Attached a reproducing script.

Easy reproducer is:

$ lxc launch ubuntu:24.04 v1 --vm -c limits.cpu=2 -c limits.memory=8GiB -d 
root,size=32GiB
$ lxc file push reproduce-zsh-cleanfilelist-crash.sh v1/root
$ lxc shell v1
root@v1:~# apt update && apt install zsh
root@v1:~# chmod +x ./reproduce-zsh-cleanfilelist-crash.sh
root@v1:~# ./reproduce-zsh-cleanfilelist-crash.sh /usr/bin/zsh 5
attempt 1: reproduced SIGSEGV (status 139)
root@v1:~#
root@v1:~# cd /var/crash/
root@v1:/var/crash# ls -al
total 140
drwxrwsrwt  2 root root   4096 Sep 30 19:53 .
drwxr-xr-x 13 root root   4096 Sep 30 19:52 ..
-rw-r-----  1 root root 133676 Sep 30 19:53 _usr_bin_zsh.0.crash


** Attachment added: "Reproducer script"
   
https://bugs.launchpad.net/ubuntu/+source/zsh/+bug/2169067/+attachment/6003995/+files/reproduce-zsh-cleanfilelist-crash.sh

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https://bugs.launchpad.net/bugs/2169067

Title:
  zsh crash (SIGSEGV) cleanfilelist null pointer

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