A patch was provided: https://lore.kernel.org/linux- cifs/20190321045902.14326-1-lsahl...@redhat.com/t/#u
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1821053 Title: [disco] [5.0.0-7.8] can't mount guest cifs share Status in linux package in Ubuntu: Confirmed Bug description: Hi, with a simple smb.conf setup like this: [pub] path = /pub guest ok = yes The following mount command fails when the running kernel is 5.0.0-7: root@ubuntu:~# dmesg -C root@ubuntu:~# mount //localhost/pub /mnt -o guest mount error(13): Permission denied Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) root@ubuntu:~# dmesg [ 178.469307] CIFS: Attempting to mount //localhost/pub [ 178.469343] No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount. [ 178.481741] CIFS VFS: failed to connect to IPC (rc=-13) [ 178.485272] CIFS VFS: cifs_mount failed w/return code = -13 samba server logs, in debug 5, show: [2019/03/20 17:25:19.365445, 0] ../../libcli/smb/smb2_signing.c:169(smb2_signing_check_pdu) Bad SMB2 signature for message [2019/03/20 17:25:19.365524, 0] ../../lib/util/util.c:508(dump_data) [0000] A6 62 5F 50 9C D7 31 42 14 34 52 9F AA 49 C8 31 .b_P..1B .4R..I.1 [2019/03/20 17:25:19.365562, 0] ../../lib/util/util.c:508(dump_data) [0000] 31 37 12 A2 D5 D4 59 99 0B 63 C5 21 EB 86 70 74 17....Y. .c.!..pt [2019/03/20 17:25:19.369055, 0] ../../libcli/smb/smb2_signing.c:169(smb2_signing_check_pdu) Bad SMB2 signature for message [2019/03/20 17:25:19.369092, 0] ../../lib/util/util.c:508(dump_data) [0000] 23 2C 4F 10 0E 4E 46 2E 8A 5B E3 70 0F B3 D3 FB #,O..NF. .[.p.... [2019/03/20 17:25:19.369120, 0] ../../lib/util/util.c:508(dump_data) [0000] 50 F7 C6 8A 6E BC B2 B7 1C 2F 43 30 90 6A 25 CA P...n... ./C0.j%. With kernel 4.19.0-12-generic, the exact same system, the command works: root@ubuntu:~# dmesg -C root@ubuntu:~# mount //localhost/pub /mnt -o guest root@ubuntu:~# dmesg [ 277.745885] FS-Cache: Loaded [ 277.768408] FS-Cache: Netfs 'cifs' registered for caching [ 277.768495] Key type cifs.spnego registered [ 277.768498] Key type cifs.idmap registered [ 277.768707] No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount. root@ubuntu:~# mount -t cifs //localhost/pub on /mnt type cifs (rw,relatime,vers=default,sec=none,cache=strict,uid=0,noforceuid,gid=0,noforcegid,addr=127.0.0.1,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=1048576,wsize=1048576,echo_interval=60,actimeo=1) root@ubuntu:~# uname -r 4.19.0-12-generic Just looking at the list of patches queued up for the next upstream kernel release, at https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.0, this one looks promising: https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.0/cifs-do-not-skip-smb2-message-ids-on-send-failures.patch I can easily test a new kernel for you. --- ProblemType: Bug AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Mar 20 18:04 seq crw-rw---- 1 root audio 116, 33 Mar 20 18:04 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.10-0ubuntu23 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A DistroRelease: Ubuntu 19.04 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: QEMU Standard PC (i440FX + PIIX, 1996) Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-7-generic root=PARTUUID=e2b8e290-77c5-437c-a78d-b59424881b58 ro console=tty1 console=ttyS0 ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0 RelatedPackageVersions: linux-restricted-modules-5.0.0-7-generic N/A linux-backports-modules-5.0.0-7-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' Tags: disco uec-images Uname: Linux 5.0.0-7-generic x86_64 UnreportableReason: This report is about a package that is not installed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video _MarkForUpload: False dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.10.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-bionic dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-bionic dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821053/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
