20 fixes, based on f97d10454e4da2aceb44dfa7c59bb43ba9f50199:

Subject: mm, compaction: prevent VM_BUG_ON when terminating freeing scanner
Subject: kasan: add newline to messages
Subject: scripts/gdb: silence 'nothing to do' message
Subject: scripts/gdb: rebuild constants.py on dependancy change
Subject: scripts/gdb: add constants.py to .gitignore
Subject: scripts/gdb: Perform path expansion to lx-symbol's arguments
Subject: Revert "scripts/gdb: add a Radix Tree Parser"
Subject: Revert "scripts/gdb: add documentation example for radix tree"
Subject: madvise_free, thp: fix madvise_free_huge_pmd return value after splitting
Subject: uapi: export lirc.h header
Subject: kasan/quarantine: fix bugs on qlist_move_cache()
Subject: mm, meminit: always return a valid node from early_pfn_to_nid
Subject: mm, meminit: ensure node is online before checking whether pages are uninitialised
Subject: gcov: add support for gcc version >= 6
Subject: vmlinux.lds: account for destructor sections
Subject: mm: thp: move pmd check inside ptl for freeze_page()
Subject: mm: rmap: call page_check_address() with sync enabled to avoid racy check
Subject: mm: thp: refix false positive BUG in page_move_anon_rmap()
Subject: mm: workingset: printk missing log level, use pr_info()
Subject: m32r: fix build warning about putc