow direct writes to empty inodes 2019-03-05 17:58:50 +01:00
drop_caches.c
eventfd.c
eventpoll.c fs/epoll: drop ovflist branch prediction 2019-02-12 19:47:19 +01:00
exec.c exec: Fix mem leak in kernel_read_file 2019-03-10 07:17:21 +01:00
fcntl.c signal: Don't send signals to tasks that don't exist 2018-08-15 23:03:20 -05:00
fhandle.c
file.c
file_table.c overlayfs update for 4.19 2018-08-21 18:19:09 -07:00
filesystems.c
fs-writeback.c writeback: synchronize sync(2) against cgroup writeback membership switches 2019-03-05 17:58:50 +01:00
fs_pin.c
fs_struct.c
inode.c Revert "mm: don't reclaim inodes with many attached pages" 2019-02-20 10:25:47 +01:00
internal.h overlayfs update for 4.19 2018-08-21 18:19:09 -07:00
ioctl.c vfs: fix FIGETBSZ ioctl on an overlayfs file 2018-11-21 09:19:14 +01:00
iomap.c iomap: fix a use after free in iomap_dio_rw 2019-03-13 14:02:29 -07:00
Kconfig
Kconfig.binfmt kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
libfs.c
locks.c overlayfs update for 4.19 2018-08-21 18:19:09 -07:00
Makefile
mbcache.c
mount.h
mpage.c mpage: mpage_readpages() should submit IO as read-ahead 2018-08-17 16:20:29 -07:00
namei.c Revert "vfs: Allow userns root to call mknod on owned filesystems." 2018-12-29 13:37:54 +01:00
namespace.c mnt: fix __detach_mounts infinite loop 2018-11-21 09:19:22 +01:00
no-block.c
nsfs.c
open.c overlayfs update for 4.19 2018-08-21 18:19:09 -07:00
pipe.c Merge branch 'work.open3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-08-13 19:58:36 -07:00
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c vfs: swap names of {do,vfs}_clone_file_range() 2018-09-24 10:54:01 +02:00
readdir.c
select.c
seq_file.c fs/seq_file.c: simplify seq_file iteration code and interface 2018-08-17 16:20:28 -07:00
signalfd.c
splice.c
stack.c
stat.c
statfs.c kernel: add kcompat_sys_{f,}statfs64() 2018-07-12 14:49:48 +01:00
super.c Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
sync.c
timerfd.c Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-08-13 20:56:23 -07:00
userfaultfd.c userfaultfd: clear flag if remap event not enabled 2019-01-26 09:32:43 +01:00
utimes.c
xattr.c sysfs: Do not return POSIX ACL xattrs via listxattr 2018-09-18 07:30:48 -04:00