Comment 19 for bug 1040413

observed with the panda 4430 jb image
https://android-build.linaro.org/builds/~linaro-android/panda-jb-gcc47-tilt-tracking-blob/#build=100
when enter powertop from adb shell on host the device is go into Hang state & serial console is also stops.

log:

[ 94.826324] Unable to handle kernel paging request at virtual address e66107c0
[ 94.833953] pgd = e1b08000
[ 94.836822] [e66107c0] *pgd=00000000
[ 94.840606] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 94.846191] Modules linked in: wl12xx wlcore mac80211 cfg80211 lib80211 btwilink rfcomm bnep bluetooth gator
[ 94.856628] CPU: 0 Not tainted (3.4.0-gc9c93b6 #1)
[ 94.862091] PC is at vmap_page_range_noflush+0xc8/0x19c
[ 94.867584] LR is at map_kernel_range_noflush+0x1c/0x20
[ 94.873107] pc : [<c00e5a38>] lr : [<c00e6f30>] psr: 80070113
[ 94.873107] sp : e1adfd80 ip : e66107c0 fp : e1adfdc4
[ 94.885223] r10: e66107c0 r9 : c074b048 r8 : c07e1040
[ 94.890747] r7 : c0007f98 r6 : fe7f1000 r5 : 00000000 r4 : fe7f0000
[ 94.897644] r3 : e1a82880 r2 : e66107c0 r1 : fe7f0fff r0 : fe7f0000
[ 94.897644] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 94.897644] Control: 10c5387d Table: a1b0804a DAC: 00000015