| /* |
| * Copyright (C) 2012 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 "kernel_collector_test.h" |
| |
| #include <unistd.h> |
| |
| #include <base/files/file_util.h> |
| #include <base/files/scoped_temp_dir.h> |
| #include <base/strings/string_util.h> |
| #include <base/strings/stringprintf.h> |
| #include <brillo/syslog_logging.h> |
| #include <gtest/gtest.h> |
| |
| using base::FilePath; |
| using base::StringPrintf; |
| using brillo::FindLog; |
| using brillo::GetLog; |
| |
| namespace { |
| |
| int s_crashes = 0; |
| bool s_metrics = false; |
| |
| void CountCrash() { |
| ++s_crashes; |
| } |
| |
| bool IsMetrics() { |
| return s_metrics; |
| } |
| |
| } // namespace |
| |
| class KernelCollectorTest : public ::testing::Test { |
| protected: |
| void WriteStringToFile(const FilePath &file_path, |
| const char *data) { |
| ASSERT_EQ(strlen(data), base::WriteFile(file_path, data, strlen(data))); |
| } |
| |
| void SetUpSuccessfulCollect(); |
| void ComputeKernelStackSignatureCommon(); |
| |
| const FilePath &kcrash_file() const { return test_kcrash_; } |
| const FilePath &test_crash_directory() const { return test_crash_directory_; } |
| |
| KernelCollectorMock collector_; |
| |
| private: |
| void SetUp() override { |
| s_crashes = 0; |
| s_metrics = true; |
| |
| EXPECT_CALL(collector_, SetUpDBus()).WillRepeatedly(testing::Return()); |
| |
| collector_.Initialize(CountCrash, IsMetrics); |
| ASSERT_TRUE(scoped_temp_dir_.CreateUniqueTempDir()); |
| test_kcrash_ = scoped_temp_dir_.path().Append("kcrash"); |
| ASSERT_TRUE(base::CreateDirectory(test_kcrash_)); |
| collector_.OverridePreservedDumpPath(test_kcrash_); |
| |
| test_kcrash_ = test_kcrash_.Append("dmesg-ramoops-0"); |
| ASSERT_FALSE(base::PathExists(test_kcrash_)); |
| |
| test_crash_directory_ = scoped_temp_dir_.path().Append("crash_directory"); |
| ASSERT_TRUE(base::CreateDirectory(test_crash_directory_)); |
| brillo::ClearLog(); |
| } |
| |
| FilePath test_kcrash_; |
| FilePath test_crash_directory_; |
| base::ScopedTempDir scoped_temp_dir_; |
| }; |
| |
| TEST_F(KernelCollectorTest, ComputeKernelStackSignatureBase) { |
| // Make sure the normal build architecture is detected |
| EXPECT_NE(KernelCollector::kArchUnknown, collector_.arch()); |
| } |
| |
| TEST_F(KernelCollectorTest, LoadPreservedDump) { |
| ASSERT_FALSE(base::PathExists(kcrash_file())); |
| std::string dump; |
| dump.clear(); |
| |
| WriteStringToFile(kcrash_file(), |
| "CrashRecordWithoutRamoopsHeader\n<6>[ 0.078852]"); |
| ASSERT_TRUE(collector_.LoadParameters()); |
| ASSERT_TRUE(collector_.LoadPreservedDump(&dump)); |
| ASSERT_EQ("CrashRecordWithoutRamoopsHeader\n<6>[ 0.078852]", dump); |
| |
| WriteStringToFile(kcrash_file(), "====1.1\nsomething"); |
| ASSERT_TRUE(collector_.LoadParameters()); |
| ASSERT_TRUE(collector_.LoadPreservedDump(&dump)); |
| ASSERT_EQ("something", dump); |
| |
| WriteStringToFile(kcrash_file(), "\x01\x02\xfe\xff random blob"); |
| ASSERT_TRUE(collector_.LoadParameters()); |
| ASSERT_FALSE(collector_.LoadPreservedDump(&dump)); |
| ASSERT_EQ("", dump); |
| } |
| |
| TEST_F(KernelCollectorTest, EnableMissingKernel) { |
| ASSERT_FALSE(collector_.Enable()); |
| ASSERT_FALSE(collector_.is_enabled()); |
| ASSERT_TRUE(FindLog( |
| "Kernel does not support crash dumping")); |
| ASSERT_EQ(s_crashes, 0); |
| } |
| |
| TEST_F(KernelCollectorTest, EnableOK) { |
| WriteStringToFile(kcrash_file(), ""); |
| EXPECT_CALL(collector_, DumpDirMounted()).WillOnce(::testing::Return(true)); |
| ASSERT_TRUE(collector_.Enable()); |
| ASSERT_TRUE(collector_.is_enabled()); |
| ASSERT_TRUE(FindLog("Enabling kernel crash handling")); |
| ASSERT_EQ(s_crashes, 0); |
| } |
| |
