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Unable to mount CIFS shares

PATCH In review Suresh Jayaraman 4 participants 11 messages Jan 31, 2011 6 messages not in the archive

Subsystems (2)
SMB client (CIFS) Kernel SMB3 server (ksmbd)
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Share & tools
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Suresh Jayaraman

author
#0 lore raw

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4

Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

cifs: don't pop a printk when sending on a socket is interrupted

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781] 
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0 
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044] 
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Signature · 1 line
Suresh Jayaraman
author
#2 lore raw
In reply to a message not in the archive
Quoted 10 lines · Suresh Jayaraman

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4

Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

cifs: don't pop a printk when sending on a socket is interrupted

Quoted 7 lines

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

Looks like commit ee2c9258501f83d3ed0fd09ce5df1cec53312cf0 is the culprit.

Quoted 45 lines

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781] 
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0 
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044] 
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Signature · 1 line
Suresh Jayaraman
#10 lore raw
In reply to a message not in the archive
Quoted 63 lines · Suresh Jayaraman

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4
Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

   cifs: don't pop a printk when sending on a socket is interrupted

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781]
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044]
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Quoted 3 lines

--
Suresh Jayaraman

Suresh, looks like plaintext authentication is failing? Does the mount succeed with any of sec options such as sec=ntlm or sec=ntlmv2 or sec=ntlmssp?

author
#12 lore raw
In reply to a message not in the archive
Quoted 63 lines · Shirish Pargaonkar
Quoted 53 lines · Suresh Jayaraman

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4

Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

cifs: don't pop a printk when sending on a socket is interrupted

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781]
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044]
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
Quoted 8 lines
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Quoted 3 lines

Suresh, looks like plaintext authentication is failing? Does the mount succeed with any of sec options such as sec=ntlm or sec=ntlmv2 or sec=ntlmssp?

Seems the issue is due to missing MD4 module. After I enabled CONFIG_CRYPTO_MD4 as suggested by Jeff, the issue went away.

Jeff, would send the fix in a bit.

Signature · 1 line
Suresh Jayaraman
#4 lore raw

PATCH 1/1 cifs: make CIFS depend on CRYPTO_MD4

In reply to a message not in the archive

Recently CIFS was changed to use the kernel crypto API for MD4 hashes, but the Kconfig dependencies were not changed to reflect this.

Signed-off-by Jeff Layton <[email protected]>
Reported-by Suresh Jayaraman <[email protected]>
---
 fs/cifs/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
fs/cifs/Kconfig +1 -0
index 27917a5..023d11b 100644
@@ -3,6 +3,7 @@ config CIFS
 	depends on INET
 	select NLS
 	select CRYPTO
+	select CRYPTO_MD4
 	select CRYPTO_MD5
 	select CRYPTO_HMAC
 	select CRYPTO_ARC4
Signature · 1 line
1.7.3.4
#13 lore raw
In reply to a message not in the archive
Quoted 64 lines · Shirish Pargaonkar
Quoted 63 lines · Suresh Jayaraman

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4
Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

   cifs: don't pop a printk when sending on a socket is interrupted

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781]
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044]
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Quoted 8 lines
Quoted 3 lines

--
Suresh Jayaraman

Suresh, looks like plaintext authentication is failing? Does the mount succeed with any of sec options such as sec=ntlm or sec=ntlmv2 or sec=ntlmssp?

This error does not look good

 [ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2

never seen it. Investigating.

I think I missed the change
select CRYPTO_MD5
in Kconfig. Can you try adding it and see if it helps?

Reviewed-by
#6 lore raw

Re: [PATCH] cifs: make CIFS depend on CRYPTO_MD4

In reply to a message not in the archive
Quoted 15 lines · Jeff Layton

Recently CIFS was changed to use the kernel crypto API for MD4 hashes, but the Kconfig dependencies were not changed to reflect this.

