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Siarhei
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PostPosted: Sat Jun 29, 2024 6:43 pm    Post subject: [SOLVED] My system is destroyed. /bin/sh: undefinedsymbol... Reply with quote

Hello! After today's system update I can't boot into it. Complete system failure. Got a message while loading the kernel: "/bin/sh: sysmbol lookup error: /bin/sh: undefined symbol: rl_trim_arg_fromkeyse
INIT: Entering runlevel:3". Keyboard and mouse not working. I tried to do as in the article "Fix my Gentoo". Nothing succeeded". On Reddit I found the post about bash and readline. Due to a "readline" build error, the system broke down. Help me please. :x


Last edited by Siarhei on Wed Jul 03, 2024 10:34 am; edited 2 times in total
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Hu
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PostPosted: Sat Jun 29, 2024 6:56 pm    Post subject: Reply with quote

As a guess:
  • Your readline is installed in /usr/lib
  • Your /usr is not part of /, and is not mounted by an initramfs, but instead by /etc/fstab.
Is that correct? If so, then the fix is to mount /usr before you run /sbin/init. As an ugly workaround, you could copy the required readline libraries into /lib (assuming you aren't also on a merged-usr system!) long enough to effect deeper repairs.
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Siarhei
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PostPosted: Sat Jun 29, 2024 7:15 pm    Post subject: Reply with quote

Hu wrote:
As a guess:
  • Your readline is installed in /usr/lib
  • Your /usr is not part of /, and is not mounted by an initramfs, but instead by /etc/fstab.
Is that correct? If so, then the fix is to mount /usr before you run /sbin/init. As an ugly workaround, you could copy the required readline libraries into /lib (assuming you aren't also on a merged-usr system!) long enough to effect deeper repairs.


/usr is part of /. I'll try to describe in more detail what I did. After update system I did "emerge -av --depclean" as ususal. Portage suggested running the command. After rebuilding 8 packages, the system began to generate errors. When I entered the command I received the output "/bin/sh: undefined symbol: rl_trim_arg_fromkeyse". I shouldn't have restarted my computer. I have a fresh system image Calculate Linux Desktop. Maybe I can use it to restore the system? I don't want to reinstall the system, 15 years with it
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Hu
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PostPosted: Sat Jun 29, 2024 8:00 pm    Post subject: Reply with quote

Repair is almost certainly possible, and with 15 years of history at stake, repair seems desirable.

Using a rescue image, please provide the following:
  • Last 100 lines of /var/log/emerge.log, so we can try to understand what you removed and what you built.
  • ls -l / /usr /etc/portage/make.profile /lib*/lib*readline* /usr/lib*/lib*readline*
You may need to run those from outside the chroot, if the programs in Gentoo are badly broken. If so, adjust the paths accordingly.
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Siarhei
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PostPosted: Sun Jun 30, 2024 5:54 am    Post subject: Reply with quote

Hu wrote:
Repair is almost certainly possible, and with 15 years of history at stake, repair seems desirable.

Using a rescue image, please provide the following:
  • Last 100 lines of /var/log/emerge.log, so we can try to understand what you removed and what you built.
  • ls -l / /usr /etc/portage/make.profile /lib*/lib*readline* /usr/lib*/lib*readline*
You may need to run those from outside the chroot, if the programs in Gentoo are badly broken. If so, adjust the paths accordingly.


emerge.log
https://pastebin.mozilla.org/Gmmn58td

ls -l /mnt/gentoo/
Code:
drwxr-xr-x   2 root    root     4096 июн 29 08:23 bin
drwxr-xr-x   2 root    root     4096 ноя 27  2016 boot
drwxr-xr-x   2 root    root     4096 окт 10  2009 cache
drwxr-xr-x   2 root    root     4096 ноя 27  2016 dev
drwxr-xr-x 120 root    root    12288 июн 29 09:01 etc
drwxrwxrwx   3 root    root     4096 июн 30 08:05 home
srw-------   1 root    root        0 янв 19  2018 kdeinit5__0
srwxr-xr-x   1 root    root        0 янв 16  2017 klauncherJ17875.1.slave-socket
drwxr-xr-x  14 root    root     4096 мая 18 12:26 lib
lrwxrwxrwx   1 root    root        3 июн  8  2019 lib32 -> lib
drwxr-xr-x   7 root    root    12288 июн 29 08:23 lib64
drwx------   2 root    root    16384 ноя 27  2016 lost+found
drwxr-xr-x  14 root    root     4096 янв 29  2020 media
drwxr-xr-x   3 root    root     4096 ноя 27  2022 mnt
drwxr-xr-x   3 root    root     4096 сен 25  2009 net
drwxr-xr-x  13 root    root     4096 мая  8 18:20 opt
dr-xr-xr-x   2 root    root     4096 ноя 27  2016 proc
drwx------  50 root    root     4096 июн 29 09:12 root
drwxr-xr-x   2 root    root     4096 дек  5  2019 run
drwxr-xr-x   2 root    root    12288 июн 29 08:23 sbin
dr-xr-xr-x   2 root    root     4096 ноя 27  2016 sys
drwxr-xr-x   5 root    root     4096 дек  5  2019 tmp
drwxrwxr-x  15 portage portage  4096 июн 30  2019 usr
drwxr-xr-x  13 root    root     4096 мая  8 17:40 var


