-- Logs begin at Thu 2015-07-02 02:19:07 CDT, end at Wed 2015-09-23 19:14:53 CDT. --
Sep 23 18:44:12 sv kernel: BUG: unable to handle kernel NULL pointer dereference at           (null)
Sep 23 18:44:12 sv kernel: IP: [<ffffffffa07d8b91>] get_free_stripe+0x31/0xf0 [raid456]
Sep 23 18:44:12 sv kernel: PGD 0 
Sep 23 18:44:12 sv kernel: Oops: 0000 [#1] PREEMPT SMP 
Sep 23 18:44:12 sv kernel: Modules linked in: vhost_net vhost macvtap macvlan ecb ecryptfs cbc sha256_ssse3 sha256_generic encrypted_keys mcryptd sha1_ssse3 sha1_generic hmac trusted tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter exfat(O) bridge stp llc it87 hwmon_vid raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx amdkfd kvm_amd md_mod amd_iommu_v2 ppdev kvm radeon evdev crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek mac_hid snd_hda_codec_generic snd_hda_codec_hdmi ghash_clmulni_intel snd_hda_intel aesni_intel aes_x86_64 ttm lrw gf128mul glue_helper ablk_helper snd_hda_controller cryptd snd_hda_codec drm_kms_helper psmouse i2c_piix4 serio_raw k10temp pcspkr snd_hda_core snd_hwdep tpm_infineon tpm_tis r8169 snd_pcm drm parport_pc mii tpm snd_timer i2c_algo_bit i2c_core
Sep 23 18:44:12 sv kernel:  snd parport acpi_cpufreq shpchp soundcore button processor sch_fq_codel nfs lockd grace sunrpc fscache sg ip_tables x_tables btrfs xor sr_mod cdrom raid6_pq sd_mod atkbd libps2 crc32c_intel ohci_pci xhci_pci xhci_hcd ohci_hcd ehci_pci ahci ehci_hcd libahci libata usbcore usb_common scsi_mod i8042 serio
Sep 23 18:44:12 sv kernel: CPU: 2 PID: 13851 Comm: qemu-system-x86 Tainted: G           O    4.1.6-1-ARCH #1
Sep 23 18:44:12 sv kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./F2A75M-D3H, BIOS F6e 12/15/2013
Sep 23 18:44:12 sv kernel: task: ffff8800ad0f28c0 ti: ffff8800627ac000 task.ti: ffff8800627ac000
Sep 23 18:44:12 sv kernel: RIP: 0010:[<ffffffffa07d8b91>]  [<ffffffffa07d8b91>] get_free_stripe+0x31/0xf0 [raid456]
Sep 23 18:44:12 sv kernel: RSP: 0018:ffff8800627af518  EFLAGS: 00010082
Sep 23 18:44:12 sv kernel: RAX: fffffffffffffff0 RBX: 0000000000000000 RCX: 00000000000000ff
Sep 23 18:44:12 sv kernel: RDX: 0000000180130001 RSI: 00000000ffffffff RDI: ffff8801379f4c00
Sep 23 18:44:12 sv kernel: RBP: ffff8800627af548 R08: 0000000000000000 R09: ffff88013795a300
Sep 23 18:44:12 sv kernel: R10: ffffea00029c7c00 R11: 0000000000019d48 R12: ffff8801379f4c00
Sep 23 18:44:12 sv kernel: R13: ffff8801379f4c06 R14: ffff8801379f4d68 R15: 0000000000000080
Sep 23 18:44:12 sv kernel: FS:  00007f3f727fc700(0000) GS:ffff88013ed00000(0000) knlGS:0000000000000000
Sep 23 18:44:12 sv kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Sep 23 18:44:12 sv kernel: CR2: 0000000000000000 CR3: 000000005f052000 CR4: 00000000000406e0
Sep 23 18:44:12 sv kernel: Stack:
Sep 23 18:44:12 sv kernel:  ffff8800627af548 00000000ffffffff ffff8801379f4c00 ffff8801379f4c06
Sep 23 18:44:12 sv kernel:  0000000000000300 0000000000000080 ffff8800627af578 ffffffffa07dd784
