================================================================== BUG: KCSAN: data-race in mas_wr_store_entry / mtree_range_walk write to 0xffff8881043a5210 of 8 bytes by task 27967 on cpu 1: mas_wr_slot_store lib/maple_tree.c:3889 [inline] mas_wr_store_entry+0x146b/0x2d00 lib/maple_tree.c:4075 mas_store_prealloc+0x6bf/0x960 lib/maple_tree.c:5520 vma_iter_store mm/vma.h:470 [inline] commit_merge+0x441/0x740 mm/vma.c:609 vma_expand+0x211/0x360 mm/vma.c:1024 vma_merge_new_range+0x2cf/0x3e0 mm/vma.c:963 mmap_region+0x887/0x16e0 mm/mmap.c:1416 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 0xffff8881043a5210 of 8 bytes by task 27972 on cpu 0: mtree_range_walk+0x1b4/0x460 lib/maple_tree.c:2779 mas_state_walk lib/maple_tree.c:3601 [inline] mas_walk+0x16e/0x320 lib/maple_tree.c:4948 lock_vma_under_rcu+0x95/0x260 mm/memory.c:6224 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: 0x00007fbcf8d6efff -> 0xffffffff852a5680 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 27972 Comm: syz.0.9459 Tainted: G W 6.12.0-rc2-syzkaller-00305-g7234e2ea0edd #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================