Issue has recurred on 4.14.0-041400rc1-generic.

I have not worked out how to generate the problem reliably. Between 0700 this morning and 2000, syslog is 2.8G and kern.log is also 2.8G

Log events are:

Sep 18 21:31:15 muddlehead kernel: [70317.777977] ------------[ cut here ]------------
Sep 18 21:31:15 muddlehead kernel: [70317.777982] WARNING: CPU: 1 PID: 0 at /home/kernel/COD/linux/drivers/mtd/nand/r852.c:746 r852_irq+0x180/0x1d0 [r852]
Sep 18 21:31:15 muddlehead kernel: [70317.777983] Modules linked in: mmc_block nls_iso8859_1 binfmt_misc coretemp joydev input_leds wmi_bmof serio_raw snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 snd_hda_intel snd_hda_codec snd_hda_core snd_seq_midi snd_seq_midi_event iwl3945 snd_usb_audio snd_usbmidi_lib snd_hwdep snd_rawmidi iwlegacy r852 sm_common snd_pcm nand nand_ecc snd_seq nand_bch uvcvideo usblp bch mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core mtd snd_seq_device r592 memstick videodev cfg80211 snd_timer media lpc_ich snd mac_hid soundcore shpchp parport_pc ppdev lp parport autofs4 crypto_simd glue_helper cryptd aes_x86_64 algif_skcipher af_alg dm_crypt nilfs2 uas usb_storage hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops
Sep 18 21:31:15 muddlehead kernel: [70317.778043]  tg3 ahci libahci pata_acpi drm psmouse ptp sdhci_pci firewire_ohci sdhci firewire_core crc_itu_t pps_core wmi video
Sep 18 21:31:15 muddlehead kernel: [70317.778057] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G        W       4.14.0-041400rc1-generic #201709162031
Sep 18 21:31:15 muddlehead kernel: [70317.778059] Hardware name: LENOVO 0769BMG/IEL10, BIOS 68ET24WW 08/15/2007
Sep 18 21:31:15 muddlehead kernel: [70317.778060] task: ffff9cb17a4015c0 task.stack: ffffb2ab40694000
Sep 18 21:31:15 muddlehead kernel: [70317.778064] RIP: 0010:r852_irq+0x180/0x1d0 [r852]
Sep 18 21:31:15 muddlehead kernel: [70317.778065] RSP: 0018:ffff9cb17fd03eb8 EFLAGS: 00010002
Sep 18 21:31:15 muddlehead kernel: [70317.778068] RAX: ffffb2ab406d1000 RBX: ffff9cb175902b00 RCX: 0000000000000086
Sep 18 21:31:15 muddlehead kernel: [70317.778070] RDX: 0000000000000001 RSI: ffff9cb175902b00 RDI: 0000000000000001
Sep 18 21:31:15 muddlehead kernel: [70317.778072] RBP: ffff9cb17fd03ed8 R08: 0000000000000000 R09: 000000000000c020
Sep 18 21:31:15 muddlehead kernel: [70317.778073] R10: ffff9cb17fd03f28 R11: 0000000000000484 R12: 0000000000000001
Sep 18 21:31:15 muddlehead kernel: [70317.778075] R13: ffff9cb175902be4 R14: 0000000000000082 R15: ffff9cb170f86580
Sep 18 21:31:15 muddlehead kernel: [70317.778077] FS:  0000000000000000(0000) GS:ffff9cb17fd00000(0000) knlGS:0000000000000000
Sep 18 21:31:15 muddlehead kernel: [70317.778079] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 18 21:31:15 muddlehead kernel: [70317.778081] CR2: 00007fe1eca5d019 CR3: 0000000137339000 CR4: 00000000000006e0
