Hi Pavel,
Could you please enable debugging logging (https://wiki.samba.org/index.php/LinuxCIFS_troubleshooting#Enabling_Debugging), reproduce the problem and send us the kernel logs? A network capture of a repro could also be useful (https://wiki.samba.org/index.php/LinuxCIFS_troubleshooting#Wire_Captures).
see the debug output and the pcap file attached. Best regards Moritz
Attachment:
smb_.pcapng
Description: application/vnd.tcpdump.pcap
[Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: CIFS VFS: in cifs_revalidate_dentry_attr as Xid: 5974 with uid: 0 [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: name: \lyxtest [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: Update attributes: \lyxtest inode 0x0000000076dd84e4 count 1 dentry: 0x00000000dac65130 d_time 4300248876 jiffies 4300437570 [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: Getting info on \lyxtest [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: Sending smb: smb_len=332 [Mo Sep 23 14:15:39 2019] fs/cifs/connect.c: RFC1002 header 0x1d8 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 data length 0 offset 0 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 153 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: Calculated size 153 length 152 mismatch mid 30814 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 data length 116 offset 72 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 188 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: Calculated size 188 length 192 mismatch mid 30815 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 124 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: Calculated size 124 length 128 mismatch mid 30816 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2ops.c: add 3 credits total=512 [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=5 mid=30814 state=4 [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=16 mid=30815 state=4 [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=6 mid=30816 state=4 [Mo Sep 23 14:15:39 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:15:39 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:15:39 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: cifs_revalidate_cache: revalidating inode 564914 [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: cifs_revalidate_cache: inode 564914 is unchanged [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: CIFS VFS: leaving cifs_revalidate_dentry_attr (xid = 5974) rc = 0 [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: CIFS VFS: in cifs_atomic_open as Xid: 5975 with uid: 0 [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: parent inode = 0x0000000076dd84e4 name is: foo.txt and dentry = 0x0000000050d144db [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: name: \foo.txt [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: name: \lyxtest\foo.txt [Mo Sep 23 14:15:39 2019] fs/cifs/smb2pdu.c: create/open [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: Sending smb: smb_len=196 [Mo Sep 23 14:15:39 2019] fs/cifs/connect.c: RFC1002 header 0x98 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 data length 0 offset 0 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 153 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: Calculated size 153 length 152 mismatch mid 30817 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=5 mid=30817 state=4 [Mo Sep 23 14:15:39 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:15:39 2019] fs/cifs/smb2pdu.c: Query Info [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: Sending smb: smb_len=108 [Mo Sep 23 14:15:39 2019] fs/cifs/connect.c: RFC1002 header 0x50 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 data length 8 offset 72 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 80 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=16 mid=30818 state=4 [Mo Sep 23 14:15:39 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: Getting info on \lyxtest\foo.txt [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: looking for uniqueid=568378 [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: cifs_revalidate_cache: revalidating inode 568378 [Mo Sep 23 14:15:39 2019] fs/cifs/inode.c: cifs_revalidate_cache: inode 568378 is new [Mo Sep 23 14:15:39 2019] fs/cifs/smb2ops.c: R Lease granted on inode 000000006d274c21 [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: CIFS VFS: leaving cifs_atomic_open (xid = 5975) rc = 0 [Mo Sep 23 14:15:39 2019] fs/cifs/file.c: CIFS VFS: in cifs_open as Xid: 5976 with uid: 0 [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: name: \foo.txt [Mo Sep 23 14:15:39 2019] fs/cifs/dir.c: name: \lyxtest\foo.txt [Mo Sep 23 14:15:39 2019] fs/cifs/file.c: inode = 0x000000006d274c21 file flags are 0x8241 for \lyxtest\foo.txt [Mo Sep 23 14:15:39 2019] fs/cifs/smb2pdu.c: create/open [Mo Sep 23 14:15:39 2019] fs/cifs/transport.c: Sending smb: smb_len=196 [Mo Sep 23 14:15:39 2019] fs/cifs/connect.c: RFC1002 header 0x58 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 88 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: Checking for oplock break [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: oplock level 0x0 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: file id match, oplock break [Mo Sep 23 14:15:39 2019] fs/cifs/connect.c: Received oplock break [Mo Sep 23 14:15:39 2019] fs/cifs/smb2ops.c: None Lease granted on inode 000000006d274c21 [Mo Sep 23 14:15:39 2019] fs/cifs/file.c: CIFS VFS: in cifs_writepages as Xid: 5977 with uid: 0 [Mo Sep 23 14:15:39 2019] fs/cifs/file.c: CIFS VFS: leaving cifs_writepages (xid = 5977) rc = 0 [Mo Sep 23 14:15:39 2019] fs/cifs/file.c: Oplock flush inode 000000006d274c21 rc 0 [Mo Sep 23 14:15:39 2019] fs/cifs/connect.c: RFC1002 header 0x49 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 data length 0 offset 0 [Mo Sep 23 14:15:39 2019] fs/cifs/smb2misc.c: SMB2 len 73 [Mo Sep 23 14:15:52 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:15:52 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:15:52 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:15:52 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:15:52 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:15:52 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:52 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:15:52 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:15:52 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:15:54 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:15:54 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:15:54 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:15:54 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:15:54 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:54 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:15:54 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:15:54 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:15:54 