Starting Create Static Device Nodes in /dev... [ OK ] Started Create Static Device Nodes in /dev. [ OK ] Started dracut cmdline hook. Starting dracut pre-udev hook... Starting Open-iSCSI... [ 2.599811] scsi_transport_iscsi: module verification failed: signature and/or required key missing - tainting kernel [ 2.607042] Loading iSCSI transport class v2.0-870. [ 2.610505] device-mapper: uevent: version 1.0.3 [ 2.613366] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: dm-devel@xxxxxxxxxx [ OK ] Started Open-iSCSI. [ 2.627327] sunrpc: module has bad taint, not creating trace events [ 2.630961] RPC: Registered named UNIX socket transport module. [ 2.634473] RPC: Registered udp transport module. [ 2.637189] RPC: Registered tcp transport module. [ 2.639876] RPC: Registered tcp NFSv4.1 backchannel transport module. [ OK ] Started dracut pre-udev hook. Starting udev Kernel Device Manager... [ OK ] Started udev Kernel Device Manager. Starting dracut pre-trigger hook... [ OK ] Started dracut pre-trigger hook. Starting udev Coldplug all Devices... Mounting Configuration File System... [ OK ] Mounted Configuration File System. [ OK ] Started udev Coldplug all Devices. Starting dracut initqueue hook... [ OK ] Reached target System Initializa[ 2.801892] FDC 0 is a S82078B tion. [ OK ] Listening on Open-iSCSI iscsiuio Socket. [ OK ] Reached target Sockets. [ OK ] Reached target Basic System. [ 2.835034] scsi0 : ata_piix [ 2.840317] scsi1 : ata_piix [ 2.842267] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc100 irq 14 [ 2.845861] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc108 irq 15 [ 2.853840] AVX version of gcm_enc/dec engaged. [ 2.859963] xen_netfront: Initialising Xen virtual ethernet driver [ 2.867156] alg: No test for __gcm-aes-aesni (__driver-gcm-aes-aesni) [ 2.885861] blkfront: xvda: barrier or flush: disabled; persistent grants: disabled; indirect descriptors: enabled; [ 2.889046] alg: No test for crc32 (crc32-pclmul) [ 2.899290] xvda: xvda1 [ 2.997751] blkfront: xvdc: flush diskcache: enabled; persistent grants: disabled; indirect descriptors: enabled; [ 3.007401] xvdc: unknown partition table [ 3.010465] Setting capacity to 31992832 [ 3.012922] xvdc: detected capacity change from 0 to 16380329984 [ 3.017408] blkfront: xvdd: flush diskcache: enabled; persistent grants: disabled; indirect descriptors: enabled; [ 3.023861] xvdd: unknown partition table [ 3.026481] Setting capacity to 31992832 [ 3.029051] xvdd: detected capacity change from 0 to 16380329984 [ 3.033320] blkfront: xvdf: barrier or flush: disabled; persistent grants: disabled; indirect descriptors: enabled; [ 3.040712] random: nonblocking pool is initialized [ 3.057432] xvdf: unknown partition table [ 3.060807] Setting capacity to 41943040 [ 3.063194] xvdf: detected capacity change from 0 to 21474836480 [ 3.067684] blkfront: xvdb: barrier or flush: disabled; persistent grants: disabled; indirect descriptors: enabled; [ 3.076835] xvdb: unknown partition