Comment # 9 on bug 1204607 from Gene Snider

I installed all the debug packages requested by gdb and got this result:

# coredumpctl -1 debug
           PID: 943 (irqbalance)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 6 (ABRT)
     Timestamp: Mon 2022-10-24 08:49:03 PDT (1 day 1h ago)
  Command Line: /usr/sbin/irqbalance --foreground
    Executable: /usr/sbin/irqbalance
 Control Group: /system.slice/irqbalance.service
          Unit: irqbalance.service
         Slice: system.slice
       Boot ID: 1fe3c0c81e464baab607f078ceddadd1
    Machine ID: 67007840ea464a92b139e093c5491dfd
      Hostname: Mobile-PC
       Storage:
/var/lib/systemd/coredump/core.irqbalance.0.1fe3c0c81e464baab607f078ceddadd1.943.1666626543000000.zst
(present)
     Disk Size: 58.6K
       Message: Process 943 (irqbalance) of user 0 dumped core.

...

Core was generated by `/usr/sbin/irqbalance --foreground'.
Program terminated with signal SIGABRT, Aborted.

warning: Section `.reg-xstate/943' in core file too small.
#0  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, 
    no_tid=no_tid@entry=0) at pthread_kill.c:44
44    pthread_kill.c: No such file or directory.
[Current thread is 1 (Thread 0x7f9d49af2780 (LWP 943))]
(gdb) bt
#0  __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, 
    no_tid=no_tid@entry=0) at pthread_kill.c:44
#1  0x00007f9d49c39893 in __pthread_kill_internal (signo=6, threadid=<optimized
out>)
    at pthread_kill.c:78
#2  0x00007f9d49be6846 in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#3  0x00007f9d49bcf81c in __GI_abort () at abort.c:79
#4  0x00007f9d49c2c9ae in __libc_message (action=action@entry=do_abort, 
    fmt=fmt@entry=0x7f9d49d5544f "%s\n") at ../sysdeps/posix/libc_fatal.c:155
#5  0x00007f9d49c4414c in malloc_printerr (
    str=str@entry=0x7f9d49d58088 "free(): double free detected in tcache 2") at
malloc.c:5660
#6  0x00007f9d49c46626 in _int_free (av=0x7f9d49d8ec60 <main_arena>,
p=0x564f3e856190, 
    have_lock=have_lock@entry=0) at malloc.c:4469
#7  0x00007f9d49c48b13 in __GI___libc_free (mem=<optimized out>) at
malloc.c:3385
#8  0x00007f9d49e99938 in nl_socket_free (sk=<optimized out>) at
lib/socket.c:250
#9  0x0000564f3cfacea0 in deinit_thermal () at
/usr/src/debug/irqbalance-1.9.1/thermal.c:510
#10 0x0000564f3cfa6f41 in main (argc=<optimized out>, argv=<optimized out>)
    at /usr/src/debug/irqbalance-1.9.1/irqbalance.c:722
(gdb)

Gene