================================================================== BUG: KCSAN: data-race in __anon_vma_prepare / handle_mm_fault write to 0xffff88815ad2aee0 of 8 bytes by task 2278 on cpu 1: __anon_vma_prepare+0x147/0x2c0 mm/rmap.c:214 anon_vma_prepare include/linux/rmap.h:164 [inline] do_anonymous_page mm/memory.c:4428 [inline] do_pte_missing mm/memory.c:3876 [inline] handle_pte_fault mm/memory.c:5298 [inline] __handle_mm_fault mm/memory.c:5439 [inline] handle_mm_fault+0x1aea/0x27e0 mm/memory.c:5604 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f5/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 __put_user_4+0x11/0x20 arch/x86/lib/putuser.S:86 __do_sys_getresuid kernel/sys.c:757 [inline] __se_sys_getresuid+0xbf/0x140 kernel/sys.c:747 __x64_sys_getresuid+0x43/0x50 kernel/sys.c:747 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 read to 0xffff88815ad2aee0 of 8 bytes by task 2277 on cpu 0: anon_vma_prepare include/linux/rmap.h:161 [inline] do_anonymous_page mm/memory.c:4428 [inline] do_pte_missing mm/memory.c:3876 [inline] handle_pte_fault mm/memory.c:5298 [inline] __handle_mm_fault mm/memory.c:5439 [inline] handle_mm_fault+0xcc4/0x27e0 mm/memory.c:5604 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f5/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0x0000000000000000 -> 0xffff888155d21f08 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2277 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-13161-gbfa8f18691ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 ==================================================================