| TEST_F(KernelCollectorTest, StripSensitiveDataBasic) { |
| // Basic tests of StripSensitiveData... |
| |
| // Make sure we work OK with a string w/ no MAC addresses. |
| const std::string kCrashWithNoMacsOrig = |
| "<7>[111566.131728] PM: Entering mem sleep\n"; |
| std::string crash_with_no_macs(kCrashWithNoMacsOrig); |
| collector_.StripSensitiveData(&crash_with_no_macs); |
| EXPECT_EQ(kCrashWithNoMacsOrig, crash_with_no_macs); |
| |
| // Make sure that we handle the case where there's nothing before/after the |
| // MAC address. |
| const std::string kJustAMacOrig = |
| "11:22:33:44:55:66"; |
| const std::string kJustAMacStripped = |
| "00:00:00:00:00:01"; |
| std::string just_a_mac(kJustAMacOrig); |
| collector_.StripSensitiveData(&just_a_mac); |
| EXPECT_EQ(kJustAMacStripped, just_a_mac); |
| |
| // Test MAC addresses crammed together to make sure it gets both of them. |
| // |
| // I'm not sure that the code does ideal on these two test cases (they don't |
| // look like two MAC addresses to me), but since we don't see them I think |
| // it's OK to behave as shown here. |
| const std::string kCrammedMacs1Orig = |
| "11:22:33:44:55:66:11:22:33:44:55:66"; |
| const std::string kCrammedMacs1Stripped = |
| "00:00:00:00:00:01:00:00:00:00:00:01"; |
| std::string crammed_macs_1(kCrammedMacs1Orig); |
| collector_.StripSensitiveData(&crammed_macs_1); |
| EXPECT_EQ(kCrammedMacs1Stripped, crammed_macs_1); |
| |
| const std::string kCrammedMacs2Orig = |
| "11:22:33:44:55:6611:22:33:44:55:66"; |
| const std::string kCrammedMacs2Stripped = |
| "00:00:00:00:00:0100:00:00:00:00:01"; |
| std::string crammed_macs_2(kCrammedMacs2Orig); |
| collector_.StripSensitiveData(&crammed_macs_2); |
| EXPECT_EQ(kCrammedMacs2Stripped, crammed_macs_2); |
| |
| // Test case-sensitiveness (we shouldn't be case-senstive). |
| const std::string kCapsMacOrig = |
| "AA:BB:CC:DD:EE:FF"; |
| const std::string kCapsMacStripped = |
| "00:00:00:00:00:01"; |
| std::string caps_mac(kCapsMacOrig); |
| collector_.StripSensitiveData(&caps_mac); |
| EXPECT_EQ(kCapsMacStripped, caps_mac); |
| |
| const std::string kLowerMacOrig = |
| "aa:bb:cc:dd:ee:ff"; |
| const std::string kLowerMacStripped = |
| "00:00:00:00:00:01"; |
| std::string lower_mac(kLowerMacOrig); |
| collector_.StripSensitiveData(&lower_mac); |
| EXPECT_EQ(kLowerMacStripped, lower_mac); |
| } |
| |
| TEST_F(KernelCollectorTest, StripSensitiveDataBulk) { |
| // Test calling StripSensitiveData w/ lots of MAC addresses in the "log". |
| |
| // Test that stripping code handles more than 256 unique MAC addresses, since |
| // that overflows past the last byte... |
| // We'll write up some code that generates 258 unique MAC addresses. Sorta |
| // cheating since the code is very similar to the current code in |
| // StripSensitiveData(), but would catch if someone changed that later. |
| std::string lotsa_macs_orig; |
| std::string lotsa_macs_stripped; |
| int i; |
| for (i = 0; i < 258; i++) { |
| lotsa_macs_orig += StringPrintf(" 11:11:11:11:%02X:%02x", |
| (i & 0xff00) >> 8, i & 0x00ff); |
| lotsa_macs_stripped += StringPrintf(" 00:00:00:00:%02X:%02x", |
| ((i+1) & 0xff00) >> 8, (i+1) & 0x00ff); |
| } |
| std::string lotsa_macs(lotsa_macs_orig); |
| collector_.StripSensitiveData(&lotsa_macs); |
| EXPECT_EQ(lotsa_macs_stripped, lotsa_macs); |
| } |
| |
| TEST_F(KernelCollectorTest, StripSensitiveDataSample) { |
| // Test calling StripSensitiveData w/ some actual lines from a real crash; |
| // included two MAC addresses (though replaced them with some bogusness). |
| const std::string kCrashWithMacsOrig = |
| "<6>[111567.195339] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES)" |
| " filtered out\n" |
