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Date: Sun, 24 Aug 2003 10:06:35 -0700
From: Kris Kennaway <kris@obsecurity.org>
To: Martin Larsson <sopppp@home.se>
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cc: freebsd-security@freebsd.org
Subject: Re: ibm fstack protector
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On Sun, Aug 24, 2003 at 04:18:00PM +0200, Martin Larsson wrote:
> yo, ive been using the fstack protector for a while now and it worked
> fine until i was gonna compile 4.8p3 then i got these errors,
>=20
> sio.o(.text+0x18b7): undefined reference to `__guard'
> sio.o(.text+0x1da9): undefined reference to `__guard'
> sio.o(.text+0x1db9): undefined reference to `__stack_smash_handler'
> vga_isa.o: In function `isavga_probe':
> vga_isa.o(.text+0x10): undefined reference to `__guard'
> vga_isa.o(.text+0xb9): undefined reference to `__guard'
> vga_isa.o(.text+0xc9): undefined reference to `__stack_smash_handler'
> vga_isa.o(.text+0xc9): undefined reference to `__stack_smash_handler'
> *** Error code 1
>=20
> Stop in /usr/obj/usr/src/sys/FJUTTSI.
> *** Error code 1
>=20
> Stop in /usr/src.
> *** Error code 1
>=20
> Stop in /usr/src.
>=20
> anyone succesfully compiled 4.8p3 with fstack protection?

It looks like you don't have the full /usr/src patch installed.  The
sys/libkern/stack_smash_handler.c file is supposed to provide these
symbols.

Kris

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