ls -l /mnt/gentoo/usr
Code:
drwxr-xr-x   3 root    root     81920 июн 29 09:01 bin
drwxr-xr-x 421 root    root     53248 июн 29 08:37 include
drwxr-xr-x   3 root    root      4096 апр  5  2009 kde
drwxr-xr-x 105 root    root     98304 июн 29 09:01 lib
drwxr-xr-x 115 root    root    200704 июн 29 09:01 lib64
drwxr-xr-x  24 root    root      4096 июн 29 08:21 libexec
drwxr-xr-x  10 root    root      4096 июн  8  2019 local
-rw-r--r--   1 root    root       943 дек  4  2016 my.cnf
drwxrwxr-x 175 portage portage   4096 мая  3  2020 portage
drwxr-xr-x   3 root    root      4096 мар 25  2009 qt
drwxr-xr-x   2 root    root     12288 июн 29 08:22 sbin
drwxr-xr-x 303 root    root     12288 июн 29 08:35 share
drwxr-xr-x   7 root    root      4096 июн 29 08:39 src
lrwxrwxrwx   1 root    root         8 мар 22  2009 tmp -> /var/tmp
drwxr-xr-x   6 root    root      4096 июн 17  2008 x86_64-pc-linux-gnu

ls -l /mnt/gentoo/etc/portage/make.profile
Code:
/mnt/gentoo/etc/portage/make.profile -> ../../usr/portage/profiles/default/linux/amd64/23.0/split-usr/desktop/plasma

ls -l /mnt/gentoo/lib*/lib*readline*
Code:
No such file or directory


ls -l /mnt/gentoo/usr/lib*/lib*readline*
Code:
lrwxrwxrwx 1 root root     16 июн 29 09:01 /mnt/gentoo/usr/lib64/libreadline.so -> libreadline.so.8
lrwxrwxrwx 1 root root     18 июн 29 09:01 /mnt/gentoo/usr/lib64/libreadline.so.8 -> libreadline.so.8.1
-rwxr-xr-x 1 root root 347120 июн 29 09:01 /mnt/gentoo/usr/lib64/libreadline.so.8.1
lrwxrwxrwx 1 root root     16 июн 29 09:01 /mnt/gentoo/usr/lib/libreadline.so -> libreadline.so.8
lrwxrwxrwx 1 root root     18 июн 29 09:01 /mnt/gentoo/usr/lib/libreadline.so.8 -> libreadline.so.8.1
-rwxr-xr-x 1 root root 327604 июн 29 09:01 /mnt/gentoo/usr/lib/libreadline.so.8.1

P.s. But I didn't delete anything. "depclean" gave an error and asked to run the command[/code]
Code:
emerge --newuse --update --autounmask=n --deep --keep-going --with-bdeps=y --quiet-build=n --regex-search-auto=y @world
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Genone
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PostPosted: Mon Jul 01, 2024 12:49 pm    Post subject: Reply with quote

Something very wrong going on there. According to emerge.log you were downgrading a ton of packages, including readline. This could very well be the reason for your problems if the mentioned symbol was introduced by that newer readline version you had installed previously. Don't know if you maybe got an outdated mirror , accidentally used an old snapshot or maybe your whole /usr tree got messed up somehow. Maybe check emerge --info for the repository timestamp. Also /mnt/gentoo/usr should not be owned by portage:portage, but that is probably just cosmetic.

In general, never ever run a large scale update without using --pretend first. If you'd see a ton of downgrades that should trigger an alarm to not proceed.

