================================================================== BUG: KCSAN: data-race in mas_replace_node / mtree_range_walk write to 0xffff88811f3dd900 of 8 bytes by task 15535 on cpu 0: mte_set_node_dead lib/maple_tree.c:337 [inline] mas_put_in_tree lib/maple_tree.c:1739 [inline] mas_replace_node+0x1b8/0x430 lib/maple_tree.c:1753 mas_wr_node_store lib/maple_tree.c:3867 [inline] mas_wr_store_entry+0x2146/0x2e80 lib/maple_tree.c:4087 mas_store_prealloc+0x6bf/0x960 lib/maple_tree.c:5479 vma_iter_store mm/vma.h:391 [inline] vma_complete+0x3a7/0x760 mm/vma.c:309 __split_vma+0x5d6/0x6a0 mm/vma.c:512 split_vma mm/vma.c:542 [inline] vma_modify+0xd3/0x1e0 mm/vma.c:1521 vma_modify_flags+0xf1/0x120 mm/vma.c:1547 mprotect_fixup+0x31a/0x5e0 mm/mprotect.c:666 do_mprotect_pkey+0x6cc/0x9a0 mm/mprotect.c:840 __do_sys_mprotect mm/mprotect.c:861 [inline] __se_sys_mprotect mm/mprotect.c:858 [inline] __x64_sys_mprotect+0x48/0x60 mm/mprotect.c:858 x64_sys_call+0x2770/0x2dc0 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 0xffff88811f3dd900 of 8 bytes by task 15537 on cpu 1: ma_dead_node lib/maple_tree.c:575 [inline] mtree_range_walk+0x33d/0x460 lib/maple_tree.c:2792 mas_state_walk lib/maple_tree.c:3609 [inline] mas_walk+0x16e/0x320 lib/maple_tree.c:4909 lock_vma_under_rcu+0x95/0x270 mm/memory.c:6363 do_user_addr_fault arch/x86/mm/fault.c:1328 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x150/0x650 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0xffff88811f3ddc0e -> 0xffff88811f3dd900 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 15537 Comm: syz.0.2928 Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 ==================================================================