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BUG: KCSAN: data-race in mas_walk / mas_wmb_replace

write to 0xffff8881079be000 of 8 bytes by task 8322 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/0x14f0 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/0x3c90 lib/maple_tree.c:4198
 mas_wr_store_entry+0x250/0x390 lib/maple_tree.c:4231
 mas_store_prealloc+0x151/0x2b0 lib/maple_tree.c:5487
 vma_iter_store mm/internal.h:1185 [inline]
 vma_complete+0x3a7/0x760 mm/mmap.c:532
 __split_vma+0x58d/0x610 mm/mmap.c:2389
 split_vma mm/mmap.c:2415 [inline]
 vma_modify+0x156/0x240 mm/mmap.c:2450
 vma_modify_flags include/linux/mm.h:3283 [inline]
 mprotect_fixup+0x325/0x5c0 mm/mprotect.c:635
 do_mprotect_pkey+0x655/0x940 mm/mprotect.c:809
 __do_sys_mprotect mm/mprotect.c:830 [inline]
 __se_sys_mprotect mm/mprotect.c:827 [inline]
 __x64_sys_mprotect+0x48/0x60 mm/mprotect.c:827
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff8881079be000 of 8 bytes by task 8336 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:4911
 lock_vma_under_rcu+0x84/0x2a0 mm/memory.c:5622
 do_user_addr_fault arch/x86/mm/fault.c:1354 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x161/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0xffff88814672da81 -> 0xffff8881079be000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 8336 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-01185-g855684c7d938 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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