Comment # 2 on bug 1086732 from Victor Zhestkov

Probably the same issue.
Here is the backtrace from my system.
#0  0x00007f951a1f69eb in raise () from /lib64/libc.so.6
#1  0x00007f951a1f7da1 in abort () from /lib64/libc.so.6
#2  0x00007f951a239c87 in __libc_message () from /lib64/libc.so.6
#3  0x00007f951a24029a in malloc_printerr () from /lib64/libc.so.6
#4  0x00007f951a241aac in _int_free () from /lib64/libc.so.6
#5  0x00007f9511db35a4 in token_is_bool () from /usr/lib64/libsmbios_c.so.2
#6  0x00007f9511b8f88b in fwup_esrt_disabled () from /usr/lib64/libfwup.so.1
#7  0x00007f9511b8fa98 in fwup_supported () from /usr/lib64/libfwup.so.1
#8  0x00007f951066f911 in fu_plugin_startup (plugin=0x565467f754f0,
error=0x7ffdc9ac7878) at ../plugins/uefi/fu-plugin-uefi.c:703
#9  0x00005654661136ac in fu_plugin_runner_startup
(plugin=plugin@entry=0x565467f754f0, error=error@entry=0x7ffdc9ac7878)
    at ../src/fu-plugin.c:790
#10 0x000056546610a21f in fu_engine_plugins_setup (self=0x565467f22860) at
../src/fu-engine.c:2925
#11 fu_engine_load (self=0x565467f22860, error=0x7ffdc9ac78f8) at
../src/fu-engine.c:3544
#12 0x00005654660fe423 in main (argc=<optimized out>, argv=<optimized out>) at
../src/fu-main.c:1088


I've disabled dell plugin failed to startup, but it's still crashing.

Fu-Message: 16:52:05.061: disabling plugin because: failed to startup dell:
Firmware updating not supported
free(): invalid pointer
Aborted (core dumped)