- Fix unwinding from irq context of interrupted user process.
- Add purgatory build missing symbols check. That helped to uncover and
fix missing symbols when built with kasan support enabled.
- Couple of ftrace fixes. Avoid broken stack trace and fix recursion
loop in function_graph tracer.
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Merge tag 's390-5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Fix unwinding from irq context of interrupted user process.
- Add purgatory build missing symbols check. That helped to uncover and
fix missing symbols when built with kasan support enabled.
- Couple of ftrace fixes. Avoid broken stack trace and fix recursion
loop in function_graph tracer.
* tag 's390-5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ftrace: save traced function caller
s390/unwind: stop gracefully at user mode pt_regs in irq stack
s390/purgatory: do not build purgatory with kcov, kasan and friends
s390/purgatory: Make sure we fail the build if purgatory has missing symbols
s390/ftrace: fix endless recursion in function_graph tracer
60b04df6bf