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BUG: KCSAN: data-race in mas_wmb_replace / mtree_range_walk

write to 0xffff88810368fa00 of 8 bytes by task 20964 on cpu 1:
 mte_set_node_dead lib/maple_tree.c:337 [inline]
 mas_topiary_node lib/maple_tree.c:2521 [inline]
 mas_topiary_replace lib/maple_tree.c:2629 [inline]
 mas_wmb_replace+0xebb/0x1510 lib/maple_tree.c:2645
 mas_split lib/maple_tree.c:3372 [inline]
 mas_commit_b_node lib/maple_tree.c:3392 [inline]
 mas_wr_bnode lib/maple_tree.c:4053 [inline]
 mas_wr_store_entry+0x158c/0x2460 lib/maple_tree.c:4094
 mas_store_prealloc+0x6d5/0x960 lib/maple_tree.c:5479
 vma_iter_store mm/vma.h:391 [inline]
 __mmap_new_vma mm/vma.c:2376 [inline]
 __mmap_region mm/vma.c:2462 [inline]
 mmap_region+0xf91/0x1630 mm/vma.c:2540
 do_mmap+0x9ef/0xc80 mm/mmap.c:561
 vm_mmap_pgoff+0x16d/0x2d0 mm/util.c:579
 ksys_mmap_pgoff+0xd0/0x340 mm/mmap.c:607
 x64_sys_call+0x1945/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:10
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88810368fa00 of 8 bytes by task 20965 on cpu 0:
 ma_dead_node lib/maple_tree.c:575 [inline]
 mtree_range_walk+0x347/0x460 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+0x97/0x290 mm/memory.c:6362
 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: 0xffff888104abb90e -> 0xffff88810368fa00

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 20965 Comm: syz.0.6592 Not tainted 6.14.0-syzkaller-07422-gacb4f33713b9 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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