FAT-fs (loop3): Can't find a valid FAT filesystem libceph: connect [d::]:6789 error -113 libceph: mon0 [d::]:6789 connect error FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem WARNING: CPU: 1 PID: 15079 at fs/ext4/page-io.c:206 ext4_add_complete_io fs/ext4/page-io.c:206 [inline] WARNING: CPU: 1 PID: 15079 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: 15079 Comm: syz-executor4 Not tainted 4.19.0-rc6-next-20181004+ #87 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __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 b4 49 5c ff <0f> 0b e9 cc fd ff ff e8 b8 3b a0 ff e9 81 fc ff ff 48 89 b5 30 ff RSP: 0018:ffff8801daf07108 EFLAGS: 00010006 RAX: ffff88017f8f8640 RBX: ffff88017d2302a0 RCX: ffffffff82212e37 RDX: 0000000000010000 RSI: ffffffff8221315c RDI: ffff8801c941ce60 RBP: ffff8801daf071f8 R08: ffff88017f8f8640 R09: ffffed002fa46059 R10: ffffed002fa46059 R11: ffff88017d2302cf R12: 1ffff1003b5e0e26 R13: ffff88017b1662f0 R14: ffff8801daf071d0 R15: ffff8801c941cb80 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 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:mod_lruvec_page_state include/linux/memcontrol.h:710 [inline] RIP: 0010:inc_lruvec_page_state include/linux/memcontrol.h:1206 [inline] RIP: 0010:__test_set_page_writeback+0x1271/0x1f30 mm/page-writeback.c:2790 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d4 0b 00 00 48 83 3d 3f eb 90 07 00 0f 84 4f 06 00 00 e8 54 72 dc ff 4c 89 e7 57 9d <0f> 1f 44 00 00 e9 48 ff ff ff e8 40 72 dc ff 4d 8d af 48 3c 00 00 RSP: 0018:ffff880183ede960 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdb RAX: 0000000000040000 RBX: ffffea000697aa80 RCX: ffffc90009eca000 RDX: 0000000000040000 RSI: ffffffff81a108bc RDI: 0000000000000246 RBP: ffff880183eded08 R08: ffff88017f8f8640 R09: ffffed002f62cc9f R10: ffffed002f62cc9f R11: ffff88017b1664fb R12: 0000000000000246 R13: 0000000000000200 R14: 0000000000000000 R15: ffffffffffffffe8 set_page_writeback include/linux/page-flags.h:509 [inline] ext4_bio_write_page+0x505/0x1d3b fs/ext4/page-io.c:432 mpage_submit_page+0x15e/0x270 fs/ext4/inode.c:2207 mpage_map_and_submit_buffers+0x55e/0xa40 fs/ext4/inode.c:2404 mpage_map_and_submit_extent fs/ext4/inode.c:2542 [inline] ext4_writepages+0x2704/0x4170 fs/ext4/inode.c:2854 do_writepages+0x9a/0x1a0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x364/0x4a0 mm/filemap.c:411 file_write_and_wait_range+0x98/0x100 mm/filemap.c:730 ext4_sync_file+0x2ef/0x1500 fs/ext4/fsync.c:128 vfs_fsync_range+0x140/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2776 [inline] ext4_file_write_iter+0x692/0x1420 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1844 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 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:00007f1f27d19c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 000000002001007f RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1f27d1a6d4 R13: 00000000004c5574 R14: 00000000004d8e98 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..