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BUG: KCSAN: data-race in mas_replace_node / mtree_range_walk

write to 0xffff888106892900 of 8 bytes by task 3739 on cpu 0:
 mte_set_node_dead lib/maple_tree.c:323 [inline]
 mas_put_in_tree lib/maple_tree.c:1726 [inline]
 mas_replace_node+0x1b5/0x440 lib/maple_tree.c:1740
 mas_wr_node_store lib/maple_tree.c:3956 [inline]
 mas_wr_modify+0x2bc3/0x3c90 lib/maple_tree.c:4189
 mas_wr_store_entry+0x250/0x390 lib/maple_tree.c:4227
 mas_store_prealloc+0x151/0x2b0 lib/maple_tree.c:5482
 vma_iter_store mm/internal.h:1452 [inline]
 vma_complete+0x3a7/0x760 mm/mmap.c:576
 __split_vma+0x5dc/0x690 mm/mmap.c:2511
 split_vma mm/mmap.c:2537 [inline]
 vma_modify+0x108/0x1f0 mm/mmap.c:2571
 vma_modify_flags include/linux/mm.h:3298 [inline]
 mprotect_fixup+0x335/0x610 mm/mprotect.c:639
 do_mprotect_pkey+0x673/0x9a0 mm/mprotect.c:822
 __do_sys_mprotect mm/mprotect.c:843 [inline]
 __se_sys_mprotect mm/mprotect.c:840 [inline]
 __x64_sys_mprotect+0x48/0x60 mm/mprotect.c:840
 x64_sys_call+0x26cf/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:11
 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 0xffff888106892900 of 8 bytes by task 3743 on cpu 1:
 ma_dead_node lib/maple_tree.c:560 [inline]
 mtree_range_walk+0x33d/0x460 lib/maple_tree.c:2793
 mas_state_walk lib/maple_tree.c:3678 [inline]
 mas_walk+0x16e/0x320 lib/maple_tree.c:4906
 lock_vma_under_rcu+0x84/0x260 mm/memory.c:5995
 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: 0xffff888106892a06 -> 0xffff888106892900

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3743 Comm: syz.0.112 Not tainted 6.11.0-rc2-syzkaller-00194-gafdab700f65e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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