================================================================== BUG: KCSAN: data-race in mas_replace_node / mas_state_walk write to 0xffff888103c4ad00 of 8 bytes by task 2078 on cpu 1: mte_set_node_dead lib/maple_tree.c:320 [inline] mas_put_in_tree lib/maple_tree.c:1746 [inline] mas_replace_node+0x1b5/0x430 lib/maple_tree.c:1760 mas_wr_node_store lib/maple_tree.c:3995 [inline] mas_wr_modify+0x287c/0x37d0 lib/maple_tree.c:4229 mas_wr_store_entry+0x235/0x350 lib/maple_tree.c:4269 mas_store_prealloc+0x155/0x2b0 lib/maple_tree.c:5460 vma_iter_store mm/internal.h:1198 [inline] vma_complete+0x2a0/0x650 mm/mmap.c:532 __split_vma+0x550/0x5d0 mm/mmap.c:2411 split_vma mm/mmap.c:2437 [inline] vma_modify+0x152/0x240 mm/mmap.c:2472 vma_modify_flags include/linux/mm.h:3271 [inline] mprotect_fixup+0x324/0x5c0 mm/mprotect.c:635 do_mprotect_pkey+0x641/0x920 mm/mprotect.c:809 __do_sys_mprotect mm/mprotect.c:830 [inline] __se_sys_mprotect mm/mprotect.c:827 [inline] __x64_sys_mprotect+0x48/0x50 mm/mprotect.c:827 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888103c4ad00 of 8 bytes by task 2086 on cpu 0: ma_dead_node lib/maple_tree.c:555 [inline] mtree_range_walk lib/maple_tree.c:2805 [inline] mas_state_walk+0x267/0x5d0 lib/maple_tree.c:3712 mas_walk+0x31/0x120 lib/maple_tree.c:4888 lock_vma_under_rcu+0x8d/0x2a0 mm/memory.c:5496 do_user_addr_fault arch/x86/mm/fault.c:1356 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x164/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0xffff888103c4a506 -> 0xffff888103c4ad00 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2086 Comm: syz-executor.3 Not tainted 6.6.0-syzkaller-16039-gac347a0655db #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 ==================================================================