================================================================== BUG: KCSAN: data-race in __anon_vma_prepare / lock_vma_under_rcu write to 0xffff888104de69a0 of 8 bytes by task 13704 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:4102 [inline] do_pte_missing mm/memory.c:3662 [inline] handle_pte_fault mm/memory.c:4939 [inline] __handle_mm_fault mm/memory.c:5079 [inline] handle_mm_fault+0x1f5c/0x2c10 mm/memory.c:5233 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline] handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x24d/0x650 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __put_user_4+0x11/0x20 arch/x86/lib/putuser.S:89 __sys_socketpair+0xba/0x420 net/socket.c:1701 __do_sys_socketpair net/socket.c:1767 [inline] __se_sys_socketpair net/socket.c:1764 [inline] __x64_sys_socketpair+0x52/0x60 net/socket.c:1764 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888104de69a0 of 8 bytes by task 13703 on cpu 1: lock_vma_under_rcu+0x178/0x2d0 mm/memory.c:5402 do_user_addr_fault arch/x86/mm/fault.c:1335 [inline] handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x160/0x650 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x0000000000000000 -> 0xffff88810399e750 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13703 Comm: syz-executor.0 Not tainted 6.5.0-rc7-syzkaller-00104-g4f9e7fabf864 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ==================================================================