on 2015/10/30 16:31, Li Bin wrote:
> In nop_mcount, shdr->sh_offset and welp->r_offset should handle
> endianness properly, otherwise it will trigger Segmentation fault
> if the recordmcount main and file.o have different endianness.
>
For more information, please refer to
https://lkml.org/lkml/2015/10/29/258
> Cc: <sta...@vger.kernel.org> # 3.0+
> Signed-off-by: Li Bin <huawei.li...@huawei.com>
> ---
> scripts/recordmcount.h | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
> index 49b582a..dda9dba 100644
> --- a/scripts/recordmcount.h
> +++ b/scripts/recordmcount.h
> @@ -376,8 +376,9 @@ static void nop_mcount(Elf_Shdr const *const relhdr,
> mcountsym = get_mcountsym(sym0, relp, str0);
>
> if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
> - if (make_nop)
> - ret = make_nop((void *)ehdr, shdr->sh_offset +
> relp->r_offset);
> + if (make_nop) {
> + ret = make_nop((void *)ehdr,
> _w(shdr->sh_offset) + _w(relp->r_offset));
> + }
> if (warn_on_notrace_sect && !once) {
> printf("Section %s has mcount callers being
> ignored\n",
> txtname);
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
