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Re: wip/wsjtx does not decode FT8 radio signals.





El 23/12/25 a las 9:02, Ramiro Aceves escribió:


El 23/12/25 a las 7:22, Michael van Elst escribió:
ea1abz%gmail.com@localhost (Ramiro Aceves) writes:

#0  0x000078935bb7eeea in _lwp_kill () from /usr/lib/libc.so.12
#1  0x000078935bb846e0 in abort () from /usr/lib/libc.so.12
#2  0x000078935c022fdc in __enable_execute_stack (addr=<optimized out>)
at enable-execute-stack.c:77

This sounds like the program requires an executable stack. You
may need to allow that by patching the binary with something
like:

paxctl +m /path/to/binary

This will disable the protection for the process running that
binary.


Hello Michael, you were right! It does not crash now with paxctl +m in / usr/pkg/bin/jt9 binary


netbsd-nuc# paxctl  /usr/pkg/bin/jt9
PaX flags:
   m: mprotect(2) restrictions, explicit disable
netbsd-nuc#

decoder does not crash now:

netbsd-nuc$ jt9 -8 170923_082000.wav
<DecodeFinished>   0   0        0

But unfortunately WSJTX does not show decodes when feeding the program with test audio files.

I will continue investigating.

Regards.


Hi Michael,

Sorry, I think I was using wrong audio files. Text decoder works now after your paxctl +m tweak.


netbsd-nuc$ jt9 -8 210703_133430.wav

Program received signal SIGABRT: Process abort signal.

Backtrace for this error:
#0  0x6f9ed717f61f in ???
#1  0x6f9ed717eeea in ???
[1]   Abort trap (core dumped) jt9 -8 210703_133430.wav

netbsd-nuc# paxctl +m /usr/pkg/bin/jt9


netbsd-nuc$ jt9 -8 210703_133430.wav
133430  15  0.3 2571 ~  W1FC F5BZB -08
133430  -2 -0.8 1197 ~  CQ F5RXL IN94
133430  13 -0.1 2157 ~  WM3PEN EA6VQ -09
133430 -13  0.3  590 ~  K1JT HA0DU KN07
133430  -7  0.1  723 ~  A92EE F5PSR -14
133430  -3 -0.1 2695 ~  K1BZM EA3GP -09
133430 -13  0.3  641 ~  N1JFU EA6EE R-07
133430  -3  0.2  466 ~  N1PJT HB9CQK -10
133430  -7  0.4 2734 ~  W1DIG SV9CVY -14
133430 -16  0.1 1649 ~  K1JT EA3AGB -15
133430 -16  0.3  400 ~  W0RSJ EA3BMU RR73
<DecodeFinished>   0  11        0


But sadly live decoding do not work at all. I will continue investigating.



Thanks.
Ramiro.








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