------------[ cut here ]------------
WARNING: CPU: 1 PID: 11946 at drivers/ata/libata-core.c:5395 ata_qc_issue+0x512/0xe40 drivers/ata/libata-core.c:5394
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 11946 Comm: syz-executor2 Not tainted 4.14.0-rc5-next-20171018+ #8
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+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1c4/0x1e0 kernel/panic.c:546
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:177
 do_trap_no_signal arch/x86/kernel/traps.c:211 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:260
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:297
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:310
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:ata_qc_issue+0x512/0xe40 drivers/ata/libata-core.c:5394
RSP: 0018:ffff88003b33ef60 EFLAGS: 00010006
RAX: 0000000000010000 RBX: 0000000000000002 RCX: ffffffff837472d2
RDX: 0000000000000500 RSI: ffffc9000348d000 RDI: ffff88003c0b0250
RBP: ffff88003b33f068 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: ffffed000781603e R12: 0000000000000000
R13: ffff88003c0b0208 R14: ffff88003c0b0040 R15: ffff88003c0b01b8
 ata_scsi_translate+0x34a/0x5e0 drivers/ata/libata-scsi.c:2024
 __ata_scsi_queuecmd drivers/ata/libata-scsi.c:4326 [inline]
 ata_scsi_queuecmd+0x2ae/0x6b0 drivers/ata/libata-scsi.c:4375
 scsi_dispatch_cmd+0x432/0xb60 drivers/scsi/scsi_lib.c:1713
 scsi_request_fn+0xdf0/0x1e50 drivers/scsi/scsi_lib.c:1851
 __blk_run_queue_uncond block/blk-core.c:376 [inline]
 __blk_run_queue+0x1a6/0x370 block/blk-core.c:396
 __elv_add_request+0x497/0xce0 block/elevator.c:673
 blk_execute_rq_nowait+0x1f8/0x310 block/blk-exec.c:77
 blk_execute_rq+0x109/0x1c0 block/blk-exec.c:101
 sg_scsi_ioctl+0x38b/0x750 block/scsi_ioctl.c:508
 sg_ioctl+0x1f08/0x2d90 drivers/scsi/sg.c:1078
 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: 0033:0x447c89
RSP: 002b:00007f0e93838bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0e938396cc RCX: 0000000000447c89
RDX: 0000000020001000 RSI: 0000000000000001 RDI: 0000000000000013
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000084f0 R14: 00000000006ec590 R15: 00007f0e93839700
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..