As a solution, probably best to obtain some binaries of the previously installed versions of all those downgraded packages first to fix any symbol errors, then remerge those packages one by one and making sure the correct version gets installed this time.
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Siarhei
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PostPosted: Mon Jul 01, 2024 2:54 pm    Post subject: Reply with quote

Genone wrote:
Something very wrong going on there. According to emerge.log you were downgrading a ton of packages, including readline. This could very well be the reason for your problems if the mentioned symbol was introduced by that newer readline version you had installed previously. Don't know if you maybe got an outdated mirror , accidentally used an old snapshot or maybe your whole /usr tree got messed up somehow. Maybe check emerge --info for the repository timestamp. Also /mnt/gentoo/usr should not be owned by portage:portage, but that is probably just cosmetic.

In general, never ever run a large scale update without using --pretend first. If you'd see a ton of downgrades that should trigger an alarm to not proceed.

As a solution, probably best to obtain some binaries of the previously installed versions of all those downgraded packages first to fix any symbol errors, then remerge those packages one by one and making sure the correct version gets installed this time.


Thank you for your advice. But I do not know how to restore the system without a working chroot. I cannot boot into the system
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Genone
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PostPosted: Mon Jul 01, 2024 3:40 pm    Post subject: Reply with quote

Siarhei wrote:
Thank you for your advice. But I do not know how to restore the system without a working chroot. I cannot boot into the system

You don't need a working chroot for the first step. Ideally all you need is a copy of the correct libreadline.so.8.2 binary that you can put into /mnt/gentoo/usr/lib/ and change the symlink libreadline.so.8 to point to libreadline.so.8.2 instead of the 8.1 version. That should fix the "undefined symbol" problem and allow you to at least get into the chroot (unless there are more problems we can't see yet).

Obtaining said copy may or may not be tricky though if you didn't have FEATURES=buildpkg (or buildsyspkg or unmerge-backup) enabled already when that version was installed, don't know which version is available on the public Gentoo binhost.

There are other options to solve this, but this would be the least invasive.
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PostPosted: Mon Jul 01, 2024 5:27 pm    Post subject: Reply with quote

Genone wrote:
Siarhei wrote:
Thank you for your advice. But I do not know how to restore the system without a working chroot. I cannot boot into the system

You don't need a working chroot for the first step. Ideally all you need is a copy of the correct libreadline.so.8.2 binary that you can put into /mnt/gentoo/usr/lib/ and change the symlink libreadline.so.8 to point to libreadline.so.8.2 instead of the 8.1 version. That should fix the "undefined symbol" problem and allow you to at least get into the chroot (unless there are more problems we can't see yet).

Obtaining said copy may or may not be tricky though if you didn't have FEATURES=buildpkg (or buildsyspkg or unmerge-backup) enabled already when that version was installed, don't know which version is available on the public Gentoo binhost.

There are other options to solve this, but this would be the least invasive.


OK, I'll do that. I hope it helps. Thank you for your help.
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PostPosted: Mon Jul 01, 2024 7:27 pm    Post subject: Reply with quote

It didn't work out. Most likely, the ibreadline.so.8.2 is not suitable. The system won't boot anyway
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sam_
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PostPosted: Mon Jul 01, 2024 10:47 pm    Post subject: Reply with quote

What happened?
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Siarhei
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PostPosted: Tue Jul 02, 2024 3:46 am    Post subject: Reply with quote

sam_ wrote:
What happened?


https://photos.app.goo.gl/ot59BYxuEFh8UShE7
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kimchi_sg
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PostPosted: Tue Jul 02, 2024 3:42 pm    Post subject: Reply with quote

Siarhei wrote:
sam_ wrote:
What happened?


https://photos.app.goo.gl/ot59BYxuEFh8UShE7


Or https://pasteboard.co/gPFjqGHGVLBG.jpg for those who do not want to step onto Google property.
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sam_
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PostPosted: Tue Jul 02, 2024 6:26 pm    Post subject: Reply with quote

Try doing bash too.
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Siarhei
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PostPosted: Wed Jul 03, 2024 10:33 am    Post subject: Reply with quote

And I saved the system! At least I've loaded into it. I realized that I love gentoo very much.

Genone, your advice saved my nerves.

Solution: "copy of the correct libreadline.so.8.2 binary that you can put into /mnt/gentoo/usr/lib/ and change the symlink libreadline.so.8 to point to libreadline.so.8.2 instead of the 8.1 version"

It remains to bring the updates back to normal

Thank you all for your help
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