================================================================== BUG: KCSAN: data-race in __anon_vma_prepare / lock_vma_under_rcu write to 0xffff88811456ac40 of 8 bytes by task 19135 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:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f7/0x6c0 arch/x86/mm/fault.c:1561 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:1754 __do_sys_socketpair net/socket.c:1820 [inline] __se_sys_socketpair net/socket.c:1817 [inline] __x64_sys_socketpair+0x52/0x60 net/socket.c:1817 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 0xffff88811456ac40 of 8 bytes by task 19127 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: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: 0x0000000000000000 -> 0xffff888119c329c0 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 19127 Comm: syz-executor.1 Not tainted 6.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 ==================================================================