[FIRST RUN — di_size=4096, the finding's value; probabilistic INVARIANTS slab-magic trap]

panic: assertion "z->z_Magic == ZALLOC_SLAB_MAGIC" failed in _kfree at /usr/src/sys/kern/kern_slaballoc.c:1478
cpuid = 2
Trace beginning at frame 0xfffff80117c836d8
_kfree() at _kfree+0x50e 0xffffffff8065838e 
_kfree() at _kfree+0x50e 0xffffffff8065838e 
soclose() at soclose+0x83 0xffffffff806c7b83 
soo_close() at soo_close+0x27 0xffffffff806b00e7 
fdrop() at fdrop+0x20f 0xffffffff806315df 
closef() at closef+0x32 0xffffffff80631f22 
Debugger("panic")

CPU2 stopping CPUs: 0x0000003b
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>