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Date: Tue, 3 Nov 2015 08:58:47 +0800 From: libin <huawei.libin@...wei.com> To: Steven Rostedt <rostedt@...dmis.org> CC: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>, <will.deacon@....com>, <lkp@...el.com>, <catalin.marinas@....com>, <takahiro.akashi@...aro.org>, <zhouchengming1@...wei.com>, <xiexiuqi@...wei.com>, <guohanjun@...wei.com>, <linux-kernel@...r.kernel.org>, <dingtianhong@...wei.com>, <linux-arm-kernel@...ts.infradead.org> Subject: [PATCH] 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. Cc: <stable@...r.kernel.org> # 3.0+ Signed-off-by: Li Bin <huawei.libin@...wei.com> --- scripts/recordmcount.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h index 49b582a..b9897e2 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); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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