| /* |
| * Copyright 2022, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <string> |
| #include <vector> |
| |
| #include <gtest/gtest.h> |
| |
| #include "dmesg_parser.h" |
| |
| class DmesgParserTest : public ::testing::Test { |
| public: |
| void ReadLines(const std::vector<std::string>& lines); |
| bool CheckReport(const std::vector<std::string>& lines); |
| |
| dmesg_parser::DmesgParser parser; |
| std::string parsed_report; |
| }; |
| |
| void DmesgParserTest::ReadLines(const std::vector<std::string>& lines) { |
| for (auto line : lines) parser.ProcessLine(line); |
| } |
| |
| bool DmesgParserTest::CheckReport(const std::vector<std::string>& lines) { |
| if (!parser.ReportReady()) return false; |
| parsed_report = parser.FlushReport(); |
| |
| std::string report; |
| for (auto line : lines) { |
| report += line; |
| } |
| EXPECT_EQ(report, parsed_report); |
| return report == parsed_report; |
| } |
| |
| TEST_F(DmesgParserTest, SimpleKasanReport) { |
| std::vector<std::string> in = { |
| "[ 495.412333] [ T1] init: this line will be dropped\n", |
| "[ 495.412345] [ T9971] " |
| "==================================================================\n", |
| "[ 495.496694] [ T9971] BUG: KASAN: invalid-access in crash_write+0x134/0x140\n", |
| "[ 495.712345] [ T9971] " |
| "==================================================================\n", |
| "[ 495.767899] [ T9971] logs after the separator do not belong to report\n", |
| }; |
| |
| std::vector<std::string> report = { |
| "[ 495.496694] [ T9971] BUG: KASAN: invalid-access in crash_write+0x134/0x140\n", |
| }; |
| |
| ReadLines(in); |
| ASSERT_TRUE(parser.ReportReady()); |
| ASSERT_EQ("KASAN", parser.ReportType()); |
| ASSERT_EQ("BUG: KASAN: invalid-access in crash_write+0x134/0x140", parser.ReportTitle()); |
| ASSERT_TRUE(CheckReport(report)); |
| } |
| |
| TEST_F(DmesgParserTest, StrippedKasanReport) { |
| /* |
| * From the following report, only the lines from T9971 between the "=======" |
| * delimiters will be preserved, and only those that do not contain raw |
| * memory. |
| * Task name is also stripped off, because it may contain sensitive data. |
| */ |
| std::vector<std::string> in = { |
| "[ 495.412333] [ T1] init: this line will be dropped\n", |
| "[ 495.412345] [ T9971] " |
| "==================================================================\n", |
| "[ 495.496694] [ T9971] BUG: KASAN: invalid-access in crash_write+0x134/0x140\n", |
| "[ 495.501234] [ T333] random_process: interleaving output with our error report\n", |
| "[ 495.503671] [ T9971] Read at addr f0ffff87c23fdf7f by task sh/9971\n", |
| "[ 495.510025] [ T9971] Pointer tag: [f0], memory tag: [fe]\n", |
| "[ 495.515400] [ T9971] \n", |
| "[ 495.667603] [ T9971] raw: 4000000000010200 0000000000000000 0000000000000000 " |
| "0000000100200020\n", |
| "[ 495.667634] [ T9971] raw: dead000000000100 dead000000000200 ffffffc14900fc00 " |
| "0000000000000000\n", |
| "[ 495.712345] [ T9971] " |
| "==================================================================\n", |
| "[ 495.767899] [ T9971] logs after the separator do not belong to report\n", |
| }; |
| |
| std::vector<std::string> report = { |
| "[ 495.496694] [ T9971] BUG: KASAN: invalid-access in crash_write+0x134/0x140\n", |
| "[ 495.503671] [ T9971] Read at addr XXXXXXXXXXXXXXXX by task DELETED\n", |
| "[ 495.510025] [ T9971] Pointer tag: [f0], memory tag: [fe]\n", |
| "[ 495.515400] [ T9971] \n", |
| }; |
| |
| ReadLines(in); |
| ASSERT_TRUE(parser.ReportReady()); |
| ASSERT_EQ("KASAN", parser.ReportType()); |
| ASSERT_EQ("BUG: KASAN: invalid-access in crash_write+0x134/0x140", parser.ReportTitle()); |
| ASSERT_TRUE(CheckReport(report)); |
| } |
| |
| TEST_F(DmesgParserTest, SimpleKfenceReport) { |
| std::vector<std::string> in = { |
| "[ 495.412333] [ T1] init: this line will be dropped\n", |
| "[ 495.412345] [ T9971] " |
| "==================================================================\n", |
| "[ 495.496694] [ T9971] BUG: KFENCE: memory corruption in " |
| "test_corruption+0x98/0x19c\n", |
| "[ 495.712345] [ T9971] " |
