Pavel Shilovsky 96a988ffeb CIFS: Fix a possible double locking of mutex during reconnect ... With the current code it is possible to lock a mutex twice when a subsequent reconnects are triggered. On the 1st reconnect we reconnect sessions and tcons and then persistent file handles. If the 2nd reconnect happens during the reconnecting of persistent file handles then the following sequence of calls is observed: cifs_reopen_file -> SMB2_open -> small_smb2_init -> smb2_reconnect -> cifs_reopen_persistent_file_handles -> cifs_reopen_file (again!). So, we are trying to acquire the same cfile->fh_mutex twice which is wrong. Fix this by moving reconnecting of persistent handles to the delayed work (smb2_reconnect_server) and submitting this work every time we reconnect tcon in SMB2 commands handling codepath. This can also lead to corruption of a temporary file list in cifs_reopen_persistent_file_handles() because we can recursively call this function twice. Cc: Stable <stable@vger.kernel.org> # v4.9+ Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>		2016-12-05 12:52:01 -08:00
..
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	cifs: remove any preceding delimiter from prefix_path	2016-05-17 14:09:33 -05:00
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
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	CIFS: Fix a possible double locking of mutex during reconnect	2016-12-05 12:52:01 -08:00
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	2016-12-05 12:08:33 -08:00
cifssmb.c	CIFS: iterate over posix acl xattr entry correctly in ACL_to_cifs_posix()	2016-11-28 23:08:53 -06:00
connect.c	CIFS: Fix a possible memory corruption during reconnect	2016-12-05 12:08:33 -08:00
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
export.c	[CIFS] cifs: Rename cERROR and cFYI to cifs_dbg	2013-05-04 22:17:23 -05:00
file.c	CIFS: Fix a possible double locking of mutex during reconnect	2016-12-05 12:52:01 -08:00
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	2016-12-02 16:04:33 -08:00
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	Clarify locking of cifs file and tcon structures and make more granular	2016-10-12 12:08:32 -05:00
rfc1002pdu.h
sess.c	cifs: check hash calculating succeeded	2016-06-23 23:45:17 -05:00
smb1ops.c	Fix that several functions handle incorrect value of mapchars	2015-05-10 19:56:35 -05:00
smb2file.c	CIFS: Fix a possible memory corruption in push locks	2016-12-05 11:08:55 -08:00
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	Clarify locking of cifs file and tcon structures and make more granular	2016-10-12 12:08:32 -05:00
smb2ops.c	Cleanup missing frees on some ioctls	2016-10-13 19:48:20 -05:00
smb2pdu.c	CIFS: Fix a possible double locking of mutex during reconnect	2016-12-05 12:52:01 -08:00
smb2pdu.h	CIFS: Fix a possible double locking of mutex during reconnect	2016-12-05 12:52:01 -08:00
smb2proto.h	CIFS: Fix a possible memory corruption during reconnect	2016-12-05 12:08:33 -08:00
smb2status.h	CIFS: Add SMB2 status codes	2012-07-24 10:25:13 -05:00
smb2transport.c	cifs: merge the hash calculation helpers	2016-03-28 14:05:27 -04:00
smbencrypt.c	cifs: Use skcipher	2016-01-27 20:35:53 +08:00
smberr.h
smbfsctl.h	[SMB3] Send durable handle v2 contexts when use of persistent handles required	2015-11-03 09:26:27 -06:00
transport.c	cifs: quit playing games with draining iovecs	2016-03-28 14:05:32 -04:00
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