Date: Mon, 9 Nov 2009 10:21:25 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: bootstrap loader problem Message-ID: <200911091021.26160.jhb@freebsd.org> In-Reply-To: <4AF73E2B.9010404@siad.net> References: <4AF73E2B.9010404@siad.net>
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On Sunday 08 November 2009 4:54:51 pm Don L. Belcher wrote: > John Baldwin wrote: > > On Sunday 01 November 2009 7:35:55 pm Don L. Belcher wrote: > > > >> New Dell 1737 laptop > >> > >> The following error occurs with versions 7.2 release and later > >> this message is from 8 RC2. All versions tried with 7.1 release and > >> earlier work fine, I tried 7.1, 7.2 and 6.4. I rebuilt 8 RC2 CD with > >> "loader" > >> from 7.1 release and the 8 RC2 comes up O.K. now. > >> I have two questions: > >> 1) is anybody familiar with this problem > >> 2) is it ok to install 8 RC2 using the 7.1 "loader" > >> > >> BTX loader 1.00 BTX version is 1.02 > >> Consoles: internal video/keyboard > >> panic: free: guard1 fail @ 0xbb797074 from (diretory path to) > >> common/console.c:94 > >> --> Press a key (etc) > >> > > > > I have not seen that before. Can you try compiling a loader on 8 that > > doesn't include GPT support? (cd /sys/boot; make > > LOADER_NO_GPT_SUPPORT=yes) > > > Sorry it took so long. I installed to hard drive and the "loader" does > not exhibit the problem. > The problem only shows up when booting from CD ROM. The boot from CD ROM > works > OK using the "loader" built with make LOADER_NO_GPT_SUPPORT=yes Bizarre, so somehow the BIOS for your CD drive is choking when the loader uses memory > 1MB for its malloc(). Hmmm, I know other people tested that change because I had to add bounce buffering to the CD drivers in the loader for buffers > 1MB. I could perhaps have a bug in the bounce buffering code that is trashing malloc's internal state if it does a buffer overrun of some sort. -- John Baldwin
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