linux 4.13.0-11.12 ADT test failure with linux 4.13.0-11.12

[Seth Forshee]

Testing failed on:
    i386: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful/artful/i386/l/linux/20170914_153408_2e966@/log.gz

[Seth Forshee (sforshee)]

memory-hotplug kselftest is failing. A bug in the test means it wasn't actually doing anything before, so possibly this doesn't represent an actual regression vs. previous artful kernels. However the test does pass in xenial so it warrants investigation.

[Seth Forshee (sforshee)]

Reproduced in a VM.

[ 48.361847] BUG: unable to handle kernel paging request at dffff000
[ 48.362522] IP: wp_page_copy+0xa5/0x650
[ 48.362899] *pdpt = 0000000015d85001 *pde = 0000000015f0d067
[ 48.362900] *pte = 0000000000000000
[ 48.363458]
[ 48.363974] Oops: 0002 [#1] SMP
[ 48.364285] Modules linked in: ppdev input_leds i2c_piix4 joydev serio_raw mac_hid parport_pc parport qemu_fw_cfg ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear psmouse virtio_blk virtio_net floppy pata_acpi
[ 48.367731] CPU: 0 PID: 372 Comm: systemd-udevd Tainted: G W 4.13.0-10-generic #11-Ubuntu
[ 48.368608] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
[ 48.369503] task: d3dc57c0 task.stack: d392c000
[ 48.369966] EIP: wp_page_copy+0xa5/0x650
[ 48.370361] EFLAGS: 00010282 CPU: 0
[ 48.370714] EAX: dffff000 EBX: d11a4000 ECX: dffff000 EDX: bf991ff0
[ 48.371295] ESI: d11a4000 EDI: dffff004 EBP: d392dea0 ESP: d392de64
[ 48.371890] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 48.372573] CR0: 80050033 CR2: dffff000 CR3: 1ed26e60 CR4: 000006f0
[ 48.375056] Call Trace:
[ 48.376155] do_wp_page+0x83/0x4f0
[ 48.377090] ? kmap_atomic_prot+0x3c/0x100
[ 48.377632] handle_mm_fault+0x94b/0xe70
[ 48.377965] __do_page_fault+0x209/0x500
[ 48.378290] ? kvm_async_pf_task_wake+0x100/0x100
[ 48.378679] trace_do_page_fault+0x3f/0xe0
[ 48.379048] ? kvm_async_pf_task_wake+0x100/0x100
[ 48.379424] do_async_page_fault+0x55/0x70
[ 48.379764] common_exception+0x6c/0x72
[ 48.380070] EIP: 0xb7e1c76a
[ 48.380296] EFLAGS: 00010286 CPU: 0
[ 48.380574] EAX: bf9927f0 EBX: 01200011 ECX: 00000000 EDX: 00000000
[ 48.381066] ESI: 00000000 EDI: 000003ad EBP: bf992838 ESP: bf9927f0
[ 48.381558] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 48.381985] Code: 00 00 8b 4d e8 85 c9 0f 84 11 05 00 00 8b 45 e8 e8 61 80 ea ff 89 c3 8b 45 e0 89 de e8 55 80 ea ff 8b 13 8d 78 04 89 c1 83 e7 fc <89> 10 8b 93 fc 0f 00 00 29 f9 29 ce 81 c1 00 10 00 00 c1 e9 02
[ 48.383453] EIP: wp_page_copy+0xa5/0x650 SS:ESP: 0068:d392de64
[ 48.383921] CR2: 00000000dffff000
[ 48.384188] ---[ end trace a95cd1e3637ee3ef ]---
[ 48.385163] BUG: unable to handle kernel paging request at dfffeaed
[ 48.385680] IP: ext4_block_write_begin+0x435/0x470
[ 48.386062] *pdpt = 0000000015d85001 *pde = 0000000015f0d067
[ 48.386063] *pte = 0000000000000000
[ 48.386516]
[ 48.386930] Oops: 0002 [#2] SMP
[ 48.387185] Modules linked in: ppdev input_leds i2c_piix4 joydev serio_raw mac_hid parport_pc parport qemu_fw_cfg ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear psmouse virtio_blk virtio_net floppy pata_acpi
[ 48.390027] CPU: 0 PID: 525 Comm: rs:main Q:Reg Tainted: G D W 4.13.0-10-generic #11-Ubuntu...

[Seth Forshee (sforshee)]

Bisected to f1dd2cd13c4b "mm, memory_hotplug: do not associate hotadded memory to zones until online." Reported upstream.