Messages in this thread |  | | Date | Mon, 18 Sep 2000 11:16:55 -0700 (PDT) | From | David Ciemiewicz <> | Subject | Re: PROBLEM: Segmentation fault [SIGSEGV] reading from /proc/tty/driv er/serial |
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Thanks for everyone looking into this problem. I'm going to toss out some additional information which I think may be extremely important in any discussions surrounding the serial drivers: what is and is not actually configured in the kernel. :^)
While I had 10 years of experience with the IRIX source trees at SGI, I'm on a steep learning curve for linux and still learning how to reproduce the exact kernel configuration of my running 2.2.14 system and a 2.2.17 kernel. (It would be extremely useful to have a pointer to a tool which would duplicate the configs rather than going through the manual process of configuring the kernel build).
That said, dmesg on my 2.2.14 kernel shows the following serial device configuration information:
Detected PS/2 Mouse Port. Serial driver version 4.27 with MANY_PORTS MULTIPORT SHARE_IRQ enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A pty: 256 Unix98 ptys configured
So, CONFIG_HUB6 is a red herring for my particular case but is still a potential hole for for any case where the sstate->info pointer is null.
So, if any attempts to reproduce my problems with 2.2.17 don't have MANY_PORTS, MULTIPORT, and SHARE_IRQ enabled, then we are trying to compare oranges and lemons.
Like I said, if anyone has a quick and dirty way to gen a new config file that identically reproduces my 2.2.14 kernel (a RTFM pointer will do :^), I'll work through the details of trying to reproduce the problems with 2.2.17.
Thanks for everyone's help on this.
--- Ciemo
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