Sep 18 21:31:15 muddlehead kernel: [70317.778083] Call Trace:
Sep 18 21:31:15 muddlehead kernel: [70317.778084]  <IRQ>
Sep 18 21:31:15 muddlehead kernel: [70317.778088]  __handle_irq_event_percpu+0x3f/0x190
Sep 18 21:31:15 muddlehead kernel: [70317.778091]  handle_irq_event_percpu+0x32/0x80
Sep 18 21:31:15 muddlehead kernel: [70317.778093]  handle_irq_event+0x3b/0x60
Sep 18 21:31:15 muddlehead kernel: [70317.778096]  handle_fasteoi_irq+0x75/0x120
Sep 18 21:31:15 muddlehead kernel: [70317.778099]  handle_irq+0x1a/0x30
Sep 18 21:31:15 muddlehead kernel: [70317.778102]  do_IRQ+0x46/0xd0
Sep 18 21:31:15 muddlehead kernel: [70317.778104]  common_interrupt+0x93/0x93
Sep 18 21:31:15 muddlehead kernel: [70317.778106]  </IRQ>
Sep 18 21:31:15 muddlehead kernel: [70317.778109] RIP: 0010:cpuidle_enter_state+0x12d/0x2d0
Sep 18 21:31:15 muddlehead kernel: [70317.778110] RSP: 0018:ffffb2ab40697e58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff8d
Sep 18 21:31:15 muddlehead kernel: [70317.778113] RAX: ffff9cb17fd1c200 RBX: 00003ff4222d12ef RCX: 00003ff4222d1265
Sep 18 21:31:15 muddlehead kernel: [70317.778115] RDX: 00003ff4222d12ef RSI: 00003ff4222d12ef RDI: 0000000000000000
Sep 18 21:31:15 muddlehead kernel: [70317.778117] RBP: ffffb2ab40697e98 R08: ffffffffa4c05040 R09: 0000000000000002
Sep 18 21:31:15 muddlehead kernel: [70317.778119] R10: ffffb2ab40697e00 R11: 0000000000000484 R12: ffff9cb171edc000
Sep 18 21:31:15 muddlehead kernel: [70317.778120] R13: 0000000000000000 R14: 0000000000000003 R15: ffffffffa4d84678
Sep 18 21:31:15 muddlehead kernel: [70317.778124]  ? cpuidle_enter_state+0x120/0x2d0
Sep 18 21:31:15 muddlehead kernel: [70317.778127]  cpuidle_enter+0x17/0x20
Sep 18 21:31:15 muddlehead kernel: [70317.778130]  call_cpuidle+0x23/0x40
Sep 18 21:31:15 muddlehead kernel: [70317.778132]  do_idle+0x19a/0x200
Sep 18 21:31:15 muddlehead kernel: [70317.778135]  cpu_startup_entry+0x73/0x80
Sep 18 21:31:15 muddlehead kernel: [70317.778138]  start_secondary+0x175/0x1b0
Sep 18 21:31:15 muddlehead kernel: [70317.778141]  secondary_startup_64+0xa5/0xa5
Sep 18 21:31:15 muddlehead kernel: [70317.778143] Code: 85 12 ff ff ff 31 f6 e9 54 ff ff ff 8b 15 49 28 00 00 85 d2 0f 84 79 ff ff ff 48 c7 c7 78 f1 73 c0 e8 76 32 7a e3 e9 50 ff ff ff <0f> ff e9 cf fe ff ff 83 fa 01 75 c0 eb ac 44 89 e6 48 c7 c7 a0 
Sep 18 21:31:15 muddlehead kernel: [70317.778196] ---[ end trace 718877d9ea3a4148 ]---
Sep 18 21:31:15 muddlehead kernel: [70317.860178] r852: detected SmartMedia readonly card in slot
Sep 18 21:31:16 muddlehead kernel: [70318.572017] nand: timeout while waiting for chip to become ready
Sep 18 21:31:16 muddlehead kernel: [70318.572043] nand: No NAND device found
Sep 18 21:31:17 muddlehead kernel: [70319.772914] ------------[ cut here ]------------