not sure if this gives helpful information, but here is a backtrace:
# gdb --pid=26353
GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 26353
Reading symbols from target:/lib/systemd/systemd-resolved...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libc-2.27.so...done.
done.
Reading symbols from target:/lib/systemd/libsystemd-shared-237.so...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libgpg-error.so.0...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libm.so.6...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libm-2.27.so...done.
done.
Reading symbols from target:/lib/x86_64-linux-gnu/libgcrypt.so.20...(no debugging symbols found)...done.
Reading symbols from target:/lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/librt.so.1...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//librt-2.27.so...done.
done.
Reading symbols from target:/lib/x86_64-linux-gnu/libcap.so.2...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libacl.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libcryptsetup.so.12...(no debugging symbols found)...done.
Reading symbols from target:/usr/lib/x86_64-linux-gnu/libip4tc.so.0...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libseccomp.so.2...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libselinux.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libidn.so.11...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/liblzma.so.5...(no debugging symbols found)...done.
Reading symbols from target:/usr/lib/x86_64-linux-gnu/liblz4.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libblkid.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libpthread.so.0...Reading symbols from /usr/lib/debug/.build-id/28/c6aade70b2d40d1f0f3d0a1a0cad1ab816448f.debug...done.
done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Reading symbols from target:/lib/x86_64-linux-gnu/libattr.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libuuid.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libdevmapper.so.1.02.1...(no debugging symbols found)...done.
Reading symbols from target:/usr/lib/x86_64-linux-gnu/libargon2.so.0...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libjson-c.so.3...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libpcre.so.3...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libdl.so.2...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libdl-2.27.so...done.
done.
Reading symbols from target:/lib/x86_64-linux-gnu/libudev.so.1...(no debugging symbols found)...done.
Reading symbols from target:/lib/x86_64-linux-gnu/libnss_compat.so.2...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libnss_compat-2.27.so...done.
done.
Reading symbols from target:/lib/x86_64-linux-gnu/libnss_nis.so.2...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libnss_nis-2.27.so...done.
done.
Reading symbols from target:/lib/x86_64-linux-gnu/libnsl.so.1...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libnsl-2.27.so...done.
done.
Reading symbols from target:/lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug/lib/x86_64-linux-gnu//libnss_files-2.27.so...done.
done.
0x00007f7016940b77 in epoll_wait (epfd=4, events=0x7fffaadc3100, maxevents=14, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
30 ../sysdeps/unix/sysv/linux/epoll_wait.c: No such file or directory.
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) n
Program not restarted.
(gdb) c
Continuing.
Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007f701685f801 in __GI_abort () at abort.c:79
#2 0x00007f7016428676 in log_assert_failed_realm () from target:/lib/systemd/libsystemd-shared-237.so
#3 0x000055dfa6e93af1 in ?? ()
#4 0x000055dfa6e93c0b in ?? ()
#5 0x00007f701644441e in ?? () from target:/lib/systemd/libsystemd-shared-237.so
#6 0x00007f701644469a in sd_event_dispatch () from target:/lib/systemd/libsystemd-shared-237.so
#7 0x00007f7016444829 in sd_event_run () from target:/lib/systemd/libsystemd-shared-237.so
#8 0x00007f7016444a6b in sd_event_loop () from target:/lib/systemd/libsystemd-shared-237.so
#9 0x000055dfa6e8e72b in ?? ()
#10 0x00007f7016840b97 in __libc_start_main (main=0x55dfa6e8d300, argc=1, argv=0x7fffaadc34f8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffaadc34e8) at ../csu/libc-start.c:310
#11 0x000055dfa6e8edfa in ?? ()
not sure if this gives helpful information, but here is a backtrace:
# gdb --pid=26353 gnu.org/ licenses/ gpl.html> www.gnu. org/software/ gdb/bugs/>. www.gnu. org/software/ gdb/documentati on/>. /lib/systemd/ systemd- resolved. ..(no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libc. so.6... Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libc-2. 27.so.. .done. /lib/systemd/ libsystemd- shared- 237.so. ..(no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libgpg- error.so. 0...(no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libm. so.6... Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libm-2. 27.so.. .done. /lib/x86_ 64-linux- gnu/libgcrypt. so.20.. .(no debugging symbols found)...done. /lib64/ ld-linux- x86-64. so.2... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/librt. so.1... Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /librt- 2.27.so. ..done. /lib/x86_ 64-linux- gnu/libcap. so.2... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libacl. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libcryptset up.so.12. ..(no debugging symbols found)...done. /usr/lib/ x86_64- linux-gnu/ libip4tc. so.0... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libseccomp. so.2... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libselinux. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libidn. so.11.. .(no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/liblzma. so.5... (no debugging symbols found)...done. /usr/lib/ x86_64- linux-gnu/ liblz4. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libblkid. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libpthread. so.0... Reading symbols from /usr/lib/ debug/. build-id/ 28/c6aade70b2d4 0d1f0f3d0a1a0ca d1ab816448f. debug.. .done. 64-linux- gnu/libthread_ db.so.1" . /lib/x86_ 64-linux- gnu/libattr. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libuuid. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libdevmappe r.so.1. 02.1... (no debugging symbols found)...done. /usr/lib/ x86_64- linux-gnu/ libargon2. so.0... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libjson- c.so.3. ..(no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libpcre. so.3... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libdl. so.2... Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libdl- 2.27.so. ..done. /lib/x86_ 64-linux- gnu/libudev. so.1... (no debugging symbols found)...done. /lib/x86_ 64-linux- gnu/libnss_ compat. so.2... Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libnss_ compat- 2.27.so. ..done. /lib/x86_ 64-linux- gnu/libnss_ nis.so. 2...Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libnss_ nis-2.27. so...done. /lib/x86_ 64-linux- gnu/libnsl. so.1... Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libnsl- 2.27.so. ..done. /lib/x86_ 64-linux- gnu/libnss_ files.so. 2...Reading symbols from /usr/lib/ debug/lib/ x86_64- linux-gnu/ /libnss_ files-2. 27.so.. .done. 0x7fffaadc3100, maxevents=14, timeout=-1) at ../sysdeps/ unix/sysv/ linux/epoll_ wait.c: 30 unix/sysv/ linux/epoll_ wait.c: No such file or directory.
GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://
Find the GDB manual and other documentation resources online at:
<http://
For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 26353
Reading symbols from target:
Reading symbols from target:
done.
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
done.
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
done.
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
Reading symbols from target:
done.
Reading symbols from target:
Reading symbols from target:
done.
Reading symbols from target:
done.
Reading symbols from target:
done.
Reading symbols from target:
done.
0x00007f7016940b77 in epoll_wait (epfd=4, events=
30 ../sysdeps/
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) n
Program not restarted.
(gdb) c
Continuing.
Program received signal SIGABRT, Aborted. unix/sysv/ linux/raise. c:51 unix/sysv/ linux/raise. c: No such file or directory. unix/sysv/ linux/raise. c:51 failed_ realm () from target: /lib/systemd/ libsystemd- shared- 237.so /lib/systemd/ libsystemd- shared- 237.so /lib/systemd/ libsystemd- shared- 237.so /lib/systemd/ libsystemd- shared- 237.so /lib/systemd/ libsystemd- shared- 237.so 8d300, argc=1, argv=0x7fffaadc 34f8, init=<optimized out>, fini=<optimized out>, fini=<optimized out>, stack_end= 0x7fffaadc34e8) at ../csu/ libc-start. c:310
__GI_raise (sig=sig@entry=6) at ../sysdeps/
51 ../sysdeps/
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/
#1 0x00007f701685f801 in __GI_abort () at abort.c:79
#2 0x00007f7016428676 in log_assert_
#3 0x000055dfa6e93af1 in ?? ()
#4 0x000055dfa6e93c0b in ?? ()
#5 0x00007f701644441e in ?? () from target:
#6 0x00007f701644469a in sd_event_dispatch () from target:
#7 0x00007f7016444829 in sd_event_run () from target:
#8 0x00007f7016444a6b in sd_event_loop () from target:
#9 0x000055dfa6e8e72b in ?? ()
#10 0x00007f7016840b97 in __libc_start_main (main=0x55dfa6e
rtld_
#11 0x000055dfa6e8edfa in ?? ()