From nobody Tue Feb 10 15:46:39 2026 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 59C2214D2B2 for ; Fri, 12 Jul 2024 09:15:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720775713; cv=none; b=ILuvY+luZHCOblf959jZpLd1xEJPgk/M9nJHB+kDiJiYSfUeE/RVWIS8DBsnkPO5k1pDR8Cr64RZN4z9+6T1AJJ+Pa8gp6uuKA0rK/JTvhAPSLw7HrumND29ab1/bid3DD/u7BLEUCDyWCMWkm/TD4s7XzM3MA7HOjrqpTpDHNc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720775713; c=relaxed/simple; bh=pTBOduqieGq9s/8OWilaP+QEaZ4/vgNeRufCaWxcyDE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fFwbcz59na87ljthnL+H6MSWwDsFKFCPoGNiuxrkjFl/lSXn1YV3l9eme4VnmbTen8iZ/YqkFlYcyg/sQPg7H4syn15WChwKgzx7wE/s4DoyP6Iufpnel0MgN0UeJoEUbm5i/b2YXfCEV4yJ2GLRkoytgXvpOUcrbbVgERM2PQY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8AxG_Ac9JBmJ6EDAA--.10443S3; Fri, 12 Jul 2024 17:15:08 +0800 (CST) Received: from linux.localdomain (unknown [113.200.148.30]) by localhost.localdomain (Coremail) with SMTP id AQAAf8BxXcca9JBmW65FAA--.28188S3; Fri, 12 Jul 2024 17:15:08 +0800 (CST) From: Tiezhu Yang To: Josh Poimboeuf , Peter Zijlstra , Huacai Chen Cc: Xi Ruoyao , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [RFC PATCH 1/4] objtool: Check local label in find_jump_table() Date: Fri, 12 Jul 2024 17:15:03 +0800 Message-ID: <20240712091506.28140-2-yangtiezhu@loongson.cn> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240712091506.28140-1-yangtiezhu@loongson.cn> References: <20240712091506.28140-1-yangtiezhu@loongson.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf8BxXcca9JBmW65FAA--.28188S3 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj93XoW7AF4UtFy7GryDtF43tr17twc_yoW8GF18pF sxG345Kr1YgryxWwnrtFy0gF9xGw4kWrnrXrs7Gr4SvwnrZryFqFWakryay3WDXw4Fva17 Jry5KryUuF48AabCm3ZEXasCq-sJn29KB7ZKAUJUUUUr529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUU9Yb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Gr0_Cr1l84ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AK xVW8Jr0_Cr1UM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07 AIYIkI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWU AVWUtwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7V AKI48JMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMxCIbckI1I0E14v2 6r1Y6r17MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17 CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF 0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIx AIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8JbIYCTnIWIev Ja73UjIFyTuYvjxUc0eHDUUUU Content-Type: text/plain; charset="utf-8" Signed-off-by: Tiezhu Yang --- tools/objtool/check.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 0a33d9195b7a..c89c0d8c35d7 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2085,6 +2085,7 @@ static struct reloc *find_jump_table(struct objtool_f= ile *file, { struct reloc *table_reloc; struct instruction *dest_insn, *orig_insn =3D insn; + unsigned long offset; =20 /* * Backward search using the @first_jump_src links, these help avoid @@ -2108,7 +2109,18 @@ static struct reloc *find_jump_table(struct objtool_= file *file, table_reloc =3D arch_find_switch_table(file, insn); if (!table_reloc) continue; - dest_insn =3D find_insn(file, table_reloc->sym->sec, reloc_addend(table_= reloc)); + + if (table_reloc->sym->type =3D=3D STT_SECTION) { + offset =3D reloc_addend(table_reloc); + } else if (table_reloc->sym->local_label) { + offset =3D table_reloc->sym->offset; + } else { + WARN("unexpected relocation symbol type in %s: %d", + table_reloc->sec->name, table_reloc->sym->type); + return NULL; + } + + dest_insn =3D find_insn(file, table_reloc->sym->sec, offset); if (!dest_insn || !insn_func(dest_insn) || insn_func(dest_insn)->pfunc != =3D func) continue; =20 --=20 2.42.0