Failed to bind socket

[jobsidi]

Linux 6.2.16-19-pve #1 SMP PREEMPT_DYNAMIC PMX 6.2.16-19 (2023-10-24T12:07Z) x86_64 GNU/Linux
im getting multiply strings
kernel: ksmbd: Failed to bind socket: -98 kernel: ksmbd: Failed to shutdown socket: -107
default config. No additional info in logs. Also unable to bind interfaces, daemon dosnt start if i set it active

[namjaejeon]

-98 is EADDRINUSE. this address is already used.

If samba is running on your system, Please try to start ksmbd after stopping smbd(samba).

[jobsidi]

smbd was uninstalled automatically when i installed ksmbd. bookworm. Address do you mean ports?

[namjaejeon]

Yes. tcp port 445.
You can change it by adding "tcp port = " parameter in global section of ksmbd.conf.

[jobsidi]

no result

[namjaejeon]

Please find the root-cause after getting information from googling. Problem is caused by EADDRINUSE error.

[jobsidi]

Already tried to google. Nothing except string in sources. Also i didnt find any possibility to activate debug log in ksmdb. Also i tested performance with crystalmark and i see absolutely no difference between samba 4 and ksmbd

[oleksandrl5]

Have the same issue. Cant bind to ipv4 adresses

[namjaejeon]

@oleksandrl5 Okay, Can you check the code and debug(create_socket() in transport_tcp.c) ?

[namjaejeon]

@oleksandrl5 Can you show me print log after applying this change ? When I have tested it after turning IPV6 off, ksmbd work fine.

diff --git a/transport_tcp.c b/transport_tcp.c
index 1d3ddba..bd45d29 100644
--- a/transport_tcp.c
+++ b/transport_tcp.c
@@ -459,10 +459,12 @@ static int create_socket(struct interface *iface)
 
        ret = sock_create(PF_INET6, SOCK_STREAM, IPPROTO_TCP, &ksmbd_socket);
        if (ret) {
+               pr_err("ipv6 ret : %d\n", ret);
                if (ret != -EAFNOSUPPORT)
                        pr_err("Can't create socket for ipv6, fallback to ipv4: %d\n", ret);
                ret = sock_create(PF_INET, SOCK_STREAM, IPPROTO_TCP,
                                  &ksmbd_socket);
+               pr_err("ipv4 ret : %d\n", ret);
                if (ret) {
                        pr_err("Can't create socket for ipv4: %d\n", ret);
                        goto out_clear;

[ItsFated]

In my case, after all Docker containers are started. there is a virtual bridge can't bind the port.
root@home:~# netstat -tuln | grep :445
tcp6 0 0 :::445 :::* LISTEN
tcp6 0 0 :::445 :::* LISTEN
tcp6 0 0 :::445 :::* LISTEN

root@home:~# ss -tuln | grep :445
tcp LISTEN 0 16 *%br-7607a822f471:445 :
tcp LISTEN 0 16 *%docker0:445 :
tcp LISTEN 0 16 *%vmbr0:445 :

There are many failue logs in dmesg, KSMBD seems to have always wanted to bind to the network bridge, but failed many times:
[ 266.039590] ksmbd: Failed to bind socket: -98
[ 266.039594] ksmbd: Failed to shutdown socket: -107
[ 266.039690] br-7607a822f471: port 17(veth79c9f3a) entered blocking state
[ 266.039695] br-7607a822f471: port 17(veth79c9f3a) entered forwarding state
[ 266.134517] eth0: renamed from veth8f45087
[ 266.148610] ksmbd: Failed to bind socket: -98
[ 266.148614] ksmbd: Failed to shutdown socket: -107
[ 266.148866] br-7607a822f471: port 18(veth081387e) entered blocking state
[ 266.148870] br-7607a822f471: port 18(veth081387e) entered forwarding state
[ 266.175528] eth0: renamed from vethbddc876
[ 266.191716] ksmbd: Failed to bind socket: -98
[ 266.191722] ksmbd: Failed to shutdown socket: -107
[ 266.191815] br-7607a822f471: port 19(veth6617f43) entered blocking state
[ 266.191820] br-7607a822f471: port 19(veth6617f43) entered forwarding state
[ 266.208499] eth0: renamed from vethc05cc5b
[ 266.219605] ksmbd: Failed to bind socket: -98
[ 266.219613] ksmbd: Failed to shutdown socket: -107
[ 266.219939] br-7607a822f471: port 20(veth9b1952d) entered blocking state
[ 266.219944] br-7607a822f471: port 20(veth9b1952d) entered forwarding state
[ 266.299417] br-7607a822f471: port 21(veth4f2dede) entered blocking state
[ 266.299425] br-7607a822f471: port 21(veth4f2dede) entered disabled state
[ 266.299441] veth4f2dede: entered allmulticast mode
[ 266.299514] veth4f2dede: entered promiscuous mode
[ 266.771485] eth0: renamed from vethbde197d
[ 266.779617] ksmbd: Failed to bind socket: -98
[ 266.779621] ksmbd: Failed to shutdown socket: -107
[ 266.779872] br-7607a822f471: port 21(veth4f2dede) entered blocking state
[ 266.779876] br-7607a822f471: port 21(veth4f2dede) entered forwarding state

how to fix it, or i can ignore the failue? can ksmbd only to bind one bridge?

[namjaejeon]

@ItsFated Can you share how to reproduce it on ubuntu ?

[ItsFated]

My system is proxmox.
Simply create a virtual bridge with Docker and attach a container (in my case there are many containers) to it, the state of the bridge will change and the fault log will be displayed. Here is a part of my compose configs, one docker network bridge and one container:

name: all_containers
services:
    qbittorrent:
        image: lscr.io/linuxserver/qbittorrent:latest
        container_name: qbittorrent
        environment:
            - PUID=1000
            - PGID=1000
            - WEBUI_PORT=8080
            - TORRENTING_PORT=6881
        volumes:
            - /home/jason/Downloads:/downloads
        ports:
            - 8080:8080
            - 6881:6881
            - 6881:6881/udp
        networks:
          - all
        restart: unless-stopped
networks:
  all:
    ipam:
      driver: default
      config:
        - subnet: 172.28.0.0/24
          ip_range: 172.28.0.0/24
          gateway: 172.28.0.1

[mmakassikis]

can you try binding to specific interfaces only and check if the issue is still present ?
In the global section of the config file, add a "interfaces =" parameter. For example:

[global]
interfaces = br0 br1
bind interfaces only = yes