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BUG: KCSAN: data-race in mas_replace_node / mtree_range_walk

write to 0xffff8881044d7400 of 8 bytes by task 9724 on cpu 1:
 mte_set_node_dead lib/maple_tree.c:337 [inline]
 mas_put_in_tree lib/maple_tree.c:1739 [inline]
 mas_replace_node+0x1b8/0x430 lib/maple_tree.c:1753
 mas_wr_node_store lib/maple_tree.c:3867 [inline]
 mas_wr_store_entry+0x1e12/0x23f0 lib/maple_tree.c:4087
 mas_store_prealloc+0x6bf/0x960 lib/maple_tree.c:5479
 vma_iter_store mm/vma.h:391 [inline]
 vma_complete+0x3a7/0x760 mm/vma.c:309
 __split_vma+0x620/0x6a0 mm/vma.c:512
 vms_gather_munmap_vmas+0x2a5/0x7a0 mm/vma.c:1289
 __mmap_prepare mm/vma.c:2246 [inline]
 __mmap_region mm/vma.c:2448 [inline]
 mmap_region+0x464/0x1620 mm/vma.c:2539
 do_mmap+0x98a/0xc30 mm/mmap.c:561
 vm_mmap_pgoff+0x16d/0x2d0 mm/util.c:575
 ksys_mmap_pgoff+0x286/0x330 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 0xffff8881044d7400 of 8 bytes by task 9720 on cpu 0:
 ma_dead_node lib/maple_tree.c:575 [inline]
 mtree_range_walk+0x33d/0x460 lib/maple_tree.c:2792
 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:6381
 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: 0xffff888104402006 -> 0xffff8881044d7400

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 9720 Comm: syz.1.1977 Not tainted 6.14.0-rc6-syzkaller-00202-ga29967be967e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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