GNU gdb (GDB) 8.2.50.20180917-alt2 (ALT Sisyphus)
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-alt-linux".
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"...
Reading symbols from /lib/systemd/systemd-udevd...
Reading symbols from /usr/lib/debug/lib/systemd/systemd-udevd.debug...
[New LWP 2218]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/lib/systemd/systemd-udevd'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __strrchr_avx2 () at ../sysdeps/x86_64/multiarch/strrchr-avx2.S:54
54		vmovdqu	(%rdi), %ymm1
(gdb) bt
#0  __strrchr_avx2 () at ../sysdeps/x86_64/multiarch/strrchr-avx2.S:54
#1  0x0000559068f38f81 in device_set_sysname (device=0x55906ab4bd90) at ../src/libsystemd/sd-device/sd-device.c:1005
#2  0x0000559068f3af95 in sd_device_get_sysname (device=device@entry=0x55906ab4bd90, ret=ret@entry=0x7ffc16583390) at ../src/libsystemd/sd-device/sd-device.c:1049
#3  0x0000559068f37b66 in device_append (device=device@entry=0x55906ab4bd90, key=<optimized out>, key@entry=0x7ffc165835f5 "ACTION", _major=_major@entry=0x7ffc16583418, 
    _minor=_minor@entry=0x7ffc16583420, _seqnum=_seqnum@entry=0x7ffc16583428, _action=_action@entry=0x7ffc1658340c) at ../src/libsystemd/sd-device/device-private.c:333
#4  0x0000559068f37cc4 in device_new_from_nulstr (ret=ret@entry=0x7ffc16583490, nulstr=nulstr@entry=0x7ffc165835f5 "ACTION", len=len@entry=162)
    at ../src/libsystemd/sd-device/device-private.c:450
#5  0x0000559068f3536d in device_monitor_receive_device (m=m@entry=0x55906ab50be0, ret=ret@entry=0x7ffc16585610) at ../src/libsystemd/sd-device/device-monitor.c:453
#6  0x0000559068f35753 in device_monitor_event_handler (s=<optimized out>, fd=<optimized out>, revents=<optimized out>, userdata=0x55906ab50be0)
    at ../src/libsystemd/sd-device/device-monitor.c:200
#7  0x0000559068f45e90 in source_dispatch (s=s@entry=0x55906ab28e40) at ../src/libsystemd/sd-event/sd-event.c:2816
#8  0x0000559068f4753f in sd_event_dispatch (e=e@entry=0x55906ab35680) at ../src/libsystemd/sd-event/sd-event.c:3229
#9  0x0000559068f476f0 in sd_event_run (e=e@entry=0x55906ab35680, timeout=timeout@entry=18446744073709551615) at ../src/libsystemd/sd-event/sd-event.c:3286
#10 0x0000559068f4790b in sd_event_loop (e=0x55906ab35680) at ../src/libsystemd/sd-event/sd-event.c:3308
#11 0x0000559068f0ec6e in main_loop (cgroup=<optimized out>, fd_uevent=3, fd_ctrl=<optimized out>) at ../src/udev/udevd.c:1739
#12 run (argv=<optimized out>, argc=<optimized out>) at ../src/udev/udevd.c:1861
#13 main (argc=<optimized out>, argv=<optimized out>) at ../src/udev/udevd.c:1864
(gdb) quit
           PID: 2218 (systemd-udevd)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 11 (SEGV)
     Timestamp: Thu 2019-01-03 13:29:09 +04 (12min ago)
  Command Line: /lib/systemd/systemd-udevd
    Executable: /lib/systemd/systemd-udevd
 Control Group: /system.slice/systemd-udevd.service
          Unit: systemd-udevd.service
         Slice: system.slice
       Boot ID: 9bb4bacbd9e343e6a329fe715785a1f8
    Machine ID: a82c8771da5b9896214720425b1680b4
      Hostname: titan.localdomain
       Storage: /var/lib/systemd/coredump/core.systemd-udevd.0.9bb4bacbd9e343e6a329fe715785a1f8.2218.1546507749000000.lz4
       Message: Process 2218 (systemd-udevd) of user 0 dumped core.
                
                Stack trace of thread 2218:
                #0  0x00007f303e87f0d7 __strrchr_avx2 (libc.so.6)
                #1  0x0000559068f38f81 n/a (systemd-udevd)
                #2  0x0000559068f3af95 n/a (systemd-udevd)
                #3  0x0000559068f37b66 n/a (systemd-udevd)
                #4  0x0000559068f37cc4 n/a (systemd-udevd)
                #5  0x0000559068f3536d n/a (systemd-udevd)
                #6  0x0000559068f35753 n/a (systemd-udevd)
                #7  0x0000559068f45e90 n/a (systemd-udevd)
                #8  0x0000559068f4753f n/a (systemd-udevd)
                #9  0x0000559068f476f0 n/a (systemd-udevd)
                #10 0x0000559068f4790b n/a (systemd-udevd)
                #11 0x0000559068f0ec6e n/a (systemd-udevd)
                #12 0x00007f303e74808b __libc_start_main (libc.so.6)
                #13 0x0000559068f0f3ca n/a (systemd-udevd)