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Tue, 7 Jul 2020 11:46:26 +0000 From: Peng Hao To: catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Hao Subject: [PATCH] arm64/module-plts: Consider the special case where plt_max_entries is 0 Date: Tue, 7 Jul 2020 07:46:08 -0400 Message-Id: <20200707114608.24197-1-richard.peng@oppo.com> X-Mailer: git-send-email 2.18.4 Content-Type: text/plain X-ClientProxiedBy: HK2PR0401CA0011.apcprd04.prod.outlook.com (2603:1096:202:2::21) To HKAPR02MB4291.apcprd02.prod.outlook.com (2603:1096:203:d3::12) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from PC-Hyman.adc.com (58.252.5.74) by HK2PR0401CA0011.apcprd04.prod.outlook.com (2603:1096:202:2::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3153.21 via Frontend Transport; Tue, 7 Jul 2020 11:46:25 +0000 X-Mailer: git-send-email 2.18.4 X-Originating-IP: [58.252.5.74] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 673dba95-0614-47c2-f603-08d8226b6154 X-MS-TrafficTypeDiagnostic: HK0PR02MB3475: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2000; 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WARNING: CPU: 200 PID: 3000 at arch/arm64/kernel/module-plts.c:97 module_emit_plt_entry+0xa4/0x150 Signed-off-by: Peng Hao --- arch/arm64/kernel/module-plts.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/module-plts.c b/arch/arm64/kernel/module-plts.c index 65b08a74aec6..1868c9ac13f2 100644 --- a/arch/arm64/kernel/module-plts.c +++ b/arch/arm64/kernel/module-plts.c @@ -79,7 +79,8 @@ u64 module_emit_plt_entry(struct module *mod, Elf64_Shdr *sechdrs, int i = pltsec->plt_num_entries; int j = i - 1; u64 val = sym->st_value + rela->r_addend; - + if (pltsec->plt_max_entries == 0) + return 0; if (is_forbidden_offset_for_adrp(&plt[i].adrp)) i++; -- 2.18.4