kern/83375: Fatal trap 12 cloning a pty

Sven Berkvens-Matthijsse sven at
Fri Jul 15 07:20:07 GMT 2005

The following reply was made to PR kern/83375; it has been noted by GNATS.

From: Sven Berkvens-Matthijsse <sven at>
To: bug-followup at
Cc: marcolz at
Subject: Re: kern/83375: Fatal trap 12 cloning a pty
Date: Fri, 15 Jul 2005 09:16:53 +0200

 Following up on this: the t_line member of the struct tty that the
 ttyld_modem() macro is looking at (which should be an integer from 0
 upto but not including nlinesw, which is 9 on this system), is
 actually an address of some sort. The t_line integer's value is
 0xc5f0cd48. I have no idea how this could ever get there, I can't find
 anything in the kernel code that could cause this, at least, not by
 setting t_line itself. Perhaps the tty structure is corrupted by a
 function that is not supposed to do anything with t_line at all.

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