Signed-off-by Jeff Layton <[email protected]>
Reported-by Suresh Jayaraman <[email protected]>

---
 fs/cifs/Kconfig |    1 +

 1 files changed, 1 insertions(+), 0 deletions(-)
fs/cifs/Kconfig +0 -0
index 27917a5..023d11b 100644
@@ -3,6 +3,7 @@ config CIFS

       depends on INET

Quoted 10 lines

       select NLS
       select CRYPTO
+       select CRYPTO_MD4
       select CRYPTO_MD5
       select CRYPTO_HMAC
       select CRYPTO_ARC4
--
1.7.3.4

Thanks Jeff. Missed to make this change in an earlier patch.

Reviewed-by Shirish Pargaonkar <[email protected]>
#15 lore raw
In reply to a message not in the archive
Quoted 75 lines · Shirish Pargaonkar
Quoted 64 lines · Shirish Pargaonkar
Quoted 63 lines · Suresh Jayaraman

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4
Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

   cifs: don't pop a printk when sending on a socket is interrupted

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781]
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044]
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Quoted 8 lines
Quoted 3 lines

--
Suresh Jayaraman

Suresh, looks like plaintext authentication is failing? Does the mount succeed with any of sec options such as sec=ntlm or sec=ntlmv2 or sec=ntlmssp?

Quoted 8 lines

This error does not look good

 [ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2

never seen it. Investigating.

I think I missed the change
 select CRYPTO_MD5
in Kconfig.  Can you try adding it and see if it helps?

Wondering why I never ran into this problem while coming up with the patch and testing!

author
#16 lore raw
Quoted 81 lines · Shirish Pargaonkar
Quoted 79 lines · Shirish Pargaonkar
Quoted 64 lines · Shirish Pargaonkar
Quoted 63 lines · Suresh Jayaraman

After updating my tree to HEAD^1, I'm unable to mount CIFS Shares.

The topmost commit is:

commit d804d41d163c0975d2890c82d7135ada7a2f23a4

Author: Jeff Layton <[email protected]>
Date:   Fri Jan 28 15:05:43 2011 -0500

cifs: don't pop a printk when sending on a socket is interrupted

mount -t cifs //164.99.140.8/share /mnt/cifs/ -o user=vguest Password:
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Looks like an error caused due to recent crypto changes.
Shirish: any clues?

dmesg o/p
----------

[ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1079.934781]
[ 1079.934783] CIFS VFS: Error -2 during NTLM authentication
[ 1079.934785] CIFS VFS: Send error in SessSetup = -2
[ 1079.934802] CIFS VFS: cifs_mount failed w/return code = -2

dmesg with cFYI
----------------

[ 1121.620509] fs/cifs/cifsfs.c: Devname: //164.99.140.8/share/ flags: 0
[ 1121.620637] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 24 with uid: 0
[ 1121.620649] fs/cifs/connect.c: Username: vguest
[ 1121.623357] fs/cifs/connect.c: UNC: \\164.99.140.8\share ip: 164.99.140.8
[ 1121.623382] fs/cifs/connect.c: Socket created
[ 1121.623770] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6
[ 1121.623804] fs/cifs/fscache.c: CIFS: get client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.623809] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 25 with uid: 0
[ 1121.623811] fs/cifs/connect.c: Existing smb sess not found
[ 1121.623819] fs/cifs/cifssmb.c: secFlags 0x7
[ 1121.623824] fs/cifs/transport.c: For smb_command 114
[ 1121.623826] fs/cifs/transport.c: Sending smb:  total_len 82
[ 1121.623961] fs/cifs/connect.c: Demultiplex PID: 2768
[ 1121.625001] fs/cifs/connect.c: rfc1002 length 0x65
[ 1121.625007] fs/cifs/misc.c: Calculated size 81 vs length 101 mismatch for mid 1
[ 1121.625015] fs/cifs/transport.c: sync_mid_result: cmd=114 mid=1 state=4
[ 1121.625018] fs/cifs/cifssmb.c: Dialect: 2
[ 1121.625020] fs/cifs/cifssmb.c: negprot rc 0
[ 1121.625022] fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x80f3fd TimeAdjust: -19800
[ 1121.625024] fs/cifs/sess.c: sess setup type 1
[ 1121.627043] CIFS VFS: mdfour: Crypto md4 allocation error -2
[ 1121.627044]
[ 1121.627046] fs/cifs/smbencrypt.c: SMBNTencrypt Can't generate NT hash, error: -2
[ 1121.627048] fs/cifs/cifsencrypt.c: setup_ntlm_response Can't generate NTLM response, error: -2
[ 1121.627049] CIFS VFS: Error -2 during NTLM authentication
[ 1121.627051] fs/cifs/sess.c: ssetup freeing small buf ffff88001d348140
[ 1121.627052] CIFS VFS: Send error in SessSetup = -2
[ 1121.627055] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 25) rc = -2
[ 1121.627060] fs/cifs/fscache.c: CIFS: release client cookie (0xffff88001a202800/0xffff88001ceb6588)
[ 1121.627066] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 24) rc = -2
[ 1121.627068] CIFS VFS: cifs_mount failed w/return code = -2
Quoted 8 lines
Quoted 3 lines

