Comment 32 for bug 1097213

This bug reproduced while running cpu_hotplug_latency_with_load in scheduler test suite on TC2.

LAVA job:
http://validation.linaro.org/scheduler/job/87385/log_file#L_43_1331
If you do not have access to this job can refer attached test log file.

Kernel panic log:
------------------------
[ 1260.266037] CPU1: Booted secondary processor
 [ 1262.266710] CPU1: shutdown
 [ 1262.274830] Unable to handle kernel NULL pointer dereference at virtual address 00000004
 [ 1262.298693] pgd = edcac000
 [ 1262.306661] [00000004] *pgd=00000000
 [ 1262.317209] Internal error: Oops: 805 [#1] SMP THUMB2
 [ 1262.332095] Modules linked in: gator
 [ 1262.342655] CPU: 0 PID: 5624 Comm: run.sh Not tainted 3.10.19-00262-gf3401c5 #1
 [ 1262.364208] task: ee9db0c0 ti: ecfd6000 task.ti: ecfd6000
 [ 1262.380137] PC is at migrate_timer_list+0x40/0x70
 [ 1262.394006] LR is at timer_cpu_notify+0x14b/0x1f8
 [ 1262.407875] pc : [<c03cf624>] lr : [<c03cdbbf>] psr: 200001f3
 [ 1262.407875] sp : ecfd7e70 ip : 00000000 fp : 00000000
 [ 1262.441733] r10: c16b6050 r9 : c062e220 r8 : 00200200
 [ 1262.457135] r7 : c0642400 r6 : ef0d63fc r5 : c16b7d44 r4 : 0000007e
 [ 1262.476381] r3 : ef0d63fc r2 : 00000000 r1 : c16b7d44 r0 : c0642400
 [ 1262.495628] Flags: nzCv IRQs off FIQs off Mode SVC_32 ISA Thumb Segment user
 [ 1262.517695] Control: 50c5387d Table: adcac06a DAC: 00000015
 [ 1262.534632]
 [ 1262.534632] PC: 0xc03cf5a4:

Full Kernel panic log attached to this bug.

Linux kernel version:
----------------------------
Linux version 3.10.19-00262-gf3401c5 (jenkins-build@ip-10-184-27-243) (gcc version 4.7.4 20131111 (prerelease) (Linaro GCC 4.7-2013.11) ) #1 SMP Thu Nov 21 01:38:10 UTC 2013

Android build:
-------------------
https://android-build.linaro.org/builds/~linaro-android-restricted/vexpress-linaro-lsk/#build=160
"parameters":
                "boot": "https://snapshots.linaro.org/android/~linaro-android-restricted/vexpress-linaro-lsk/160/boot.tar.bz2",
                "data": "https://snapshots.linaro.org/android/~linaro-android-restricted/vexpress-linaro-lsk/160/userdata.tar.bz2",
                "system": "https://snapshots.linaro.org/android/~linaro-android-restricted/vexpress-linaro-lsk/160/system.tar.bz2"