| "==================================================================\n", |
| "[ 495.767899] [ T9971] logs after the separator do not belong to report\n", |
| }; |
| |
| std::vector<std::string> report = { |
| "[ 495.496694] [ T9971] BUG: KFENCE: memory corruption in " |
| "test_corruption+0x98/0x19c\n", |
| }; |
| |
| ReadLines(in); |
| ASSERT_TRUE(parser.ReportReady()); |
| ASSERT_EQ("KFENCE", parser.ReportType()); |
| ASSERT_EQ("BUG: KFENCE: memory corruption in test_corruption+0x98/0x19c", parser.ReportTitle()); |
| ASSERT_TRUE(CheckReport(report)); |
| } |
| |
| TEST_F(DmesgParserTest, StrippedKfenceReport) { |
| std::vector<std::string> in = { |
| "[ 200.412333] [ T1] init: this line will be dropped\n", |
| "[ 213.648234] [ T8752] " |
| "==================================================================\n", |
| "[ 213.648253] [ T8752] BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174\n", |
| "[ 213.648262] [ T8752] Out-of-bounds write at 0xffffff8938a05000 (4096B left of " |
| "kfence-#2):\n", |
| "[ 213.648270] [ T8752] crash_write+0x14c/0x174\n", |
| "[ 213.648367] [ T8752] kfence-#2 [0xffffff8938a06000-0xffffff8938a0603f, size=64, " |
| "cache=kmalloc-128] allocated by task 1:\n", |
| "[ 213.648471] [ T8752] CPU: 1 PID: 8752 Comm: sh Tainted: G C O\n", |
| "[ 213.648478] [ T8752] Hardware name: Phone 1\n", |
| "[ 213.648498] [ T8752] " |
| "==================================================================\n", |
| "[ 495.767899] [ T8752] logs after the separator do not belong to report\n", |
| }; |
| |
| std::vector<std::string> report = { |
| "[ 213.648253] [ T8752] BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174\n", |
| "[ 213.648262] [ T8752] Out-of-bounds write at XXXXXXXXXXXXXXXX (4096B left of " |
| "kfence-#2):\n", |
| "[ 213.648270] [ T8752] crash_write+0x14c/0x174\n", |
| "[ 213.648367] [ T8752] kfence-#2 [XXXXXXXXXXXXXXXX-XXXXXXXXXXXXXXXX, size=64, " |
| "cache=kmalloc-128] allocated by task DELETED\n", |
| }; |
| |
| ReadLines(in); |
| ASSERT_TRUE(parser.ReportReady()); |
| ASSERT_EQ("KFENCE", parser.ReportType()); |
| ASSERT_EQ("BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174", parser.ReportTitle()); |
| ASSERT_TRUE(CheckReport(report)); |
| } |
| |
| TEST_F(DmesgParserTest, PartialReport) { |
| std::vector<std::string> in = { |
| "[ 213.648234] [ T8752] " |
| "==================================================================\n", |
| "[ 213.648253] [ T8752] BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174\n", |
| "[ 213.648262] [ T8752] Out-of-bounds write at 0xffffff8938a05000 (4096B left of " |
| "kfence-#2):\n", |
| "[ 213.648270] [ T8752] crash_write+0x14c/0x174\n", |
| }; |
| |
| ReadLines(in); |
| ASSERT_FALSE(parser.ReportReady()); |
| } |
| |
| TEST_F(DmesgParserTest, TwoReports) { |
| std::vector<std::string> in = { |
| "[ 200.412333] [ T1] init: this line will be dropped\n", |
| "[ 213.648234] [ T8752] " |
| "==================================================================\n", |
| "[ 213.648253] [ T8752] BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174\n", |
| "[ 213.648262] [ T8752] Out-of-bounds write at 0xffffff8938a05000 (4096B left of " |
| "kfence-#2):\n", |
| "[ 214.648234] [ T9971] " |
| "==================================================================\n", |
| "[ 215.496694] [ T9971] BUG: KFENCE: memory corruption in " |
| "test_corruption+0x98/0x19c\n", |
| "[ 216.648270] [ T8752] crash_write+0x14c/0x174\n", |
| "[ 217.648234] [ T8752] " |
| "==================================================================\n", |
| }; |
| |
| std::vector<std::string> report = { |
| "[ 213.648253] [ T8752] BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174\n", |
| "[ 213.648262] [ T8752] Out-of-bounds write at XXXXXXXXXXXXXXXX (4096B left of " |
| "kfence-#2):\n", |
| "[ 216.648270] [ T8752] crash_write+0x14c/0x174\n", |
| }; |
| |
| ReadLines(in); |
| ASSERT_TRUE(parser.ReportReady()); |
| ASSERT_EQ("KFENCE", parser.ReportType()); |
| ASSERT_EQ("BUG: KFENCE: out-of-bounds write in crash_write+0x14c/0x174", parser.ReportTitle()); |
| ASSERT_TRUE(CheckReport(report)); |
| } |
