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gerrit.openfyde.cn / chromium.googlesource.com / chromiumos / platform2 / HEAD / . / crash-reporter / kernel_util_test.cc
blob: 5aa6f3a120eb660f8bdaf37de0077b172c58c58a [file] [log] [blame]
Kimiyuki Onakab767cb12021-01-22 15:00:22 +0900[diff] [blame]1// Copyright 2021 The Chromium OS Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "crash-reporter/kernel_util.h"
6
7#include <gtest/gtest.h>
8
9#include "crash-reporter/test_util.h"
10
11namespace {
12
13// Perform tests which are common across architectures
14void ComputeKernelStackSignatureCommon(kernel_util::ArchKind arch) {
15 const char kStackButNoPC[] =
16 "<4>[ 6066.829029] [<790340af>] __do_softirq+0xa6/0x143\n";
17 EXPECT_EQ("kernel--83615F0A",
18 kernel_util::ComputeKernelStackSignature(kStackButNoPC, arch));
19
20 const char kMissingEverything[] =
21 "<4>[ 6066.829029] [<790340af>] ? __do_softirq+0xa6/0x143\n";
22 EXPECT_EQ("kernel-UnspecifiedStackSignature",
23 kernel_util::ComputeKernelStackSignature(kMissingEverything, arch));
24
25 // Long message.
26 const char kTruncatedMessage[] =
27 "<0>[ 87.485611] Kernel panic - not syncing: 01234567890123456789"
28 "01234567890123456789X\n";
29 EXPECT_EQ("kernel-0123456789012345678901234567890123456789-00000000",
30 kernel_util::ComputeKernelStackSignature(kTruncatedMessage, arch));
31}
32
33} // namespace
34
35TEST(KernelUtilTest, GetCompilerArch) {
36 kernel_util::ArchKind arch = kernel_util::GetCompilerArch();
37 EXPECT_LT(kernel_util::kArchUnknown, arch);
38 EXPECT_GT(kernel_util::kArchCount, arch);
39}
40
41TEST(KernelUtilTest, ComputeKernelStackSignatureARM) {
42 const char kBugToPanic[] =
43 "<5>[ 123.412524] Modules linked in:\n"
44 "<5>[ 123.412534] CPU: 0 Tainted: G W "
45 "(2.6.37-01030-g51cee64 #153)\n"
46 "<5>[ 123.412552] PC is at write_breakme+0xd0/0x1b4\n"
47 "<5>[ 123.412560] LR is at write_breakme+0xc8/0x1b4\n"
48 "<5>[ 123.412569] pc : [<c0058220>] lr : [<c005821c>] "
49 "psr: 60000013\n"
50 "<5>[ 123.412574] sp : f4e0ded8 ip : c04d104c fp : 000e45e0\n"
51 "<5>[ 123.412581] r10: 400ff000 r9 : f4e0c000 r8 : 00000004\n"
52 "<5>[ 123.412589] r7 : f4e0df80 r6 : f4820c80 r5 : 00000004 "
53 "r4 : f4e0dee8\n"
54 "<5>[ 123.412598] r3 : 00000000 r2 : f4e0decc r1 : c05f88a9 "
55 "r0 : 00000039\n"
56 "<5>[ 123.412608] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA "
57 "ARM Segment user\n"
58 "<5>[ 123.412617] Control: 10c53c7d Table: 34dcc04a DAC: 00000015\n"
59 "<0>[ 123.412626] Process bash (pid: 1014, stack limit = 0xf4e0c2f8)\n"
60 "<0>[ 123.412634] Stack: (0xf4e0ded8 to 0xf4e0e000)\n"
61 "<0>[ 123.412641] dec0: "
62 " f4e0dee8 c0183678\n"
63 "<0>[ 123.412654] dee0: 00000000 00000000 00677562 0000081f c06a6a78 "
64 "400ff000 f4e0dfb0 00000000\n"
65 "<0>[ 123.412666] df00: bec7ab44 000b1719 bec7ab0c c004f498 bec7a314 "
66 "c024acc8 00000001 c018359c\n"
67 "<0>[ 123.412679] df20: f4e0df34 c04d10fc f5803c80 271beb39 000e45e0 "
68 "f5803c80 c018359c c017bfe0\n"
69 "<0>[ 123.412691] df40: 00000004 f4820c80 400ff000 f4e0df80 00000004 "
70 "f4e0c000 00000000 c01383e4\n"
71 "<0>[ 123.412703] df60: f4820c80 400ff000 f4820c80 400ff000 00000000 "
72 "00000000 00000004 c0138578\n"
73 "<0>[ 123.412715] df80: 00000000 00000000 00000004 00000000 00000004 "
74 "402f95d0 00000004 00000004\n"
75 "<0>[ 123.412727] dfa0: c0054984 c00547c0 00000004 402f95d0 00000001 "
76 "400ff000 00000004 00000000\n"
77 "<0>[ 123.412739] dfc0: 00000004 402f95d0 00000004 00000004 400ff000 "
78 "000c194c bec7ab58 000e45e0\n"
79 "<0>[ 123.412751] dfe0: 00000000 bec7aad8 40232520 40284e9c 60000010 "
80 "00000001 00000000 00000000\n"
81 "<5>[ 39.496577] Backtrace:\n"
82 "<5>[ 123.412782] [<c0058220>] (__bug+0x20/0x2c) from [<c0183678>] "
83 "(write_breakme+0xdc/0x1bc)\n"
84 "<5>[ 123.412798] [<c0183678>] (write_breakme+0xdc/0x1bc) from "
85 "[<c017bfe0>] (proc_reg_write+0x88/0x9c)\n";
86
87 EXPECT_EQ("kernel-write_breakme-97D3E92F",
88 kernel_util::ComputeKernelStackSignature(kBugToPanic,
89 kernel_util::kArchArm));
90}
91
92TEST(KernelUtilTest, ComputeKernelStackSignatureARM64) {
93 const char kBugToPanic[] =
94 "<4>[ 263.786327] Modules linked in:\n"
95 "<4>[ 263.841132] CPU: 2 PID: 1303 Comm: bash Not tainted 5.4.57 #355\n"
96 "<4>[ 263.847229] Hardware name: Google Lazor (rev1, rev3+) (DT)\n"
97 "<4>[ 263.852883] pstate: 60400009 (nZCv daif +PAN -UAO)\n"
98 "<4>[ 263.857834] pc : lkdtm_BUG+0xc/0x10\n"
99 "<4>[ 263.861436] lr : lkdtm_do_action+0x24/0x40\n"
100 "<4>[ 263.865662] sp : ffffff80b2b47c60\n"
101 "<4>[ 263.869086] x29: ffffff80b2b47c60 x28: ffffff80c29799c0\n"
102 "<4>[ 263.874558] x27: 0000000000000000 x26: 0000000000000000\n"
103 "<4>[ 263.880031] x25: 0000000044000000 x24: ffffffd05a0af040\n"
104 "<4>[ 263.885501] x23: 0000000000000010 x22: ffffffd05a3c41ce\n"
105 "<4>[ 263.890968] x21: ffffffd05a0af050 x20: ffffff80b2b47df0\n"
106 "<4>[ 263.896439] x19: ffffffd05a0af050 x18: ffffffd05ae33000\n"
107 "<4>[ 263.901916] x17: 0000000000008000 x16: 00000000000000b0\n"
