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BUG: KCSAN: data-race in next_uptodate_page / simple_write_end

write to 0xffff88810a104b30 of 8 bytes by task 32533 on cpu 0:
 i_size_write include/linux/fs.h:888 [inline]
 simple_write_end+0x22d/0x410 fs/libfs.c:614
 generic_perform_write+0x253/0x3d0 mm/filemap.c:3937
 __generic_file_write_iter+0xe6/0x290 mm/filemap.c:4054
 generic_file_write_iter+0x7d/0x1c0 mm/filemap.c:4086
 call_write_iter include/linux/fs.h:1851 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x463/0x760 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 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 0xffff88810a104b30 of 8 bytes by task 32541 on cpu 1:
 i_size_read include/linux/fs.h:866 [inline]
 next_uptodate_page+0x47b/0x560 mm/filemap.c:3457
 next_map_page mm/filemap.c:3482 [inline]
 filemap_map_pages+0x722/0x830 mm/filemap.c:3554
 do_fault_around mm/memory.c:4475 [inline]
 do_read_fault mm/memory.c:4501 [inline]
 do_fault mm/memory.c:4635 [inline]
 handle_pte_fault mm/memory.c:4923 [inline]
 __handle_mm_fault mm/memory.c:5065 [inline]
 handle_mm_fault+0xfc3/0x21d0 mm/memory.c:5211
 faultin_page mm/gup.c:925 [inline]
 __get_user_pages+0x363/0xc30 mm/gup.c:1147
 populate_vma_page_range mm/gup.c:1543 [inline]
 __mm_populate+0x23a/0x360 mm/gup.c:1652
 mm_populate include/linux/mm.h:3026 [inline]
 vm_mmap_pgoff+0x174/0x210 mm/util.c:547
 ksys_mmap_pgoff+0x2ac/0x320 mm/mmap.c:1410
 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

value changed: 0x0000000000f9b000 -> 0x0000000000f9e000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 32541 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-05127-g5c7ecada25d2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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