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linux/fs/cifs
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Sachin Prabhu d8fd99d472 Handle mismatched open calls 
commit 38bd49064a upstream.

A signal can interrupt a SendReceive call which result in incoming
responses to the call being ignored. This is a problem for calls such as
open which results in the successful response being ignored. This
results in an open file resource on the server.

The patch looks into responses which were cancelled after being sent and
in case of successful open closes the open fids.

For this patch, the check is only done in SendReceive2()

RH-bz: 1403319

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-05-08 07:47:55 +02:00
..
asn1.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
cache.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
cifs_debug.c Display number of credits available 2016-10-12 12:08:31 -05:00
cifs_debug.h lib: update single-char callers of strtobool() 2016-03-17 15:09:34 -07:00
cifs_dfs_ref.c fs: Better permission checking for submounts 2017-03-15 10:02:44 +08:00
cifs_fs_sb.h CIFS: Add new mount option to set owner uid and gid from special sids in acl 2016-10-14 14:22:01 -05:00
cifs_ioctl.h Enable previous version support 2016-10-13 19:48:11 -05:00
cifs_spnego.c cifs: Create dedicated keyring for spnego operations 2016-05-19 21:56:30 -05:00
cifs_spnego.h [CIFS] Rename three structures to avoid camel case 2011-05-27 04:34:02 +00:00
cifs_unicode.c File names with trailing period or space need special case conversion 2016-06-24 12:05:52 -05:00
cifs_unicode.h File names with trailing period or space need special case conversion 2016-06-24 12:05:52 -05:00
cifs_uniupr.h cifs: correction of unicode header files 2010-08-20 00:46:42 +00:00
cifsacl.c CIFS: Retrieve uid and gid from special sid if enabled 2016-10-14 14:22:16 -05:00
cifsacl.h cifs: fix SID binary to string conversion 2012-12-11 11:48:49 -06:00
cifsencrypt.c CIFS: Fix BUG() in calc_seckey() 2016-11-28 23:08:52 -06:00
cifsfs.c CIFS: Add new mount option to set owner uid and gid from special sids in acl 2016-10-14 14:22:01 -05:00
cifsfs.h cifs: don't use ->d_time 2016-09-16 12:44:21 +02:00
cifsglob.h Handle mismatched open calls 2017-05-08 07:47:55 +02:00
cifspdu.h Add way to query server fs info for smb3 2015-08-20 10:19:25 -05:00
cifsproto.h CIFS: Fix a possible memory corruption during reconnect 2017-01-06 10:40:16 +01:00
cifssmb.c Handle mismatched open calls 2017-05-08 07:47:55 +02:00
connect.c Handle mismatched open calls 2017-05-08 07:47:55 +02:00
dir.c cifs: don't use ->d_time 2016-09-16 12:44:21 +02:00
dns_resolve.c cifs: fix composing of mount options for DFS referrals 2013-05-24 13:08:31 -05:00
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: store results of cifs_reopen_file to avoid infinite wait 2017-04-21 09:31:19 +02:00
fscache.c NFS client updates for Linux 3.13 2013-11-08 05:57:46 +09:00
fscache.h CIFS: FS-Cache: Uncache unread pages in cifs_readpages() before freeing them 2013-09-18 10:17:03 -05:00
inode.c Merge remote-tracking branch 'jk/vfs' into work.misc 2016-10-08 11:06:08 -04:00
ioctl.c CIFS: Decrease verbosity of ioctl call 2017-01-06 10:40:16 +01:00
Kconfig Allow parsing vers=3.11 on cifs mount 2015-06-27 20:23:32 -07:00
link.c cifs: get rid of unused arguments of CIFSSMBWrite() 2016-09-27 21:54:53 -04:00
Makefile cifs: Switch to generic xattr handlers 2016-04-23 15:33:03 -04:00
misc.c Clarify locking of cifs file and tcon structures and make more granular 2016-10-12 12:08:32 -05:00
netmisc.c Fix signed/unsigned pointer warning 2014-12-14 14:55:57 -06:00
nterr.c CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
nterr.h CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
ntlmssp.h cifs: dynamic allocation of ntlmssp blob 2016-06-23 23:45:07 -05:00
readdir.c cifs: initialize file_info_lock 2017-02-09 08:08:27 +01:00
rfc1002pdu.h [CIFS] whitespace cleanup 2007-06-05 18:30:44 +00:00
sess.c cifs: check hash calculating succeeded 2016-06-23 23:45:17 -05:00
smb1ops.c cifs: Do not send echoes before Negotiate is complete 2017-04-27 09:10:37 +02:00
smb2file.c CIFS: Fix a possible memory corruption in push locks 2017-01-06 10:40:16 +01:00
smb2glob.h SMB3: Add mount parameter to allow user to override max credits 2016-10-12 12:08:33 -05:00
smb2inode.c Do not send SMB3 SET_INFO request if nothing is changing 2016-10-13 19:46:51 -05:00
smb2maperror.c Fix problem recognizing symlinks 2014-10-02 14:10:04 -05:00
smb2misc.c Handle mismatched open calls 2017-05-08 07:47:55 +02:00
smb2ops.c Handle mismatched open calls 2017-05-08 07:47:55 +02:00
smb2pdu.c CIFS: remove bad_network_name flag 2017-04-27 09:10:37 +02:00
smb2pdu.h CIFS: Fix a possible double locking of mutex during reconnect 2017-01-06 10:40:16 +01:00
smb2proto.h Handle mismatched open calls 2017-05-08 07:47:55 +02:00
smb2status.h CIFS: Add SMB2 status codes 2012-07-24 10:25:13 -05:00
smb2transport.c Handle mismatched open calls 2017-05-08 07:47:55 +02:00
smbencrypt.c cifs: Fix smbencrypt() to stop pointing a scatterlist at the stack 2017-01-06 10:40:16 +01:00
smberr.h cifs: map NT_STATUS_ERROR_WRITE_PROTECTED to -EROFS 2010-08-02 12:40:40 +00:00
smbfsctl.h [SMB3] Send durable handle v2 contexts when use of persistent handles required 2015-11-03 09:26:27 -06:00
transport.c Handle mismatched open calls 2017-05-08 07:47:55 +02:00
winucase.c [CIFS] quiet sparse compile warning 2013-09-08 14:54:24 -05:00
xattr.c Add way to query creation time of file via cifs xattr 2016-10-12 12:08:31 -05:00