panic: Data modified on freelist: word 4 of object 0xffff800010fc5d00 size 0x38 previous type free (0x0 != 0xdeafbead)

Starting stack trace...
panic(ffffffff83331fe0) at panic+0x1d0 sys/kern/subr_prf.c:229
malloc(38,7f,1) at malloc+0xcf8 sys/kern/kern_malloc.c:353
ktrsyscall(ffff80002a2b82b0,6e,30,ffff80002a2b7130) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff80002a2b7130) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a2b7130) at syscall+0x304 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ec30da2ccc0, count: 252
End of stack trace.