================================================================== BUG: KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / kvm_mmu_notifier_invalidate_range_start write to 0xffffc9000a51e190 of 8 bytes by task 13195 on cpu 0: kvm_mmu_notifier_invalidate_range_start+0x61/0x1c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:429 mn_hlist_invalidate_range_start mm/mmu_notifier.c:493 [inline] __mmu_notifier_invalidate_range_start+0x23a/0x390 mm/mmu_notifier.c:525 mmu_notifier_invalidate_range_start include/linux/mmu_notifier.h:447 [inline] wp_page_copy+0x2b8/0x1620 mm/memory.c:2686 do_wp_page+0x9c3/0xd40 mm/memory.c:2981 handle_pte_fault mm/memory.c:4232 [inline] __handle_mm_fault mm/memory.c:4346 [inline] handle_mm_fault+0x1658/0x18a0 mm/memory.c:4383 do_user_addr_fault+0x393/0x810 arch/x86/mm/fault.c:1295 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xb8/0x330 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 stac net/socket.c:2588 [inline] ____sys_recvmsg+0x1fe/0x2e0 net/socket.c:2588 ___sys_recvmsg net/socket.c:2617 [inline] do_recvmmsg+0x35c/0xa30 net/socket.c:2715 __sys_recvmmsg net/socket.c:2794 [inline] __do_sys_recvmmsg net/socket.c:2817 [inline] __se_sys_recvmmsg net/socket.c:2810 [inline] __x64_sys_recvmmsg+0xcc/0x150 net/socket.c:2810 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffc9000a51e190 of 8 bytes by task 13188 on cpu 1: kvm_mmu_notifier_invalidate_range_end+0x6c/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:463 mn_hlist_invalidate_end mm/mmu_notifier.c:560 [inline] __mmu_notifier_invalidate_range_end+0x18e/0x210 mm/mmu_notifier.c:580 mmu_notifier_invalidate_range_only_end include/linux/mmu_notifier.h:480 [inline] wp_page_copy+0x9ac/0x1620 mm/memory.c:2763 do_wp_page+0x9c3/0xd40 mm/memory.c:2981 handle_pte_fault mm/memory.c:4232 [inline] __handle_mm_fault mm/memory.c:4346 [inline] handle_mm_fault+0x1658/0x18a0 mm/memory.c:4383 do_user_addr_fault+0x393/0x810 arch/x86/mm/fault.c:1295 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xb8/0x330 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 stac net/socket.c:2588 [inline] ____sys_recvmsg+0x1fe/0x2e0 net/socket.c:2588 ___sys_recvmsg net/socket.c:2617 [inline] do_recvmmsg+0x35c/0xa30 net/socket.c:2715 __sys_recvmmsg net/socket.c:2794 [inline] __do_sys_recvmmsg net/socket.c:2817 [inline] __se_sys_recvmmsg net/socket.c:2810 [inline] __x64_sys_recvmmsg+0xcc/0x150 net/socket.c:2810 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13188 Comm: syz-executor.0 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================