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recordmcount: Fix endianness handling bug for nop_mcount 

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.

Link: http://lkml.kernel.org/r/563806C7.7070606@huawei.com

Cc: <stable@vger.kernel.org> # 3.0+
Signed-off-by: Li Bin <huawei.libin@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
libin 2015-11-03 08:58:47 +08:00 committed by Steven Rostedt
parent a15920bea0
commit c84da8b9ad
1 changed files with 1 additions and 1 deletions
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2
scripts/recordmcount.h
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@ -377,7 +377,7 @@ static void nop_mcount(Elf_Shdr const *const relhdr,
if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) { if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
if (make_nop) if (make_nop)
ret = make_nop((void *)ehdr, shdr->sh_offset + relp->r_offset); ret = make_nop((void *)ehdr, _w(shdr->sh_offset) + _w(relp->r_offset));
if (warn_on_notrace_sect && !once) { if (warn_on_notrace_sect && !once) {
printf("Section %s has mcount callers being ignored\n", printf("Section %s has mcount callers being ignored\n",
txtname); txtname);