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BUG: KCSAN: data-race in mas_wr_store_entry / mtree_range_walk

write to 0xffff888107c4e868 of 8 bytes by task 12372 on cpu 1:
 mas_wr_slot_store lib/maple_tree.c:3899 [inline]
 mas_wr_store_entry+0x162b/0x2e80 lib/maple_tree.c:4084
 mas_store_prealloc+0x6bf/0x960 lib/maple_tree.c:5479
 vma_iter_store mm/vma.h:391 [inline]
 commit_merge+0x441/0x740 mm/vma.c:663
 vma_expand+0x211/0x360 mm/vma.c:1073
 vma_merge_new_range+0x2da/0x340 mm/vma.c:1020
 __mmap_region mm/vma.c:2452 [inline]
 mmap_region+0x7e0/0x1620 mm/vma.c:2535
 do_mmap+0x98a/0xc30 mm/mmap.c:561
 vm_mmap_pgoff+0x16d/0x2d0 mm/util.c:575
 ksys_mmap_pgoff+0xd0/0x330 mm/mmap.c:607
 x64_sys_call+0x1940/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:10
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888107c4e868 of 8 bytes by task 12375 on cpu 0:
 mtree_range_walk+0x1b4/0x460 lib/maple_tree.c:2781
 mas_state_walk lib/maple_tree.c:3609 [inline]
 mas_walk+0x16e/0x320 lib/maple_tree.c:4909
 lock_vma_under_rcu+0x95/0x270 mm/memory.c:6363
 do_user_addr_fault arch/x86/mm/fault.c:1328 [inline]
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x150/0x650 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0x00007fb61bf7efff -> 0x00007fb61bf5dfff

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 12375 Comm: syz.6.2675 Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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