108 "<4>[ 263.907387] x15: ffffffd05abe1e08 x14: 0000000000000001\n"
109 "<4>[ 263.912860] x13: 0000000000000000 x12: 0000000000000000\n"
110 "<4>[ 263.918327] x11: 0000000000000000 x10: dfffffd000000001\n"
111 "<4>[ 263.923794] x9 : a1be91ac2dd38f00 x8 : ffffffd059af1cdc\n"
112 "<4>[ 263.929270] x7 : ffffffd0595712e4 x6 : 0000000000000000\n"
113 "<4>[ 263.934736] x5 : 0000000000000080 x4 : 0000000000000001\n"
114 "<4>[ 263.940204] x3 : ffffffd059911eb8 x2 : 0000000000000001\n"
115 "<4>[ 263.945678] x1 : 0000000000000008 x0 : ffffffd05a0af050\n"
116 "<4>[ 263.951156] Call trace:\n"
117 "<4>[ 263.953694] lkdtm_BUG+0xc/0x10\n"
118 "<4>[ 263.956936] lkdtm_do_action+0x24/0x40\n"
119 "<4>[ 263.960805] direct_entry+0x16c/0x1b4\n"
120 "<4>[ 263.964590] full_proxy_write+0x6c/0xa8\n"
121 "<4>[ 263.968555] __vfs_write+0x54/0x1a0\n"
122 "<4>[ 263.972153] vfs_write+0xe4/0x1a4\n"
123 "<4>[ 263.975573] ksys_write+0x84/0xec\n"
124 "<4>[ 263.978992] __arm64_sys_write+0x20/0x2c\n"
125 "<4>[ 263.983045] el0_svc_common+0xa8/0x178\n"
126 "<4>[ 263.986910] el0_svc_compat_handler+0x2c/0x40\n"
127 "<4>[ 263.991403] el0_svc_compat+0x8/0x10\n"
128 "<0>[ 263.995097] Code: 97e80634 a9bf7bfd 910003fd d503201f (d4210000)\n"
129 "<4>[ 264.001374] ---[ end trace 46a2784a72b8824d ]---\n";
130
131 EXPECT_EQ("kernel-lkdtm_BUG-1E904F37",
132 kernel_util::ComputeKernelStackSignature(kBugToPanic,
133 kernel_util::kArchArm));
134}
135
136TEST(KernelUtilTest, ComputeKernelStackSignatureMIPS) {
137 const char kBugToPanic[] =
138 "<5>[ 3378.472000] lkdtm: Performing direct entry BUG\n"
139 "<5>[ 3378.476000] Kernel bug detected[#1]:\n"
140 "<5>[ 3378.484000] CPU: 0 PID: 185 Comm: dash Not tainted 3.14.0 #1\n"
141 "<5>[ 3378.488000] task: 8fed5220 ti: 8ec4a000 task.ti: 8ec4a000\n"
142 "<5>[ 3378.496000] $ 0 : 00000000 804018b8 804010f0 7785b507\n"
143 "<5>[ 3378.500000] $ 4 : 8061ab64 81204478 81205b20 00000000\n"
144 "<5>[ 3378.508000] $ 8 : 80830000 20746365 72746e65 55422079\n"
145 "<5>[ 3378.512000] $12 : 8ec4be94 000000fc 00000000 00000048\n"
146 "<5>[ 3378.520000] $16 : 00000004 8ef54000 80710000 00000002\n"
147 "<5>[ 3378.528000] $20 : 7765b6d4 00000004 7fffffff 00000002\n"
148 "<5>[ 3378.532000] $24 : 00000001 803dc0dc \n"
149 "<5>[ 3378.540000] $28 : 8ec4a000 8ec4be20 7775438d 804018b8\n"
150 "<5>[ 3378.544000] Hi : 00000000\n"
151 "<5>[ 3378.548000] Lo : 49bf8080\n"
152 "<5>[ 3378.552000] epc : 804010f0 lkdtm_do_action+0x68/0x3f8\n"
153 "<5>[ 3378.560000] Not tainted\n"
154 "<5>[ 3378.564000] ra : 804018b8 direct_entry+0x110/0x154\n"
155 "<5>[ 3378.568000] Status: 3100dc03 KERNEL EXL IE \n"
156 "<5>[ 3378.572000] Cause : 10800024\n"
157 "<5>[ 3378.576000] PrId : 0001a120 (MIPS interAptiv (multi))\n"
158 "<5>[ 3378.580000] Modules linked in: uinput cfg80211 nf_conntrack_ipv6 "
159 "nf_defrag_ipv6 ip6table_filter ip6_tables pcnet32 mii fuse "
160 "ppp_async ppp_generic slhc tun\n"
161 "<5>[ 3378.600000] Process dash (pid: 185, threadinfo=8ec4a000, "
162 "task=8fed5220, tls=77632490)\n"
163 "<5>[ 3378.608000] Stack : 00000006 ffffff9c 00000000 00000000 00000000 "
164 "00000000 8083454a 00000022\n"
165 "<5> 7765baa1 00001fee 80710000 8ef54000 8ec4bf08 00000002 "
166 "7765b6d4 00000004\n"
167 "<5> 7fffffff 00000002 7775438d 805e5158 7fffffff 00000002 "
168 "00000000 7785b507\n"
169 "<5> 806a96bc 00000004 8ef54000 8ec4bf08 00000002 804018b8 "
170 "80710000 806a98bc\n"
171 "<5> 00000002 00000020 00000004 8d515600 77756450 00000004 "
172 "8ec4bf08 802377e4\n"
173 "<5> ...\n"
174 "<5>[ 3378.652000] Call Trace:\n"
175 "<5>[ 3378.656000] [<804010f0>] lkdtm_do_action+0x68/0x3f8\n"
176 "<5>[ 3378.660000] [<804018b8>] direct_entry+0x110/0x154\n"
177 "<5>[ 3378.664000] [<802377e4>] vfs_write+0xe0/0x1bc\n"
178 "<5>[ 3378.672000] [<80237f90>] SyS_write+0x78/0xf8\n"
179 "<5>[ 3378.676000] [<80111888>] handle_sys+0x128/0x14c\n"
180 "<5>[ 3378.680000] \n"
181 "<5>[ 3378.684000] \n"
182 "<5>Code: 3c04806b 0c1793aa 248494f0 <000c000d> 3c04806b 248494fc "
183 "0c04cc7f 2405017a 08100514 \n"
184 "<5>[ 3378.696000] ---[ end trace 75067432f24bbc93 ]---\n";
185
186 EXPECT_EQ("kernel-lkdtm_do_action-5E600A6B",
187 kernel_util::ComputeKernelStackSignature(kBugToPanic,
188 kernel_util::kArchMips));
189}
190
191TEST(KernelUtilTest, ComputeKernelStackSignatureX86) {
192 const char kBugToPanic[] =
193 "<4>[ 6066.829029] [<79039d16>] ? run_timer_softirq+0x165/0x1e6\n"
194 "<4>[ 6066.829029] [<790340af>] ignore_old_stack+0xa6/0x143\n"
195 "<0>[ 6066.829029] EIP: [<b82d7c15>] ieee80211_stop_tx_ba_session+"
196 "0xa3/0xb5 [mac80211] SS:ESP 0068:7951febc\n"
197 "<0>[ 6066.829029] CR2: 00000000323038a7\n"
198 "<4>[ 6066.845422] ---[ end trace 12b058bb46c43500 ]---\n"
199 "<0>[ 6066.845747] Kernel panic - not syncing: Fatal exception "
200 "in interrupt\n"
201 "<0>[ 6066.846902] Call Trace:\n"
202 "<4>[ 6066.846902] [<7937a07b>] ? printk+0x14/0x19\n"
203 "<4>[ 6066.949779] [<79379fc1>] panic+0x3e/0xe4\n"
