samba-segfault-when-moving-copy-file-from-a-non-btrfs-partition-to-btrfs-partition
 
windows10 error
===============
 
Error 0x8007003B: An unexpected network error occurred 
 
Samba Server Segfault
======================
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.280760,  0] ../../lib/util/fault.c:179(smb_panic_log)
Dec 22 20:47:51 debian smbd[1260]:   INTERNAL ERROR: Signal 11: Segmentation fault in smbd (smbd[192.168.11) (client [192.168.115.84]) pid 1260 (4.19.3-Debian)
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.281612,  0] ../../lib/util/fault.c:186(smb_panic_log)
Dec 22 20:47:51 debian smbd[1260]:   If you are running a recent Samba version, and if you think this problem is not yet fixed in the latest versions, please consider reporting this bug, s>
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.281640,  0] ../../lib/util/fault.c:191(smb_panic_log)
Dec 22 20:47:51 debian smbd[1260]:   ===============================================================
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.281654,  0] ../../lib/util/fault.c:192(smb_panic_log)
Dec 22 20:47:51 debian smbd[1260]:   PANIC (pid 1260): Signal 11: Segmentation fault in 4.19.3-Debian
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.284925,  0] ../../lib/util/fault.c:303(log_stack_trace)
Dec 22 20:47:51 debian smbd[1260]:   BACKTRACE: 29 stack frames:
Dec 22 20:47:51 debian smbd[1260]:    #0 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(log_stack_trace+0x2e) [0x7f8b826a45be]
Dec 22 20:47:51 debian smbd[1260]:    #1 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(smb_panic+0x9) [0x7f8b826a4859]
Dec 22 20:47:51 debian smbd[1260]:    #2 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(+0x28f1) [0x7f8b826a48f1]
Dec 22 20:47:51 debian smbd[1260]:    #3 /lib/x86_64-linux-gnu/libc.so.6(+0x3bfd0) [0x7f8b82485fd0]
Dec 22 20:47:51 debian smbd[1260]:    #4 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(vfs_offload_token_db_fetch_fsp+0x37) [0x7f8b82a73147]
Dec 22 20:47:51 debian smbd[1260]:    #5 /usr/lib/x86_64-linux-gnu/samba/vfs/btrfs.so(+0x3332) [0x7f8b7dc72332]
Dec 22 20:47:51 debian smbd[1260]:    #6 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(+0xc3140) [0x7f8b82aec140]
Dec 22 20:47:51 debian smbd[1260]:    #7 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smb2_ioctl_network_fs+0x863) [0x7f8b82aed0f3]
Dec 22 20:47:51 debian smbd[1260]:    #8 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_smb2_request_process_ioctl+0x575) [0x7f8b82ae9ee5]
Dec 22 20:47:51 debian smbd[1260]:    #9 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_smb2_request_dispatch+0x1b74) [0x7f8b82ad8a54]
Dec 22 20:47:51 debian smbd[1260]:    #10 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(+0xb0bb1) [0x7f8b82ad9bb1]
Dec 22 20:47:51 debian smbd[1260]:    #11 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_invoke_fd_handler+0x91) [0x7f8b826339e1]
Dec 22 20:47:51 debian smbd[1260]:    #12 /lib/x86_64-linux-gnu/libtevent.so.0(+0xef97) [0x7f8b82639f97]
Dec 22 20:47:51 debian smbd[1260]:    #13 /lib/x86_64-linux-gnu/libtevent.so.0(+0xd2b7) [0x7f8b826382b7]
Dec 22 20:47:51 debian smbd[1260]:    #14 /lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x91) [0x7f8b82632c11]
Dec 22 20:47:51 debian smbd[1260]:    #15 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f8b82632f0b]
Dec 22 20:47:51 debian smbd[1260]:    #16 /lib/x86_64-linux-gnu/libtevent.so.0(+0xd257) [0x7f8b82638257]
Dec 22 20:47:51 debian smbd[1260]:    #17 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_process+0x82c) [0x7f8b82ac6c6c]
Dec 22 20:47:51 debian smbd[1260]:    #18 smbd: client [192.168.115.84](+0x9e8e) [0x55c6361b5e8e]
Dec 22 20:47:51 debian smbd[1260]:    #19 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_invoke_fd_handler+0x91) [0x7f8b826339e1]
Dec 22 20:47:51 debian smbd[1260]:    #20 /lib/x86_64-linux-gnu/libtevent.so.0(+0xef97) [0x7f8b82639f97]
Dec 22 20:47:51 debian smbd[1260]:    #21 /lib/x86_64-linux-gnu/libtevent.so.0(+0xd2b7) [0x7f8b826382b7]
Dec 22 20:47:51 debian smbd[1260]:    #22 /lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x91) [0x7f8b82632c11]
Dec 22 20:47:51 debian smbd[1260]:    #23 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f8b82632f0b]
Dec 22 20:47:51 debian smbd[1260]:    #24 /lib/x86_64-linux-gnu/libtevent.so.0(+0xd257) [0x7f8b82638257]
Dec 22 20:47:51 debian smbd[1260]:    #25 smbd: client [192.168.115.84](main+0x149b) [0x55c6361b329b]
Dec 22 20:47:51 debian smbd[1260]:    #26 /lib/x86_64-linux-gnu/libc.so.6(+0x271ca) [0x7f8b824711ca]
Dec 22 20:47:51 debian smbd[1260]:    #27 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x85) [0x7f8b82471285]
Dec 22 20:47:51 debian smbd[1260]:    #28 smbd: client [192.168.115.84](_start+0x21) [0x55c6361b3b81]
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.286328,  0] ../../source3/lib/util.c:691(smb_panic_s3)
Dec 22 20:47:51 debian smbd[1260]:   smb_panic(): calling panic action [/usr/share/samba/panic-action 1260]
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.352522,  0] ../../source3/lib/util.c:698(smb_panic_s3)
Dec 22 20:47:51 debian smbd[1260]:   smb_panic(): action returned status 0
Dec 22 20:47:51 debian smbd[1260]: [2023/12/22 20:47:51.353235,  0] ../../source3/lib/dumpcore.c:315(dump_core)
Dec 22 20:47:51 debian smbd[1260]:   dumping core in /var/log/samba/cores/smbd
======================