--
Suresh Jayaraman

Suresh, looks like plaintext authentication is failing? Does the mount succeed with any of sec options such as sec=ntlm or sec=ntlmv2 or sec=ntlmssp?

This error does not look good

 [ 1079.934780] CIFS VFS: mdfour: Crypto md4 allocation error -2

never seen it. Investigating.

Quoted 7 lines
Quoted 4 lines

I think I missed the change
select CRYPTO_MD5
in Kconfig. Can you try adding it and see if it helps?

Wondering why I never ran into this problem while coming up with the patch and testing!

Possibly you might have had CONFIG_CRYPTO_MD4 enabled in your kernel config already. I use a striped down version for kernel config which didn't have MD4 on.

Signature · 1 line
Suresh Jayaraman
author
#7 lore raw

Re: [PATCH] cifs: make CIFS depend on CRYPTO_MD4

In reply to a message not in the archive
Quoted 8 lines · Jeff Layton

Recently CIFS was changed to use the kernel crypto API for MD4 hashes, but the Kconfig dependencies were not changed to reflect this.

Signed-off-by Jeff Layton <[email protected]>
Reported-by Suresh Jayaraman <[email protected]>
---
 fs/cifs/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

The patch fixed the problem for me.

Reported-and-Tested-by Suresh Jayaraman <[email protected]>
Quoted 12 lines
fs/cifs/Kconfig +1 -0
index 27917a5..023d11b 100644
@@ -3,6 +3,7 @@ config CIFS
 	depends on INET
 	select NLS
 	select CRYPTO
+	select CRYPTO_MD4
 	select CRYPTO_MD5
 	select CRYPTO_HMAC
 	select CRYPTO_ARC4
#9 lore raw

Re: [PATCH] cifs: make CIFS depend on CRYPTO_MD4

In reply to a message not in the archive

merged

Quoted 28 lines · Suresh Jayaraman
Quoted 8 lines · Jeff Layton

Recently CIFS was changed to use the kernel crypto API for MD4 hashes, but the Kconfig dependencies were not changed to reflect this.

Signed-off-by Jeff Layton <[email protected]>
Reported-by Suresh Jayaraman <[email protected]>

---
 fs/cifs/Kconfig |    1 +

 1 files changed, 1 insertions(+), 0 deletions(-)

The patch fixed the problem for me.

Reported-and-Tested-by Suresh Jayaraman <[email protected]>
Quoted 12 lines
fs/cifs/Kconfig +0 -0
index 27917a5..023d11b 100644
@@ -3,6 +3,7 @@ config CIFS

      depends on INET
      select NLS
      select CRYPTO
+     select CRYPTO_MD4
      select CRYPTO_MD5
      select CRYPTO_HMAC
      select CRYPTO_ARC4

Signature · 3 lines
Thanks,

Steve