https://bz.apache.org/bugzilla/show_bug.cgi?id=64533

--- Comment #29 from Ruediger Pluem <[email protected]> ---
There seem to be further ones:

#0  0x00007fcf591f2664 in __do_global_dtors_aux () from
/lib64/libnss_files.so.2
[Current thread is 1 (Thread 0x7fcf59dc0900 (LWP 3563021))]
(gdb) bt
#0  0x00007fcf591f2664 in __do_global_dtors_aux () from
/lib64/libnss_files.so.2
#1  0x00007fcf5a30d2eb in _dl_fini () at dl-fini.c:138
#2  0x00007fcf59f0ee87 in __run_exit_handlers (status=status@entry=0,
listp=0x7fcf5a092578 <__exit_funcs>, 
    run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true)
at exit.c:108
#3  0x00007fcf59f0f040 in __GI_exit (status=status@entry=0) at exit.c:139
#4  0x00007fcf5921d716 in clean_child_exit (code=code@entry=0) at event.c:738
#5  0x00007fcf5921d73d in just_die (sig=<optimized out>) at event.c:743
#6  <signal handler called>
#7  pthread_sigmask (how=how@entry=1, newmask=<optimized out>,
newmask@entry=0x7fff02b26230, oldmask=oldmask@entry=0x0)
    at ../sysdeps/unix/sysv/linux/pthread_sigmask.c:48
#8  0x00007fcf5921ccd5 in unblock_signal (sig=sig@entry=15) at event.c:1264
#9  0x00007fcf5921e5d4 in child_main (child_num_arg=child_num_arg@entry=14,
child_bucket=child_bucket@entry=0) at event.c:2586
#10 0x00007fcf5921e914 in make_child (s=0x563ebcececf0, slot=slot@entry=14,
bucket=bucket@entry=0) at event.c:2691
#11 0x00007fcf5921f290 in perform_idle_server_maintenance
(num_buckets=<optimized out>, child_bucket=<optimized out>) at event.c:2886
#12 server_main_loop (num_buckets=1, remaining_children_to_start=0) at
event.c:3015
#13 event_run (_pconf=<optimized out>, plog=<optimized out>, s=<optimized out>)
at event.c:3092
#14 0x0000563ebc837ce0 in ap_run_mpm (pconf=0x563ebcea5a48,
plog=0x563ebced2c68, s=0x563ebcececf0) at mpm_common.c:94
#15 0x0000563ebc821eb3 in main (argc=<optimized out>, argv=<optimized out>) at
main.c:819

and

#0  0x00007fcf59e0b5f0 in __do_global_dtors_aux () from /lib64/liblzma.so.5
#1  0x00007fcf5a30d2eb in _dl_fini () from /lib64/ld-linux-x86-64.so.2
#2  0x00007fcf59f0ee87 in __run_exit_handlers () from /lib64/libc.so.6
#3  0x00007fcf59f0f040 in exit () from /lib64/libc.so.6
#4  0x00007fcf5921d716 in clean_child_exit () from
/usr/lib64/httpd/modules/mod_mpm_event.so
#5  0x00007fcf5921d73d in just_die () from
/usr/lib64/httpd/modules/mod_mpm_event.so
#6  <signal handler called>
#7  0x00007fcf5a0b13cb in pthread_sigmask () from /lib64/libpthread.so.0
#8  0x00007fcf5921ccd5 in unblock_signal () from
/usr/lib64/httpd/modules/mod_mpm_event.so
#9  0x00007fcf5921e5d4 in child_main () from
/usr/lib64/httpd/modules/mod_mpm_event.so
#10 0x00007fcf5921e914 in make_child () from
/usr/lib64/httpd/modules/mod_mpm_event.so
#11 0x00007fcf5921f290 in event_run () from
/usr/lib64/httpd/modules/mod_mpm_event.so
#12 0x0000563ebc837ce0 in ap_run_mpm ()
#13 0x0000563ebc821eb3 in main ()

Looks like crashes in library shutdown handlers when httpd is stopped.
Do we ever use liblzma in vanialla httpd?

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