Date: Thu, 2 Dec 2004 11:00:14 +0000 From: Sergey Lyubka <valenok@gmail.com> To: John Baldwin <jhb@FreeBSD.org>, freebsd-hackers@freebsd.org Subject: /boot/boot problem Message-ID: <72c3a957041202030057e33861@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
Hi John, thanks for commiting my previous boot2.c patch. I would appreciate any hint about the following problem. I am using 5.3, sources from 1 Dec 2004. The environment I am using is this: ATA disk has one partition with one file, /kernel. /kernel has MFS root filesystem. there is no /boot/loader, /kernel is boot by the first stage loader (/boot/boot). So, the problem is: 1. when /kernel is kgzipped, It says 'Invalid format'. that means, inflate() could not correctly unzip the kernel. 2. when /kernel is not kgzipped, boot crashes: int=06 err=0 efl=10002 eip=c0432540 eax=c0432540 ebx=c2152600 ecx=18 edx=a050001e esi=947a4 edi=c0432540 ebp=7 esp=9e6f0 cs:eip= ff ff ff ff ff .... (all ff) ss:eip=69 95 00 00 00 00 00 80 1c 00 50 00 00 00 00 00 objdump -d kernel shows, that eip c0432540 is exactly where kernel's .text segment starts: c0432540 <.text>: c0432540: 66 c7 05 72 04 00 00 movw $0x1234,0x472 c0432547: 34 12 c0432549: 55 push %ebp So it looks like that kernel was mapped wrong ? 3. The craziest thing is that *sometimes* it works! I do build kernels again and again, without cvsup-ing the sources, and sometimes it works, sometimes not. Any comment, hint etc would be very appreciated. sergey
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?72c3a957041202030057e33861>