Sep 23 18:44:12 sv kernel:  ffff8800627af578 000000000000001f ffff8800627af640 ffff8801379f4c00
Sep 23 18:44:12 sv kernel: Call Trace:
Sep 23 18:44:12 sv kernel:  [<ffffffffa07dd784>] drop_one_stripe+0x44/0xb0 [raid456]
Sep 23 18:44:12 sv kernel:  [<ffffffffa07dd835>] raid5_cache_scan+0x45/0x60 [raid456]
Sep 23 18:44:12 sv kernel:  [<ffffffff81179299>] shrink_slab+0x229/0x440
Sep 23 18:44:12 sv kernel:  [<ffffffff8117cbca>] shrink_zone+0x2ca/0x2e0
Sep 23 18:44:12 sv kernel:  [<ffffffff8117cd53>] do_try_to_free_pages+0x173/0x410
Sep 23 18:44:12 sv kernel:  [<ffffffff8117d097>] try_to_free_pages+0xa7/0x1a0
Sep 23 18:44:12 sv kernel:  [<ffffffff8116fcbf>] __alloc_pages_nodemask+0x5ff/0x9e0
Sep 23 18:44:12 sv kernel:  [<ffffffff811b88c3>] alloc_pages_vma+0x1f3/0x270
Sep 23 18:44:12 sv kernel:  [<ffffffff811ce7a2>] do_huge_pmd_anonymous_page+0x132/0x4a0
Sep 23 18:44:12 sv kernel:  [<ffffffff81197af8>] handle_mm_fault+0x298/0x18c0
Sep 23 18:44:12 sv kernel:  [<ffffffff810b0740>] ? update_cfs_shares+0xc0/0x120
Sep 23 18:44:12 sv kernel:  [<ffffffff810b052d>] ? update_curr+0x7d/0x1b0
Sep 23 18:44:12 sv kernel:  [<ffffffff810aba81>] ? set_next_entity+0xb1/0x470
Sep 23 18:44:12 sv kernel:  [<ffffffff81066bd2>] __do_page_fault+0x172/0x4b0
Sep 23 18:44:12 sv kernel:  [<ffffffff8101477c>] ? __switch_to+0x2bc/0x5e0
Sep 23 18:44:12 sv kernel:  [<ffffffff81066f32>] do_page_fault+0x22/0x30
Sep 23 18:44:12 sv kernel:  [<ffffffff8158df28>] page_fault+0x28/0x30
Sep 23 18:44:12 sv kernel:  [<ffffffff812ddb85>] ? copy_page_to_iter+0xc5/0x360
Sep 23 18:44:12 sv kernel:  [<ffffffff811666ac>] ? pagecache_get_page+0x2c/0x1f0
Sep 23 18:44:12 sv kernel:  [<ffffffff81167909>] generic_file_read_iter+0x2a9/0x600
Sep 23 18:44:12 sv kernel:  [<ffffffff811e0b18>] do_iter_readv_writev+0x68/0xa0
Sep 23 18:44:12 sv kernel:  [<ffffffff811e1326>] do_readv_writev+0x1a6/0x260
Sep 23 18:44:12 sv kernel:  [<ffffffff811e1416>] vfs_readv+0x36/0x50
Sep 23 18:44:12 sv kernel:  [<ffffffff811e23ca>] SyS_preadv+0xca/0xf0
Sep 23 18:44:12 sv kernel:  [<ffffffff8158bfae>] system_call_fastpath+0x12/0x71
Sep 23 18:44:12 sv kernel: Code: 48 63 c6 48 c1 e0 04 48 89 e5 41 57 41 56 4c 8d b4 07 78 01 00 00 41 55 41 54 53 48 83 ec 08 49 8b 1e 49 39 de 0f 84 b7 00 00 00 <48> 8b 13 48 8b 43 08 41 89 f5 49 89 fc 4c 8d 7b f0 48 89 42 08 
Sep 23 18:44:12 sv kernel: RIP  [<ffffffffa07d8b91>] get_free_stripe+0x31/0xf0 [raid456]
Sep 23 18:44:12 sv kernel:  RSP <ffff8800627af518>
Sep 23 18:44:12 sv kernel: CR2: 0000000000000000
Sep 23 18:44:12 sv kernel: ---[ end trace b871560623f865e6 ]---
Sep 23 18:44:12 sv kernel: note: qemu-system-x86[13851] exited with preempt_count 1
Sep 23 18:44:16 sv kernel: general protection fault: 0000 [#2] PREEMPT SMP 
