patches fix ftracetest hang on arm

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Hi All,

BUG if we attempt to return to userspace but the to-be-restored PSR
value keeps us in privileged mode (defeating an issue that ftracetest
found).

Fixing patches are following, apply top down on LTS *v4.14/4.9/4.4*
They are tested by lkft and kernelci build/boot, no regression found.

8bafae202c82 ARM: BUG if jumping to usermode address in kernel mode
3aaf33bebda8 ARM: avoid faulting on qemu


Thanks
Alex



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