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linux/fs/cifs
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Ronnie Sahlberg 5de254dca8 cifs: fix crash querying symlinks stored as reparse-points 
We never parsed/returned any data from .get_link() when the object is a windows reparse-point
containing a symlink. This results in the VFS layer oopsing accessing an uninitialized buffer:

...
[  171.407172] Call Trace:
[  171.408039]  readlink_copy+0x29/0x70
[  171.408872]  vfs_readlink+0xc1/0x1f0
[  171.409709]  ? readlink_copy+0x70/0x70
[  171.410565]  ? simple_attr_release+0x30/0x30
[  171.411446]  ? getname_flags+0x105/0x2a0
[  171.412231]  do_readlinkat+0x1b7/0x1e0
[  171.412938]  ? __ia32_compat_sys_newfstat+0x30/0x30
...

Fix this by adding code to handle these buffers and make sure we do return a valid buffer
to .get_link()

CC: Stable <stable@vger.kernel.org>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2019-06-28 00:34:17 -05:00
..
asn1.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
cache.c
cifs: use 64-bit timestamps for fscache
2018-08-07 14:15:41 -05:00
cifs_debug.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
cifs_debug.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
cifs_dfs_ref.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cifs_fs_sb.h
smb3: make default i/o size for smb3 mounts larger
2019-03-04 20:05:35 -06:00
cifs_ioctl.h
SMB3: passthru query info doesn't check for SMB3 FSCTL passthru
2019-03-14 19:32:36 -05:00
cifs_spnego.c
smb3: on kerberos mount if server doesn't specify auth type use krb5
2018-11-02 14:09:41 -05:00
cifs_spnego.h
[CIFS] Rename three structures to avoid camel case
2011-05-27 04:34:02 +00:00
cifs_unicode.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
cifs_unicode.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
cifs_uniupr.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
cifsacl.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
cifsacl.h
cifs: For SMB2 security informaion query, check for minimum sized security descriptor instead of sizeof FileAllInformation class
2018-06-04 19:19:24 -05:00
cifsencrypt.c
cifs: remove coverity warning in calc_lanman_hash
2018-12-23 22:41:26 -06:00
cifsfs.c
cifs: add spinlock for the openFileList to cifsInodeInfo
2019-06-13 14:21:09 -05:00
cifsfs.h
cifs: update module internal version number
2019-05-07 23:24:56 -05:00
cifsglob.h
cifs: add spinlock for the openFileList to cifsInodeInfo
2019-06-13 14:21:09 -05:00
cifspdu.h
smb3: missing defines and structs for reparse point handling
2018-11-02 14:09:41 -05:00
cifsproto.h
cifs: Fix DFS cache refresher for DFS links
2019-05-07 23:24:54 -05:00
cifssmb.c
cifs: rename and clarify CIFS_ASYNC_OP and CIFS_NO_RESP
2019-05-07 23:24:55 -05:00
connect.c
cifs: fix GlobalMid_Lock bug in cifs_reconnect
2019-06-17 16:27:02 -05:00
dfs_cache.c
dfs_cache: fix a wrong use of kfree in flush_cache_ent()
2019-05-28 19:13:58 -05:00
dfs_cache.h
cifs: Fix DFS cache refresher for DFS links
2019-05-07 23:24:54 -05:00
dir.c
CIFS: make mknod() an smb_version_op
2019-03-14 19:32:36 -05:00
dns_resolve.c
dns_resolver: Allow used keys to be invalidated
2019-05-15 17:35:54 +01:00
dns_resolve.h
DNS: Separate out CIFS DNS Resolver code
2010-08-05 17:17:51 +00:00
export.c
[CIFS] cifs: Rename cERROR and cFYI to cifs_dbg
2013-05-04 22:17:23 -05:00
file.c
cifs: add spinlock for the openFileList to cifsInodeInfo
2019-06-13 14:21:09 -05:00
fscache.c
cifs: use 64-bit timestamps for fscache
2018-08-07 14:15:41 -05:00
fscache.h
cifs: use 64-bit timestamps for fscache
2018-08-07 14:15:41 -05:00
inode.c
cifs: add fiemap support
2019-05-07 23:24:55 -05:00
ioctl.c
cifs: add support for ioctl on directories
2018-10-23 21:16:05 -05:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
link.c
SMB3: Clean up query symlink when reparse point
2019-05-07 23:24:55 -05:00
Makefile
cifs: Add DFS cache routines
2018-12-28 10:05:58 -06:00
misc.c
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-05-06 20:15:06 -07:00
netmisc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
nterr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
nterr.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
ntlmssp.h
cifs: dynamic allocation of ntlmssp blob
2016-06-23 23:45:07 -05:00
readdir.c
cifs: check ntwrk_buf_start for NULL before dereferencing it
2018-12-23 22:41:31 -06:00
rfc1002pdu.h
[CIFS] whitespace cleanup
2007-06-05 18:30:44 +00:00
sess.c
cifs: remove set but not used variable 'smb_buf'
2018-12-23 22:41:20 -06:00
smb1ops.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 231
2019-06-19 17:09:06 +02:00
smb2file.c
SMB3: Allow persistent handle timeout to be configurable on mount
2019-04-01 14:33:36 -05:00
smb2glob.h
cifs: change SMB2_OP_RENAME and SMB2_OP_HARDLINK to use compounding
2018-10-23 21:16:04 -05:00
smb2inode.c
smb3: Add dynamic trace points for various compounded smb3 ops
2019-03-14 19:32:35 -05:00
smb2maperror.c
SMB3: retry on STATUS_INSUFFICIENT_RESOURCES instead of failing write
2019-06-17 16:17:56 -05:00
smb2misc.c
CIFS: keep FileInfo handle live during oplock break
2019-04-16 09:38:38 -05:00
smb2ops.c
cifs: fix crash querying symlinks stored as reparse-points
2019-06-28 00:34:17 -05:00
smb2pdu.c
cifs: fix panic in smb2_reconnect
2019-06-13 14:20:57 -05:00
smb2pdu.h
cifs: fix crash querying symlinks stored as reparse-points
2019-06-28 00:34:17 -05:00
smb2proto.h
smb3: Fix enumerating snapshots to Azure
2019-04-01 14:33:34 -05:00
smb2status.h
cifs: don't use __constant_cpu_to_le32()
2019-05-07 23:24:54 -05:00
smb2transport.c
CIFS: Only send SMB2_NEGOTIATE command on new TCP connections
2019-03-05 18:14:27 -06:00
smbdirect.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
smbdirect.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
smbencrypt.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
smberr.h
cifs: map NT_STATUS_ERROR_WRITE_PROTECTED to -EROFS
2010-08-02 12:40:40 +00:00
smbfsctl.h
cifs: add fiemap support
2019-05-07 23:24:55 -05:00
trace.c
smb3: Cleanup license mess
2019-01-24 09:37:33 -06:00
trace.h
cifs: Fix slab-out-of-bounds when tracing SMB tcon
2019-03-22 22:36:54 -05:00
transport.c
cifs: use the right include for signal_pending()
2019-05-12 23:23:34 -05:00
winucase.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
xattr.c
smb3: create smb3 equivalent alias for cifs pseudo-xattrs
2018-08-10 18:46:58 -05:00