Sep 23 18:44:16 sv kernel: Modules linked in: vhost_net vhost macvtap macvlan ecb ecryptfs cbc sha256_ssse3 sha256_generic encrypted_keys mcryptd sha1_ssse3 sha1_generic hmac trusted tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter exfat(O) bridge stp llc it87 hwmon_vid raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx amdkfd kvm_amd md_mod amd_iommu_v2 ppdev kvm radeon evdev crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek mac_hid snd_hda_codec_generic snd_hda_codec_hdmi ghash_clmulni_intel snd_hda_intel aesni_intel aes_x86_64 ttm lrw gf128mul glue_helper ablk_helper snd_hda_controller cryptd snd_hda_codec drm_kms_helper psmouse i2c_piix4 serio_raw k10temp pcspkr snd_hda_core snd_hwdep tpm_infineon tpm_tis r8169 snd_pcm drm parport_pc mii tpm snd_timer i2c_algo_bit i2c_core
Sep 23 18:44:16 sv kernel:  snd parport acpi_cpufreq shpchp soundcore button processor sch_fq_codel nfs lockd grace sunrpc fscache sg ip_tables x_tables btrfs xor sr_mod cdrom raid6_pq sd_mod atkbd libps2 crc32c_intel ohci_pci xhci_pci xhci_hcd ohci_hcd ehci_pci ahci ehci_hcd libahci libata usbcore usb_common scsi_mod i8042 serio
Sep 23 18:44:16 sv kernel: CPU: 1 PID: 552 Comm: btrfs-transacti Tainted: G      D    O    4.1.6-1-ARCH #1
Sep 23 18:44:16 sv kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./F2A75M-D3H, BIOS F6e 12/15/2013
Sep 23 18:44:16 sv kernel: task: ffff8800a62328c0 ti: ffff8800a3450000 task.ti: ffff8800a3450000
Sep 23 18:44:16 sv kernel: RIP: 0010:[<ffffffffa07dcfb0>]  [<ffffffffa07dcfb0>] __find_stripe+0x30/0xc0 [raid456]
Sep 23 18:44:16 sv kernel: RSP: 0018:ffff8800a34533d8  EFLAGS: 00010006
Sep 23 18:44:16 sv kernel: RAX: 00ff880037770000 RBX: 0000000000000000 RCX: ffff8800a3453470
Sep 23 18:44:16 sv kernel: RDX: 0000000000000bc0 RSI: 00000000e46b0bc0 RDI: ffff8801379f4c00
Sep 23 18:44:16 sv kernel: RBP: ffff8800a34533f8 R08: 0000000000000000 R09: 0000000000000002
Sep 23 18:44:16 sv kernel: R10: 0000000000000400 R11: 0000000000000001 R12: 00000000e46b0bc0
Sep 23 18:44:16 sv kernel: R13: ffff8801379f4c00 R14: ffff8801379f4e08 R15: 0000000000000000
Sep 23 18:44:16 sv kernel: FS:  00007f3ff95ff700(0000) GS:ffff88013ec80000(0000) knlGS:0000000000000000
Sep 23 18:44:16 sv kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Sep 23 18:44:16 sv kernel: CR2: 00007ff4b773e000 CR3: 000000005f052000 CR4: 00000000000406e0
Sep 23 18:44:16 sv kernel: Stack:
Sep 23 18:44:16 sv kernel:  ffff880139f9f598 ffff8801379f4c00 00000000e46b0bc0 ffff8801379f4c08
Sep 23 18:44:16 sv kernel:  ffff8800a34534b8 ffffffffa07e2802 0000000000000001 0000000000000246
Sep 23 18:44:16 sv kernel:  ffff8800a3453458 0000000000000283 ffff880000000000 00000000810bc249
Sep 23 18:44:16 sv kernel: Call Trace:
Sep 23 18:44:16 sv kernel:  [<ffffffffa07e2802>] get_active_stripe+0x132/0x730 [raid456]
Sep 23 18:44:16 sv kernel:  [<ffffffffa0530e0a>] ? md_write_start+0xda/0x1c0 [md_mod]
Sep 23 18:44:16 sv kernel:  [<ffffffffa07e6ec0>] make_request+0x1b0/0xd10 [raid456]
Sep 23 18:44:16 sv kernel:  [<ffffffff810bc720>] ? wake_atomic_t_function+0x60/0x60
Sep 23 18:44:16 sv kernel:  [<ffffffffa052d713>] md_make_request+0x103/0x260 [md_mod]
Sep 23 18:44:16 sv kernel:  [<ffffffff8129bd00>] generic_make_request+0xe0/0x130
