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authorlibin <huawei.libin@huawei.com>2015-11-03 08:58:47 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-01-31 11:23:40 -0800
commitd17367a77457f556e7614f2e80db5d5a902e1268 (patch)
tree547eb4d5b22af5095e459b2fb94817448c53c27e
parent1f6d936d33f4b5875ca3aed0e8084e0fb56d4e0d (diff)
recordmcount: Fix endianness handling bug for nop_mcount
commit c84da8b9ad3761eef43811181c7e896e9834b26b upstream. 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 Signed-off-by: Li Bin <huawei.libin@huawei.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--scripts/recordmcount.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
index 49b582a225b0..b9897e2be404 100644
--- a/scripts/recordmcount.h
+++ b/scripts/recordmcount.h
@@ -377,7 +377,7 @@ static void nop_mcount(Elf_Shdr const *const relhdr,
if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
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) {
printf("Section %s has mcount callers being ignored\n",
txtname);