| "<7>[108539.540144] wlan0: authenticate with 11:22:33:44:55:66 (try 1)\n" |
| "<7>[108539.554973] wlan0: associate with 11:22:33:44:55:66 (try 1)\n" |
| "<6>[110136.587583] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2," |
| " QCUSBNet Ethernet Device, 99:88:77:66:55:44\n" |
| "<7>[110964.314648] wlan0: deauthenticated from 11:22:33:44:55:66" |
| " (Reason: 6)\n" |
| "<7>[110964.325057] phy0: Removed STA 11:22:33:44:55:66\n" |
| "<7>[110964.325115] phy0: Destroyed STA 11:22:33:44:55:66\n" |
| "<6>[110969.219172] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2," |
| " QCUSBNet Ethernet Device, 99:88:77:66:55:44\n" |
| "<7>[111566.131728] PM: Entering mem sleep\n"; |
| const std::string kCrashWithMacsStripped = |
| "<6>[111567.195339] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES)" |
| " filtered out\n" |
| "<7>[108539.540144] wlan0: authenticate with 00:00:00:00:00:01 (try 1)\n" |
| "<7>[108539.554973] wlan0: associate with 00:00:00:00:00:01 (try 1)\n" |
| "<6>[110136.587583] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2," |
| " QCUSBNet Ethernet Device, 00:00:00:00:00:02\n" |
| "<7>[110964.314648] wlan0: deauthenticated from 00:00:00:00:00:01" |
| " (Reason: 6)\n" |
| "<7>[110964.325057] phy0: Removed STA 00:00:00:00:00:01\n" |
| "<7>[110964.325115] phy0: Destroyed STA 00:00:00:00:00:01\n" |
| "<6>[110969.219172] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2," |
| " QCUSBNet Ethernet Device, 00:00:00:00:00:02\n" |
| "<7>[111566.131728] PM: Entering mem sleep\n"; |
| std::string crash_with_macs(kCrashWithMacsOrig); |
| collector_.StripSensitiveData(&crash_with_macs); |
| EXPECT_EQ(kCrashWithMacsStripped, crash_with_macs); |
| } |
| |
| TEST_F(KernelCollectorTest, CollectPreservedFileMissing) { |
| ASSERT_FALSE(collector_.Collect()); |
| ASSERT_FALSE(FindLog("Stored kcrash to ")); |
| ASSERT_EQ(0, s_crashes); |
| } |
| |
| void KernelCollectorTest::SetUpSuccessfulCollect() { |
| collector_.ForceCrashDirectory(test_crash_directory()); |
| WriteStringToFile(kcrash_file(), "====1.1\nsomething"); |
| ASSERT_EQ(0, s_crashes); |
| } |
| |
| TEST_F(KernelCollectorTest, CollectOptedOut) { |
| SetUpSuccessfulCollect(); |
| s_metrics = false; |
| ASSERT_TRUE(collector_.Collect()); |
| ASSERT_TRUE(FindLog("(ignoring - no consent)")); |
| ASSERT_EQ(0, s_crashes); |
| } |
| |
| TEST_F(KernelCollectorTest, CollectOK) { |
| SetUpSuccessfulCollect(); |
| ASSERT_TRUE(collector_.Collect()); |
| ASSERT_EQ(1, s_crashes); |
| ASSERT_TRUE(FindLog("(handling)")); |
| static const char kNamePrefix[] = "Stored kcrash to "; |
| std::string log = brillo::GetLog(); |
| size_t pos = log.find(kNamePrefix); |
| ASSERT_NE(std::string::npos, pos) |
| << "Did not find string \"" << kNamePrefix << "\" in log: {\n" |
| << log << "}"; |
| pos += strlen(kNamePrefix); |
| std::string filename = log.substr(pos, std::string::npos); |
| // Take the name up until \n |
| size_t end_pos = filename.find_first_of("\n"); |
| ASSERT_NE(std::string::npos, end_pos); |
| filename = filename.substr(0, end_pos); |
| ASSERT_EQ(0, filename.find(test_crash_directory().value())); |
| ASSERT_TRUE(base::PathExists(FilePath(filename))); |
| std::string contents; |
| ASSERT_TRUE(base::ReadFileToString(FilePath(filename), &contents)); |
| ASSERT_EQ("something", contents); |
| } |
| |
| // Perform tests which are common across architectures |
| void KernelCollectorTest::ComputeKernelStackSignatureCommon() { |
| std::string signature; |
| |
| const char kStackButNoPC[] = |
| "<4>[ 6066.829029] [<790340af>] __do_softirq+0xa6/0x143\n"; |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kStackButNoPC, &signature, false)); |
| EXPECT_EQ("kernel--83615F0A", signature); |
| |
| const char kMissingEverything[] = |
