├── .SRCINFO ├── LICENSE.md ├── PKGBUILD ├── README.md ├── analyze-shutdown ├── diagnose.shutdown ├── shutdown-diagnose.service └── start-diagnose-shutdown /.SRCINFO: -------------------------------------------------------------------------------- 1 | pkgbase = systemd-shutdown-diagnose 2 | pkgdesc = help to diagnose shutdown sequence for systemd 3 | pkgver = 6 4 | pkgrel = 1 5 | url = http://github.com/farseerfc/systemd-shutdown-diagnose 6 | arch = any 7 | license = GPL2 8 | source = analyze-shutdown 9 | source = diagnose.shutdown 10 | source = shutdown-diagnose.service 11 | source = start-diagnose-shutdown 12 | sha512sums = feb9d7a5ab06a6d89026564041aff0524d20594befa9e4ba628340fcb34a16e6bacdb1c99425e27d5335f5019f2a1c03fc1565bd88e7115241beea49ebb800ac 13 | sha512sums = 803db23f991b1672f9c2e05d9316eb870e261e9c5f7bc56019511b946ce6086bb52083be92070bdbc08bf23130aa87ae7af0bf3d44084c33753a3602cde76a14 14 | sha512sums = 26faec19537be2d4dad83e16a3557d1ab20f71a3f66abbfb8725e7fd9233fef6df2c21c81f5c48c48963746d8b319483615a25ae1fb49f8b3667f30e6b1418ec 15 | sha512sums = 2ee770dce7cbf95d07b49e24522c6be2d7dd8f3cbe88097d6b27a9ea05052525ef58ef6c2f95bf09bcbc38db46918098faf13655c0f6853b3057dac9ec10e6bb 16 | 17 | pkgname = systemd-shutdown-diagnose 18 | 19 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. (Some other Free Software Foundation software is covered by 18 | the GNU Lesser General Public License instead.) You can apply it to 19 | your programs, too. 20 | 21 | When we speak of free software, we are referring to freedom, not 22 | price. Our General Public Licenses are designed to make sure that you 23 | have the freedom to distribute copies of free software (and charge for 24 | this service if you wish), that you receive source code or can get it 25 | if you want it, that you can change the software or use pieces of it 26 | in new free programs; and that you know you can do these things. 27 | 28 | To protect your rights, we need to make restrictions that forbid 29 | anyone to deny you these rights or to ask you to surrender the rights. 30 | These restrictions translate to certain responsibilities for you if you 31 | distribute copies of the software, or if you modify it. 32 | 33 | For example, if you distribute copies of such a program, whether 34 | gratis or for a fee, you must give the recipients all the rights that 35 | you have. You must make sure that they, too, receive or can get the 36 | source code. And you must show them these terms so they know their 37 | rights. 38 | 39 | We protect your rights with two steps: (1) copyright the software, and 40 | (2) offer you this license which gives you legal permission to copy, 41 | distribute and/or modify the software. 42 | 43 | Also, for each author's protection and ours, we want to make certain 44 | that everyone understands that there is no warranty for this free 45 | software. If the software is modified by someone else and passed on, we 46 | want its recipients to know that what they have is not the original, so 47 | that any problems introduced by others will not reflect on the original 48 | authors' reputations. 49 | 50 | Finally, any free program is threatened constantly by software 51 | patents. We wish to avoid the danger that redistributors of a free 52 | program will individually obtain patent licenses, in effect making the 53 | program proprietary. To prevent this, we have made it clear that any 54 | patent must be licensed for everyone's free use or not licensed at all. 55 | 56 | The precise terms and conditions for copying, distribution and 57 | modification follow. 58 | 59 | GNU GENERAL PUBLIC LICENSE 60 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 61 | 62 | 0. This License applies to any program or other work which contains 63 | a notice placed by the copyright holder saying it may be distributed 64 | under the terms of this General Public License. The "Program", below, 65 | refers to any such program or work, and a "work based on the Program" 66 | means either the Program or any derivative work under copyright law: 67 | that is to say, a work containing the Program or a portion of it, 68 | either verbatim or with modifications and/or translated into another 69 | language. (Hereinafter, translation is included without limitation in 70 | the term "modification".) Each licensee is addressed as "you". 