Yao Liu 6f976ecaf1 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 14:04:57 -07:00

..

blocklayout

pnfs/blocklayout: off by one in bl_map_stripe()

2018-09-09 20:01:23 +02:00

filelayout

NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success.

2017-01-19 20:18:05 +01:00

flexfilelayout

pNFS/flexfiles: missing error code in ff_layout_alloc_lseg()

2018-04-13 19:48:05 +02:00

objlayout

mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros

2016-04-04 10:41:08 -07:00

cache_lib.c

NFS: cache_lib: use complete() instead of complete_all()

2016-09-23 09:40:12 -04:00

cache_lib.h

…

callback_proc.c

NFSv4.1: Fix a potential layoutget/layoutrecall deadlock

2018-09-19 22:47:16 +02:00

callback_xdr.c

NFSv4.0 fix client reference leak in callback

2018-09-19 22:47:13 +02:00

callback.c

nfs: make nfs4_cb_sv_ops static

2017-10-08 10:26:10 +02:00

callback.h

nfs: add handling for CB_NOTIFY_LOCK in client

2016-09-22 13:56:04 -04:00

client.c

NFS: Ignore connections that have cl_rpcclient uninitialized

2016-11-07 16:11:29 -05:00

delegation.c

NFS: Always call nfs_inode_find_state_and_recover() when revoking a delegation

2016-09-27 14:35:04 -04:00

delegation.h

NFSv4: nfs_inode_find_state_and_recover() should check all stateids

2016-09-27 14:34:35 -04:00

dir.c

NFS: Fix a typo in nfs_rename()

2017-12-14 09:28:23 +01:00

direct.c

nfs: don't dirty kernel pages read by direct-io

2018-12-21 14:11:36 +01:00

dns_resolve.c

…

dns_resolve.h

…

file.c

NFS: Sync the correct byte range during synchronous writes

2017-09-13 14:13:37 -07:00

fscache-index.c

…

fscache.c

…

fscache.h

…

getroot.c

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15 15:06:57 -04:00

inode.c

NFS: only invalidate dentrys that are clearly invalid.

2017-07-27 15:08:06 -07:00

internal.h

NFS: Fix 2 use after free issues in the I/O code

2017-09-13 14:13:37 -07:00

io.c

NFS: Fix a race between mmap() and O_DIRECT

2018-02-17 13:21:14 +01:00

iostat.h

…

Kconfig

pnfs/blocklayout: require 64-bit sector_t

2017-08-16 13:43:22 -07:00

Makefile

NFS: Do not serialise O_DIRECT reads and writes

2016-07-05 19:11:04 -04:00

mount_clnt.c

NFS: Remove unneeded NFS_DEBUG checking before define NFSDBG_FACILITY

2015-10-21 15:49:23 -05:00

namespace.c

fs: Better permission checking for submounts

2017-03-15 10:02:44 +08:00

netns.h

fs: nfs: Make nfs boot time y2038 safe

2016-10-04 16:20:26 -04:00

nfs2super.c

…

nfs2xdr.c

…

nfs3_fs.h

…

nfs3acl.c

posix_acl: Inode acl caching fixes

2016-03-31 00:30:15 -04:00

nfs3client.c

nfs4: flexfiles: respect noresvport when establishing connections to DSes

2016-07-19 16:23:25 -04:00

nfs3proc.c

vfs: Remove {get,set,remove}xattr inode operations

2016-10-07 21:48:36 -04:00

nfs3super.c

…

nfs3xdr.c

xprtrdma: Fix large NFS SYMLINK calls

2015-08-05 16:21:28 -04:00

nfs4_fs.h

NFSv4: Fix CLOSE races with OPEN

2016-11-18 13:35:58 -05:00

nfs4client.c

NFSv4.1: Fix the r/wsize checking

2018-11-13 11:17:01 -08:00

nfs4file.c

switch generic_file_splice_read() to use of ->read_iter()