smb.conf shares 
================
[global]
workgroup = WORKGROUP
server string = %h server
dns proxy = no
log level = 0
log file = /var/log/samba/log.%m
max log size = 1000
logging = syslog
panic action = /usr/share/samba/panic-action %d
passdb backend = tdbsam
obey pam restrictions = no
unix password sync = no
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
pam password change = yes
socket options = TCP_NODELAY IPTOS_LOWDELAY
guest account = nobody
load printers = no
disable spoolss = yes
printing = bsd
printcap name = /dev/null
unix extensions = yes
wide links = no
create mask = 0777
directory mask = 0777
use sendfile = yes
aio read size = 1
aio write size = 1
time server = no
wins support = no
disable netbios = yes
multicast dns register = no
server min protocol = SMB2_02
# Special configuration for Apple's Time Machine
fruit:aapl = yes
fruit:copyfile = yes
fruit:nfs_aces = no
#======================= Share Definitions =======================
[BTRFS]
path = /srv/dev-disk-by-id-ata-VBOX_HARDDISK_VBd4bd2101-a37e420f/BTRFS/
guest ok = yes
guest only = no
read only = no
browseable = yes
inherit acls = no
inherit permissions = no
ea support = no
store dos attributes = no
shadow:mountpoint = /srv/dev-disk-by-id-ata-VBOX_HARDDISK_VBd4bd2101-a37e420f/
shadow:snapdir = /srv/dev-disk-by-id-ata-VBOX_HARDDISK_VBd4bd2101-a37e420f/.snapshots/
shadow:basedir = /srv/dev-disk-by-id-ata-VBOX_HARDDISK_VBd4bd2101-a37e420f/BTRFS/
shadow:sort = desc
shadow:format = _%Y%m%dT%H%M%S
shadow:delimiter = _
shadow:snapprefix = ^BTRFS\(@hourly\)\{0,1\}\(@daily\)\{0,1\}\(@weekly\)\{0,1\}\(@monthly\)\{0,1\}\(@yearly\)\{0,1\}$
shadow:localtime = no
dfree command = /usr/sbin/omv-btrfs-dfree
dfree cache time = 30
vfs objects =  btrfs shadow_copy2
printable = no
create mask = 0664
force create mode = 0664
directory mask = 0775
force directory mode = 0775
hide special files = yes
follow symlinks = yes
hide dot files = yes
valid users =
invalid users =
read list =
write list =

[EXT4]
path = /srv/dev-disk-by-uuid-ed19f0b8-eaf3-4fb7-96ac-ef1b04004176/EXT4/
guest ok = yes
guest only = no
read only = no
browseable = yes
inherit acls = no
inherit permissions = no
ea support = no
store dos attributes = no
vfs objects =
printable = no
create mask = 0664
force create mode = 0664
directory mask = 0775
force directory mode = 0775
hide special files = yes
follow symlinks = yes
hide dot files = yes
valid users =
invalid users =
read list =
write list =

====================

Software versions
====================
root@debian:~# uname -a
Linux debian 6.1.0-16-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.67-1 (2023-12-12) x86_64 GNU/Linux

root@debian:~#  dpkg -l | egrep "samba|btrfs"
ii  btrfs-progs                        6.2-1                              amd64        Checksumming Copy on Write Filesystem utilities
ii  libldb2:amd64                      2:2.8.0+samba4.19.3+dfsg-1~bpo12+1 amd64        LDAP-like embedded database - shared library
ii  python3-ldb                        2:2.8.0+samba4.19.3+dfsg-1~bpo12+1 amd64        Python 3 bindings for LDB
ii  python3-samba                      2:4.19.3+dfsg-1~bpo12+1            amd64        Python 3 bindings for Samba
ii  samba                              2:4.19.3+dfsg-1~bpo12+1            amd64        SMB/CIFS file, print, and login server for Unix
ii  samba-ad-provision                 2:4.19.3+dfsg-1~bpo12+1            all          Samba files needed for AD domain provision
ii  samba-common                       2:4.19.3+dfsg-1~bpo12+1            all          common files used by both the Samba server and client
ii  samba-common-bin                   2:4.19.3+dfsg-1~bpo12+1            amd64        Samba common files used by both the server and the client
ii  samba-dsdb-modules:amd64           2:4.19.3+dfsg-1~bpo12+1            amd64        Samba Directory Services Database
ii  samba-libs:amd64                   2:4.19.3+dfsg-1~bpo12+1            amd64        Samba core libraries
ii  samba-vfs-modules:amd64            2:4.19.3+dfsg-1~bpo12+1            amd64        Samba Virtual FileSystem plugins