==================================================================
BUG: KCSAN: data-race in mas_walk / mas_wmb_replace

write to 0xffff888112703200 of 8 bytes by task 10089 on cpu 0:
 mte_set_node_dead lib/maple_tree.c:323 [inline]
 mas_put_in_tree lib/maple_tree.c:1725 [inline]
 mas_topiary_replace lib/maple_tree.c:2554 [inline]
 mas_wmb_replace+0x222/0x14d0 lib/maple_tree.c:2645
 mas_split lib/maple_tree.c:3375 [inline]
 mas_commit_b_node lib/maple_tree.c:3395 [inline]
 mas_wr_bnode lib/maple_tree.c:4044 [inline]
 mas_wr_store_entry+0x163c/0x2d00 lib/maple_tree.c:4085
 mas_store_prealloc+0x6bf/0x960 lib/maple_tree.c:5520
 vma_iter_store+0x168/0x190 mm/vma.h:470
 mmap_region+0x1286/0x1710 mm/mmap.c:1523
 do_mmap+0x718/0xb60 mm/mmap.c:496
 vm_mmap_pgoff+0x133/0x290 mm/util.c:588
 ksys_mmap_pgoff+0xd0/0x330 mm/mmap.c:542
 x64_sys_call+0x1884/0x2d60 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 0xffff888112703200 of 8 bytes by task 10088 on cpu 1:
 mte_parent lib/maple_tree.c:546 [inline]
 mte_dead_node lib/maple_tree.c:578 [inline]
 mas_start lib/maple_tree.c:1368 [inline]
 mas_state_walk lib/maple_tree.c:3594 [inline]
 mas_walk+0x123/0x320 lib/maple_tree.c:4948
 lock_vma_under_rcu+0x95/0x260 mm/memory.c:6228
 do_user_addr_fault arch/x86/mm/fault.c:1329 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x150/0x650 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0xffff8881042e4581 -> 0xffff888112703200

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 10088 Comm: syz.2.1034 Tainted: G        W          6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================