| "<4>[ 6066.829029] [<790340af>] ? __do_softirq+0xa6/0x143\n"; |
| EXPECT_FALSE( |
| collector_.ComputeKernelStackSignature(kMissingEverything, |
| &signature, |
| false)); |
| |
| // Long message. |
| const char kTruncatedMessage[] = |
| "<0>[ 87.485611] Kernel panic - not syncing: 01234567890123456789" |
| "01234567890123456789X\n"; |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kTruncatedMessage, |
| &signature, |
| false)); |
| EXPECT_EQ("kernel-0123456789012345678901234567890123456789-00000000", |
| signature); |
| } |
| |
| TEST_F(KernelCollectorTest, ComputeKernelStackSignatureARM) { |
| const char kBugToPanic[] = |
| "<5>[ 123.412524] Modules linked in:\n" |
| "<5>[ 123.412534] CPU: 0 Tainted: G W " |
| "(2.6.37-01030-g51cee64 #153)\n" |
| "<5>[ 123.412552] PC is at write_breakme+0xd0/0x1b4\n" |
| "<5>[ 123.412560] LR is at write_breakme+0xc8/0x1b4\n" |
| "<5>[ 123.412569] pc : [<c0058220>] lr : [<c005821c>] " |
| "psr: 60000013\n" |
| "<5>[ 123.412574] sp : f4e0ded8 ip : c04d104c fp : 000e45e0\n" |
| "<5>[ 123.412581] r10: 400ff000 r9 : f4e0c000 r8 : 00000004\n" |
| "<5>[ 123.412589] r7 : f4e0df80 r6 : f4820c80 r5 : 00000004 " |
| "r4 : f4e0dee8\n" |
| "<5>[ 123.412598] r3 : 00000000 r2 : f4e0decc r1 : c05f88a9 " |
| "r0 : 00000039\n" |
| "<5>[ 123.412608] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA " |
| "ARM Segment user\n" |
| "<5>[ 123.412617] Control: 10c53c7d Table: 34dcc04a DAC: 00000015\n" |
| "<0>[ 123.412626] Process bash (pid: 1014, stack limit = 0xf4e0c2f8)\n" |
| "<0>[ 123.412634] Stack: (0xf4e0ded8 to 0xf4e0e000)\n" |
| "<0>[ 123.412641] dec0: " |
| " f4e0dee8 c0183678\n" |
| "<0>[ 123.412654] dee0: 00000000 00000000 00677562 0000081f c06a6a78 " |
| "400ff000 f4e0dfb0 00000000\n" |
| "<0>[ 123.412666] df00: bec7ab44 000b1719 bec7ab0c c004f498 bec7a314 " |
| "c024acc8 00000001 c018359c\n" |
| "<0>[ 123.412679] df20: f4e0df34 c04d10fc f5803c80 271beb39 000e45e0 " |
| "f5803c80 c018359c c017bfe0\n" |
| "<0>[ 123.412691] df40: 00000004 f4820c80 400ff000 f4e0df80 00000004 " |
| "f4e0c000 00000000 c01383e4\n" |
| "<0>[ 123.412703] df60: f4820c80 400ff000 f4820c80 400ff000 00000000 " |
| "00000000 00000004 c0138578\n" |
| "<0>[ 123.412715] df80: 00000000 00000000 00000004 00000000 00000004 " |
| "402f95d0 00000004 00000004\n" |
| "<0>[ 123.412727] dfa0: c0054984 c00547c0 00000004 402f95d0 00000001 " |
| "400ff000 00000004 00000000\n" |
| "<0>[ 123.412739] dfc0: 00000004 402f95d0 00000004 00000004 400ff000 " |
| "000c194c bec7ab58 000e45e0\n" |
| "<0>[ 123.412751] dfe0: 00000000 bec7aad8 40232520 40284e9c 60000010 " |
| "00000001 00000000 00000000\n" |
| "<5>[ 39.496577] Backtrace:\n" |
| "<5>[ 123.412782] [<c0058220>] (__bug+0x20/0x2c) from [<c0183678>] " |
| "(write_breakme+0xdc/0x1bc)\n" |
| "<5>[ 123.412798] [<c0183678>] (write_breakme+0xdc/0x1bc) from " |
| "[<c017bfe0>] (proc_reg_write+0x88/0x9c)\n"; |
| std::string signature; |
| |
| collector_.set_arch(KernelCollector::kArchArm); |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kBugToPanic, &signature, false)); |
| EXPECT_EQ("kernel-write_breakme-97D3E92F", signature); |
| |
| ComputeKernelStackSignatureCommon(); |
| } |
| |
| TEST_F(KernelCollectorTest, ComputeKernelStackSignatureMIPS) { |
| const char kBugToPanic[] = |
| "<5>[ 3378.472000] lkdtm: Performing direct entry BUG\n" |
| "<5>[ 3378.476000] Kernel bug detected[#1]:\n" |
| "<5>[ 3378.484000] CPU: 0 PID: 185 Comm: dash Not tainted 3.14.0 #1\n" |
| "<5>[ 3378.488000] task: 8fed5220 ti: 8ec4a000 task.ti: 8ec4a000\n" |
| "<5>[ 3378.496000] $ 0 : 00000000 804018b8 804010f0 7785b507\n" |
| "<5>[ 3378.500000] $ 4 : 8061ab64 81204478 81205b20 00000000\n" |
