virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f27f0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
[    0serialport: Connected to syzkaller.us-central1-c.ci-upstream-net-this-kasan-gce-test-1 port 1 (session ID: e72bd3249fa5f4b40b974e21e6d99e16e8384254f2e85c0fe39918dcc479fa4d, active connections: 1).
.000000][    T0] UBSAN: negation-overflow in lib/sort.c:199:36