Sep 23 18:44:16 sv kernel:  [<ffffffff8129bdc8>] submit_bio+0x78/0x180
Sep 23 18:44:16 sv kernel:  [<ffffffffa02e0dc3>] submit_stripe_bio+0x63/0x90 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02e6e36>] btrfs_map_bio+0x2f6/0x520 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02bb29d>] btrfs_submit_bio_hook+0xed/0x1d0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffff81292cde>] ? __bio_add_page.part.2+0x10e/0x270
Sep 23 18:44:16 sv kernel:  [<ffffffffa02d57d8>] submit_one_bio+0x68/0xa0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02da2e7>] submit_extent_page.isra.21+0xd7/0x210 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02daa7b>] __extent_writepage_io+0x45b/0x4a0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02da070>] ? end_extent_writepage+0x90/0x90 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02dad00>] __extent_writepage+0x240/0x340 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02db162>] extent_write_cache_pages.isra.15.constprop.31+0x362/0x420 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02dc46c>] extent_writepages+0x5c/0x90 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02bdac0>] ? btrfs_direct_IO+0x320/0x320 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02bc078>] btrfs_writepages+0x28/0x30 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffff8117340e>] do_writepages+0x1e/0x30
Sep 23 18:44:16 sv kernel:  [<ffffffff811674e5>] __filemap_fdatawrite_range+0x65/0x90
Sep 23 18:44:16 sv kernel:  [<ffffffff811675e3>] filemap_fdatawrite_range+0x13/0x20
Sep 23 18:44:16 sv kernel:  [<ffffffffa02cf474>] btrfs_fdatawrite_range+0x24/0x60 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa0300b02>] __btrfs_write_out_cache.isra.13+0x432/0x480 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa03021df>] btrfs_write_out_cache+0x8f/0x120 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02a73b1>] btrfs_start_dirty_block_groups+0x201/0x3f0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02b86d5>] btrfs_commit_transaction+0x1d5/0xcb0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02b9245>] ? start_transaction+0x95/0x5b0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02b3fd5>] transaction_kthread+0x1d5/0x240 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffffa02b3e00>] ? btrfs_cleanup_transaction+0x5a0/0x5a0 [btrfs]
Sep 23 18:44:16 sv kernel:  [<ffffffff81097868>] kthread+0xd8/0xf0
Sep 23 18:44:16 sv kernel:  [<ffffffff81097790>] ? kthread_worker_fn+0x170/0x170
Sep 23 18:44:16 sv kernel:  [<ffffffff8158c3a2>] ret_from_fork+0x42/0x70
Sep 23 18:44:16 sv kernel:  [<ffffffff81097790>] ? kthread_worker_fn+0x170/0x170
Sep 23 18:44:16 sv kernel: Code: 55 48 89 e5 41 55 41 54 53 49 89 fd 49 89 f4 89 d3 48 83 ec 08 f6 05 19 ed 00 00 04 75 5e 49 8b 45 00 4c 89 e2 81 e2 f8 0f 00 00 <48> 8b 04 02 48 85 c0 75 2d 31 db f6 05 d0 ec 00 00 04 75 57 48 
Sep 23 18:44:16 sv kernel: RIP  [<ffffffffa07dcfb0>] __find_stripe+0x30/0xc0 [raid456]