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18 March 2023, 20:33
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#1 |
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Registered User
Join Date: Apr 2020
Location: Roma
Posts: 48
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bsdsocket_library crashes on DEBIAN
Hello gurus!!
A very nasty and easily reproductible bug... - install Xubuntu on a virtual machine - install fs-uae via apt-get - emulate AmigaOS 3.1 + KICK 3.1 with bsdsocket_library = 1 - spawn a TELNETD via INETD (Amitcp 3 Aminet version) - "telnet localhost" on another terminal --> *** buffer overflow detected ***: terminated <--- More info (and tears) here: https://github.com/FrodeSolheim/fs-uae/issues/327 (issue filed by me) Any clues? Many thanks!!! |
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18 March 2023, 23:10
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#2 |
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Registered User
Join Date: Jan 2005
Location: Umeå
Age: 43
Posts: 922
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This will probably not help, but it wont cost you much to try.
Have seen variants of UAE crash from misbehaving Amiga programs before. So I was thinking, that if it is the same telnetd as in this thread http://eab.abime.net/showthread.php?t=112069 it could very well be some secondary issue caused by overrunning the stack and doing random stuff in conjunction with the call over to the host Linux OS TCP/IP-stack. So see if it helps giving telnetd a larger stack, should be possible via the inetd config. Else try something like stackattack on aminet. |
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18 March 2023, 23:55
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#3 |
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Registered User
Join Date: Apr 2020
Location: Roma
Posts: 48
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Thank you!!
Not sure how to specify stack size in AMITCP inetd.conf... Tried with "stackattack_020 MIN=131072" invoked in CLI without success! Last edited by avantgarden; 19 March 2023 at 00:11. |
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19 March 2023, 02:01
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#4 |
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Registered User
Join Date: Apr 2020
Location: Roma
Posts: 48
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Some progress...
Serving services over unpriviledged ports seems to fix the issue. By the way... AmiTcp "services file" won't honor ports numbers specified! It just ignores the directive: telnet 1023/tcp and goes on serving telnet on 23/tcp. What's wrong with my "services" config?? So... newshell TCP:1023 kinda works... It won't crash fs-uae! But with known limitations, e.g. having to add ";" at line end to interact. Last edited by avantgarden; 19 March 2023 at 11:15. |
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19 March 2023, 11:58
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#5 |
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Registered User
Join Date: Apr 2020
Location: Roma
Posts: 48
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Disregard above post!
newshell TCP:23 works OK! What remains to be sorted out is why the VERY SAME setup works on WinUAE while it crashes FS-UAE. (same DH0: folder, same Kickstart, bsdsocket_library = 1) |
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25 March 2023, 12:00
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#6 |
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Registered User
Join Date: Apr 2020
Location: Roma
Posts: 48
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Solved!!!
Thanks Patrik for putting me on the right track!
Offending code was on guest side. I replaced "inetd" binary with a more recent one and problem disappeared. Original - crashing - inetd downloaded from: http://aminet.net/package/comm/net/AmiTCP-bin-30b2 Working inetd downloaded from: http://aminet.net/package/comm/tcp/AmiTCP-demo-40 Thanks again Patrik 
Last edited by avantgarden; 25 March 2023 at 15:20. |
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25 March 2023, 23:46
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#7 |
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Registered User
Join Date: Jan 2005
Location: Umeå
Age: 43
Posts: 922
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Cheers!
Good work finding the problem!
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