Comment 0 for bug 1452293

Kernel crash whilst building new kernel:

Steps to reproduce:

wget https://www.kernel.org/pub/linux/kernel/v4.x/testing/linux-4.1-rc2.tar.xz
tar xf linux-4.1-rc2.tar.xz
cd linux-4.1-rc2/
make mrproper
make olddefconfig
make -j20

I noticed that the output from the build had stopped then noticed the following messages (via dmesg):

[ 15.285274] random: nonblocking pool is initialized
[ 15.633718] xgene-enet 17020000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[ 2541.173142] Unable to handle kernel paging request at virtual address 1000000000000018
[ 2541.181062] pgd = ffffffc3ec61d000
[ 2541.184449] [1000000000000018] *pgd=0000000000000000, *pud=0000000000000000
[ 2541.191476] Internal error: Oops: 96000005 [#1] SMP
[ 2541.196331] Modules linked in: rtc_xgene xgene_rng uio_pdrv_genirq uio autofs4 realtek ahci_xgene libahci_platform xgene_enet libahci aes_neon_blk ablk_
helper cryptd
[ 2541.211214] CPU: 2 PID: 17206 Comm: sh Not tainted 3.19.0-15-generic #15-Ubuntu
[ 2541.218488] Hardware name: APM X-Gene Mustang board (DT)
[ 2541.223775] task: ffffffc3ec2d3d40 ti: ffffffc0fec1c000 task.ti: ffffffc0fec1c000
[ 2541.231236] PC is at __d_lookup+0x88/0x194
[ 2541.235324] LR is at d_lookup+0x3c/0x64
[ 2541.239148] pc : [<ffffffc00022a120>] lr : [<ffffffc00022a268>] pstate: 00000145
[ 2541.246509] sp : ffffffc0fec1fb40
[ 2541.249807] x29: ffffffc0fec1fb40 x28: 0000000000020241
[ 2541.255114] x27: 000000001b2865a6 x26: ffffffc0fec1fe88
[ 2541.260421] x25: ffffffffffffffff x24: ffffffc0ff01d02d
[ 2541.265728] x23: 000000000000000b x22: ffffffc0fec1fda0
[ 2541.271045] x21: ffffffc3b80ebd80 x20: 0ffffffffffffff8
[ 2541.276353] x19: 1000000000000000 x18: 0000000000000000
[ 2541.281659] x17: 0000002000118748 x16: ffffffc00020f430
[ 2541.286967] x15: 0000000000000008 x14: 636e692f8134366d
[ 2541.292275] x13: 72612f8168637261 x12: 492d812069706175
[ 2541.297594] x11: 0000000000000000 x10: fefefefefefefeff
[ 2541.302904] x9 : 0000000000000000 x8 : ffffffc3e9ed2f40
[ 2541.308221] x7 : 0000000000000000 x6 : 000000000000003f
[ 2541.313532] x5 : ffffffc0ff01d000 x4 : 0000000000000015
[ 2541.318848] x3 : ffffffc000b64f60 x2 : 000000009e370001
[ 2541.324155] x1 : ffffffc3eec00000 x0 : 00000000001e7194
[ 2541.330959] Process sh (pid: 17206, stack limit = 0xffffffc0fec1c058)
[ 2541.337367] Stack: (0xffffffc0fec1fb40 to 0xffffffc0fec20000)
[ 2541.343088] fb40: fec1fba0 ffffffc0 0022a268 ffffffc0 0000dd6e 00000000 00b5a000 ffffffc0
[ 2541.351235] fb60: fec1fda0 ffffffc0 b80ebd80 ffffffc3 00000301 00000000 b80ebd80 ffffffc3
[ 2541.359378] fb80: 00000001 00000000 fec1fe88 ffffffc0 fec1fd90 ffffffc0 00020241 00000000
[ 2541.367516] fba0: fec1fbd0 ffffffc0 0021b0e0 ffffffc0 fec1fd40 ffffffc0 b80ebd80 ffffffc3
[ 2541.375654] fbc0: fec1fda0 ffffffc0 fec1fca7 ffffffc0 fec1fc10 ffffffc0 0021d790 ffffffc0
[ 2541.383792] fbe0: fec1fd40 ffffffc0 b8113458 ffffffc3 b80ebd80 ffffffc3 ff01d000 ffffffc0
[ 2541.391930] fc00: fec1fd3c ffffffc0 fec1fd90 ffffffc0 fec1fcb0 ffffffc0 002204c8 ffffffc0
[ 2541.400066] fc20: fe52d000 ffffffc0 fec1fd90 ffffffc0 fec1fe88 ffffffc0 ff01d000 ffffffc0
[ 2541.408204] fc40: 00000041 00000000 ffffff9c 00000000 0000011a 00000000 00000038 00000000
[ 2541.416343] fc60: 00b6e000 ffffffc0 00000000 00000000 fec1fcb0 ffffffc0 002204a4 ffffffc0
[ 2541.424481] fc80: 00000001 00000000 ff01d000 ffffffc0 fe52d000 ffffffc0 00000022 00000000

(the rest is attached)

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-15-generic 3.19.0-15.15
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic aarch64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 1 Jan 1 1970 seq
 crw-rw---- 1 root audio 116, 33 Jan 1 1970 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.17.2-0ubuntu1
Architecture: arm64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Wed May 6 14:08:16 2015
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
Lspci:

Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
PciMultimedia:

ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:

ProcKernelCmdLine: console=ttyS0,115200n8 root=/dev/sda1 rw rootwait
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-15-generic N/A
 linux-backports-modules-3.19.0-15-generic N/A
 linux-firmware 1.143
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)