Mock uses the "bootstrap" chroot mechanism by default nowadays, so simply any command like this fails: $ mock --chroot fedora-rawhide-ppc64le <src.rpm> ... SIGILL ... But reproducer without Mock, on up2date F35 machine: # rpm -q kernel-core glibc dnf libdnf kernel-core-5.19.6-100.fc35.ppc64le glibc-2.34-40.fc35.ppc64le dnf-4.13.0-1.fc35.noarch libdnf-0.68.0-1.fc35.ppc64le # dnf -y --installroot /tmp/chroot --releasever 38 install dnf # rm -f /tmp/chroot/etc/resolv.conf && cp /etc/resolv.conf /tmp/chroot/etc/resolv.conf # chroot /tmp/chroot bash-5.1# dnf update Illegal instruction (core dumped) An strace snippet, not sure if helpful: socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP) = 12 ... snip ... read(12, "N\341\nt\347\212\350j\304E\32\343l\376\365\220\246\377\223c\200\241\242\344Z\v\17\225\312\306\35\254"..., 161) = 161 --- SIGILL {si_signo=SIGILL, si_code=ILL_ILLOPC, si_addr=0x7fff8fd6738c} -- I can provide this testing machine if anyhow helpful, still running root@2620:52:3:1:dead:beef:cafe:c213
I believe this is a duplicate of #2124845
For us, the work-around is to enforce Power9 machines for fedora-rawhide-ppc64le chroot (https://pagure.io/copr/copr/issue/2310).
Per Dan's instruction, journal has errors like: kernel: dnf[7698]: illegal instruction (4) at 7fff993a738c nip 7fff993a738c lr 7fff99302968 code 1 in libcrypto.so.3.0.5[7fff990c0000+300000] So this appears to be a duplicate. Thanks! *** This bug has been marked as a duplicate of bug 2124845 ***