204 "<4>[ 6066.949971] [<7937c5c5>] oops_end+0x73/0x81\n"
205 "<4>[ 6066.950208] [<7901b260>] no_context+0x10d/0x117\n";
206
207 const kernel_util::ArchKind arch = kernel_util::kArchX86;
208 EXPECT_EQ("kernel-ieee80211_stop_tx_ba_session-DE253569",
209 kernel_util::ComputeKernelStackSignature(kBugToPanic, arch));
210
211 const char kPCButNoStack[] =
212 "<0>[ 6066.829029] EIP: [<b82d7c15>] ieee80211_stop_tx_ba_session+";
213 EXPECT_EQ("kernel-ieee80211_stop_tx_ba_session-00000000",
214 kernel_util::ComputeKernelStackSignature(kPCButNoStack, arch));
215
216 const char kBreakmeBug[] =
217 "<4>[ 180.492137] [<790970c6>] ? handle_mm_fault+0x67f/0x96d\n"
218 "<4>[ 180.492137] [<790dcdfe>] ? proc_reg_write+0x5f/0x73\n"
219 "<4>[ 180.492137] [<790e2224>] ? write_breakme+0x0/0x108\n"
220 "<4>[ 180.492137] [<790dcd9f>] ? proc_reg_write+0x0/0x73\n"
221 "<4>[ 180.492137] [<790ac0aa>] vfs_write+0x85/0xe4\n"
222 "<0>[ 180.492137] Code: c6 44 05 b2 00 89 d8 e8 0c ef 09 00 85 c0 75 "
223 "0b c7 00 00 00 00 00 e9 8e 00 00 00 ba e6 75 4b 79 89 d8 e8 f1 ee 09 "
224 "00 85 c0 75 04 <0f> 0b eb fe ba 58 47 49 79 89 d8 e8 dd ee 09 00 85 "
225 "c0 75 0a 68\n"
226 "<0>[ 180.492137] EIP: [<790e22a4>] write_breakme+0x80/0x108 SS:ESP "
227 "0068:aa3e9efc\n"
228 "<4>[ 180.501800] ---[ end trace 2a6b72965e1b1523 ]---\n"
229 "<0>[ 180.502026] Kernel panic - not syncing: Fatal exception\n"
230 "<4>[ 180.502026] Call Trace:\n"
231 "<4>[ 180.502806] [<79379aba>] ? printk+0x14/0x1a\n"
232 "<4>[ 180.503033] [<79379a00>] panic+0x3e/0xe4\n"
233 "<4>[ 180.503287] [<7937c005>] oops_end+0x73/0x81\n"
234 "<4>[ 180.503520] [<790055dd>] die+0x58/0x5e\n"
235 "<4>[ 180.503538] [<7937b96c>] do_trap+0x8e/0xa7\n"
236 "<4>[ 180.503555] [<79003d70>] ? do_invalid_op+0x0/0x80\n";
237 EXPECT_EQ("kernel-write_breakme-122AB3CD",
238 kernel_util::ComputeKernelStackSignature(kBreakmeBug, arch));
239
240 const char kPCLineTooOld[] =
241 "<4>[ 174.492137] [<790970c6>] ignored_function+0x67f/0x96d\n"
242 "<4>[ 175.492137] [<790970c6>] ignored_function2+0x67f/0x96d\n"
243 "<0>[ 174.492137] EIP: [<790e22a4>] write_breakme+0x80/0x108 SS:ESP "
244 "0068:aa3e9efc\n"
245 "<4>[ 180.501800] ---[ end trace 2a6b72965e1b1523 ]---\n"
246 "<4>[ 180.502026] Call Trace:\n"
247 "<0>[ 180.502026] Kernel panic - not syncing: Fatal exception\n"
248 "<4>[ 180.502806] [<79379aba>] printk+0x14/0x1a\n";
249 EXPECT_EQ("kernel-Fatal exception-ED4C84FE",
250 kernel_util::ComputeKernelStackSignature(kPCLineTooOld, arch));
251
252 // Panic without EIP line.
253 const char kExamplePanicOnly[] =
254 "<0>[ 87.485611] Kernel panic - not syncing: Testing panic\n"
255 "<4>[ 87.485630] Pid: 2825, comm: bash Tainted: G "
256 "C 2.6.32.23+drm33.10 #1\n"
257 "<4>[ 87.485639] Call Trace:\n"
258 "<4>[ 87.485660] [<8133f71d>] ? printk+0x14/0x17\n"
259 "<4>[ 87.485674] [<8133f663>] panic+0x3e/0xe4\n"
260 "<4>[ 87.485689] [<810d062e>] write_breakme+0xaa/0x124\n";
261 EXPECT_EQ("kernel-Testing panic-E0FC3552",
262 kernel_util::ComputeKernelStackSignature(kExamplePanicOnly, arch));
263
264 // Panic from hung task.
265 const char kHungTaskBreakMe[] =
266 "<3>[ 720.459157] INFO: task bash:2287 blocked blah blah\n"
267 "<5>[ 720.459282] Call Trace:\n"
268 "<5>[ 720.459307] [<810a457b>] ? __dentry_open+0x186/0x23e\n"
269 "<5>[ 720.459323] [<810b9c71>] ? mntput_no_expire+0x29/0xe2\n"
270 "<5>[ 720.459336] [<810b9d48>] ? mntput+0x1e/0x20\n"
271 "<5>[ 720.459350] [<810ad135>] ? path_put+0x1a/0x1d\n"
272 "<5>[ 720.459366] [<8137cacc>] schedule+0x4d/0x4f\n"
273 "<5>[ 720.459379] [<8137ccfb>] schedule_timeout+0x26/0xaf\n"
274 "<5>[ 720.459394] [<8102127e>] ? should_resched+0xd/0x27\n"
275 "<5>[ 720.459409] [<81174d1f>] ? _copy_from_user+0x3c/0x50\n"
276 "<5>[ 720.459423] [<8137cd9e>] "
277 "schedule_timeout_uninterruptible+0x1a/0x1c\n"
278 "<5>[ 720.459438] [<810dee63>] write_breakme+0xb3/0x178\n"
279 "<5>[ 720.459453] [<810dedb0>] ? meminfo_proc_show+0x2f2/0x2f2\n"
280 "<5>[ 720.459467] [<810d94ae>] proc_reg_write+0x6d/0x87\n"
281 "<5>[ 720.459481] [<810d9441>] ? proc_reg_poll+0x76/0x76\n"
282 "<5>[ 720.459493] [<810a5e9e>] vfs_write+0x79/0xa5\n"
283 "<5>[ 720.459505] [<810a6011>] sys_write+0x40/0x65\n"
284 "<5>[ 720.459519] [<8137e677>] sysenter_do_call+0x12/0x26\n"
285 "<0>[ 720.459530] Kernel panic - not syncing: hung_task: blocked tasks\n"
286 "<5>[ 720.459768] Pid: 31, comm: khungtaskd Tainted: "
287 "G C 3.0.8 #1\n"
288 "<5>[ 720.459998] Call Trace:\n"
289 "<5>[ 720.460140] [<81378a35>] panic+0x53/0x14a\n"
290 "<5>[ 720.460312] [<8105f875>] watchdog+0x15b/0x1a0\n"
291 "<5>[ 720.460495] [<8105f71a>] ? hung_task_panic+0x16/0x16\n"
292 "<5>[ 720.460693] [<81043af3>] kthread+0x67/0x6c\n"
293 "<5>[ 720.460862] [<81043a8c>] ? __init_kthread_worker+0x2d/0x2d\n"
294 "<5>[ 720.461106] [<8137eb9e>] kernel_thread_helper+0x6/0x10\n";
295 EXPECT_EQ("kernel-(HANG)-hung_task: blocked tasks-600B37EA",
296 kernel_util::ComputeKernelStackSignature(kHungTaskBreakMe, arch));
297
298 // Panic with all question marks in the last stack trace.
