------------[ cut here ]------------
WARNING: CPU: 0 PID: 6965 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: 0 PID: 6965 Comm: syz-executor2 Not tainted 4.13.0-rc6-next-20170824+ #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:181
 __warn+0x1c4/0x1e0 kernel/panic.c:542
 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+0x18/0x20 arch/x86/entry/entry_64.S:929
RIP: 0010:ata_qc_issue+0x519/0xea0 drivers/ata/libata-core.c:5390
RSP: 0018:ffff88003af370b8 EFLAGS: 00010012
RAX: 0000000000010000 RBX: 0000000000000002 RCX: ffffc900011c8000
RDX: 0000000000000a33 RSI: ffffffff8360f489 RDI: ffff88006b3f02e0
RBP: ffff88003af371d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: ffffed000d67e050 R12: 0000000000000000
R13: ffff88006b3f246c R14: ffff88006b3f0248 R15: ffff88006b3f00c0
 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:1680
 scsi_request_fn+0x114d/0x1dd0 drivers/scsi/scsi_lib.c:1815
 __blk_run_queue_uncond block/blk-core.c:376 [inline]
 __blk_run_queue+0x1a6/0x370 block/blk-core.c:396
 blk_execute_rq_nowait+0x200/0x310 block/blk-exec.c:78
 sg_common_write.isra.17+0xbf8/0x1cb0 drivers/scsi/sg.c:806
 sg_write+0x7a6/0xca0 drivers/scsi/sg.c:677
 __vfs_write+0xef/0x970 fs/read_write.c:468
 vfs_write+0x18f/0x510 fs/read_write.c:518
 SYSC_write fs/read_write.c:565 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:557
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x446749
RSP: 002b:00007f6e68a7dc08 EFLAGS: 00000292 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 0000000000446749
RDX: 000000000000002a RSI: 000000002065a000 RDI: 0000000000000016
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 00000000ffffffff
R13: 00000000000057e0 R14: 00000000006e78a0 R15: 0000000000000080
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..