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BUG: KCSAN: data-race in __rb_rotate_set_parents / vm_area_dup

write to 0xffff888122765828 of 8 bytes by task 18473 on cpu 0:
 rb_set_parent_color include/linux/rbtree_augmented.h:165 [inline]
 __rb_rotate_set_parents+0x5a/0xe0 lib/rbtree.c:80
 __rb_insert lib/rbtree.c:215 [inline]
 __rb_insert_augmented+0x10a/0x360 lib/rbtree.c:459
 rb_insert_augmented include/linux/rbtree_augmented.h:50 [inline]
 rb_insert_augmented_cached include/linux/rbtree_augmented.h:60 [inline]
 vma_interval_tree_insert+0x192/0x220 mm/interval_tree.c:23
 __vma_adjust+0x645/0x1190 mm/mmap.c:852
 vma_adjust include/linux/mm.h:2475 [inline]
 __split_vma+0x1fe/0x340 mm/mmap.c:2695
 __do_munmap+0x20d/0xb20 mm/mmap.c:2782
 __vm_munmap+0xa9/0x130 mm/mmap.c:2856
 vm_munmap+0x25/0x40 mm/mmap.c:2874
 elf_map+0x1b9/0x200 fs/binfmt_elf.c:379
 load_elf_binary+0x87d/0x2b10 fs/binfmt_elf.c:983
 search_binary_handler fs/exec.c:1718 [inline]
 search_binary_handler+0x11c/0x3f0 fs/exec.c:1695
 exec_binprm fs/exec.c:1761 [inline]
 __do_execve_file.isra.0+0xb53/0x1120 fs/exec.c:1881
 do_execveat_common fs/exec.c:1927 [inline]
 do_execve+0x39/0x50 fs/exec.c:1944
 call_usermodehelper_exec_async+0x394/0x3e0 kernel/umh.c:112
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffff8881227657d0 of 200 bytes by task 18472 on cpu 1:
 vm_area_dup+0x71/0x110 kernel/fork.c:362
 __split_vma+0x83/0x340 mm/mmap.c:2666
 __do_munmap+0x20d/0xb20 mm/mmap.c:2782
 __vm_munmap+0xa9/0x130 mm/mmap.c:2856
 vm_munmap+0x25/0x40 mm/mmap.c:2874
 elf_map+0x1b9/0x200 fs/binfmt_elf.c:379
 load_elf_binary+0x87d/0x2b10 fs/binfmt_elf.c:983
 search_binary_handler fs/exec.c:1718 [inline]
 search_binary_handler+0x11c/0x3f0 fs/exec.c:1695
 exec_binprm fs/exec.c:1761 [inline]
 __do_execve_file.isra.0+0xb53/0x1120 fs/exec.c:1881
 do_execveat_common fs/exec.c:1927 [inline]
 do_execve+0x39/0x50 fs/exec.c:1944
 call_usermodehelper_exec_async+0x394/0x3e0 kernel/umh.c:112
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18472 Comm: modprobe Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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