299 const char kUncertainStackTrace[] =
300 "<0>[56279.689669] ------------[ cut here ]------------\n"
301 "<2>[56279.689677] kernel BUG at /build/x86-alex/tmp/portage/"
302 "sys-kernel/chromeos-kernel-0.0.1-r516/work/chromeos-kernel-0.0.1/"
303 "kernel/timer.c:844!\n"
304 "<0>[56279.689683] invalid opcode: 0000 [#1] SMP \n"
305 "<0>[56279.689688] last sysfs file: /sys/power/state\n"
306 "<5>[56279.689692] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat "
307 "gobi usbnet tsl2583(C) industrialio(C) snd_hda_codec_realtek "
308 "snd_hda_intel i2c_dev snd_hda_codec snd_hwdep qcserial snd_pcm usb_wwan "
309 "i2c_i801 snd_timer nm10_gpio snd_page_alloc rtc_cmos fuse "
310 "nf_conntrack_ipv6 nf_defrag_ipv6 uvcvideo videodev ip6table_filter "
311 "ath9k ip6_tables ipv6 mac80211 ath9k_common ath9k_hw ath cfg80211 "
312 "xt_mark\n"
313 "<5>[56279.689731] \n"
314 "<5>[56279.689738] Pid: 24607, comm: powerd_suspend Tainted: G "
315 "WC 2.6.38.3+ #1 SAMSUNG ELECTRONICS CO., LTD. Alex/G100 \n"
316 "<5>[56279.689748] EIP: 0060:[<8103e3ea>] EFLAGS: 00210286 CPU: 3\n"
317 "<5>[56279.689758] EIP is at add_timer+0xd/0x1b\n"
318 "<5>[56279.689762] EAX: f5e00684 EBX: f5e003c0 ECX: 00000002 EDX: "
319 "00200246\n"
320 "<5>[56279.689767] ESI: f5e003c0 EDI: d28bc03c EBP: d2be5e40 ESP: "
321 "d2be5e40\n"
322 "<5>[56279.689772] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068\n"
323 "<0>[56279.689778] Process powerd_suspend (pid: 24607, ti=d2be4000 "
324 "task=f5dc9b60 task.ti=d2be4000)\n"
325 "<0>[56279.689782] Stack:\n"
326 "<5>[56279.689785] d2be5e4c f8dccced f4ac02c0 d2be5e70 f8ddc752 "
327 "f5e003c0 f4ac0458 f4ac092c\n"
328 "<5>[56279.689797] f4ac043c f4ac02c0 f4ac0000 f4ac007c d2be5e7c "
329 "f8dd4a33 f4ac0164 d2be5e94\n"
330 "<5>[56279.689809] f87e0304 f69ff0cc f4ac0164 f87e02a4 f4ac0164 "
331 "d2be5eb0 81248968 00000000\n"
332 "<0>[56279.689821] Call Trace:\n"
333 "<5>[56279.689840] [<f8dccced>] ieee80211_sta_restart+0x25/0x8c "
334 "[mac80211]\n"
335 "<5>[56279.689854] [<f8ddc752>] ieee80211_reconfig+0x2e9/0x339 "
336 "[mac80211]\n"
337 "<5>[56279.689869] [<f8dd4a33>] ieee80211_aes_cmac+0x182d/0x184e "
338 "[mac80211]\n"
339 "<5>[56279.689883] [<f87e0304>] cfg80211_get_dev_from_info+0x29b/0x2c0 "
340 "[cfg80211]\n"
341 "<5>[56279.689895] [<f87e02a4>] ? "
342 "cfg80211_get_dev_from_info+0x23b/0x2c0 [cfg80211]\n"
343 "<5>[56279.689904] [<81248968>] legacy_resume+0x25/0x5d\n"
344 "<5>[56279.689910] [<812490ae>] device_resume+0xdd/0x110\n"
345 "<5>[56279.689917] [<812491c2>] dpm_resume_end+0xe1/0x271\n"
346 "<5>[56279.689925] [<81060481>] suspend_devices_and_enter+0x18b/0x1de\n"
347 "<5>[56279.689932] [<810605ba>] enter_state+0xe6/0x132\n"
348 "<5>[56279.689939] [<8105fd4b>] state_store+0x91/0x9d\n"
349 "<5>[56279.689945] [<8105fcba>] ? state_store+0x0/0x9d\n"
350 "<5>[56279.689953] [<81178fb1>] kobj_attr_store+0x16/0x22\n"
351 "<5>[56279.689961] [<810eea5e>] sysfs_write_file+0xc1/0xec\n"
352 "<5>[56279.689969] [<810af443>] vfs_write+0x8f/0x101\n"
353 "<5>[56279.689975] [<810ee99d>] ? sysfs_write_file+0x0/0xec\n"
354 "<5>[56279.689982] [<810af556>] sys_write+0x40/0x65\n"
355 "<5>[56279.689989] [<81002d57>] sysenter_do_call+0x12/0x26\n"
356 "<0>[56279.689993] Code: c1 d3 e2 4a 89 55 f4 f7 d2 21 f2 6a 00 31 c9 89 "
357 "d8 e8 6e fd ff ff 5a 8d 65 f8 5b 5e 5d c3 55 89 e5 3e 8d 74 26 00 83 38 "
358 "00 74 04 <0f> 0b eb fe 8b 50 08 e8 6f ff ff ff 5d c3 55 89 e5 3e 8d 74 "
359 "26 \n"
360 "<0>[56279.690009] EIP: [<8103e3ea>] add_timer+0xd/0x1b SS:ESP "
361 "0068:d2be5e40\n"
362 "<4>[56279.690113] ---[ end trace b71141bb67c6032a ]---\n"
363 "<7>[56279.694069] wlan0: deauthenticated from 00:00:00:00:00:01 "
364 "(Reason: 6)\n"
365 "<0>[56279.703465] Kernel panic - not syncing: Fatal exception\n"
366 "<5>[56279.703471] Pid: 24607, comm: powerd_suspend Tainted: G D "
367 "WC 2.6.38.3+ #1\n"
368 "<5>[56279.703475] Call Trace:\n"
369 "<5>[56279.703483] [<8136648c>] ? panic+0x55/0x152\n"
370 "<5>[56279.703491] [<810057fa>] ? oops_end+0x73/0x81\n"
371 "<5>[56279.703497] [<81005a44>] ? die+0xed/0xf5\n"
372 "<5>[56279.703503] [<810033cb>] ? do_trap+0x7a/0x80\n"
373 "<5>[56279.703509] [<8100369b>] ? do_invalid_op+0x0/0x80\n"
374 "<5>[56279.703515] [<81003711>] ? do_invalid_op+0x76/0x80\n"
375 "<5>[56279.703522] [<8103e3ea>] ? add_timer+0xd/0x1b\n"
376 "<5>[56279.703529] [<81025e23>] ? check_preempt_curr+0x2e/0x69\n"
377 "<5>[56279.703536] [<8102ef28>] ? ttwu_post_activation+0x5a/0x11b\n"
378 "<5>[56279.703543] [<8102fa8d>] ? try_to_wake_up+0x213/0x21d\n"
379 "<5>[56279.703550] [<81368b7f>] ? error_code+0x67/0x6c\n"
380 "<5>[56279.703557] [<8103e3ea>] ? add_timer+0xd/0x1b\n"
381 "<5>[56279.703577] [<f8dccced>] ? ieee80211_sta_restart+0x25/0x8c "
382 "[mac80211]\n"
