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11:49:43 -0500 Received: from [212.54.42.110] (helo=smtp7.tb.mail.iss.as9143.net) by smtpq3.tb.mail.iss.as9143.net with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1iv29K-00036N-4m; Fri, 24 Jan 2020 17:49:38 +0100 Received: from 94-209-183-118.cable.dynamic.v4.ziggo.nl ([94.209.183.118] helo=mail.kngnt.org) by smtp7.tb.mail.iss.as9143.net with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1iv29K-00048J-0r; Fri, 24 Jan 2020 17:49:38 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kngnt.org; s=mail; t=1579884577; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FTntNSS7d7L1vX/l5mjzcl7JoBTfl6OrhZcQrEb1XBw=; b=c+AvyqpA7ZSsYn/uRPIAhcxzOfWysl40KjElyLWEBAJ4afYKDHl1vgmfBvRcIS/72LY4c8 NrxjVa4sAzjLEdSNRsvXh3BFa2O38J9YRi7UQxXoDk3bMHYD07Z4qIst0NjCjEhZVATHV7 AFPamhbO1utVZyDc43dzxO9A3WbvnvRLVqFRp9XFi1vWdxLf+6V1YpuYazTQY6/gWqCkdp xTSHy+N9m8SP18w6H0WXjlF0UtBHAQGkhL6/f5wxFEv0NLNG5Jjv9ZDPj8DMxZw9LH/vB2 2PN8rXro6U8RgGdLE6ky7UW/iEcvobON1vxtYY3ctGHTwN/TUS71Vu3wmePHIQ== MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 24 Jan 2020 17:49:37 +0100 From: Felix Rubio To: Benjamin Coddington Cc: linux-nfs@vger.kernel.org Subject: Re: kerberized NFSv4 client reporting operation not permitted when mounting with sec=sys In-Reply-To: <87BD58D0-7A14-42BB-BA8F-54E6C78B2755@redhat.com> References: <0593b4af8ca3fafbec59655bbb39d2b4@kngnt.org> <724CB91C-76AC-425B-BAE3-04887ED5DE73@redhat.com> <6d998611c9205d6a0a8bf3806c297011@kngnt.org> <87BD58D0-7A14-42BB-BA8F-54E6C78B2755@redhat.com> Message-ID: X-Sender: felix@kngnt.org X-SourceIP: 94.209.183.118 X-Authenticated-Sender: f.rubiodalmau@ziggo.nl (via SMTP) X-Ziggo-spambar: / X-Ziggo-spamscore: 0.0 X-Ziggo-spamreport: CMAE Analysis: v=2.3 cv=PPhxBsiC c=1 sm=1 tr=0 a=KDOoBKh8T/kja8HrlTi2+A==:17 a=9+rZDBEiDlHhcck0kWbJtElFXBc=:19 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=IkcTkHD0fZMA:10 a=Jdjhy38mL1oA:10 a=ITzZAvUNQL8YSV4YsY8A:9 a=HnnX74U3PouIzNDD:21 a=mpcjKtS0YAX47Xzt:21 a=QEXdDO2ut3YA:10 X-Ziggo-Spam-Status: No X-Spam-Status: No X-Spam-Flag: No Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hi Benjamin, I have enabled the debug logging on nfsd by running When mounting from the client, this is what I get: [629588.647849] nfsd_dispatch: vers 4 proc 1 [629588.655615] nfsv4 compound op #1/1: 53 (OP_SEQUENCE) [629588.663926] __find_in_sessionid_hashtbl: 1579604994:2010353049:95:0 [629588.675361] nfsd4_sequence: slotid 0 [629588.679065] check_slot_seqid enter. seqid 644 slot_seqid 643 [629588.684589] nfsv4 compound op ffff882839705080 opcnt 1 #1: 53: status 0 [629588.691545] nfsv4 compound returned 0 [629588.695292] --> nfsd4_store_cache_entry slot ffff882806e83000 [629588.701933] renewing client (clientid 5e26dc02/77d38d99) [629591.804857] nfsd_dispatch: vers 4 proc 1 [629591.809364] nfsv4 compound op #1/4: 53 (OP_SEQUENCE) [629591.814944] __find_in_sessionid_hashtbl: 1579604994:2010353053:99:0 [629591.822163] nfsd4_sequence: slotid 0 [629591.826670] check_slot_seqid enter. seqid 155 slot_seqid 154 [629591.832771] nfsv4 compound op ffff882839705080 opcnt 4 #1: 53: status 0 [629591.839864] nfsv4 compound op #2/4: 24 (OP_PUTROOTFH) [629591.845161] nfsd: fh_compose(exp 08:02/17468677 /export, ino=17468677) [629591.851706] nfsv4 compound op ffff882839705080 opcnt 4 #2: 24: status 10016 [629591.859660] nfsv4 compound returned 10016 [629591.864797] --> nfsd4_store_cache_entry slot ffff882838b9e000 [629591.872968] renewing client (clientid 5e26dc02/77d38d9d) [629591.889085] nfsd_dispatch: vers 4 proc 1 [629591.893713] nfsv4 compound op #1/4: 53 (OP_SEQUENCE) [629591.899703] __find_in_sessionid_hashtbl: 1579604994:2010353053:99:0 [629591.906687] nfsd4_sequence: slotid 0 [629591.912695] check_slot_seqid enter. seqid 156 slot_seqid 155 [629591.918261] nfsv4 compound op ffff882839705080 opcnt 4 #1: 53: status 0 [629591.924866] nfsv4 compound op #2/4: 22 (OP_PUTFH) [629591.931075] nfsd: fh_verify(32: 01060001 63ce4307 5a18c100 00000000 00000000 1fba000a) [629591.940556] nfsv4 compound op ffff882839705080 opcnt 4 #2: 22: status 0 [629591.948776] nfsv4 compound op #3/4: 3 (OP_ACCESS) [629591.954607] nfsd: fh_verify(32: 01060001 63ce4307 5a18c100 00000000 00000000 1fba000a) [629591.967117] nfsv4 compound op ffff882839705080 opcnt 4 #3: 3: status 0 [629591.975364] nfsv4 compound op #4/4: 9 (OP_GETATTR) [629591.980854] nfsd: fh_verify(32: 01060001 63ce4307 5a18c100 00000000 00000000 1fba000a) [629591.990257] nfsv4 compound op ffff882839705080 opcnt 4 #4: 9: status 0 [629591.996796] nfsv4 compound returned 0 [629592.001758] --> nfsd4_store_cache_entry slot ffff882838b9e000 [629592.008061] renewing client (clientid 5e26dc02/77d38d9d) Using wireshark, this is the log of the packages from/to that ip address: # tshark -i eth0 -p -w /tmp/nfs_mount.cap host 10.1.0.12 and port nfs # tshark -r /tmp/nfs_mount.cap 1 0.000000000 10.1.0.12 -> 10.0.2.9 NFS 202 V4 Call PUTROOTFH | GETATTR 2 0.000058001 10.0.2.9 -> 10.1.0.12 TCP 54 nfs > rndc [ACK] Seq=1 Ack=149 Win=1432 Len=0 3 0.074041118 10.0.2.9 -> 10.1.0.12 NFS 146 V4 Reply (Call In 1) PUTROOTFH Status: NFS4ERR_WRONGSEC 4 0.074927630 10.1.0.12 -> 10.0.2.9 TCP 54 rndc > nfs [ACK] Seq=149 Ack=93 Win=1476 Len=0 5 0.084223658 10.1.0.12 -> 10.0.2.9 NFS 266 V4 Call ACCESS FH: 0xea1b01ae, [Check: RD LU MD XT DL] 6 0.084270458 10.0.2.9 -> 10.1.0.12 TCP 54 nfs > rndc [ACK] Seq=93 Ack=361 Win=1432 Len=0 7 0.208635667 10.0.2.9 -> 10.1.0.12 NFS 254 V4 Reply (Call In 5) ACCESS, [Access Denied: RD MD XT DL], [Allowed: LU] 8 0.248855020 10.1.0.12 -> 10.0.2.9 TCP 54 rndc > nfs [ACK] Seq=361 Ack=293 Win=1498 Len=0 I think the frame of interest is #1, so this is its contents: Frame 1: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0 Interface id: 0 Encapsulation type: Ethernet (1) Arrival Time: Jan 24, 2020 17:39:05.721360043 CET [Time shift for this packet: 