Ronnie Sahlberg 5d3b4cd873 cifs: check ntwrk_buf_start for NULL before dereferencing it ...

[ Upstream commit 59a63e479c ]

RHBZ: 1021460

There is an issue where when multiple threads open/close the same directory
ntwrk_buf_start might end up being NULL, causing the call to smbCalcSize
later to oops with a NULL deref.

The real bug is why this happens and why this can become NULL for an
open cfile, which should not be allowed.
This patch tries to avoid a oops until the time when we fix the underlying
issue.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-02-12 19:47:17 +01:00

..

asn1.c

…

cache.c

cifs: use 64-bit timestamps for fscache

2018-08-07 14:15:41 -05:00

cifs_debug.c

smb3: allow stats which track session and share reconnects to be reset

2018-11-13 11:08:48 -08:00

cifs_debug.h

…

cifs_dfs_ref.c

…

cifs_fs_sb.h

…

cifs_ioctl.h

…

cifs_spnego.c

smb3: on kerberos mount if server doesn't specify auth type use krb5

2018-11-13 11:08:48 -08:00

cifs_spnego.h

…

cifs_unicode.c

fs/cifs: don't translate SFM_SLASH (U+F026) to backslash

2018-09-02 23:21:42 -05:00

cifs_unicode.h

…

cifs_uniupr.h

…

cifsacl.c

…

cifsacl.h

…

cifsencrypt.c

cifs: Make sure all data pages are signed correctly

2018-08-07 14:15:41 -05:00

cifsfs.c

cifs: don't dereference smb_file_target before null check

2018-11-27 16:12:58 +01:00

cifsfs.h

cifs: update internal module version number for cifs.ko to 2.12

2018-08-23 15:11:10 -05:00

cifsglob.h

cifs: add a warning if we try to to dequeue a deleted mid

2018-10-02 18:12:31 -05:00

cifspdu.h

…

cifsproto.h

cifs: add compound_send_recv()

2018-08-07 14:23:20 -05:00

cifssmb.c

CIFS: Fix credits calculations for reads with errors

2019-01-31 08:14:37 +01:00

connect.c

cifs: Always resolve hostname before reconnecting

2019-02-06 17:30:16 +01:00

dir.c

cifs: Fix separator when building path from dentry

2018-12-13 09:16:20 +01:00

dns_resolve.c

…

dns_resolve.h

…

export.c

…

file.c

cifs: Fix potential OOB access of lock element array

2019-01-16 22:04:31 +01:00

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

smb3: do not attempt cifs operation in smb3 query info error path

2018-11-13 11:08:48 -08:00

ioctl.c

…

Kconfig

cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)

2018-12-21 14:15:23 +01:00

link.c

smb3: don't request leases in symlink creation and query

2018-08-07 14:15:57 -05:00

Makefile

…

misc.c

cifs: read overflow in is_valid_oplock_break()

2018-09-12 17:13:34 -05:00

netmisc.c

cifs: use timespec64 internally

2018-08-07 14:15:41 -05:00

nterr.c

…

nterr.h

…

ntlmssp.h

…

readdir.c

cifs: check ntwrk_buf_start for NULL before dereferencing it

2019-02-12 19:47:17 +01:00

rfc1002pdu.h

…

sess.c

cifs: check kmalloc before use

2018-08-23 15:10:49 -05:00

smb1ops.c

cifs: simple stats should always be enabled

2018-08-07 14:20:22 -05:00

smb2file.c

cifs: Fix potential OOB access of lock element array

2019-01-16 22:04:31 +01:00

smb2glob.h

…

smb2inode.c

smb3: Do not send SMB3 SET_INFO if nothing changed

2018-08-07 14:30:59 -05:00

smb2maperror.c

CIFS: Fix error mapping for SMB2_LOCK command which caused OFD lock problem

2019-01-09 17:38:48 +01:00

smb2misc.c

smb3: add credits we receive from oplock/break PDUs

2019-01-31 08:14:37 +01:00

smb2ops.c

CIFS: Do not reconnect TCP session in add_credits()

2019-01-31 08:14:37 +01:00

smb2pdu.c

CIFS: Do not consider -ENODATA as stat failure for reads

2019-02-06 17:30:11 +01:00

smb2pdu.h

cifs: create a define for how many iovs we need for an SMB2_open()

2018-08-23 15:10:40 -05:00

smb2proto.h

cifs: update smb2_queryfs() to use compounding

2018-08-09 21:19:56 -05:00

smb2status.h

…

smb2transport.c

CIFS: fix uninitialized ptr deref in smb2 signing

2018-08-07 14:30:59 -05:00

smbdirect.c

Merge tag 'v4.18' into rdma.git for-next

2018-08-16 13:12:00 -06:00

smbdirect.h

cifs: fix SMB1 breakage

2018-07-05 13:48:24 -05:00

smbencrypt.c

…

smberr.h

…

smbfsctl.h

…

trace.c

…

trace.h

smb3: add tracepoint for slow responses

2018-08-07 14:28:01 -05:00

transport.c

CIFS: Fix credit computation for compounded requests

2019-01-16 22:04:31 +01:00

winucase.c

…

xattr.c

smb3: create smb3 equivalent alias for cifs pseudo-xattrs

2018-08-10 18:46:58 -05:00