383 "<5>[56279.703591] [<f8ddc752>] ? ieee80211_reconfig+0x2e9/0x339 "
384 "[mac80211]\n"
385 "<5>[56279.703605] [<f8dd4a33>] ? ieee80211_aes_cmac+0x182d/0x184e "
386 "[mac80211]\n"
387 "<5>[56279.703618] [<f87e0304>] ? "
388 "cfg80211_get_dev_from_info+0x29b/0x2c0 [cfg80211]\n"
389 "<5>[56279.703630] [<f87e02a4>] ? "
390 "cfg80211_get_dev_from_info+0x23b/0x2c0 [cfg80211]\n"
391 "<5>[56279.703637] [<81248968>] ? legacy_resume+0x25/0x5d\n"
392 "<5>[56279.703643] [<812490ae>] ? device_resume+0xdd/0x110\n"
393 "<5>[56279.703649] [<812491c2>] ? dpm_resume_end+0xe1/0x271\n"
394 "<5>[56279.703657] [<81060481>] ? "
395 "suspend_devices_and_enter+0x18b/0x1de\n"
396 "<5>[56279.703663] [<810605ba>] ? enter_state+0xe6/0x132\n"
397 "<5>[56279.703670] [<8105fd4b>] ? state_store+0x91/0x9d\n"
398 "<5>[56279.703676] [<8105fcba>] ? state_store+0x0/0x9d\n"
399 "<5>[56279.703683] [<81178fb1>] ? kobj_attr_store+0x16/0x22\n"
400 "<5>[56279.703690] [<810eea5e>] ? sysfs_write_file+0xc1/0xec\n"
401 "<5>[56279.703697] [<810af443>] ? vfs_write+0x8f/0x101\n"
402 "<5>[56279.703703] [<810ee99d>] ? sysfs_write_file+0x0/0xec\n"
403 "<5>[56279.703709] [<810af556>] ? sys_write+0x40/0x65\n"
404 "<5>[56279.703716] [<81002d57>] ? sysenter_do_call+0x12/0x26\n";
405 // The first trace contains only uncertain entries and its hash is 00000000,
406 // so, if we used that, the signature would be kernel-add_timer-00000000.
407 // Instead we use the second-to-last trace for the hash.
408 EXPECT_EQ(
409 "kernel-add_timer-B5178878",
410 kernel_util::ComputeKernelStackSignature(kUncertainStackTrace, arch));
411}
412
413TEST(KernelUtilTest, ComputeKernelStackSignatureX86_64) {
414 const kernel_util::ArchKind arch = kernel_util::kArchX86_64;
415 const char kStackTraceWithRIP[] =
416 "<6>[ 1504.062071] tpm_tis tpm_tis: command 0x65 (size 18) returned code "
417 "0x0\n"
418 "<6>[ 1504.489032] tpm_tis tpm_tis: command 0x1e (size 274) returned "
419 "code 0x0\n"
420 "<1>[ 1505.850798] BUG: unable to handle kernel NULL pointer dereference "
421 "at 0000000000000008\n"
422 "<1>[ 1505.850823] IP: [<ffffffff94fb0c27>] list_del_init+0x8/0x1b\n"
423 "<5>[ 1505.850843] PGD 0\n"
424 "<5>[ 1505.850854] Oops: 0002 [#1] SMP\n"
425 "<0>[ 1505.853049] gsmi: Log Shutdown Reason 0x03\n"
426 "<5>[ 1505.853059] Modules linked in: ip6t_REJECT rfcomm i2c_dev uinput "
427 "zram(C) memconsole zsmalloc(C) snd_hda_codec_realtek snd_hda_codec_hdmi "
428 "snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc fuse "
429 "nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables "
430 "snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device "
431 "snd_timer r8169 ath9k_btcoex ath9k_common_btcoex ath9k_hw_btcoex ath "
432 "mac80211 cfg80211 ath3k btusb btrtl btbcm btintel bluetooth\n"
433 "<5>[ 1505.853231] CPU 1\n"
434 "<5>[ 1505.853240] Pid: 2663, comm: quipper Tainted: G WC 3.8.11 #1\n"
435 "<5>[ 1505.853254] RIP: 0010:[<ffffffff94fb0c27>] [<ffffffff94fb0c27>] "
436 "list_del_init+0x8/0x1b\n"
437 "<5>[ 1505.853272] RSP: 0000:ffff880171789dd8 EFLAGS: 00010293\n"
438 "<5>[ 1505.853282] RAX: ffff880171789de8 RBX: ffff8801715e6b40 RCX: "
439 "000000000000003c\n"
440 "<5>[ 1505.853294] RDX: 0000000000000000 RSI: 0000000000000004 RDI: "
441 "ffff8801715e6b40\n"
442 "<5>[ 1505.853305] RBP: ffff880171789e20 R08: ffffffff956b7ba8 R09: "
443 "0000000000000000\n"
444 "<5>[ 1505.853317] R10: 0000000000000004 R11: 000000000000000f R12: "
445 "ffff880171789de8\n"
446 "<5>[ 1505.853329] R13: ffff8801715e6c80 R14: ffff880177c040d8 R15: "
447 "ffff880171789f00\n"
448 "<5>[ 1505.853341] FS: 00007fd0e720f740(0000) GS:ffff88017cb00000(0000) "
449 "knlGS:0000000000000000\n"
450 "<5>[ 1505.853353] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n"
451 "<5>[ 1505.853364] CR2: 0000000000000008 CR3: 000000016087c000 CR4: "
452 "00000000000607e0\n"
453 "<5>[ 1505.853375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: "
454 "0000000000000000\n"
455 "<5>[ 1505.853386] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: "
456 "0000000000000400\n"
457 "<5>[ 1505.853398] Process quipper (pid: 2663, threadinfo "
458 "ffff880171788000, task ffff880174dda580)\n"
459 "<5>[ 1505.853409] Stack:\n"
460 "<5>[ 1505.853416] ffff880171789e20 ffffffff94fb13c8 ffff8801715e6b40 "
461 "ffff8801715e6c80\n"
462 "<5>[ 1505.853440] 00000000fc9daf41 ffff880171789e30 ffff880175cfac60 "
463 "ffff880171789e30\n"
464 "<5>[ 1505.853463] ffff880174dda838 ffff880171789e60 ffffffff94fb36ea "
465 "ffff880176bb3dc0\n"
466 "<5>[ 1505.853487] Call Trace:\n"
467 "<5>[ 1505.853498] [<ffffffff94fb13c8>] ? namespace_unlock+0x98/0x10e\n"
468 "<5>[ 1505.853510] [<ffffffff94fb36ea>] put_mnt_ns+0x19d/0x1c4\n"
469 "<5>[ 1505.853523] [<ffffffff94f0fb50>] free_nsproxy+0x1d/0x75\n"