| "<5>[ 3378.508000] $ 8 : 80830000 20746365 72746e65 55422079\n" |
| "<5>[ 3378.512000] $12 : 8ec4be94 000000fc 00000000 00000048\n" |
| "<5>[ 3378.520000] $16 : 00000004 8ef54000 80710000 00000002\n" |
| "<5>[ 3378.528000] $20 : 7765b6d4 00000004 7fffffff 00000002\n" |
| "<5>[ 3378.532000] $24 : 00000001 803dc0dc \n" |
| "<5>[ 3378.540000] $28 : 8ec4a000 8ec4be20 7775438d 804018b8\n" |
| "<5>[ 3378.544000] Hi : 00000000\n" |
| "<5>[ 3378.548000] Lo : 49bf8080\n" |
| "<5>[ 3378.552000] epc : 804010f0 lkdtm_do_action+0x68/0x3f8\n" |
| "<5>[ 3378.560000] Not tainted\n" |
| "<5>[ 3378.564000] ra : 804018b8 direct_entry+0x110/0x154\n" |
| "<5>[ 3378.568000] Status: 3100dc03 KERNEL EXL IE \n" |
| "<5>[ 3378.572000] Cause : 10800024\n" |
| "<5>[ 3378.576000] PrId : 0001a120 (MIPS interAptiv (multi))\n" |
| "<5>[ 3378.580000] Modules linked in: uinput cfg80211 nf_conntrack_ipv6 " |
| "nf_defrag_ipv6 ip6table_filter ip6_tables pcnet32 mii fuse " |
| "ppp_async ppp_generic slhc tun\n" |
| "<5>[ 3378.600000] Process dash (pid: 185, threadinfo=8ec4a000, " |
| "task=8fed5220, tls=77632490)\n" |
| "<5>[ 3378.608000] Stack : 00000006 ffffff9c 00000000 00000000 00000000 " |
| "00000000 8083454a 00000022\n" |
| "<5> 7765baa1 00001fee 80710000 8ef54000 8ec4bf08 00000002 " |
| "7765b6d4 00000004\n" |
| "<5> 7fffffff 00000002 7775438d 805e5158 7fffffff 00000002 " |
| "00000000 7785b507\n" |
| "<5> 806a96bc 00000004 8ef54000 8ec4bf08 00000002 804018b8 " |
| "80710000 806a98bc\n" |
| "<5> 00000002 00000020 00000004 8d515600 77756450 00000004 " |
| "8ec4bf08 802377e4\n" |
| "<5> ...\n" |
| "<5>[ 3378.652000] Call Trace:\n" |
| "<5>[ 3378.656000] [<804010f0>] lkdtm_do_action+0x68/0x3f8\n" |
| "<5>[ 3378.660000] [<804018b8>] direct_entry+0x110/0x154\n" |
| "<5>[ 3378.664000] [<802377e4>] vfs_write+0xe0/0x1bc\n" |
| "<5>[ 3378.672000] [<80237f90>] SyS_write+0x78/0xf8\n" |
| "<5>[ 3378.676000] [<80111888>] handle_sys+0x128/0x14c\n" |
| "<5>[ 3378.680000] \n" |
| "<5>[ 3378.684000] \n" |
| "<5>Code: 3c04806b 0c1793aa 248494f0 <000c000d> 3c04806b 248494fc " |
| "0c04cc7f 2405017a 08100514 \n" |
| "<5>[ 3378.696000] ---[ end trace 75067432f24bbc93 ]---\n"; |
| std::string signature; |
| |
| collector_.set_arch(KernelCollector::kArchMips); |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kBugToPanic, &signature, false)); |
| EXPECT_EQ("kernel-lkdtm_do_action-5E600A6B", signature); |
| |
| ComputeKernelStackSignatureCommon(); |
| } |
| |
| TEST_F(KernelCollectorTest, ComputeKernelStackSignatureX86) { |
| const char kBugToPanic[] = |
| "<4>[ 6066.829029] [<79039d16>] ? run_timer_softirq+0x165/0x1e6\n" |
| "<4>[ 6066.829029] [<790340af>] ignore_old_stack+0xa6/0x143\n" |
| "<0>[ 6066.829029] EIP: [<b82d7c15>] ieee80211_stop_tx_ba_session+" |
| "0xa3/0xb5 [mac80211] SS:ESP 0068:7951febc\n" |
| "<0>[ 6066.829029] CR2: 00000000323038a7\n" |
| "<4>[ 6066.845422] ---[ end trace 12b058bb46c43500 ]---\n" |
| "<0>[ 6066.845747] Kernel panic - not syncing: Fatal exception " |
| "in interrupt\n" |
| "<0>[ 6066.846902] Call Trace:\n" |
| "<4>[ 6066.846902] [<7937a07b>] ? printk+0x14/0x19\n" |
| "<4>[ 6066.949779] [<79379fc1>] panic+0x3e/0xe4\n" |
| "<4>[ 6066.949971] [<7937c5c5>] oops_end+0x73/0x81\n" |
| "<4>[ 6066.950208] [<7901b260>] no_context+0x10d/0x117\n"; |
| std::string signature; |
| |
| collector_.set_arch(KernelCollector::kArchX86); |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kBugToPanic, &signature, false)); |
| EXPECT_EQ("kernel-ieee80211_stop_tx_ba_session-DE253569", signature); |
| |
| const char kPCButNoStack[] = |
| "<0>[ 6066.829029] EIP: [<b82d7c15>] ieee80211_stop_tx_ba_session+"; |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kPCButNoStack, &signature, false)); |