2016-10-05 18:23:56 -04:00

nfs4getroot.c

nfs: Remove invalid NFS_ATTR_FATTR_V4_REFERRAL checking in nfs4_get_rootfh

2015-07-01 11:31:22 -04:00

nfs4idmap.c

NFSv4: Fix possible 1-byte stack overflow in nfs_idmap_read_and_verify_message

2018-07-03 11:23:16 +02:00

nfs4idmap.h

NFS: Move nfs_idmap.h into fs/nfs/

2015-04-23 15:16:14 -04:00

nfs4namespace.c

fs: Better permission checking for submounts

2017-03-15 10:02:44 +08:00

nfs4proc.c

NFSv4.1 fix infinite loop on I/O.

2018-09-26 08:36:37 +02:00

nfs4renewd.c

NFSv4: Cap the transport reconnection timer at 1/2 lease period

2016-08-05 19:22:22 -04:00

nfs4session.c

fs/nfs: Fix used uninitialized warn in nfs4_slot_seqid_in_use()

2016-11-07 16:11:30 -05:00

nfs4session.h

NFSv4.1: Don't deadlock the state manager on the SEQUENCE status flags

2016-09-27 14:31:27 -04:00

nfs4state.c

NFSv4.1 fix infinite loop on I/O.

2018-09-26 08:36:37 +02:00

nfs4super.c

NFS: Move nfs_idmap.h into fs/nfs/

2015-04-23 15:16:14 -04:00

nfs4sysctl.c

nfs: Do not convert nfs_idmap_cache_timeout to jiffies

2018-05-30 07:50:20 +02:00

nfs4trace.c

pNFS: Modify pnfs_update_layout tracepoints to use layout stateid

2015-12-28 09:57:14 -05:00

nfs4trace.h

NFS: Avoid RCU usage in tracepoints

2017-11-30 08:39:04 +00:00

nfs4xdr.c

NFSv4: Fix EXCHANGE_ID corrupt verifier issue

2017-08-11 08:49:28 -07:00

nfs42.h

NFS: Add COPY nfs operation

2016-05-17 15:47:55 -04:00

nfs42proc.c

NFSv4: Fix reboot recovery in copy offload

2017-03-12 06:41:51 +01:00

nfs42xdr.c

NFSv4.2: Fix warning "variable ‘stateids’ set but not used"

2016-07-24 17:36:06 -04:00

nfs.h

…

nfsroot.c

nfsroot: make nfsroot to accept the 1024 bytes long directory name

2015-10-21 15:49:19 -05:00

nfstrace.c

NFSv4: Allow tracing of NFSv4 fsync calls

2015-03-27 12:39:34 -04:00

nfstrace.h

Merge tag 'nfs-for-4.8-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2016-07-30 16:33:25 -07:00

pagelist.c

NFS: Fix missing pg_cleanup after nfs_pageio_cond_complete()

2018-03-24 11:00:12 +01:00

pnfs_dev.c

NFSv4.1: Don't cache deviceids that have no notifications

2015-03-27 12:32:24 -04:00

pnfs_nfs.c

NFS pnfs data server multipath session trunking

2016-09-19 13:08:37 -04:00

pnfs.c

pNFS: Fix a deadlock when coalescing writes and returning the layout

2018-03-24 11:00:21 +01:00

pnfs.h

pNFS: On error, do not send LAYOUTGET until the LAYOUTRETURN has completed

2017-01-09 08:32:24 +01:00

proc.c

fs: rename "rename2" i_op to "rename"

2016-09-27 11:03:58 +02:00

read.c

mm: remove page_file_index

2016-10-07 18:46:28 -07:00

super.c

nfs: Fix NULL pointer dereference of dev_name

2019-03-13 14:04:57 -07:00

symlink.c

switch ->get_link() to delayed_call, kill ->put_link()

2015-12-30 13:01:03 -05:00

sysctl.c

…

unlink.c

qstr: constify instances in nfs

2016-07-20 23:30:06 -04:00

write.c

NFS: Fix unstable write completion

2018-03-18 11:18:54 +01:00