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BUG: KCSAN: data-race in mas_state_walk / mas_wmb_replace

write to 0xffff888101f8f300 of 8 bytes by task 22189 on cpu 0:
 mte_set_node_dead lib/maple_tree.c:337 [inline]
 mas_put_in_tree lib/maple_tree.c:1742 [inline]
 mas_topiary_replace lib/maple_tree.c:2559 [inline]
 mas_wmb_replace+0x20d/0x14a0 lib/maple_tree.c:2651
 mas_split lib/maple_tree.c:3390 [inline]
 mas_commit_b_node lib/maple_tree.c:3410 [inline]
 mas_wr_bnode lib/maple_tree.c:4079 [inline]
 mas_wr_store_entry+0x1773/0x2b50 lib/maple_tree.c:4111
 mas_store_prealloc+0x74d/0x9e0 lib/maple_tree.c:5510
 vma_iter_store_overwrite mm/vma.h:501 [inline]
 vma_iter_store_new+0x1c5/0x200 mm/vma.h:508
 vma_complete+0x125/0x580 mm/vma.c:354
 __split_vma+0x5d9/0x650 mm/vma.c:568
 vms_gather_munmap_vmas+0x2b2/0x7b0 mm/vma.c:1380
 do_vmi_align_munmap+0x1a4/0x3d0 mm/vma.c:1527
 do_vmi_munmap+0x1db/0x220 mm/vma.c:1584
 __vm_munmap+0x1a1/0x280 mm/vma.c:3155
 __do_sys_munmap mm/mmap.c:1080 [inline]
 __se_sys_munmap mm/mmap.c:1077 [inline]
 __x64_sys_munmap+0x36/0x50 mm/mmap.c:1077
 x64_sys_call+0x9c0/0x2ff0 arch/x86/include/generated/asm/syscalls_64.h:12
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888101f8f300 of 8 bytes by task 22188 on cpu 1:
 ma_dead_node lib/maple_tree.c:575 [inline]
 mtree_range_walk lib/maple_tree.c:2798 [inline]
 mas_state_walk+0x485/0x650 lib/maple_tree.c:3636
 mas_walk+0x60/0x150 lib/maple_tree.c:4939
 lock_vma_under_rcu+0x8d/0x160 mm/mmap_lock.c:143
 do_user_addr_fault+0x233/0x1090 arch/x86/mm/fault.c:1327
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x62/0xa0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0xffff888109ec8041 -> 0xffff888101f8f300

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 22188 Comm: syz.3.6686 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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