470 "<5>[ 1505.853535] [<ffffffff94f0fd5c>] "
471 "switch_task_namespaces+0x47/0x4e\n"
472 "<5>[ 1505.853547] [<ffffffff94f0fd73>] exit_task_namespaces+0x10/0x12\n"
473 "<5>[ 1505.853561] [<ffffffff94ef54ea>] do_exit+0x74b/0x8f7\n"
474 "<5>[ 1505.853573] [<ffffffff94e84a98>] ? "
475 "__percpu_counter_add+0x46/0x51\n"
476 "<5>[ 1505.853587] [<ffffffff94f8a0de>] ? do_munmap+0x353/0x364\n"
477 "<5>[ 1505.853599] [<ffffffff94ef57fb>] do_group_exit+0x42/0xb0\n"
478 "<5>[ 1505.853611] [<ffffffff94ef587d>] sys_exit_group+0x14/0x14\n"
479 "<5>[ 1505.853623] [<ffffffff95353928>] system_call_fastpath+0x16/0x1b\n"
480 "<5>[ 1505.853633] Code: f1 be 00 00 40 00 48 89 e5 e8 fc fe ff ff 48 3d "
481 "00 f0 ff ff 77 0b 48 c7 80 b0 00 00 00 ea ff ff ff 5d c3 48 8b 17 48 8b "
482 "47 08 55 <48> 89 42 08 48 89 e5 48 89 10 48 89 3f 48 89 7f 08 5d c3 0f "
483 "1f\n"
484 "<1>[ 1505.853861] RIP [<ffffffff94fb0c27>] list_del_init+0x8/0x1b\n"
485 "<5>[ 1505.853877] RSP <ffff880171789dd8>\n"
486 "<5>[ 1505.853885] CR2: 0000000000000008\n"
487 "<4>[ 1505.853914] ---[ end trace 6559e9c0a9497905 ]---\n"
488 "<0>[ 1505.861341] Kernel panic - not syncing: Fatal exception\n"
489 "<0>[ 1505.861358] Kernel Offset: 0x13e00000 from 0xffffffff81000000 "
490 "(relocation range: 0xffffffff80000000-0xffffffffbfffffff)\n"
491 "<0>[ 1505.861462] gsmi: Log Shutdown Reason 0x02\n"
492 "";
493
494 EXPECT_EQ("kernel-list_del_init-590B9789",
495 kernel_util::ComputeKernelStackSignature(kStackTraceWithRIP, arch));
496
497 // Panic without function name in RIP line
498 const char kExamplePanicRIPAddressOnly[] =
499 "<0>[ 21.097918] Kernel panic - not syncing: dumptest\n"
500 "<4>[ 21.097928] CPU: 6 PID: 3006 Comm: bash Not tainted "
501 "4.19.113-08544-ge67503bc40df #1\n"
502 "<4>[ 21.097934] Hardware name: Google Akemi/Akemi, BIOS "
503 "Google_Akemi.12672.104.0 02/21/2020\n"
504 "<4>[ 21.097938] Call Trace:\n"
505 "<4>[ 21.097956] dump_stack+0x97/0xdb\n"
506 "<4>[ 21.097967] panic+0x100/0x282\n"
507 "<4>[ 21.097980] lkdtm_PANIC+0x17/0x17\n"
508 "<4>[ 21.097988] direct_entry+0x107/0x113\n"
509 "<4>[ 21.097998] full_proxy_write+0x4b/0x7d\n"
510 "<4>[ 21.098008] __vfs_write+0x45/0x190\n"
511 "<4>[ 21.098018] ? selinux_file_permission+0x7c/0x115\n"
512 "<4>[ 21.098027] vfs_write+0xe5/0x195\n"
513 "<4>[ 21.098034] ksys_write+0x75/0xce\n"
514 "<4>[ 21.098042] do_syscall_64+0x54/0xde\n"
515 "<4>[ 21.098050] entry_SYSCALL_64_after_hwframe+0x44/0xa9\n"
516 "<4>[ 21.098059] RIP: 0033:0x7c527e0982c4\n"
517 "<4>[ 21.098066] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 "
518 "00 00 00 00 66 90 48 8d 05 c1 99 2c 00 8b 00 85 c0 75 2b b8 01 00 00 00 "
519 "0f 05 <48> 3d 00 f0 ff ff 77 04 c3 0f 1f 00 48 8b 15 71 3b 2c 00 f7 d8 "
520 "64\n"
521 "<4>[ 21.098073] RSP: 002b:00007ffe335470e8 EFLAGS: 00000246 ORIG_RAX: "
522 "0000000000000001\n"
523 "<4>[ 21.098080] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: "
524 "00007c527e0982c4\n"
525 "<4>[ 21.098085] RDX: 0000000000000006 RSI: 0000576fc9514fd0 RDI: "
526 "0000000000000001\n"
527 "<4>[ 21.098090] RBP: 00007ffe33547110 R08: 00007c527e358f80 R09: "
528 "0000000000000005\n"
529 "<4>[ 21.098095] R10: 0000000000000073 R11: 0000000000000246 R12: "
530 "0000576fc9514fd0\n"
531 "<4>[ 21.098100] R13: 00007c527e35d700 R14: 0000000000000006 R15: "
532 "0000000000000006\n"
533 "<0>[ 21.098179] Kernel Offset: 0x2400000 from 0xffffffff81000000 "
534 "(relocation range: 0xffffffff80000000-0xffffffffbfffffff)\n"
535 "<0>[ 21.100417] gsmi: Log Shutdown Reason 0x02\n";
536 EXPECT_EQ("kernel-dumptest-E0489331",
537 kernel_util::ComputeKernelStackSignature(
538 kExamplePanicRIPAddressOnly, arch));
539
540 // Bug to panic new RIP line
541 const char kExampleBugToPanicNewRIP[] =
542 "<1>[ 913.688488] BUG: kernel NULL pointer dereference, address: "
543 "0000000000000160\n"
544 "<1>[ 913.688496] #PF: supervisor read access in kernel mode\n"
545 "<1>[ 913.688500] #PF: error_code(0x0000) - not-present page\n"
546 "<6>[ 913.688504] PGD 0 P4D 0 \n"
547 "<4>[ 913.688511] Oops: 0000 [#1] PREEMPT SMP NOPTI\n"
548 "<4>[ 913.688516] CPU: 3 PID: 381 Comm: kworker/3:2 Not tainted "
549 "5.4.57-07393-g3f0082cb2d20 #1\n"
550 "<4>[ 913.688519] Hardware name: LENOVO Morphius/Morphius, BIOS "
551 "Google_Morphius.13360.0.0 07/19/2020\n"
552 "<4>[ 913.688529] Workqueue: 0x0 (events)\n"
553 "<4>[ 913.688538] RIP: 0010:pick_task_fair+0x55/0x77\n"
554 "<4>[ 913.688543] Code: ff 49 89 c6 4d 85 ff 74 21 4d 85 f6 74 19 41 83 "
555 "7f 40 00 74 08 48 89 df e8 05 b9 ff ff 49 8b 47 58 49 3b 46 58 79 03 4d "
556 "89 fe <49> 8b 9e 60 01 00 00 48 85 db 75 bd 49 81 c6 40 ff ff ff eb 03 "
557 "45\n"
558 "<4>[ 913.688547] RSP: 0018:ffffa94a8043bdd8 EFLAGS: 00010046\n"
