On 3/6/16, Dimitry Andric <d...@freebsd.org> wrote:
> Author: dim
> Date: Sun Mar 6 15:57:43 2016
> New Revision: 296428
> URL: https://svnweb.freebsd.org/changeset/base/296428
>
> Log:
> Since kernel modules can now contain sections of type SHT_AMD64_UNWIND,
> the boot loader should not skip over these anymore while loading images.
> Otherwise the kernel can still panic when it doesn't find the .eh_frame
> section belonging to the .rela.eh_frame section.
>
> Unfortunately this will require installing boot loaders from sys/boot
> before attempting to boot with a new kernel.
Could you please add a note about this to UPDATING file?
>
> Reviewed by: kib
> MFC after: 2 weeks
> X-MFC-With: r296419
>
> Modified:
> head/sys/boot/common/load_elf_obj.c
>
> Modified: head/sys/boot/common/load_elf_obj.c
> ==============================================================================
> --- head/sys/boot/common/load_elf_obj.c Sun Mar 6 14:37:49 2016
> (r296427)
> +++ head/sys/boot/common/load_elf_obj.c Sun Mar 6 15:57:43 2016
> (r296428)
> @@ -221,6 +221,9 @@ __elfN(obj_loadimage)(struct preloaded_f
> switch (shdr[i].sh_type) {
> case SHT_PROGBITS:
> case SHT_NOBITS:
> +#if defined(__i386__) || defined(__amd64__)
> + case SHT_AMD64_UNWIND:
> +#endif
> lastaddr = roundup(lastaddr, shdr[i].sh_addralign);
> shdr[i].sh_addr = (Elf_Addr)lastaddr;
> lastaddr += shdr[i].sh_size;
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