=== DF-2605 baseline panic (radix=17, unpatched #0 kernel) ===
Illegal: 0000000001c00000 0000000001c01000+00020000 / ffffffffffff0000
panic: assertion "pbase != 0 && ((lbase + lsize - 1) & pmask) == pbase" failed in hammer2_io_alloc at /usr/src/sys/vfs/hammer2/hammer2_io.c:126
_hammer2_io_getblk() at _hammer2_io_getblk+0xc6 0xffffffff80964d46 
_hammer2_io_getblk() at _hammer2_io_getblk+0xc6 0xffffffff80964d46 
_hammer2_io_bread() at _hammer2_io_bread+0x17 0xffffffff80965397 
hammer2_chain_load_data() at hammer2_chain_load_data+0x2a5 0xffffffff8096f4a5 
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>