| EXPECT_EQ("kernel-ieee80211_stop_tx_ba_session-00000000", signature); |
| |
| const char kBreakmeBug[] = |
| "<4>[ 180.492137] [<790970c6>] ? handle_mm_fault+0x67f/0x96d\n" |
| "<4>[ 180.492137] [<790dcdfe>] ? proc_reg_write+0x5f/0x73\n" |
| "<4>[ 180.492137] [<790e2224>] ? write_breakme+0x0/0x108\n" |
| "<4>[ 180.492137] [<790dcd9f>] ? proc_reg_write+0x0/0x73\n" |
| "<4>[ 180.492137] [<790ac0aa>] vfs_write+0x85/0xe4\n" |
| "<0>[ 180.492137] Code: c6 44 05 b2 00 89 d8 e8 0c ef 09 00 85 c0 75 " |
| "0b c7 00 00 00 00 00 e9 8e 00 00 00 ba e6 75 4b 79 89 d8 e8 f1 ee 09 " |
| "00 85 c0 75 04 <0f> 0b eb fe ba 58 47 49 79 89 d8 e8 dd ee 09 00 85 " |
| "c0 75 0a 68\n" |
| "<0>[ 180.492137] EIP: [<790e22a4>] write_breakme+0x80/0x108 SS:ESP " |
| "0068:aa3e9efc\n" |
| "<4>[ 180.501800] ---[ end trace 2a6b72965e1b1523 ]---\n" |
| "<0>[ 180.502026] Kernel panic - not syncing: Fatal exception\n" |
| "<4>[ 180.502026] Call Trace:\n" |
| "<4>[ 180.502806] [<79379aba>] ? printk+0x14/0x1a\n" |
| "<4>[ 180.503033] [<79379a00>] panic+0x3e/0xe4\n" |
| "<4>[ 180.503287] [<7937c005>] oops_end+0x73/0x81\n" |
| "<4>[ 180.503520] [<790055dd>] die+0x58/0x5e\n" |
| "<4>[ 180.503538] [<7937b96c>] do_trap+0x8e/0xa7\n" |
| "<4>[ 180.503555] [<79003d70>] ? do_invalid_op+0x0/0x80\n"; |
| |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kBreakmeBug, &signature, false)); |
| EXPECT_EQ("kernel-write_breakme-122AB3CD", signature); |
| |
| const char kPCLineTooOld[] = |
| "<4>[ 174.492137] [<790970c6>] ignored_function+0x67f/0x96d\n" |
| "<4>[ 175.492137] [<790970c6>] ignored_function2+0x67f/0x96d\n" |
| "<0>[ 174.492137] EIP: [<790e22a4>] write_breakme+0x80/0x108 SS:ESP " |
| "0068:aa3e9efc\n" |
| "<4>[ 180.501800] ---[ end trace 2a6b72965e1b1523 ]---\n" |
| "<4>[ 180.502026] Call Trace:\n" |
| "<0>[ 180.502026] Kernel panic - not syncing: Fatal exception\n" |
| "<4>[ 180.502806] [<79379aba>] printk+0x14/0x1a\n"; |
| |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kPCLineTooOld, &signature, false)); |
| EXPECT_EQ("kernel-Fatal exception-ED4C84FE", signature); |
| |
| // Panic without EIP line. |
| const char kExamplePanicOnly[] = |
| "<0>[ 87.485611] Kernel panic - not syncing: Testing panic\n" |
| "<4>[ 87.485630] Pid: 2825, comm: bash Tainted: G " |
| "C 2.6.32.23+drm33.10 #1\n" |
| "<4>[ 87.485639] Call Trace:\n" |
| "<4>[ 87.485660] [<8133f71d>] ? printk+0x14/0x17\n" |
| "<4>[ 87.485674] [<8133f663>] panic+0x3e/0xe4\n" |
| "<4>[ 87.485689] [<810d062e>] write_breakme+0xaa/0x124\n"; |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kExamplePanicOnly, |
| &signature, |
| false)); |
| EXPECT_EQ("kernel-Testing panic-E0FC3552", signature); |
| |
| // Panic from hung task. |
| const char kHungTaskBreakMe[] = |
| "<3>[ 720.459157] INFO: task bash:2287 blocked blah blah\n" |
| "<5>[ 720.459282] Call Trace:\n" |
| "<5>[ 720.459307] [<810a457b>] ? __dentry_open+0x186/0x23e\n" |
| "<5>[ 720.459323] [<810b9c71>] ? mntput_no_expire+0x29/0xe2\n" |
| "<5>[ 720.459336] [<810b9d48>] ? mntput+0x1e/0x20\n" |
| "<5>[ 720.459350] [<810ad135>] ? path_put+0x1a/0x1d\n" |
| "<5>[ 720.459366] [<8137cacc>] schedule+0x4d/0x4f\n" |
| "<5>[ 720.459379] [<8137ccfb>] schedule_timeout+0x26/0xaf\n" |
| "<5>[ 720.459394] [<8102127e>] ? should_resched+0xd/0x27\n" |
| "<5>[ 720.459409] [<81174d1f>] ? _copy_from_user+0x3c/0x50\n" |
| "<5>[ 720.459423] [<8137cd9e>] " |
| "schedule_timeout_uninterruptible+0x1a/0x1c\n" |
| "<5>[ 720.459438] [<810dee63>] write_breakme+0xb3/0x178\n" |
| "<5>[ 720.459453] [<810dedb0>] ? meminfo_proc_show+0x2f2/0x2f2\n" |
| "<5>[ 720.459467] [<810d94ae>] proc_reg_write+0x6d/0x87\n" |
| "<5>[ 720.459481] [<810d9441>] ? proc_reg_poll+0x76/0x76\n" |
