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 SurfaceFlingerdumpsys activity activities
关键字：
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
was the duration of dumpsys activitydumpsys cpuinfo
关键字：
was the duration of dumpsys cpuinfodumpsys input
关键字：
was the duration of dumpsys inputdumpsys notification
关键字：
was the duration of dumpsys notificationdumpsys power
关键字：
was the duration of dumpsys powerdumpsys sensorservice
关键字：
was the duration of dumpsys sensorservicedumpsys 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