0.000000000 seconds] Epoch Time: 1579883945.721360043 seconds [Time delta from previous captured frame: 0.000000000 seconds] [Time delta from previous displayed frame: 0.000000000 seconds] [Time since reference or first frame: 0.000000000 seconds] Frame Number: 1 Frame Length: 202 bytes (1616 bits) Capture Length: 202 bytes (1616 bits) [Frame is marked: False] [Frame is ignored: False] [Protocols in frame: eth:ip:tcp:rpc] Ethernet II, Src: 00:81:c4:c1:50:7f (00:81:c4:c1:50:7f), Dst: Microsof_44:24:d3 (00:0d:3a:44:24:d3) Destination: Microsof_44:24:d3 (00:0d:3a:44:24:d3) Address: Microsof_44:24:d3 (00:0d:3a:44:24:d3) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) Source: 00:81:c4:c1:50:7f (00:81:c4:c1:50:7f) Address: 00:81:c4:c1:50:7f (00:81:c4:c1:50:7f) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) Type: IP (0x0800) Internet Protocol Version 4, Src: 10.1.0.12 (10.1.0.12), Dst: 10.0.2.9 (10.0.2.9) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport)) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00) Total Length: 188 Identification: 0xa3e0 (41952) Flags: 0x02 (Don't Fragment) 0... .... = Reserved bit: Not set .1.. .... = Don't fragment: Set ..0. .... = More fragments: Not set Fragment offset: 0 Time to live: 64 Protocol: TCP (6) Header checksum: 0x8046 [validation disabled] [Good: False] [Bad: False] Source: 10.1.0.12 (10.1.0.12) Destination: 10.0.2.9 (10.0.2.9) Transmission Control Protocol, Src Port: rndc (953), Dst Port: nfs (2049), Seq: 1, Ack: 1, Len: 148 Source port: rndc (953) Destination port: nfs (2049) [Stream index: 0] Sequence number: 1 (relative sequence number) [Next sequence number: 149 (relative sequence number)] Acknowledgment number: 1 (relative ack number) Header length: 20 bytes Flags: 0x018 (PSH, ACK) 000. .... .... = Reserved: Not set ...0 .... .... = Nonce: Not set .... 0... .... = Congestion Window Reduced (CWR): Not set .... .0.. .... = ECN-Echo: Not set .... ..0. .... = Urgent: Not set .... ...1 .... = Acknowledgment: Set .... .... 1... = Push: Set .... .... .0.. = Reset: Not set .... .... ..0. = Syn: Not set .... .... ...0 = Fin: Not set Window size value: 1476 [Calculated window size: 1476] [Window size scaling factor: -1 (unknown)] Checksum: 0x4455 [validation disabled] [Good Checksum: False] [Bad Checksum: False] [SEQ/ACK analysis] [Bytes in flight: 148] Remote Procedure Call, Type:Call XID:0xd17c6210 Fragment header: Last fragment, 144 bytes 1... .... .... .... .... .... .... .... = Last Fragment: Yes .000 0000 0000 0000 0000 0000 1001 0000 = Fragment Length: 144 XID: 0xd17c6210 (3514589712) Message Type: Call (0) RPC Version: 2 Program: NFS (100003) Program Version: 4 Procedure: COMPOUND (1) Credentials Flavor: AUTH_UNIX (1) Length: 32 Stamp: 0x00418ae8 Machine Name: worker01 length: 8 contents: worker01 UID: 0 GID: 0 Auxiliary GIDs (1) [0] GID: 0 Verifier Flavor: AUTH_NULL (0) Length: 0 Network File System, Ops(4): SEQUENCE, PUTROOTFH, GETFH, GETATTR [Program Version: 4] [V4 Procedure: COMPOUND (1)] Tag: length: 0 contents: minorversion: 1 Operations (count: 4): SEQUENCE, PUTROOTFH, GETFH, GETATTR Opcode: SEQUENCE (53) sessionid: 02dc265e9d8dd3776300000000000000 seqid: 0x0000009b slot id: 0 high slot id: 0 cache this?: No Opcode: PUTROOTFH (24) Opcode: GETFH (10) Opcode: GETATTR (9) Attr mask[0]: 0x0010011a (TYPE, CHANGE, SIZE, FSID, FILEID) reqd_attr: TYPE (1) reqd_attr: CHANGE (3) reqd_attr: SIZE (4) reqd_attr: FSID (8) reco_attr: FILEID (20) Attr mask[1]: 0x00b0a23a (MODE, NUMLINKS, OWNER, OWNER_GROUP, RAWDEV, SPACE_USED, TIME_ACCESS, TIME_METADATA, TIME_MODIFY, MOUNTED_ON_FILEID) reco_attr: MODE (33) reco_attr: NUMLINKS (35) reco_attr: OWNER (36) reco_attr: OWNER_GROUP (37) reco_attr: RAWDEV (41) reco_attr: SPACE_USED (45) reco_attr: TIME_ACCESS (47) reco_attr: TIME_METADATA (52) reco_attr: TIME_MODIFY (53) reco_attr: MOUNTED_ON_FILEID (55) [Main Opcode: PUTROOTFH (24)] [Main Opcode: GETATTR (9)] Just in case, this is the answer of the server: Frame 3: 146 bytes on wire (1168 bits), 146 bytes captured (1168 bits) on interface 0 Interface id: 0 Encapsulation type: Ethernet (1) Arrival Time: Jan 24, 2020 17:39:05.795401161 CET [Time shift for this packet: 0.000000000 seconds] Epoch Time: 1579883945.795401161 seconds [Time delta from previous captured frame: 0.073983117 seconds] [Time delta from previous displayed frame: 0.000000000 seconds] [Time since reference or first frame: 0.074041118 seconds] Frame Number: 3 Frame Length: 146 bytes (1168 bits) Capture Length: 146 bytes (1168 bits) [Frame is marked: False] [Frame is ignored: False] [Protocols in frame: eth:ip:tcp:rpc] Ethernet II, Src: Microsof_44:24:d3 (00:0d:3a:44:24:d3), Dst: 12:34:56:78:9a:bc (12:34:56:78:9a:bc) Destination: 12:34:56:78:9a:bc (12:34:56:78:9a:bc) Address: 12:34:56:78:9a:bc (12:34:56:78:9a:bc) .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) Source: Microsof_44:24:d3 (00:0d:3a:44:24:d3) Address: Microsof_44:24:d3 (00:0d:3a:44:24:d3) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) Type: IP (0x0800) Internet Protocol Version 4, Src: 10.0.2.9 (10.0.2.9), Dst: 10.1.0.12 (10.1.0.12) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport)) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00) Total Length: 132 Identification: 0x794c (31052) Flags: 0x02 (Don't Fragment) 0... .... = Reserved bit: Not set .1.. .... = Don't fragment: Set ..0. .... = More fragments: Not set Fragment offset: 0 Time to live: 64 Protocol: TCP (6) Header checksum: 0xab12 [validation disabled] [Good: False] [Bad: False] Source: 10.0.2.9 (10.0.2.9) Destination: 10.1.0.12 (10.1.0.12) Transmission Control Protocol, Src Port: nfs (2049), Dst Port: rndc (953), Seq: 1, Ack: 149, Len: 92 Source port: nfs (2049) Destination port: rndc (953) [Stream index: 0] Sequence number: 1 (relative sequence number) [Next sequence number: 93 (relative sequence number)] Acknowledgment number: 149 (relative ack number) Header length: 20 bytes Flags: 0x018 (PSH, ACK) 000. .... .... = Reserved: Not set ...0 .... .... = Nonce: Not set .... 