It looks like Fedora kernels uses gcc11 and generates debuginfo in DWARF 5 format. [root@localhost ~]# rpm -q crash crash-7.2.9-5.fc35.x86_64 [root@localhost ~]# uname -a Linux localhost.localdomain 5.11.12-300.fc34.x86_64 #1 SMP Wed Apr 7 16:31:13 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux [root@localhost ~]# crash -1 Dwarf Error: wrong version in compilation unit header (is 5, should be 2, 3, or 4) [in module /usr/lib/debug/usr/lib/modules/5.11.12-300.fc34.x86_64/vmlinux] crash: gdb_session_init: pulling in debug data by accessing init_mm.mmap Dwarf Error: wrong version in compilation unit header (is 5, should be 2, 3, or 4) [in module /usr/lib/debug/usr/lib/modules/5.11.12-300.fc34.x86_64/vmlinux] crash: /usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux: no debugging data available [root@localhost ~]# ls -al /usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux -rwxr-xr-x. 1 root root 679679112 Apr 7 20:14 /usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux [root@localhost ~]# rpm -qf /usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux kernel-debuginfo-5.11.12-300.fc34.x86_64 NB: last fc35 does not work too. Thank you, Vasily Averin