Android bugreport 概述
bugreport 是Android 系统下的一个工具，功能类似于系统的一个黑匣子；通过执行相应的命令可以获取到bugreport 包，其中包含设备日志，堆栈跟踪和其他诊断信息，可帮助您查找和修复系统错误；bugreport信息量非常之大，几乎涵盖整个系统各个层面内容，对于分析BUG是一大利器
生成 bugreport
直接 adb bugreport 生成
adb bugreport
/data/user_de/0/com.android.shell/files/bugreports/bugreport-frost-RD2A.211001.002-2022-07-26-09-29-01.zip: 1 file pulled, 0 skipped. 27.4 MB/s (23057334 bytes in 0.802s)
Bug report copied to C:\Users\86185\bugreport-frost-RD2A.211001.002-2022-07-26-09-29-01.zip
Android bugreport 内容分析
直接生成的是一个zip 包，大概有20M大小；
bugreport-xxxxx-2022-07-26-09-29-01.zip
解压后目录如下所示：
- FS 是一个目录包含下面子目录：
data data下的关键信息如 tombstone，ANR，logd信息等
proc 各个进程procfs 的dump信息
linkerconfig TBD - lshal-debug 关键HAL进程的 lshal信息
- proto TBD
- bugreport-frost-RD2A.211001.002-2022-07-26-09-29-01.txt
系统信息的关键文件，解析见下文 - dumpstate_board.txt 执行bugreport 的dumpstate 进程信息
- main_entry.txt dump出的文件名
- dumpstate_log.txt 执行dumpstate 的log 信息
- version.txt TBD
- visible_windows.zip TBD
如果发生了ANR，crash 等事件，FS下的内容是至关重要的，ANR的trace 和 tombstone 文件都可以找到，具体可以结合bugreport txt 文件分析
bugreport-xxx-211001.002-2022-07-26-09-29-01.txt
这个文件包含了system dump 的ALL info 和 dump 时间点前后的log，包含的内容为：
系统信息：
dum时间点，系统版本，内核版本，运行时间，Bootcmd
========================================================
== dumpstate: 2022-07-26 09:29:01
========================================================
Build: frost-userdebug 11 RD2A.211001.002 C3QP_R_V0.9.15.R1-0577-20220720 test-keys
Build fingerprint: 'Redmi/frost/frost:11/RD2A.211001.002/C3QP_R_V0.9.15.R1-0577-20220720:userdebug/test-keys'
Bootloader: unknown
Radio: MPSS.HA.1.0.c2-00414-QTANG2_LWG_PACK-1,MPSS.HA.1.0.c2-00414-QTANG2_LWG_PACK-1
Network: ,
Module Metadata version: 30
Kernel: Linux version 5.4.191-jgki-debug+ (scm@SS-AIMM02) (Android (6443078 based on r383902) clang version 11.0.1 (https://android.googlesource.com/toolchain/llvm-project b397f81060ce6d701042b782172ed13bee898b79), LLD 11.0.1 (/buildbot/tmp/tmp6_m7QH b397f81060ce6d701042b782172ed13bee898b79)) #1 SMP PREEMPT Wed Jul 20 02:28:27 CST 2022
Command line: security=selinux androidboot.hardware=jlq iommu.strict=0 firmware_class.path=/etc/firmware swiotlb=2048 rcu_nocbs=0-7 kpti=off rcupdate.rcu_expedited=1 earlycon=uart8250,mmio32,0x3450F000 console=jlqttyS1,115200n8 no_console_suspend loglevel=7 page_owner=on printk.devkmsg=on buildvariant=userdebug androidboot.verifiedbootstate=orange androidboot.vbmeta.device=PARTUUID=7db6ac55-ecb5-4e02-80da-4d335b973332 androidboot.vbmeta.avb_version=1.0 androidboot.vbmeta.device_state=unlocked androidboot.secureboot=0 androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=7168 androidboot.vbmeta.digest=9d001b15f4485a96b573fa13c001ac965a9cd10f43c5734ee92815b91827a401 androidboot.veritymode=disabled androidboot.bootdevice=34458000.sdhci androidboot.boot_devices=0.soc/34458000.sdhci androidboot.serialno=d4081bbb androidboot.sysdump=1 androidboot.cpuid=0x2124a4815baaeebd2102628ed64fc07400000000000000000000000000000000 androidboot.bootreason=0 androidboot.baseband=msm androidboot.hwname=frost androidboot.hwc=Global androidboot.hwversion=1.21.0 androidboot.hwlevel=1 androidboot.product.hardware.sku=c3qpa panel_cfg=xiaomi C3QP 35 02 0a hd+ video dsi panel,display_init=1 androidboot.slot_suffix=_a rootwait ro init=\init androidboot.dtbo_idx=6,9,15 androidboot.dtb_idx=0 androidboot.force_normal_boot=1
