==================================================================
BUG: KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / kvm_mmu_notifier_invalidate_range_end

write to 0xffffc900020a2160 of 8 bytes by task 18221 on cpu 1:
 kvm_mmu_notifier_invalidate_range_end+0x63/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:448
 mn_hlist_invalidate_end mm/mmu_notifier.c:560 [inline]
 __mmu_notifier_invalidate_range_end+0x19e/0x250 mm/mmu_notifier.c:580
 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:472 [inline]
 try_to_unmap_one+0x139b/0x1790 mm/rmap.c:1705
 rmap_walk_file+0x240/0x590 mm/rmap.c:1917
 rmap_walk+0x10e/0x180 mm/rmap.c:1935
 try_to_munlock+0x8e/0xb0 mm/rmap.c:1786
 __munlock_isolated_page+0x85/0x190 mm/mlock.c:138
 __munlock_pagevec+0x314/0x770 mm/mlock.c:346
 munlock_vma_pages_range+0x52a/0x6b0 mm/mlock.c:499
 munlock_vma_pages_all mm/internal.h:332 [inline]
 __do_munmap+0x3c7/0xb20 mm/mmap.c:2820
 do_munmap mm/mmap.c:2844 [inline]
 mmap_region+0x16b/0xdd0 mm/mmap.c:1715
 do_mmap+0x717/0xc20 mm/mmap.c:1545
 do_mmap_pgoff include/linux/mm.h:2553 [inline]
 vm_mmap_pgoff+0x12f/0x190 mm/util.c:506
 ksys_mmap_pgoff+0x96/0x420 mm/mmap.c:1595
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffc900020a2160 of 8 bytes by task 12241 on cpu 0:
 kvm_mmu_notifier_invalidate_range_end+0x77/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:451
 mn_hlist_invalidate_end mm/mmu_notifier.c:560 [inline]
 __mmu_notifier_invalidate_range_end+0x19e/0x250 mm/mmu_notifier.c:580
 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:472 [inline]
 page_mkclean_one+0x408/0x410 mm/rmap.c:966
 rmap_walk_file+0x240/0x590 mm/rmap.c:1917
 rmap_walk+0x10e/0x180 mm/rmap.c:1935
 page_mkclean+0x15d/0x190 mm/rmap.c:998
 clear_page_dirty_for_io+0x16c/0x520 mm/page-writeback.c:2690
 mpage_submit_page+0x64/0x190 fs/ext4/inode.c:2053
 mpage_process_page_bufs+0x3df/0x400 fs/ext4/inode.c:2187
 mpage_prepare_extent_to_map+0x43b/0x6e0 fs/ext4/inode.c:2595
 ext4_writepages+0x5a1/0x1e10 fs/ext4/inode.c:2723
 do_writepages+0x6b/0x170 mm/page-writeback.c:2344
 __writeback_single_inode+0xaa/0x910 fs/fs-writeback.c:1452
 writeback_sb_inodes+0x4c8/0xa10 fs/fs-writeback.c:1716
 __writeback_inodes_wb+0xe9/0x1b0 fs/fs-writeback.c:1785
 wb_writeback+0x557/0x6a0 fs/fs-writeback.c:1894
 wb_check_old_data_flush fs/fs-writeback.c:1996 [inline]
 wb_do_writeback fs/fs-writeback.c:2049 [inline]
 wb_workfn+0x796/0x970 fs/fs-writeback.c:2078
 process_one_work+0x424/0x930 kernel/workqueue.c:2268
 worker_thread+0x9a/0x7e0 kernel/workqueue.c:2414
 kthread+0x203/0x230 kernel/kthread.c:268
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12241 Comm: kworker/u4:6 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
==================================================================