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BUG: KCSAN: data-race in mas_walk / mas_wmb_replace

write to 0xffff888102e40800 of 8 bytes by task 24568 on cpu 0:
 mte_set_node_dead lib/maple_tree.c:323 [inline]
 mas_put_in_tree lib/maple_tree.c:1726 [inline]
 mas_topiary_replace lib/maple_tree.c:2557 [inline]
 mas_wmb_replace+0x20f/0x14e0 lib/maple_tree.c:2648
 mas_split lib/maple_tree.c:3395 [inline]
 mas_commit_b_node lib/maple_tree.c:3448 [inline]
 mas_wr_bnode lib/maple_tree.c:4160 [inline]
 mas_wr_modify+0x183d/0x3c80 lib/maple_tree.c:4198
 mas_wr_store_entry+0x250/0x390 lib/maple_tree.c:4231
 mas_store_prealloc+0x151/0x2a0 lib/maple_tree.c:5437
 vma_iter_store+0x168/0x180 mm/internal.h:1185
 mmap_region+0xf8b/0x1640 mm/mmap.c:2892
 do_mmap+0x6a5/0xab0 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+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888102e40800 of 8 bytes by task 24567 on cpu 1:
 mte_parent lib/maple_tree.c:545 [inline]
 mte_dead_node lib/maple_tree.c:577 [inline]
 mas_start lib/maple_tree.c:1369 [inline]
 mas_state_walk lib/maple_tree.c:3673 [inline]
 mas_walk+0x123/0x320 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+0x165/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

value changed: 0xffff888136dbea41 -> 0xffff888102e40800

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 24567 Comm: syz-executor.0 Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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