================================================================== BUG: KCSAN: data-race in __anon_vma_prepare / lock_vma_under_rcu write to 0xffff8881069c0d90 of 8 bytes by task 25330 on cpu 0: __anon_vma_prepare+0x147/0x2b0 mm/rmap.c:214 anon_vma_prepare include/linux/rmap.h:159 [inline] do_anonymous_page mm/memory.c:4170 [inline] do_pte_missing mm/memory.c:3729 [inline] handle_pte_fault mm/memory.c:5039 [inline] __handle_mm_fault mm/memory.c:5180 [inline] handle_mm_fault+0x224c/0x2dd0 mm/memory.c:5345 do_user_addr_fault arch/x86/mm/fault.c:1415 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x2f7/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __put_user_4+0x11/0x20 arch/x86/lib/putuser.S:86 __sys_socketpair+0xba/0x420 net/socket.c:1756 __do_sys_socketpair net/socket.c:1822 [inline] __se_sys_socketpair net/socket.c:1819 [inline] __x64_sys_socketpair+0x52/0x60 net/socket.c:1819 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff8881069c0d90 of 8 bytes by task 25327 on cpu 1: lock_vma_under_rcu+0x16a/0x2a0 mm/memory.c:5510 do_user_addr_fault arch/x86/mm/fault.c:1356 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x164/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x0000000000000000 -> 0xffff88814bd5d750 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 25327 Comm: syz-executor.3 Not tainted 6.7.0-rc8-syzkaller-00174-g95c8a35f1c01 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ==================================================================