=== DF-0782 run #3 (unpatched #0 kernel, fresh reset) ===
Same trigger: maxx write at offset 0x7FFFFFFFFFFFFFF0.
RESULT: PANIC (same signature) — vm status down.
panic: assertion "newsize >= 0" failed in fuse_reg_resize at fuse_vnops.c:1970
fuse_reg_resize() at fuse_reg_resize+0xd9
fuse_vop_write() at fuse_vop_write+0x322
=== 3/3 deterministic reproduction confirmed ===