persist + tty is broken in 2.4.3

persist + tty is broken in 2.4.3

[Marco d'Itri]

Multiple users reported (Debian bugs #306820, #276550 and private
reports) that ppp 2.4.3 breaks the persist option when used with a modem
connection (I cannot reproduce the bug with my PPPoATM connection and I
only received reports from modem users).
I believe that this may be related to the multilink changes, because
CVS 20040428 still works.
Any help is welcome, because I do not know how to debug this.

These are the common failure modes:

Apr 23 11:18:07 saturn pppd[2233]: Connection terminated.
Apr 23 11:18:07 saturn pppd[2233]: tcflush failed: Bad file descriptor
Apr 23 11:18:07 saturn pppd[2233]: Modem hangup
Apr 23 11:18:17 saturn pppd[2233]: tcsetattr: Invalid argument (line 964)
Apr 23 11:18:18 saturn pppd[2233]: tcsetattr: Invalid argument (line 1003)
Apr 23 11:18:18 saturn pppd[2233]: Exit.

May  2 09:31:14 shed pppd[8131]: Starting link
May  2 09:31:14 shed pppd[8131]: tcgetattr: No such device or address (line 909)
May  2 09:31:15 shed pppd[8131]: tcsetattr: No such device or address (line 1003)
May  2 09:31:15 shed pppd[8131]: Exit.

-- 
ciao,
Marco

Re: persist + tty is broken in 2.4.3

[Jacek Kawa]

Marco d'Itri wrote:

[...]
> I believe that this may be related to the multilink changes, because
> CVS 20040428 still works.
> Any help is welcome, because I do not know how to debug this.
> 
> These are the common failure modes:
> 
> Apr 23 11:18:07 saturn pppd[2233]: Connection terminated.
> Apr 23 11:18:07 saturn pppd[2233]: tcflush failed: Bad file descriptor
> Apr 23 11:18:07 saturn pppd[2233]: Modem hangup
> Apr 23 11:18:17 saturn pppd[2233]: tcsetattr: Invalid argument (line 964)
> Apr 23 11:18:18 saturn pppd[2233]: tcsetattr: Invalid argument (line 1003)
> Apr 23 11:18:18 saturn pppd[2233]: Exit.
> 
> May  2 09:31:14 shed pppd[8131]: Starting link
> May  2 09:31:14 shed pppd[8131]: tcgetattr: No such device or address (line 909)
> May  2 09:31:15 shed pppd[8131]: tcsetattr: No such device or address (line 1003)
> May  2 09:31:15 shed pppd[8131]: Exit.

You may also find it informative (I hope so) to confront it with previous 
report about it here, with strace log included:

http://marc.theaimsgroup.com/?l=linux-ppp&m\x111165758709183&w=2

bye

-- 
Jacek Kawa  **Jeste ze clovek nikdy nevi/co ho ceka... [Jarek Nohavica]**