Created attachment 812387 [details]
POC
To run the reproducer simply run valgrind schismtracker test01.mtm
OUTPUT
==4890== Process terminating with default action of signal 11 (SIGSEGV):
dumping core
==4890== Bad permissions for mapped region at address 0xA052044
==4890== at 0x4C355C5: __strcpy_chk (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==4890== by 0x142596: UnknownInlinedFun (string_fortified.h:90)
==4890== by 0x142596: fmt_mtm_load_song (mtm.c:139)
==4890== by 0x17B0F6: song_create_load (audio_loadsave.c:214)
==4890== by 0x17B23B: song_load_unchecked (audio_loadsave.c:270)
==4890== by 0x117876: main (main.c:1124)
==4890==