If i use the -N option with smbtree I get a segmentation fault: e.g. smbtree -S -N =============================================================== INTERNAL ERROR: Signal 11: Segmentation fault in pid 17661 (4.16.5) If you are running a recent Samba version, and if you think this problem is not yet fixed in the latest versions, please co nsider reporting this bug, see https://wiki.samba.org/index.php/Bug_Reporting =============================================================== PANIC (pid 17661): Signal 11: Segmentation fault in 4.16.5 BACKTRACE: 17 stack frames: #0 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0x31) [0xb7df6680] #1 /usr/local/samba/lib/libsamba-util.so.0(smb_panic_log+0x1ad) [0xb7df65f9] #2 /usr/local/samba/lib/libsamba-util.so.0(smb_panic+0x1d) [0xb7df661c] #3 /usr/local/samba/lib/libsamba-util.so.0(+0xb13a) [0xb7df613a] #4 /usr/local/samba/lib/libsamba-util.so.0(+0xb155) [0xb7df6155] #5 linux-gate.so.1(__kernel_sigreturn+0) [0xb7f85564] #6 /lib/i386-linux-gnu/libc.so.6(+0x904f6) [0xb7b1d4f6] #7 /usr/local/samba/lib/private/libreplace-samba4.so(rep_strlcpy+0x1d) [0xb7cae286] #8 ./smbtree(+0x2aed) [0x48baed] #9 /usr/local/samba/lib/libsmbclient.so.0(+0x16662) [0xb7e9b662] #10 /usr/local/samba/lib/libsmbclient.so.0(+0x16886) [0xb7e9b886] #11 /usr/local/samba/lib/libsmbclient.so.0(+0x16b6e) [0xb7e9bb6e] #12 /usr/local/samba/lib/libsmbclient.so.0(+0x17965) [0xb7e9c965] #13 /usr/local/samba/lib/libsmbclient.so.0(+0xcedf) [0xb7e91edf] #14 ./smbtree(main+0x546) [0x48c04c] #15 /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0x106) [0xb7aabe46] #16 ./smbtree(_start+0x31) [0x48b471] smb_panic(): calling panic action [/usr/share/samba/panic-action 17661] smb_panic(): action returned status 0 Can not dump core: corepath not set up --------------------------------------------------------------------------------------------------- I configure it to build using: #! /bin/bash -x DEB_HOST_MULTIARCH=i386_linux_gnu conf_args="\ --prefix=/usr/local/samba \ --sysconfdir=/etc/samba --with-smbpasswd-file=/etc/samba/smbpasswd \ --with-quota \ --with-gpgme \ --without-systemd \ --disable-cups \ --without-libarchive \ --without-ad-dc" ./configure $conf_args make make installl Building on Devuan Chimaera (Debian Bullseye)
This crash is caused by the callback in smbtree.c which tries to strlcpy a nil pointer. It appears other utilities also copied over the same callback code and they will crash as well.
I guess I can't edit - on that strlcpy it's actually using the rep_strlcpy version as shown in the backtrace.
I have successfully reproduced the error on the following Linux distributions: - CentOS Stream 9 (samba 4.18.6-100.el9), - stable Debian 12 bookworm (samba 4.17.10+dfsg-0+deb12u1, 4.17.11+dfsg-0+deb12u1), - unstable Debian Sid (samba 4.19.0+dfsg-1). Steps to reproduce on CentOS: 1. yum install samba samba-client 2. nano /etc/samba/smb.conf 3. I added the line "server min protocol = NT1" after [global]. 4. I saved the file and closed the editor. 5. testparm -s 6.1 If services are not running: systemctl enable --now smb nmb 6.2 otherwise: systemctl restart smb nmb 7. smbtree -N --option="client min protocol = NT1" Steps to reproduce on Debian: 1. apt install samba smbclient 2. nano /etc/samba/smb.conf 3. I added the line "server min protocol = NT1" after [global]. 4. I saved the file and closed the editor. 5. testparm -s 6. systemctl restart smbd nmbd 7. smbtree -N --option="client min protocol = NT1" The segmentation fault is reproduced consistently.