EXT4-fs (sda1): re-mounted. Opts: dioread_nolock,nolazytime,
WARNING: CPU: 1 PID: 14641 at fs/ext4/page-io.c:206 ext4_add_complete_io fs/ext4/page-io.c:206 [inline]
WARNING: CPU: 1 PID: 14641 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: 14641 Comm: syz-executor4 Not tainted 4.19.0-rc5-next-20180924+ #78
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
kobject: 'loop5' (00000000777618c4): kobject_uevent_env
 panic+0x238/0x4e7 kernel/panic.c:184
kobject: 'loop5' (00000000777618c4): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __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 94 ab 5c ff <0f> 0b e9 cc fd ff ff e8 58 2e a0 ff e9 81 fc ff ff 48 89 b5 30 ff
RSP: 0000:ffff8801dad070f8 EFLAGS: 00010006
RAX: ffff880190dee500 RBX: ffff8801b6cdc8a0 RCX: ffffffff8220ab07
RDX: 0000000000010000 RSI: ffffffff8220ae2c RDI: ffff8801c943aea0
RBP: ffff8801dad071e8 R08: ffff880190dee500 R09: ffffed0036d9b919
R10: ffffed0036d9b919 R11: ffff8801b6cdc8cf R12: 1ffff1003b5a0e24
R13: ffff88018047e870 R14: ffff8801dad071c0 R15: ffff8801c943abc0
 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:277 [inline]
 blk_update_request+0x3b8/0xcb0 block/blk-core.c:3102
 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:583 [inline]
 blk_mq_complete_request+0x3ba/0x680 block/blk-mq.c:620
 scsi_mq_done+0x108/0x460 drivers/scsi/scsi_lib.c:2048
 virtscsi_complete_cmd+0x6b6/0x920 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+0x139/0x200 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:clear_page_erms+0x7/0x10 arch/x86/lib/clear_page_64.S:47
Code: 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 <f3> aa c3 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0000:ffff88019b9af7a8 EFLAGS: 00010246 ORIG_RAX: ffffffffffffffdb
RAX: 0000000000000000 RBX: ffff880000000000 RCX: 0000000000000a40
RDX: 1ffff100321bdf05 RSI: ffffffff81b00216 RDI: ffff8801829785c0
RBP: ffff88019b9af7c0 R08: ffff880190dee500 R09: 0000000000000000
R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff880190dee500
R13: ffffea00060a0000 R14: 0000000000000000 R15: 0000000000000000
 process_huge_page mm/memory.c:4360 [inline]
 clear_huge_page+0xb0/0x490 mm/memory.c:4420
 __do_huge_pmd_anonymous_page mm/huge_memory.c:567 [inline]
 do_huge_pmd_anonymous_page+0x854/0x17e0 mm/huge_memory.c:725
 create_huge_pmd mm/memory.c:3625 [inline]
 __handle_mm_fault+0x3880/0x53e0 mm/memory.c:3829
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3895
 __do_page_fault+0x567/0xd10 arch/x86/mm/fault.c:1346
 do_page_fault+0xed/0x7d1 arch/x86/mm/fault.c:1421
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x400581
Code: 08 f7 d2 23 11 8a 4c 24 10 d3 e0 09 d0 89 06 e9 ab 00 00 00 48 8b 44 24 10 48 0b 44 24 28 75 12 48 8b 44 24 08 48 8b 54 24 20 <48> 89 10 e9 8d 00 00 00 8a 4c 24 28 b8 01 00 00 00 48 8b 7c 24 08
RSP: 002b:00007fff43dc6ab0 EFLAGS: 00010246
RAX: 00000000200000c0 RBX: fffffffffffffffe RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001da7848
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000056a1f R14: 0000000000000002 R15: badc0ffeebadface
Kernel Offset: disabled
Rebooting in 86400 seconds..