Uptime: up 0 weeks, 6 days, 6 hours, 1 minute
Bugreport format version: 2.0
Dumpstate info: id=2 pid=20089 dry_run=0 args=/system/bin/dumpstate -S -d -z bugreport_mode=
dumpsys 信息
-
dumpsys SurfaceFlinger
关键字：
DUMP OF SERVICE CRITICAL SurfaceFlinger:
was the duration of dumpsys SurfaceFlinger -
dumpsys activity activities
关键字：
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
was the duration of dumpsys activity -
dumpsys cpuinfo
关键字：
was the duration of dumpsys cpuinfo -
dumpsys input
关键字：
was the duration of dumpsys input -
dumpsys notification
关键字：
was the duration of dumpsys notification -
dumpsys power
关键字：
was the duration of dumpsys power -
dumpsys sensorservice
关键字：
was the duration of dumpsys sensorservice -
dumpsys window lastanr
关键字：
WINDOW MANAGER LAST ANR (dumpsys window lastanr) -
dumpsys window policy
关键字：
WINDOW MANAGER POLICY STATE (dumpsys window policy) -
dumpsys window animator
关键字：
WINDOW MANAGER ANIMATOR STATE (dumpsys window animator) -
dumpsys window sessions
关键字：
WINDOW MANAGER SESSIONS (dumpsys window sessions)
-
dumpsys window displays
关键字：
WINDOW MANAGER DISPLAY CONTENTS (dumpsys window displays) -
dumpsys window tokens
关键字：
WINDOW MANAGER TOKENS (dumpsys window tokens) -
dumpsys window windows
关键字：
WINDOW MANAGER WINDOWS (dumpsys window windows) -
dumpsys window trace
关键字：
WINDOW MANAGER TRACE (dumpsys window trace) -
dumpsys window logging
关键字：
WINDOW MANAGER LOGGING (dumpsys window logging) -
dumpsys window refresh
关键字：
WINDOW MANAGER HIGH REFRESH RATE BLACKLIST (dumpsys window refresh) -
dumpsys window constants
关键字：
WINDOW MANAGER CONSTANTS (dumpsys window constants):
lgcat 信息
关键字：
system log:
------ SYSTEM LOG (logcat -v threadtime -v printable -v uid -d *:v) ------
------ was the duration of 'SYSTEM LOG' ------
event log:
------ EVENT LOG (logcat -b events -v threadtime -v printable -v uid -d *:v) ------
------ was the duration of 'EVENT LOG' ------
stat log:
------ STATS LOG (logcat -b stats -v threadtime -v printable -v uid -d *:v) ------
------ was the duration of 'STATS LOG' ------
radio log:
------ RADIO LOG (logcat -b radio -v threadtime -v printable -v uid -d *:v) ------
------ was the duration of 'RADIO LOG' ------
last log:
------ LAST LOGCAT (logcat -L -b all -v threadtime -v printable -v uid -d *:v) ------
chkbugreport 工具
因为bugreport 中包含了太多的信息，查找分类信息很困难，所以有分析bugreport txt文件的开源工具 chkbugreport；作用是分析析处理手机上生成的bugreport，并且为开发者提取尽可能多的有用数据；
具体用法可以参考下面的文章：
BugReport 分析利器 ChkBugReport
使用ChkBugReport需要安装 JDK，安装包如下：
TBD(简书附件不好上传)
bugreport 代码分析
TBD
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