------------[ cut here ]------------
WARNING: CPU: 1 PID: 18071 at drivers/ata/libata-core.c:5391 ata_qc_issue+0x519/0xea0 drivers/ata/libata-core.c:5390
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 18071 Comm: syz-executor1 Not tainted 4.13.0-rc5-next-20170816+ #4
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x417 kernel/panic.c:180
 __warn+0x1c4/0x1d9 kernel/panic.c:541
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
 do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:310
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:930
RIP: 0010:ata_qc_issue+0x519/0xea0 drivers/ata/libata-core.c:5390
RSP: 0018:ffff8800386766b8 EFLAGS: 00010016
RAX: 0000000000010000 RBX: 0000000000000002 RCX: ffffc900016b1000
RDX: 0000000000000207 RSI: ffffffff835fd2d9 RDI: ffff88006b4f0290
RBP: ffff8800386767d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: ffffed000d69e046 R12: 0000000000000000
R13: ffff88006b4f238c R14: ffff88006b4f01f8 R15: ffff88006b4f0080
 ata_scsi_translate+0x34a/0x5e0 drivers/ata/libata-scsi.c:2023
 __ata_scsi_queuecmd drivers/ata/libata-scsi.c:4325 [inline]
 ata_scsi_queuecmd+0x2ae/0x6b0 drivers/ata/libata-scsi.c:4374
 scsi_dispatch_cmd+0x432/0xb60 drivers/scsi/scsi_lib.c:1686
 scsi_queue_rq+0x155a/0x1e00 drivers/scsi/scsi_lib.c:1962
 blk_mq_dispatch_rq_list+0x8bc/0x1720 block/blk-mq.c:1073
 blk_mq_sched_dispatch_requests+0x752/0xb40 block/blk-mq-sched.c:147
 __blk_mq_run_hw_queue+0x1aa/0x280 block/blk-mq.c:1155
 __blk_mq_delay_run_hw_queue+0x175/0x1b0 block/blk-mq.c:1203
 blk_mq_run_hw_queue+0x1e/0x30 block/blk-mq.c:1224
 blk_mq_sched_insert_request+0x275/0x890 block/blk-mq-sched.c:386
 blk_execute_rq_nowait+0x16d/0x310 block/blk-exec.c:64
 sg_common_write.isra.17+0xf80/0x1c10 drivers/scsi/sg.c:806
 sg_new_write.isra.20+0x5c0/0x830 drivers/scsi/sg.c:746
 sg_ioctl+0x1fb5/0x2ec0 drivers/scsi/sg.c:857
 vfs_ioctl fs/ioctl.c:45 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:685
 SYSC_ioctl fs/ioctl.c:700 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x446739
RSP: 002b:00007f2902f60c08 EFLAGS: 00000282 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000446739
RDX: 0000000020007000 RSI: 0000000000002285 RDI: 0000000000000005
RBP: 0000000000708000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000282 R12: 00000000ffffffff
R13: 00000000000037d0 R14: 00000000006e5890 R15: 0000000000002000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..