Hi, I built a Multiboot2 compliant kernel, but GRUB2 (current CVS) crashes when loading (not booting) it (i.e. as soon as I execute the multiboot command on it). I assert this is a bug in GRUB2, as it should print out an error message if there's something wrong with my image.
I traced the bug back to the grub_elf32_load_segment() function in kern/elf.c: GRUB2 correctly detects the Multiboot2 and ELF32 headers and tries to load the first (and only) loadable segment of the ELF32 program header, which it also correctly detects (debug printout shows correct addresses). It crashes while trying to call the load_hook function pointer, which is given as a parameter and should be pointing to grub_mb2_arch_elf32_hook() in loader/i386/pc/multiboot2.c and that pointer seems to be invalid. I tried to print out the memory address of the grub_mb2_arch_elf32_hook() function from within grub_elf32_load_segment() for comparison, but this makes grub-mkimage segfault, so I cannot generate a test GRUB2 image including the printout. I'm stuck at this point and would like to ask the knowledgable GRUB2 developers to have a look at this bug. Thanks, Simon _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
