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BUG: KCSAN: data-race in mas_wr_modify / mtree_range_walk

write to 0xffff888116586148 of 8 bytes by task 5731 on cpu 0:
 mas_wr_slot_store lib/maple_tree.c:3992 [inline]
 mas_wr_modify+0x1558/0x3c80 lib/maple_tree.c:4188
 mas_wr_store_entry+0x250/0x390 lib/maple_tree.c:4231
 mas_store_prealloc+0x151/0x2a0 lib/maple_tree.c:5437
 vma_iter_store mm/internal.h:1185 [inline]
 vma_expand+0x55c/0x5d0 mm/mmap.c:666
 mmap_region+0x7db/0x1650 mm/mmap.c:2790
 do_mmap+0x67e/0xa90 mm/mmap.c:1379
 vm_mmap_pgoff+0x12e/0x240 mm/util.c:556
 ksys_mmap_pgoff+0xc5/0x330 mm/mmap.c:1425
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888116586148 of 8 bytes by task 5739 on cpu 1:
 mtree_range_walk+0x1b4/0x450 lib/maple_tree.c:2784
 mas_state_walk lib/maple_tree.c:3680 [inline]
 mas_walk+0x16e/0x320 lib/maple_tree.c:4861
 lock_vma_under_rcu+0x84/0x290 mm/memory.c:5602
 do_user_addr_fault arch/x86/mm/fault.c:1356 [inline]
 handle_page_fault arch/x86/mm/fault.c:1507 [inline]
 exc_page_fault+0x164/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

value changed: 0x00007f90b8439fff -> 0x00007f90b8418fff

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 5739 Comm: syz-executor.2 Not tainted 6.7.0-syzkaller-01367-g35f11a3710cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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