WARNING: CPU: 1 PID: 12110 at fs/ext4/page-io.c:206 ext4_add_complete_io fs/ext4/page-io.c:206 [inline]
WARNING: CPU: 1 PID: 12110 at fs/ext4/page-io.c:206 ext4_put_io_end_defer+0x43c/0x560 fs/ext4/page-io.c:269
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 12110 Comm: syz-executor1 Not tainted 4.19.0-rc5-next-20180928+ #84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d3/0x2c4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:ext4_add_complete_io fs/ext4/page-io.c:206 [inline]
RIP: 0010:ext4_put_io_end_defer+0x43c/0x560 fs/ext4/page-io.c:269
Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2a 01 00 00 49 83 bf e0 02 00 00 00 0f 84 d8 fd ff ff e8 64 96 5c ff <0f> 0b e9 cc fd ff ff e8 c8 4a a0 ff e9 81 fc ff ff 48 89 b5 30 ff
RSP: 0018:ffff8801daf07108 EFLAGS: 00010006
RAX: ffff8801bf478280 RBX: ffff88017af24a20 RCX: ffffffff8220cec7
RDX: 0000000000010000 RSI: ffffffff8220d1ec RDI: ffff8801c9fdce60
RBP: ffff8801daf071f8 R08: ffff8801bf478280 R09: ffffed002f5e4949
R10: ffffed002f5e4949 R11: ffff88017af24a4f R12: 1ffff1003b5e0e26
R13: ffff8801b8c495f0 R14: ffff8801daf071d0 R15: ffff8801c9fdcb80
 ext4_end_bio+0x243/0x6e0 fs/ext4/page-io.c:335
 bio_endio+0x5ca/0xb60 block/bio.c:1775
 req_bio_endio block/blk-core.c:278 [inline]
 blk_update_request+0x3b8/0xcb0 block/blk-core.c:3075
 scsi_end_request+0xde/0x860 drivers/scsi/scsi_lib.c:673
 scsi_io_completion+0x2ce/0x1ca0 drivers/scsi/scsi_lib.c:1093
 scsi_finish_command+0x579/0x970 drivers/scsi/scsi.c:248
 scsi_softirq_done+0x465/0x520 drivers/scsi/scsi_lib.c:1737
 __blk_mq_complete_request block/blk-mq.c:586 [inline]
 blk_mq_complete_request+0x2c2/0x550 block/blk-mq.c:623
 scsi_mq_done+0x108/0x460 drivers/scsi/scsi_lib.c:2048
 virtscsi_complete_cmd+0x573/0x740 drivers/scsi/virtio_scsi.c:207
 virtscsi_vq_done+0xcb/0x180 drivers/scsi/virtio_scsi.c:223
 virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:238
 vring_interrupt+0x128/0x170 drivers/virtio/virtio_ring.c:950
 __handle_irq_event_percpu+0x1e1/0xaf0 kernel/irq/handle.c:149
 handle_irq_event_percpu+0xa0/0x1d0 kernel/irq/handle.c:189
 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206
 handle_edge_irq+0x227/0x880 kernel/irq/chip.c:791
 generic_handle_irq_desc include/linux/irqdesc.h:154 [inline]
 handle_irq+0x252/0x3d8 arch/x86/kernel/irq_64.c:78
 do_IRQ+0x98/0x1c0 arch/x86/kernel/irq.c:246
 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:582
 </IRQ>
RIP: 0010:arch_atomic_dec_and_test arch/x86/include/asm/atomic.h:125 [inline]
RIP: 0010:atomic_dec_and_test include/asm-generic/atomic-instrumented.h:260 [inline]
RIP: 0010:page_ref_dec_and_test include/linux/page_ref.h:139 [inline]
RIP: 0010:put_page_testzero include/linux/mm.h:520 [inline]
RIP: 0010:release_pages+0x48b/0x26a0 mm/swap.c:751
Code: 89 ee 42 c6 04 38 f8 e8 43 93 da ff 45 85 ed 0f 84 76 0f 00 00 e8 25 92 da ff be 04 00 00 00 48 89 df e8 e8 35 1e 00 f0 ff 0b <0f> 94 c3 31 ff 89 de e8 d9 92 da ff 84 db 0f 84 01 05 00 00 e8 fc
RSP: 0018:ffff88018061e260 EFLAGS: 00000206 ORIG_RAX: ffffffffffffffdb
RAX: fffff94000e1faa7 RBX: ffffea00070fd534 RCX: ffffffff81a2d638
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00070fd534
RBP: ffff88018061ea18 R08: fffff94000e1faa7 R09: fffff94000e1faa6
R10: fffff94000e1faa6 R11: ffffea00070fd537 R12: ffffea00070fd500
R13: 0000000000000007 R14: ffff88018061e9f0 R15: dffffc0000000000
 free_pages_and_swap_cache+0x475/0x6f0 mm/swap_state.c:319
 tlb_flush_mmu_free+0xff/0x1b0 mm/mmu_gather.c:74
 zap_pte_range mm/memory.c:1158 [inline]
 zap_pmd_range mm/memory.c:1193 [inline]
 zap_pud_range mm/memory.c:1222 [inline]
 zap_p4d_range mm/memory.c:1243 [inline]
 unmap_page_range+0x1c43/0x2510 mm/memory.c:1264
 unmap_single_vma+0x19b/0x310 mm/memory.c:1309
 unmap_vmas+0x125/0x200 mm/memory.c:1339
 exit_mmap+0x2be/0x590 mm/mmap.c:3121
 __mmput kernel/fork.c:1045 [inline]
 mmput+0x247/0x610 kernel/fork.c:1066
 exit_mm kernel/exit.c:545 [inline]
 do_exit+0xe6f/0x2610 kernel/exit.c:854
 do_group_exit+0x177/0x440 kernel/exit.c:970
 get_signal+0x8a8/0x1970 kernel/signal.c:2517
 do_signal+0x9c/0x21e0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457579
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f152717bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: fffffffffffffff8 RBX: 0000000000000003 RCX: 0000000000457579
RDX: 0000000020000140 RSI: 0000000020000140 RDI: 0000000020000200
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f152717c6d4
R13: 00000000004bdbe8 R14: 00000000004cc7d8 R15: 00000000ffffffff
Shutting down cpus with NMI
Kernel Offset: disabled
Rebooting in 86400 seconds..