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x98 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 data length 0 offset 0 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 153 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: Calculated size 153 length 152 mismatch mid 30819 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 0 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=5 mid=30819 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/smb2pdu.c: Query Info [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: Sending smb: smb_len=108 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x50 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 data length 8 offset 72 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 80 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=16 mid=30820 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: Getting info on \lyxtest\foo.txt [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: cifs_revalidate_cache: revalidating inode 568378 [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: cifs_revalidate_cache: inode 568378 is unchanged [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: R Lease granted on inode 000000006d274c21 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: leaving cifs_open (xid = 5976) rc = 0 [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: CIFS VFS: in cifs_setattr_nounix as Xid: 5978 with uid: 0 [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: setattr on file foo.txt attrs->iavalid 0xa068 [Mo Sep 23 14:16:09 2019] fs/cifs/dir.c: name: \foo.txt [Mo Sep 23 14:16:09 2019] fs/cifs/dir.c: name: \lyxtest\foo.txt [Mo Sep 23 14:16:09 2019] fs/cifs/smb2pdu.c: Flush [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: Sending smb: smb_len=92 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=7 mid=30821 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: Sending smb: smb_len=108 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x42 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 66 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=17 mid=30822 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: SetFSize for attrs rc = 0 [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: CIFS - CTIME changed [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: Sending smb: smb_len=380 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x160 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 data length 0 offset 0 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 153 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: Calculated size 153 length 152 mismatch mid 30823 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 66 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: Calculated size 66 length 72 mismatch mid 30824 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 124 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: Calculated size 124 length 128 mismatch mid 30825 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 3 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=5 mid=30823 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=17 mid=30824 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=6 mid=30825 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/inode.c: CIFS VFS: leaving cifs_setattr_nounix (xid = 5978) rc = 0 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: in cifs_writepages as Xid: 5979 with uid: 0 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 64 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: leaving cifs_writepages (xid = 5979) rc = 0 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: Flush inode 000000006d274c21 file 00000000a2792fc7 rc 0 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: in _cifsFileInfo_put as Xid: 5980 with uid: 0 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2pdu.c: Close [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: Sending smb: smb_len=92 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x7c [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 124 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=6 mid=30826 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: in cifs_writepages as Xid: 5981 with uid: 0 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 64 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: leaving cifs_writepages (xid = 5981) rc = 0 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: Flush inode 000000006d274c21 file 0000000017700d9b rc 0 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: closing last open instance for inode 000000006d274c21 [Mo Sep 23 14:16:09 2019] fs/cifs/file.c: CIFS VFS: in _cifsFileInfo_put as Xid: 5982 with uid: 0 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2pdu.c: Close [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: Sending smb: smb_len=92 [Mo Sep 23 14:16:09 2019] fs/cifs/connect.c: RFC1002 header 0x7c [Mo Sep 23 14:16:09 2019] fs/cifs/smb2misc.c: SMB2 len 124 [Mo Sep 23 14:16:09 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:09 2019] fs/cifs/transport.c: cifs_sync_mid_result: cmd=6 mid=30827 state=4 [Mo Sep 23 14:16:09 2019] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release [Mo Sep 23 14:16:25 2019] fs/cifs/file.c: CIFS VFS: in cifs_writepages as Xid: 5983 with uid: 0 [Mo Sep 23 14:16:25 2019] fs/cifs/smb2ops.c: add 64 credits total=512 [Mo Sep 23 14:16:25 2019] fs/cifs/smb2ops.c: add 64 credits total=512 [Mo Sep 23 14:16:25 2019] fs/cifs/file.c: CIFS VFS: leaving cifs_writepages (xid = 5983) rc = 0 [Mo Sep 23 14:16:54 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:16:54 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:16:54 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:16:54 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:16:54 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:54 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:54 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:54 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:54 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:54 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:16:56 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:16:56 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:16:56 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:16:56 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:56 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:56 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2ops.c: add 1 credits total=512 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2pdu.c: In echo request [Mo Sep 23 14:16:56 2019] fs/cifs/transport.c: Sending smb: smb_len=72 [Mo Sep 23 14:16:56 2019] fs/cifs/connect.c: RFC1002 header 0x44 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2misc.c: SMB2 len 68 [Mo Sep 23 14:16:56 2019] fs/cifs/smb2ops.c: add 1 credits total=512