71 | 72 | Activities other than copying, distribution and modification are not 73 | covered by this License; they are outside its scope. The act of 74 | running the Program is not restricted, and the output from the Program 75 | is covered only if its contents constitute a work based on the 76 | Program (independent of having been made by running the Program). 77 | Whether that is true depends on what the Program does. 78 | 79 | 1. You may copy and distribute verbatim copies of the Program's 80 | source code as you receive it, in any medium, provided that you 81 | conspicuously and appropriately publish on each copy an appropriate 82 | copyright notice and disclaimer of warranty; keep intact all the 83 | notices that refer to this License and to the absence of any warranty; 84 | and give any other recipients of the Program a copy of this License 85 | along with the Program. 86 | 87 | You may charge a fee for the physical act of transferring a copy, and 88 | you may at your option offer warranty protection in exchange for a fee. 89 | 90 | 2. You may modify your copy or copies of the Program or any portion 91 | of it, thus forming a work based on the Program, and copy and 92 | distribute such modifications or work under the terms of Section 1 93 | above, provided that you also meet all of these conditions: 94 | 95 | a) You must cause the modified files to carry prominent notices 96 | stating that you changed the files and the date of any change. 97 | 98 | b) You must cause any work that you distribute or publish, that in 99 | whole or in part contains or is derived from the Program or any 100 | part thereof, to be licensed as a whole at no charge to all third 101 | parties under the terms of this License. 102 | 103 | c) If the modified program normally reads commands interactively 104 | when run, you must cause it, when started running for such 105 | interactive use in the most ordinary way, to print or display an 106 | announcement including an appropriate copyright notice and a 107 | notice that there is no warranty (or else, saying that you provide 108 | a warranty) and that users may redistribute the program under 109 | these conditions, and telling the user how to view a copy of this 110 | License. (Exception: if the Program itself is interactive but 111 | does not normally print such an announcement, your work based on 112 | the Program is not required to print an announcement.) 113 | 114 | These requirements apply to the modified work as a whole. If 115 | identifiable sections of that work are not derived from the Program, 116 | and can be reasonably considered independent and separate works in 117 | themselves, then this License, and its terms, do not apply to those 118 | sections when you distribute them as separate works. But when you 119 | distribute the same sections as part of a whole which is a work based 120 | on the Program, the distribution of the whole must be on the terms of 121 | this License, whose permissions for other licensees extend to the 122 | entire whole, and thus to each and every part regardless of who wrote it. 123 | 124 | Thus, it is not the intent of this section to claim rights or contest 125 | your rights to work written entirely by you; rather, the intent is to 126 | exercise the right to control the distribution of derivative or 127 | collective works based on the Program. 128 | 129 | In addition, mere aggregation of another work not based on the Program 130 | with the Program (or with a work based on the Program) on a volume of 131 | a storage or distribution medium does not bring the other work under 132 | the scope of this License. 