0... .... = Congestion Window Reduced (CWR): Not set .... .0.. .... = ECN-Echo: Not set .... ..0. .... = Urgent: Not set .... ...1 .... = Acknowledgment: Set .... .... 1... = Push: Set .... .... .0.. = Reset: Not set .... .... ..0. = Syn: Not set .... .... ...0 = Fin: Not set Window size value: 1432 [Calculated window size: 1432] [Window size scaling factor: -1 (unknown)] Checksum: 0x168c [validation disabled] [Good Checksum: False] [Bad Checksum: False] [SEQ/ACK analysis] [Bytes in flight: 92] Remote Procedure Call, Type:Reply XID:0xd17c6210 Fragment header: Last fragment, 88 bytes 1... .... .... .... .... .... .... .... = Last Fragment: Yes .000 0000 0000 0000 0000 0000 0101 1000 = Fragment Length: 88 XID: 0xd17c6210 (3514589712) Message Type: Reply (1) [Program: NFS (100003)] [Program Version: 4] [Procedure: COMPOUND (1)] Reply State: accepted (0) [This is a reply to a request in frame 1] [Time from request: 0.074041118 seconds] Verifier Flavor: AUTH_NULL (0) Length: 0 Accept State: RPC executed successfully (0) Network File System, Ops(2): SEQUENCE PUTROOTFH(NFS4ERR_WRONGSEC) [Program Version: 4] [V4 Procedure: COMPOUND (1)] Status: NFS4ERR_WRONGSEC (10016) Tag: length: 0 contents: Operations (count: 2) Opcode: SEQUENCE (53) Status: NFS4_OK (0) sessionid: 02dc265e9d8dd3776300000000000000 seqid: 0x0000009b slot id: 0 high slot id: 9 target high slot id: 9 status flags: 0x00000000 .... .... .... .... .... .... .... ...0 = SEQ4_STATUS_CB_PATH_DOWN: Not set .... .... .... .... .... .... .... ..0. = SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING: Not set .... .... .... .... .... .... .... .0.. = SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRED: Not set .... .... .... .... .... .... .... 0... = SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED: Not set .... .... .... .... .... .... ...0 .... = SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED: Not set .... .... .... .... .... .... ..0. .... = SEQ4_STATUS_ADMIN_STATE_REVOKED: Not set .... .... .... .... .... .... .0.. .... = SEQ4_STATUS_RECALLABLE_STATE_REVOKED: Not set .... .... .... .... .... .... 0... .... = SEQ4_STATUS_LEASE_MOVED: Not set .... .... .... .... .... ...0 .... .... = SEQ4_STATUS_RESTART_RECLAIM_NEEDED: Not set .... .... .... .... .... ..0. .... .... = SEQ4_STATUS_CB_PATH_DOWN_SESSION: Not set .... .... .... .... .... .0.. .... .... = SEQ4_STATUS_BACKCHANNEL_FAULT: Not set .... .... .... .... .... 0... .... .... = SEQ4_STATUS_DEVID_CHANGED: Not set .... .... .... .... ...0 .... .... .... = SEQ4_STATUS_DEVID_DELETED: Not set Opcode: PUTROOTFH (24) Status: NFS4ERR_WRONGSEC (10016) [Main Opcode: PUTROOTFH (24)] Does this provide any light? Thank you very much for your help! Felix --- Felix Rubio "Don't believe what you're told. Double check."