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smbd crashes when called with "smb ports = 0"
The smb.conf generated by qemu-kvm contains a "smb ports = 0" directive. This
causes at least version 3.6.4 of Samba to crash with
[0] vostro:/tmp/qemu-smb.6836-0# smbd -i -s smb.conf
Unable to setup corepath for smbd: Operation not permitted
smbd version 3.6.4 started.
Copyright Andrew Tridgell and the Samba Team 1992-2011
open_sockets_smbd: No sockets available to bind to.
===============================================================
Abnormal server exit: open_sockets_smbd() failed
===============================================================
BACKTRACE: 6 stack frames:
#0 smbd(log_stack_trace+0x1a) [0x7fe50c14f8ba]
#1 smbd(+0x6a0743) [0x7fe50c3bd743]
#2 smbd(+0x6a0a41) [0x7fe50c3bda41]
#3 smbd(main+0xa52) [0x7fe50be26d42]
#4 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fe508ac0ead]
#5 smbd(+0x10a6b9) [0x7fe50be276b9]
Changing "smb ports" to a non-privilileged port works around the issue.
I'd like to help fix this, but I am not sure what qemu-kvm's intention is here.
Zero is not a valid port, and the smb.conf manpage does not describe any
special meaning of zero here. I found that previous versions of samba apparently
did not bind to any port if zero was specified - but in that case, how is
qemu communicating with samba?
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