debugging it On Sun, Aug 30, 2009 at 5:51 PM, Aurelien Jarno<aurel...@aurel32.net> wrote: > Hi all, > > I am forwarding this mail from Petr Salinger about a problem with GRUB 2 > loading acpi.ko (and probably other modules). > > In short due to recent changes in the toolchain (not yet identified), > the modules are not page aligned anymore, and contains a .comment > section. This does not causes any problem when using the original > FreeBSD loader, but this causes a kernel panic when used with GRUB 2. > > This is reported in Debian as bug#544305 [1]. > > Don't hesitate to ask if you want more details or tests. > > Thanks, > Aurelien > > [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544305 > > > On Sun, Aug 30, 2009 at 04:40:33PM +0200, Petr Salinger wrote: >> Package: grub2 >> User: debian-...@lists.debian.org >> Usertags: kfreebsd >> X-Debbugs-CC: debian-...@lists.debian.org, grub-devel@gnu.org >> >> >> Hello, >> >> we have some problems with grub2 and loading acpi.ko for FreeBSD kernel. >> With some acpi.ko the kernel panics. The same kernel without acpi.ko >> boots fine. See also thread started by >> http://lists.debian.org/debian-bsd/2009/08/msg00147.html >> >> It is still unclear what the real reason is, >> so far only acpi enable boots are affected. >> It looks like the problem lies in interaction >> between gnu linker and grub bootloader and FreeBSD kernel. >> >> Maybe only GRUB 2 based installation are affected, >> the kfreebsd-loader loads acpi.ko from 7.2-5 fine. >> >> There are 3 different version of acpi.ko, >> compiled by different binutils and/or different linking parameters. >> >> a) acpi_725_fail.ko >> b) acpi_b20090805_fail.ko >> c) acpi_b20090723_works.ko >> >> The only difference between b) and c) is .comment section. >> After "objcopy --remove-section=.comment" it loads also fine. >> >> The interesting might be parts of "readelf -l -S", >> the differences are: >> >> Program Headers: >> a) >> Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align >> LOAD 0x000000 0x00000000 0x00000000 0x54248 0x54248 R E 0x1000 >> LOAD 0x054248 0x00055248 0x00055248 0x02414 0x03c84 RW 0x1000 >> DYNAMIC 0x054248 0x00055248 0x00055248 0x00078 0x00078 RW 0x4 >> GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RWE 0x4 >> >> b), c) >> Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align >> LOAD 0x000000 0x00000000 0x00000000 0x54008 0x54008 R E 0x1000 >> LOAD 0x055000 0x00055000 0x00055000 0x0241c 0x03c8c RW 0x1000 >> DYNAMIC 0x055000 0x00055000 0x00055000 0x00078 0x00078 RW 0x4 >> GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RWE 0x4 >> >> Length and attributes of .comment section >> >> a) [15] .comment PROGBITS 00000000 05665c 000cd8 01 MS 0 >> 0 1 >> b) [15] .comment PROGBITS 00000000 05741c 000cd8 01 MS 0 >> 0 1 >> c) [15] .comment PROGBITS 00000000 05741c 001cef 00 0 >> 0 1 >> >> I will try to attach all acpi.ko to the debian BTS later. >> >> Petr >> >> >> >> -- >> To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org >> with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org >> >> > > -- > Aurelien Jarno GPG: 1024D/F1BCDB73 > aurel...@aurel32.net http://www.aurel32.net > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel >
-- Regards Vladimir 'phcoder' Serbinenko Personal git repository: http://repo.or.cz/w/grub2/phcoder.git _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