133 | 134 | 3. You may copy and distribute the Program (or a work based on it, 135 | under Section 2) in object code or executable form under the terms of 136 | Sections 1 and 2 above provided that you also do one of the following: 137 | 138 | a) Accompany it with the complete corresponding machine-readable 139 | source code, which must be distributed under the terms of Sections 140 | 1 and 2 above on a medium customarily used for software interchange; or, 141 | 142 | b) Accompany it with a written offer, valid for at least three 143 | years, to give any third party, for a charge no more than your 144 | cost of physically performing source distribution, a complete 145 | machine-readable copy of the corresponding source code, to be 146 | distributed under the terms of Sections 1 and 2 above on a medium 147 | customarily used for software interchange; or, 148 | 149 | c) Accompany it with the information you received as to the offer 150 | to distribute corresponding source code. (This alternative is 151 | allowed only for noncommercial distribution and only if you 152 | received the program in object code or executable form with such 153 | an offer, in accord with Subsection b above.) 154 | 155 | The source code for a work means the preferred form of the work for 156 | making modifications to it. For an executable work, complete source 157 | code means all the source code for all modules it contains, plus any 158 | associated interface definition files, plus the scripts used to 159 | control compilation and installation of the executable. However, as a 160 | special exception, the source code distributed need not include 161 | anything that is normally distributed (in either source or binary 162 | form) with the major components (compiler, kernel, and so on) of the 163 | operating system on which the executable runs, unless that component 164 | itself accompanies the executable. 165 | 166 | If distribution of executable or object code is made by offering 167 | access to copy from a designated place, then offering equivalent 168 | access to copy the source code from the same place counts as 169 | distribution of the source code, even though third parties are not 170 | compelled to copy the source along with the object code. 171 | 172 | 4. You may not copy, modify, sublicense, or distribute the Program 173 | except as expressly provided under this License. Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. Each time you redistribute the Program (or any work based on the 190 | Program), the recipient automatically receives a license from the 191 | original licensor to copy, distribute or modify the Program subject to 192 | these terms and conditions. You may not impose any further 193 | restrictions on the recipients' exercise of the rights granted herein. 194 | You are not responsible for enforcing compliance by third parties to 195 | this License. 196 | 197 | 7. If, as a consequence of a court judgment or allegation of patent 198 | infringement or for any other reason (not limited to patent issues), 199 | conditions are imposed on you (whether by court order, agreement or 200 | otherwise) that contradict the conditions of this License, they do not 201 | excuse you from the conditions of this License. If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. For example, if a patent 205 | license would not permit royalty-free redistribution of the Program by 206 | all those who receive copies directly or indirectly through you, then 207 | the only way you could satisfy both it and this License would be to 208 | refrain entirely from distribution of the Program. 209 | 210 | If any portion of this section is held invalid or unenforceable under 211 | any particular circumstance, the balance of the section is intended to 212 | apply and the section as a whole is intended to apply in other 213 | circumstances. 214 | 215 | It is not the purpose of this section to induce you to infringe any 216 | patents or other property right claims or to contest validity of any 217 | such claims; this section has the sole purpose of protecting the 218 | integrity of the free software distribution system, which is 219 | implemented by public license practices. Many people have made 220 | generous contributions to the wide range of software distributed 221 | through that system in reliance on consistent application of that 222 | system; it is up to the author/donor to decide if he or she is willing 223 | to distribute software through any other system and a licensee cannot 224 | impose that choice. 