| "<5>[ 720.459493] [<810a5e9e>] vfs_write+0x79/0xa5\n" |
| "<5>[ 720.459505] [<810a6011>] sys_write+0x40/0x65\n" |
| "<5>[ 720.459519] [<8137e677>] sysenter_do_call+0x12/0x26\n" |
| "<0>[ 720.459530] Kernel panic - not syncing: hung_task: blocked tasks\n" |
| "<5>[ 720.459768] Pid: 31, comm: khungtaskd Tainted: " |
| "G C 3.0.8 #1\n" |
| "<5>[ 720.459998] Call Trace:\n" |
| "<5>[ 720.460140] [<81378a35>] panic+0x53/0x14a\n" |
| "<5>[ 720.460312] [<8105f875>] watchdog+0x15b/0x1a0\n" |
| "<5>[ 720.460495] [<8105f71a>] ? hung_task_panic+0x16/0x16\n" |
| "<5>[ 720.460693] [<81043af3>] kthread+0x67/0x6c\n" |
| "<5>[ 720.460862] [<81043a8c>] ? __init_kthread_worker+0x2d/0x2d\n" |
| "<5>[ 720.461106] [<8137eb9e>] kernel_thread_helper+0x6/0x10\n"; |
| |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kHungTaskBreakMe, |
| &signature, |
| false)); |
| |
| EXPECT_EQ("kernel-(HANG)-hung_task: blocked tasks-600B37EA", signature); |
| |
| // Panic with all question marks in the last stack trace. |
| const char kUncertainStackTrace[] = |
| "<0>[56279.689669] ------------[ cut here ]------------\n" |
| "<2>[56279.689677] kernel BUG at /build/x86-alex/tmp/portage/" |
| "sys-kernel/chromeos-kernel-0.0.1-r516/work/chromeos-kernel-0.0.1/" |
| "kernel/timer.c:844!\n" |
| "<0>[56279.689683] invalid opcode: 0000 [#1] SMP \n" |
| "<0>[56279.689688] last sysfs file: /sys/power/state\n" |
| "<5>[56279.689692] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat " |
| "gobi usbnet tsl2583(C) industrialio(C) snd_hda_codec_realtek " |
| "snd_hda_intel i2c_dev snd_hda_codec snd_hwdep qcserial snd_pcm usb_wwan " |
| "i2c_i801 snd_timer nm10_gpio snd_page_alloc rtc_cmos fuse " |
| "nf_conntrack_ipv6 nf_defrag_ipv6 uvcvideo videodev ip6table_filter " |
| "ath9k ip6_tables ipv6 mac80211 ath9k_common ath9k_hw ath cfg80211 " |
| "xt_mark\n" |
| "<5>[56279.689731] \n" |
| "<5>[56279.689738] Pid: 24607, comm: powerd_suspend Tainted: G " |
| "WC 2.6.38.3+ #1 SAMSUNG ELECTRONICS CO., LTD. Alex/G100 \n" |
| "<5>[56279.689748] EIP: 0060:[<8103e3ea>] EFLAGS: 00210286 CPU: 3\n" |
| "<5>[56279.689758] EIP is at add_timer+0xd/0x1b\n" |
| "<5>[56279.689762] EAX: f5e00684 EBX: f5e003c0 ECX: 00000002 EDX: " |
| "00200246\n" |
| "<5>[56279.689767] ESI: f5e003c0 EDI: d28bc03c EBP: d2be5e40 ESP: " |
| "d2be5e40\n" |
| "<5>[56279.689772] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068\n" |
| "<0>[56279.689778] Process powerd_suspend (pid: 24607, ti=d2be4000 " |
| "task=f5dc9b60 task.ti=d2be4000)\n" |
| "<0>[56279.689782] Stack:\n" |
| "<5>[56279.689785] d2be5e4c f8dccced f4ac02c0 d2be5e70 f8ddc752 " |
| "f5e003c0 f4ac0458 f4ac092c\n" |
| "<5>[56279.689797] f4ac043c f4ac02c0 f4ac0000 f4ac007c d2be5e7c " |
| "f8dd4a33 f4ac0164 d2be5e94\n" |
| "<5>[56279.689809] f87e0304 f69ff0cc f4ac0164 f87e02a4 f4ac0164 " |
| "d2be5eb0 81248968 00000000\n" |
| "<0>[56279.689821] Call Trace:\n" |
| "<5>[56279.689840] [<f8dccced>] ieee80211_sta_restart+0x25/0x8c " |
| "[mac80211]\n" |
| "<5>[56279.689854] [<f8ddc752>] ieee80211_reconfig+0x2e9/0x339 " |
| "[mac80211]\n" |
| "<5>[56279.689869] [<f8dd4a33>] ieee80211_aes_cmac+0x182d/0x184e " |
| "[mac80211]\n" |
| "<5>[56279.689883] [<f87e0304>] cfg80211_get_dev_from_info+0x29b/0x2c0 " |
| "[cfg80211]\n" |
| "<5>[56279.689895] [<f87e02a4>] ? " |
| "cfg80211_get_dev_from_info+0x23b/0x2c0 [cfg80211]\n" |
| "<5>[56279.689904] [<81248968>] legacy_resume+0x25/0x5d\n" |
| "<5>[56279.689910] [<812490ae>] device_resume+0xdd/0x110\n" |
| "<5>[56279.689917] [<812491c2>] dpm_resume_end+0xe1/0x271\n" |
| "<5>[56279.689925] [<81060481>] suspend_devices_and_enter+0x18b/0x1de\n" |
| "<5>[56279.689932] [<810605ba>] enter_state+0xe6/0x132\n" |
