cd0: 16.000MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present
Mounting root from hammer2:vbd0s1d
hammer2_mount: root devstr="vbd0s1d"
hammer2_mount: device="vbd0s1d" label="ROOT" rdonly=1
hammer2_ondisk: "/dev/vbd0s1d" zone=2 id=0 offset=0x0000000000000000 size=0x000000063f000000
hammer2_mount: hmp=0xfffff8008fae0000 pmp=0xfffff80090280000
DMA space used: 13580k, remaining available: 131072k
Mounting devfs
hammer2_mount: "vbd0s1d": no recovery needed
hammer2: enable read/write
HAMMER2: VOLDATA DUMP
HAMMER2: INITIATE SPANs
swap low/high-water marks set to 41940/62910
poc: allocating 2147483648 bytes (2 GiB, oversized)
poc: got 2 GiB @ 0xfffff801185e0000
poc: kmalloc_usable_size = 0xffffffff80000000 (expect 0x0000000080000000 if OK)
poc: BUG CONFIRMED (line 1261): usable_size overflowed!
poc: now kfree M-bM^@M^T on buggy kernel expect panic here
poc: kfree returned OK (fixed kernel)