225 | 226 | This section is intended to make thoroughly clear what is believed to 227 | be a consequence of the rest of this License. 228 | 229 | 8. If the distribution and/or use of the Program is restricted in 230 | certain countries either by patents or by copyrighted interfaces, the 231 | original copyright holder who places the Program under this License 232 | may add an explicit geographical distribution limitation excluding 233 | those countries, so that distribution is permitted only in or among 234 | countries not thus excluded. In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | {description} 294 | Copyright (C) {year} {fullname} 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /PKGBUILD: -------------------------------------------------------------------------------- 1 | # Maintainer: Jiachen Yang 2 | pkgname=systemd-shutdown-diagnose 3 | pkgver=6 4 | pkgrel=1 5 | pkgdesc="help to diagnose shutdown sequence for systemd" 6 | arch=(any) 7 | url="http://github.com/farseerfc/systemd-shutdown-diagnose" 8 | license=('GPL2') 9 | depends=() 10 | source=('analyze-shutdown' 11 | 'diagnose.shutdown' 12 | 'shutdown-diagnose.service' 13 | 'start-diagnose-shutdown' 14 | ) 15 | sha512sums=('feb9d7a5ab06a6d89026564041aff0524d20594befa9e4ba628340fcb34a16e6bacdb1c99425e27d5335f5019f2a1c03fc1565bd88e7115241beea49ebb800ac' 16 | '803db23f991b1672f9c2e05d9316eb870e261e9c5f7bc56019511b946ce6086bb52083be92070bdbc08bf23130aa87ae7af0bf3d44084c33753a3602cde76a14' 17 | '26faec19537be2d4dad83e16a3557d1ab20f71a3f66abbfb8725e7fd9233fef6df2c21c81f5c48c48963746d8b319483615a25ae1fb49f8b3667f30e6b1418ec' 18 | '2ee770dce7cbf95d07b49e24522c6be2d7dd8f3cbe88097d6b27a9ea05052525ef58ef6c2f95bf09bcbc38db46918098faf13655c0f6853b3057dac9ec10e6bb') 19 | 20 | package() { 21 | install -Dm755 diagnose.shutdown "$pkgdir/usr/lib/systemd/system-shutdown/diagnose.shutdown" 22 | install -Dm755 start-diagnose-shutdown "$pkgdir/usr/bin/start-diagnose-shutdown" 23 | install -Dm755 analyze-shutdown "$pkgdir/usr/bin/analyze-shutdown" 24 | install -Dm644 shutdown-diagnose.service "$pkgdir/usr/lib/systemd/system/shutdown-diagnose.service" 25 | } 26 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # systemd-shutdown-diagnose 2 | Take from https://co-op.space/2016/03/10/systemd-guan-ji-chao-shi-wen-ti-ding-wei-fang-fa/ , 3 | help to diagnose why systemd cannot shutdown properly. 4 | 5 | ***This may break your system! Use with CAUTION!*** 6 | 7 | # How to use 8 | 9 | Build the package by: 10 | ``` 11 | makepkg 12 | ``` 13 | 14 | Install the package using `pacman -U`. 15 | 16 | Enable the service by: 17 | ``` 18 | systemctl enable shutdown-diagnose.service 19 | systemctl start shutdown-diagnose.service 20 | ``` 21 | 22 | Then restart your system. 23 | 24 | After restart, there will be a log file at `/var/log/shutdown.log` 25 | that records the sequence of all process shutdown in ftrace format. 26 | To make it more readable, parse the log by: 27 | ``` 28 | analyze-shutdown set_event 84 | echo syscalls:sys_enter_kill >>set_event 85 | echo syscalls:sys_enter_tkill >>set_event 86 | echo syscalls:sys_enter_tgkill >>set_event 87 | echo signal:signal_deliver >>set_event 88 | echo sched:sched_process_exit >>set_event 89 | 90 | echo global >trace_clock 91 | echo 40960 >buffer_size_kb 92 | echo nop >current_tracer 93 | echo 1 >tracing_on 94 | ``` 95 | 96 | Then we need to write out the collected ftrace log into a file right after all service are stoped. `systemd` kindly provided hooks to run just before the system goes shutdown, so we have our `/usr/lib/systemd/system-shutdown/diagnose.shutdown` script: 97 | ``` 98 | #!