table [ 3.079692] Setting capacity to 16777216 [ 3.082112] xvdb: detected capacity change from 0 to 8589934592 [ 3.086853] vbd vbd-51712: 16 xlvbd_add at /local/domain/0/backend/vbd/9543/51712 [ 3.094147] ------------[ cut here ]------------ [ 3.095081] kernel BUG at drivers/block/xen-blkfront.c:1701! [ 3.095081] invalid opcode: 0000 [#1] SMP [ 3.095081] Modules linked in: ata_generic(F) pata_acpi(F) crct10dif_pclmul(F) crct10dif_common(F) crc32_pclmul(F) crc32c_intel(F) xen_netfront(F) xen_blkfront(F+) aesni_intel(F) lrw(F) gf128mul(F) glue_helper(F) ablk_helper(F) cryptd(F) serio_raw(F) ata_piix(F) libata(F) floppy(F) sunrpc(F) dm_mirror(F) dm_region_hash(F) dm_log(F) dm_mod(F) scsi_transport_iscsi(F) [ 3.095081] CPU: 1 PID: 49 Comm: xenwatch Tainted: GF 3.14.74-1.test.x86_64 #1 [ 3.095081] Hardware name: Xen HVM domU, BIOS 4.2.amazon 05/12/2016 [ 3.095081] task: ffff8800e9f7d100 ti: ffff8800e98ac000 task.ti: ffff8800e98ac000 [ 3.095081] RIP: 0010:[] [] blkfront_setup_indirect+0x41f/0x430 [xen_blkfront] [ 3.095081] RSP: 0018:ffff8800e98adcd8 EFLAGS: 00010283 [ 3.095081] RAX: ffff8800344dca80 RBX: ffff8800e56872c8 RCX: 0000000000000020 [ 3.095081] RDX: ffff8800344dca70 RSI: ffff8800e56872b8 RDI: ffff8800344dca90 [ 3.095081] RBP: ffff8800e98add28 R08: ffff8800344dca70 R09: ffff8800eb403c00 [ 3.095081] R10: ffffffffa017f4d2 R11: ffffffffffffffe8 R12: ffff8800e5686000 [ 3.095081] R13: ffff8800e56872b8 R14: 0000000000000020 R15: ffff8800344dca80 [ 3.095081] FS: 0000000000000000(0000) GS:ffff8800efc20000(0000) knlGS:0000000000000000 [ 3.095081] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.095081] CR2: 00007fadee1c6890 CR3: 0000000035b77000 CR4: 00000000001406e0 [ 3.095081] Stack: [ 3.095081] 0000000000000020 0000000000000001 00000020a01811f8 00000100e98addcc [ 3.095081] 0000000029d35509 ffff8800e5686000 0000000000000004 ffff8800e98addcc [ 3.095081] ffff8800e9866040 0000000000000001 ffff8800e98ade18 ffffffffa017fcfe [ 3.095081] Call Trace: [ 3.095081] [] blkback_changed+0x4fe/0x1280 [xen_blkfront] [ 3.095081] [] ? xenbus_gather+0x170/0x190 [ 3.095081] [] ? __slab_free+0x10e/0x277 [ 3.095081] [] xenbus_otherend_changed+0xad/0x110 [ 3.095081] [] ? xenwatch_thread+0x66/0x160 [ 3.095081] [] ? unregister_xenbus_watch+0x1f0/0x1f0 [ 3.095081] [] backend_changed+0x13/0x20 [ 3.095081] [] xenwatch_thread+0x55/0x160 [ 3.095081] [] ? abort_exclusive_wait+0xb0/0xb0 [ 3.095081] [] kthread+0xd8/0xf0 [ 3.095081] [] ? kthread_create_on_node+0x1a0/0x1a0 [ 3.095081] [] ret_from_fork+0x58/0x90 [ 3.095081] [] ? kthread_create_on_node+0x1a0/0x1a0 [ 3.095081] Code: e1 48 85 c0 75 ce 49 8d 84 24 40 01 00 00 48 89 45 b8 e9 91 fd ff ff 4c 89 ff e8 bd ea 03 e1 e9 f2 fc ff ff 31 c0 e9 2e fe ff ff <0f> 0b e8 1a 5f ef e0 0f 0b 0f 1f 84 00 00 00 00 00 0f 1f 44 00 [ 3.095081] RIP [] blkfront_setup_indirect+0x41f/0x430 [xen_blkfront] [ 3.095081] RSP [ 3.278152] ---[ end trace dda1793e7deb0b65 ]--- [ 3.280824] Kernel panic - not syncing: Fatal exception