559 "<4>[ 913.688551] RAX: 0000000000000000 RBX: ffffa2fba6193e00 RCX: "
560 "0000000000024580\n"
561 "<4>[ 913.688554] RDX: 0000000000000003 RSI: 0000000000000000 RDI: "
562 "ffffa2fba6193e00\n"
563 "<4>[ 913.688558] RBP: ffffa94a8043bdf0 R08: 000000d4bc9f6f47 R09: "
564 "0000000000000002\n"
565 "<4>[ 913.688561] R10: 0000000000000000 R11: ffffffff908d8c6d R12: "
566 "0000000000000000\n"
567 "<4>[ 913.688564] R13: 0000000000000003 R14: 0000000000000000 R15: "
568 "0000000000000000\n"
569 "<4>[ 913.688568] FS: 0000000000000000(0000) GS:ffffa2fbdeec0000(0000) "
570 "knlGS:0000000000000000\n"
571 "<4>[ 913.688571] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n"
572 "<4>[ 913.688574] CR2: 00000000000000c8 CR3: 00000003c5374000 CR4: "
573 "00000000003406e0\n"
574 "<4>[ 913.688577] Call Trace:\n"
575 "<4>[ 913.688587] __schedule+0x83f/0xf92\n"
576 "<4>[ 913.688594] schedule+0x75/0x99\n"
577 "<4>[ 913.688599] worker_thread+0x2c4/0x375\n"
578 "<4>[ 913.688605] kthread+0x138/0x140\n"
579 "<4>[ 913.688610] ? pr_cont_work+0x58/0x58\n"
580 "<4>[ 913.688615] ? kthread_blkcg+0x2e/0x2e\n"
581 "<4>[ 913.688619] ret_from_fork+0x22/0x40\n"
582 "<4>[ 913.688623] Modules linked in: bridge stp llc veth tun "
583 "nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp esp6 ah6 "
584 "ip6t_ipv6header rfcomm cmac algif_hash algif_skcipher af_alg uinput ccm "
585 "kvm_amd ccp snd_acp3x_i2s snd_acp3x_pcm_dma ip6t_REJECT "
586 "snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_hda_codec "
587 "snd_hwdep snd_hda_core snd_pci_acp3x i2c_piix4 snd_soc_rt5682 "
588 "snd_soc_cros_ec_codec snd_soc_rl6231 snd_soc_acp_rt5682_mach "
589 "i2c_cros_ec_tunnel acpi_als snd_soc_max98357a xt_MASQUERADE fuse "
590 "iio_trig_sysfs cros_ec_lid_angle cros_ec_sensors cros_ec_sensors_core "
591 "cros_ec_sensors_ring industrialio_triggered_buffer kfifo_buf "
592 "industrialio cros_ec_sensorhub btusb btrtl btintel btbcm bluetooth "
593 "ecdh_generic ecc uvcvideo videobuf2_v4l2 videobuf2_common "
594 "videobuf2_vmalloc videobuf2_memops iwlmvm lzo_rle lzo_compress zram "
595 "iwl7000_mac80211 r8152 mii iwlwifi cfg80211 joydev\n"
596 "<0>[ 913.695114] gsmi: Log Shutdown Reason 0x03\n"
597 "<4>[ 913.695117] CR2: 0000000000000160\n"
598 "<4>[ 913.695121] ---[ end trace ab83d26c5b621e21 ]---\n"
599 "<4>[ 913.711109] RIP: 0010:pick_task_fair+0x55/0x77\n"
600 "<4>[ 913.711115] Code: ff 49 89 c6 4d 85 ff 74 21 4d 85 f6 74 19 41 83 "
601 "7f 40 00 74 08 48 89 df e8 05 b9 ff ff 49 8b 47 58 49 3b 46 58 79 03 4d "
602 "89 fe <49> 8b 9e 60 01 00 00 48 85 db 75 bd 49 81 c6 40 ff ff ff eb 03 "
603 "45\n"
604 "<4>[ 913.711119] RSP: 0018:ffffa94a8043bdd8 EFLAGS: 00010046\n"
605 "<4>[ 913.711124] RAX: 0000000000000000 RBX: ffffa2fba6193e00 RCX: "
606 "0000000000024580\n"
607 "<4>[ 913.711127] RDX: 0000000000000003 RSI: 0000000000000000 RDI: "
608 "ffffa2fba6193e00\n"
609 "<4>[ 913.711131] RBP: ffffa94a8043bdf0 R08: 000000d4bc9f6f47 R09: "
610 "0000000000000002\n"
611 "<4>[ 913.711134] R10: 0000000000000000 R11: ffffffff908d8c6d R12: "
612 "0000000000000000\n"
613 "<4>[ 913.711137] R13: 0000000000000003 R14: 0000000000000000 R15: "
614 "0000000000000000\n"
615 "<4>[ 913.711141] FS: 0000000000000000(0000) GS:ffffa2fbdeec0000(0000) "
616 "knlGS:0000000000000000\n"
617 "<4>[ 913.711145] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n"
618 "<4>[ 913.711148] CR2: 00000000000000c8 CR3: 00000003c5374000 CR4: "
619 "00000000003406e0\n"
620 "<0>[ 913.711152] Kernel panic - not syncing: Fatal exception\n"
621 "<0>[ 915.314269] Shutting down cpus with NMI\n"
622 "<0>[ 915.314314] Kernel Offset: 0xf800000 from 0xffffffff81000000 "
623 "(relocation range: 0xffffffff80000000-0xffffffffbfffffff)\n"
624 "<0>[ 915.314553] gsmi: Log Shutdown Reason 0x02\n";
625 EXPECT_EQ(
626 "kernel-pick_task_fair-C3E38321",
627 kernel_util::ComputeKernelStackSignature(kExampleBugToPanicNewRIP, arch));
628
629 const char kStackTraceWithNewRIP[] =
630 "<1>[ 2358.194168] BUG: kernel NULL pointer dereference, address: "
631 "0000000000000160\n"
632 "<1>[ 2358.194185] #PF: supervisor read access in kernel mode\n"
633 "<1>[ 2358.194193] #PF: error_code(0x0000) - not-present page\n"
634 "<6>[ 2358.194200] PGD 0 P4D 0\n"
635 "<4>[ 2358.194215] Oops: 0000 [#1] PREEMPT SMP NOPTI\n"
636 "<4>[ 2358.194226] CPU: 7 PID: 4983 Comm: ThreadPoolSingl Not tainted "
637 "5.4.57-07393-g3f0082cb2d20 #1\n"
638 "<4>[ 2358.194234] Hardware name: LENOVO Morphius/Morphius, BIOS "
639 "Google_Morphius.13360.0.0 07/19/2020\n"
640 "<4>[ 2358.194253] RIP: 0010:pick_task_fair+0x55/0x77\n"
641 "<4>[ 2358.194263] Code: ff 49 89 c6 4d 85 ff 74 21 4d 85 f6 74 19 41 83 "
642 "7f 40 00 74 08 48 89 df e8 05 b9 ff ff 49 8b 47 58 49 3b 46 58 79 03 4d "