/bin/sh 99 | mount -o remount,rw / 100 | cat /sys/kernel/debug/tracing/trace >/var/log/shutdown.log 101 | mount -o remount,ro / 102 | ``` 103 | We remount the root filesystem as read-write, write the ftrace log into it, and remount it read-only. 104 | 105 | Lastly, we have an `analyze-shutdown` script to extract the sequence of processes from ftrace log. 106 | -------------------------------------------------------------------------------- /analyze-shutdown: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | [ "$BASH" ] || { echo "Use bash >= 4"; exit 2; } 3 | ((BASH_VERSINFO[0] >= 4)) || { echo "Use bash >= 4"; exit 2; } 4 | 5 | declare -A kill_time 6 | declare -A exit_time 7 | declare -a exit_seq 8 | declare -A pid_comm 9 | declare -A wait_time 10 | declare -A killer 11 | declare -A recv_sig 12 | 13 | # ts, pid, signo 14 | set_kill_time() 15 | { 16 | if [[ "${kill_time[$2]}" ]]; then 17 | return 18 | fi 19 | 20 | case "$3" in 21 | 0 | 1 | 2 | 3 | 6 | 9 | 15) 22 | kill_time[$2]=$1 23 | ;; 24 | esac 25 | } 26 | 27 | # ts, pid 28 | set_exit_time() 29 | { 30 | if [[ "${exit_time[$2]}" ]]; then 31 | return 32 | fi 33 | 34 | exit_time[$2]=$1 35 | exit_seq+=("$pid") 36 | } 37 | 38 | # pid, target_pid, signo 39 | add_killer() 40 | { 41 | killer[$1]+=" $3>$target_pid" 42 | } 43 | 44 | #ts, pid, signo 45 | add_signal() 46 | { 47 | recv_sig[$2]+=" $3($1)" 48 | } 49 | 50 | # https://kernel.org/doc/Documentation/trace/ftrace.txt 51 | declare -i lineno=0 52 | while read -r line; do 53 | let lineno++ 54 | if [[ $line == '' || $line == '#'* ]]; then 55 | continue 56 | fi 57 | 58 | read -r -a cols <<< "$line" 59 | comm=${cols[0]%-*} 60 | pid=${cols[0]#$comm-} 61 | ts=${cols[3]%:} 62 | ts=${ts//./} 63 | func=${cols[4]%(*} 64 | func=${func%:} 65 | 66 | if [[ -z "$shut_time" ]]; then 67 | shut_time=$ts 68 | ts=0 69 | else 70 | zeros=000000 71 | ((ts-=shut_time)) 72 | if (( 6 >= ${#ts} )); then 73 | ts=${zeros:0:7-${#ts}}$ts 74 | fi 75 | ts=${ts:0:${#ts}-6}.${ts:${#ts}-6} 76 | fi 77 | 78 | case "$func" in 79 | sched_process_exit) 80 | set_exit_time "$ts" "$pid" 81 | comm="${cols[5]#comm=}" 82 | ;; 83 | sys_kill | sys_tgkill) 84 | if [[ '->' == "${cols[5]}" ]]; then 85 | if [[ '0x0' != "${cols[6]}" ]]; then 86 | target_pid=${killer[$pid]##*>} 87 | if [[ "$target_pid" ]]; then 88 | add_killer "$pid" "$target_pid" "$signo" 89 | set_exit_time "$ts" "$target_pid" 90 | fi 91 | fi 92 | else 93 | let target_pid=0x${cols[5]%,} 94 | if [[ 'sys_kill' == "$func" ]]; then 95 | let signo=0x${cols[7]%)} 96 | else 97 | let signo=0x${cols[9]%)} 98 | fi 99 | set_kill_time "$ts" "$target_pid" "$signo" 100 | add_killer "$pid" "$target_pid" "$signo" 101 | fi 102 | ;; 103 | signal_deliver) 104 | let signo=${cols[5]#sig=} 105 | add_signal "$ts" "$pid" "$signo" 106 | ;; 107 | sys_exit) 108 | set_kill_time "$ts" "$pid" - 109 | ;; 110 | esac 111 | 112 | if [[ -z "${pid_comm[$pid]}" || '<...>' == "${pid_comm[$pid]}" ]]; then 113 | pid_comm[$pid]=$comm 114 | fi 115 | done 116 | 117 | for pid in "${exit_seq[@]}"; do 118 | printf "%15s(%4s) exited at %10ss, got signals: %s\n" "${pid_comm[$pid]}" "$pid" "${exit_time[$pid]}" "${recv_sig[$pid]}" 119 | done 120 | -------------------------------------------------------------------------------- /diagnose.shutdown: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | mount -o remount,rw / 3 | cat /sys/kernel/debug/tracing/trace >/var/log/shutdown.log 4 | mount -o remount,ro / 5 | 6 | -------------------------------------------------------------------------------- /shutdown-diagnose.service: -------------------------------------------------------------------------------- 1 | [Unit] 2 | Description= A service to execute start diagnose-shutdown at begining of shutdown 3 | 4 | [Service] 5 | Type=idle 6 | RemainAfterExit=yes 7 | ExecStart=/usr/bin/true 8 | ExecStop=/usr/bin/start-diagnose-shutdown 9 | 10 | [Install] 11 | WantedBy=default.target 12 | -------------------------------------------------------------------------------- /start-diagnose-shutdown: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -e 3 | PS4="> ${0##*/}: " 4 | set -x 5 | 6 | cd /sys/kernel/debug/tracing 7 | echo 0 >tracing_on 8 | echo >trace 9 | 10 | echo syscalls:sys_enter_exit >set_event 11 | echo syscalls:sys_enter_kill >>set_event 12 | echo syscalls:sys_enter_tkill >>set_event 13 | echo syscalls:sys_enter_tgkill >>set_event 14 | echo signal:signal_deliver >>set_event 15 | echo sched:sched_process_exit >>set_event 16 | 17 | echo global >trace_clock 18 | echo 40960 >buffer_size_kb 19 | echo nop >current_tracer 20 | echo 1 >tracing_on 21 | --------------------------------------------------------------------------------