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x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934591AbeCSRHL (ORCPT ); Mon, 19 Mar 2018 13:07:11 -0400 Received: from mail-sn1nam02on0118.outbound.protection.outlook.com ([104.47.36.118]:57012 "EHLO NAM02-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966666AbeCSQKu (ORCPT ); Mon, 19 Mar 2018 12:10:50 -0400 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Namhyung Kim , David Ahern , Peter Zijlstra , Wang Nan , "kernel-team@lge.com" , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 140/167] perf tests: Decompress kernel module before objdump Thread-Topic: [PATCH AUTOSEL for 4.4 140/167] perf tests: Decompress kernel module before objdump Thread-Index: AQHTv5x+0ElvJ8Bke02EnUy4VtJaiA== Date: Mon, 19 Mar 2018 16:08:18 +0000 Message-ID: <20180319160513.16384-140-alexander.levin@microsoft.com> References: <20180319160513.16384-1-alexander.levin@microsoft.com> In-Reply-To: <20180319160513.16384-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1095;7:9CrU/Rcern0qlAiY8+YFmBAHWEu3SluG2czMVEolYIVKOqJN6hf/nnVQVc7MURod8OJqLEKCF0pBPOVwppI1H1qi7y/FeTUF27geXNH9t/ZkMQDAwgRBaUHuySqPiIfP4ZVLxC2v0W5v4p7h3lm8WuMqV3Hl+flFTXO88yHEhtX20yfsIrk12c3ekBDYWdFaMk0mdREqwRc5ygncjh6kJyVn8TOfMNwz3C+0VH3ZJVz8dYH7SToXHw0ZpbIk7UL5;20:Pe/BFyjPuxW3Xpjn5K+EmBEspE4CDlvnLqc45kcET7w+sYCzOMHFdVvdcVxxu97p5jewmZMXwjMKpuLIq0uqDR9OTSzuUqxxF/UnlnVwb3hg1CuHhGdMAQcbhZHTxnjWNl+20HDLCi5qRrz5svM8efWOvipwzG4TW2drjrO9D7I= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 5da18f2c-aa69-4b31-42dc-08d58db3f89f x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1095; 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x-microsoft-antispam-message-info: QWRNxILbJIeaXtcI0ZW+0yKWcrOQf9J9K3SBP6MH0AhklRAJwV0XJAkosdyJM2SqnkbMY6b/kVIjb5ZiPlW2BZ5xdVr/YOc1QZtTjNwyf4lq73gcGU+O218X8bW0DSy6KmvRzTSwxhILJ3kf3DhaV/nW8Eo4egJkRsu7BRftiL9PgMLcTpQ5ZTlUZSgU4tPtlS8X1u2iLf1g4OZ8RyqhoCxuVrNcjkIGK9XNwoULfjm6ZAjE5H+HLcsniXcFCtU24RhTJyFH58Ee+dM2pnG7fevRPDUBBrkSUIUKhLJkIqKgorWTiAVXazDSs7efNC7A0Gb1WOoK0ZscE1yeIB0Sdw== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5da18f2c-aa69-4b31-42dc-08d58db3f89f X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 16:08:18.7744 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1095 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Namhyung Kim [ Upstream commit 94df1040b1e6aacd8dec0ba3c61d7e77cd695f26 ] If a kernel modules is compressed, it should be decompressed before running objdump to parse binary data correctly. This fixes a failure of object code reading test for me. Signed-off-by: Namhyung Kim Acked-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Peter Zijlstra Cc: Wang Nan Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170608073109.30699-8-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/tests/code-reading.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-readin= g.c index a767a6400c5c..6ea4fcfaab36 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -182,6 +182,8 @@ static int read_object_code(u64 addr, size_t len, u8 cp= umode, unsigned char buf2[BUFSZ]; size_t ret_len; u64 objdump_addr; + const char *objdump_name; + char decomp_name[KMOD_DECOMP_LEN]; int ret; =20 pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr); @@ -242,9 +244,25 @@ static int read_object_code(u64 addr, size_t len, u8 c= pumode, state->done[state->done_cnt++] =3D al.map->start; } =20 + objdump_name =3D al.map->dso->long_name; + if (dso__needs_decompress(al.map->dso)) { + if (dso__decompress_kmodule_path(al.map->dso, objdump_name, + decomp_name, + sizeof(decomp_name)) < 0) { + pr_debug("decompression failed\n"); + return -1; + } + + objdump_name =3D decomp_name; + } + /* Read the object code using objdump */ objdump_addr =3D map__rip_2objdump(al.map, al.addr); - ret =3D read_via_objdump(al.map->dso->long_name, objdump_addr, buf2, len)= ; + ret =3D read_via_objdump(objdump_name, objdump_addr, buf2, len); + + if (dso__needs_decompress(al.map->dso)) + unlink(objdump_name); + if (ret > 0) { /* * The kernel maps are inaccurate - assume objdump is right in --=20 2.14.1