643 "89 fe <49> 8b 9e 60 01 00 00 48 85 db 75 bd 49 81 c6 40 ff ff ff eb 03 "
644 "45\n"
645 "<4>[ 2358.194276] RSP: 0018:ffffb0a2c89efb78 EFLAGS: 00010046\n"
646 "<4>[ 2358.194286] RAX: 0000000000000000 RBX: ffff9bff01790800 RCX: "
647 "ffff9bff1efe4600\n"
648 "<4>[ 2358.194293] RDX: 0000000000000007 RSI: 0000000000000000 RDI: "
649 "ffff9bff01790800\n"
650 "<4>[ 2358.194302] RBP: ffffb0a2c89efb90 R08: 000002250fea3371 R09: "
651 "0000000000000004\n"
652 "<4>[ 2358.194309] R10: 0000000000000000 R11: ffffffff8a2d8c6d R12: "
653 "0000000000000000\n"
654 "<4>[ 2358.194319] R13: 0000000000000007 R14: 0000000000000000 R15: "
655 "0000000000000000\n"
656 "<4>[ 2358.194329] FS: 00007c9ea7d79700(0000) GS:ffff9bff1efc0000(0000) "
657 "knlGS:0000000000000000\n"
658 "<4>[ 2358.194338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n"
659 "<4>[ 2358.194345] CR2: 0000000000000160 CR3: 00000003277dc000 CR4: "
660 "00000000003406e0\n"
661 "<4>[ 2358.194352] Call Trace:\n"
662 "<4>[ 2358.194379] __schedule+0x83f/0xf92\n"
663 "<4>[ 2358.194391] ? __schedule+0x590/0xf92\n"
664 "<4>[ 2358.194402] schedule+0x75/0x99\n"
665 "<4>[ 2358.194414] futex_wait_queue_me+0xd4/0x132\n"
666 "<4>[ 2358.194427] futex_wait+0x115/0x245\n"
667 "<4>[ 2358.194442] do_futex+0x4d6/0x7aa\n"
668 "<4>[ 2358.194452] ? __vfs_write+0x198/0x1c5\n"
669 "<4>[ 2358.194462] ? cpuacct_charge+0x3a/0x71\n"
670 "<4>[ 2358.194471] __se_sys_futex+0x91/0x17c\n"
671 "<4>[ 2358.194481] do_syscall_64+0x54/0x7e\n"
672 "<4>[ 2358.194490] entry_SYSCALL_64_after_hwframe+0x44/0xa9\n"
673 "<4>[ 2358.194499] RIP: 0033:0x7c9ebc748a47\n"
674 "<4>[ 2358.194506] Code: 89 84 24 80 00 00 00 e8 57 32 00 00 e8 a2 36 00 "
675 "00 "
676 "44 89 ee 41 89 c0 45 31 d2 31 d2 40 80 f6 80 4c 89 e7 b8 ca 00 00 00 0f "
677 "05 "
678 "<48> 3d 00 f0 ff ff 0f 87 4d 01 00 00 44 89 c7 e8 d5 36 00 00 31 f6\n"
679 "<4>[ 2358.194512] RSP: 002b:00007c9ea7d78660 EFLAGS: 00000282 ORIG_RAX: "
680 "00000000000000ca\n"
681 "<4>[ 2358.194519] RAX: ffffffffffffffda RBX: 00007c9ea7d78980 RCX: "
682 "00007c9ebc748a47\n"
683 "<4>[ 2358.194525] RDX: 0000000000000000 RSI: 0000000000000080 RDI: "
684 "00007c9ea7d789a8\n"
685 "<4>[ 2358.194530] RBP: 00007c9ea7d78730 R08: 0000000000000000 R09: "
686 "00007c9ebb04c8d0\n"
687 "<4>[ 2358.194535] R10: 0000000000000000 R11: 0000000000000282 R12: "
688 "00007c9ea7d789a8\n"
689 "<4>[ 2358.194541] R13: 0000000000000000 R14: 00007c9ea7d786b0 R15: "
690 "0000000000000000\n"
691 "<4>[ 2358.194548] Modules linked in:\n"
692 "<0>[ 2358.201575] gsmi: Log Shutdown Reason 0x03\n"
693 "<4>[ 2358.201578] CR2: 0000000000000160 \n"
694 "";
695
696 EXPECT_EQ(
697 "kernel-pick_task_fair-54582FE9",
698 kernel_util::ComputeKernelStackSignature(kStackTraceWithNewRIP, arch));
699}
700
701TEST(KernelUtilTest, ComputeKernelStackSignatureCommonAllArches) {
702 ComputeKernelStackSignatureCommon(kernel_util::kArchArm);
703 ComputeKernelStackSignatureCommon(kernel_util::kArchMips);
704 ComputeKernelStackSignatureCommon(kernel_util::kArchX86);
705 ComputeKernelStackSignatureCommon(kernel_util::kArchX86_64);
706}
707
708TEST(KernelUtilTest, WatchdogSignature) {
709 const char kConsoleRamoopsWithLongLastLine[] =
710 "<6>[ 0.000000] microcode: microcode updated early to revision 0xde, "
711 "date = 2020-05-27\n"
712 "<6>[ 0.000000] Initializing cgroup subsys cpuset\n"
713 "<6>[ 0.000000] Initializing cgroup subsys cpu\n"
714 "<6>[ 0.000000] Initializing cgroup subsys cpuacct\n"
715 "<5>[ 0.000000] Linux version 4.4.252-19740-gcbe014496e37 "
716 "(chrome-bot@chromeos-ci-legacy-us-central2-d-x32-38-i0v9) (Chromium OS "
717 "12.0_pre408248_p20201125-r9 clang version 12.0.0 "
718 "(/var/tmp/portage/sys-devel/llvm-12.0_pre408248_p20201125-r9/work/"
719 "llvm-12.0_pre408248_p20201125/clang "
720 "f402e682d0ef5598eeffc9a21a691b03e602ff58)) #1 SMP PREEMPT Mon Jan 25 "
721 "17:58:05 PST 2021\n"
722 "";
723
724 EXPECT_EQ(
725 "kernel-(WATCHDOG)-Linux version 4.4.252-19740-gcbe014496e3-082847C6",
726 kernel_util::WatchdogSignature(kConsoleRamoopsWithLongLastLine));
727
728 const char kConsoleRamoopsWithShortLastLine[] =
729 "<6>[ 0.000000] microcode: microcode updated early to revision 0xde, "
730 "date = 2020-05-27\n"
731 "<6>[ 0.000000] Initializing cgroup subsys cpuset\n"
732 "<6>[ 0.000000] Initializing cgroup subsys cpu\n"
733 "<6>[ 0.000000] Initializing cgroup subsys cpuacct\n"
734 "<5>[ 0.000000] last line\n"
735 "";
736
737 EXPECT_EQ("kernel-(WATCHDOG)-last line-3D7C5AEC",
738 kernel_util::WatchdogSignature(kConsoleRamoopsWithShortLastLine));
739
740 const char kBrokenConsoleRamoops[] = "broken";
741 EXPECT_EQ("kernel-(WATCHDOG)-broken-28348215",
742 kernel_util::WatchdogSignature(kBrokenConsoleRamoops));
743}