| "<5>[56279.689939] [<8105fd4b>] state_store+0x91/0x9d\n" |
| "<5>[56279.689945] [<8105fcba>] ? state_store+0x0/0x9d\n" |
| "<5>[56279.689953] [<81178fb1>] kobj_attr_store+0x16/0x22\n" |
| "<5>[56279.689961] [<810eea5e>] sysfs_write_file+0xc1/0xec\n" |
| "<5>[56279.689969] [<810af443>] vfs_write+0x8f/0x101\n" |
| "<5>[56279.689975] [<810ee99d>] ? sysfs_write_file+0x0/0xec\n" |
| "<5>[56279.689982] [<810af556>] sys_write+0x40/0x65\n" |
| "<5>[56279.689989] [<81002d57>] sysenter_do_call+0x12/0x26\n" |
| "<0>[56279.689993] Code: c1 d3 e2 4a 89 55 f4 f7 d2 21 f2 6a 00 31 c9 89 " |
| "d8 e8 6e fd ff ff 5a 8d 65 f8 5b 5e 5d c3 55 89 e5 3e 8d 74 26 00 83 38 " |
| "00 74 04 <0f> 0b eb fe 8b 50 08 e8 6f ff ff ff 5d c3 55 89 e5 3e 8d 74 " |
| "26 \n" |
| "<0>[56279.690009] EIP: [<8103e3ea>] add_timer+0xd/0x1b SS:ESP " |
| "0068:d2be5e40\n" |
| "<4>[56279.690113] ---[ end trace b71141bb67c6032a ]---\n" |
| "<7>[56279.694069] wlan0: deauthenticated from 00:00:00:00:00:01 " |
| "(Reason: 6)\n" |
| "<0>[56279.703465] Kernel panic - not syncing: Fatal exception\n" |
| "<5>[56279.703471] Pid: 24607, comm: powerd_suspend Tainted: G D " |
| "WC 2.6.38.3+ #1\n" |
| "<5>[56279.703475] Call Trace:\n" |
| "<5>[56279.703483] [<8136648c>] ? panic+0x55/0x152\n" |
| "<5>[56279.703491] [<810057fa>] ? oops_end+0x73/0x81\n" |
| "<5>[56279.703497] [<81005a44>] ? die+0xed/0xf5\n" |
| "<5>[56279.703503] [<810033cb>] ? do_trap+0x7a/0x80\n" |
| "<5>[56279.703509] [<8100369b>] ? do_invalid_op+0x0/0x80\n" |
| "<5>[56279.703515] [<81003711>] ? do_invalid_op+0x76/0x80\n" |
| "<5>[56279.703522] [<8103e3ea>] ? add_timer+0xd/0x1b\n" |
| "<5>[56279.703529] [<81025e23>] ? check_preempt_curr+0x2e/0x69\n" |
| "<5>[56279.703536] [<8102ef28>] ? ttwu_post_activation+0x5a/0x11b\n" |
| "<5>[56279.703543] [<8102fa8d>] ? try_to_wake_up+0x213/0x21d\n" |
| "<5>[56279.703550] [<81368b7f>] ? error_code+0x67/0x6c\n" |
| "<5>[56279.703557] [<8103e3ea>] ? add_timer+0xd/0x1b\n" |
| "<5>[56279.703577] [<f8dccced>] ? ieee80211_sta_restart+0x25/0x8c " |
| "[mac80211]\n" |
| "<5>[56279.703591] [<f8ddc752>] ? ieee80211_reconfig+0x2e9/0x339 " |
| "[mac80211]\n" |
| "<5>[56279.703605] [<f8dd4a33>] ? ieee80211_aes_cmac+0x182d/0x184e " |
| "[mac80211]\n" |
| "<5>[56279.703618] [<f87e0304>] ? " |
| "cfg80211_get_dev_from_info+0x29b/0x2c0 [cfg80211]\n" |
| "<5>[56279.703630] [<f87e02a4>] ? " |
| "cfg80211_get_dev_from_info+0x23b/0x2c0 [cfg80211]\n" |
| "<5>[56279.703637] [<81248968>] ? legacy_resume+0x25/0x5d\n" |
| "<5>[56279.703643] [<812490ae>] ? device_resume+0xdd/0x110\n" |
| "<5>[56279.703649] [<812491c2>] ? dpm_resume_end+0xe1/0x271\n" |
| "<5>[56279.703657] [<81060481>] ? " |
| "suspend_devices_and_enter+0x18b/0x1de\n" |
| "<5>[56279.703663] [<810605ba>] ? enter_state+0xe6/0x132\n" |
| "<5>[56279.703670] [<8105fd4b>] ? state_store+0x91/0x9d\n" |
| "<5>[56279.703676] [<8105fcba>] ? state_store+0x0/0x9d\n" |
| "<5>[56279.703683] [<81178fb1>] ? kobj_attr_store+0x16/0x22\n" |
| "<5>[56279.703690] [<810eea5e>] ? sysfs_write_file+0xc1/0xec\n" |
| "<5>[56279.703697] [<810af443>] ? vfs_write+0x8f/0x101\n" |
| "<5>[56279.703703] [<810ee99d>] ? sysfs_write_file+0x0/0xec\n" |
| "<5>[56279.703709] [<810af556>] ? sys_write+0x40/0x65\n" |
| "<5>[56279.703716] [<81002d57>] ? sysenter_do_call+0x12/0x26\n"; |
| |
| EXPECT_TRUE( |
| collector_.ComputeKernelStackSignature(kUncertainStackTrace, |
| &signature, |
| false)); |
| // The first trace contains only uncertain entries and its hash is 00000000, |
| // so, if we used that, the signature would be kernel-add_timer-00000000. |
| // Instead we use the second-to-last trace for the hash. |
| EXPECT_EQ("kernel-add_timer-B5178878", signature); |
| |
| ComputeKernelStackSignatureCommon(); |
| } |
