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BUG: KCSAN: data-race in __filemap_add_folio / nr_blockdev_pages

write to 0xffff88810135a638 of 8 bytes by task 16276 on cpu 0:
 __filemap_add_folio+0x256/0x4d0 mm/filemap.c:946
 filemap_add_folio+0x6b/0x150 mm/filemap.c:999
 add_to_page_cache_lru+0x4e/0x70 mm/folio-compat.c:115
 do_read_cache_page+0x115/0x680 mm/filemap.c:3453
 read_cache_page+0x36/0x40 mm/filemap.c:3567
 read_mapping_page include/linux/pagemap.h:651 [inline]
 read_part_sector+0x78/0x1b0 block/partitions/core.c:728
 read_lba+0x15b/0x280 block/partitions/efi.c:248
 find_valid_gpt block/partitions/efi.c:603 [inline]
 efi_partition+0x238/0x1240 block/partitions/efi.c:720
 check_partition block/partitions/core.c:149 [inline]
 blk_add_partitions block/partitions/core.c:613 [inline]
 bdev_disk_changed+0x501/0xe50 block/partitions/core.c:699
 blkdev_get_whole block/bdev.c:684 [inline]
 blkdev_get_by_dev+0x6ba/0xc60 block/bdev.c:826
 blkdev_open+0xb3/0x140 block/fops.c:501
 do_dentry_open+0x52c/0x860 fs/open.c:822
 vfs_open+0x43/0x50 fs/open.c:957
 do_open fs/namei.c:3426 [inline]
 path_openat+0x17b8/0x1eb0 fs/namei.c:3559
 do_filp_open+0x105/0x220 fs/namei.c:3586
 do_sys_openat2+0xb5/0x2b0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_openat fs/open.c:1244 [inline]
 __se_sys_openat fs/open.c:1239 [inline]
 __x64_sys_openat+0xef/0x110 fs/open.c:1239
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88810135a638 of 8 bytes by task 1911 on cpu 1:
 nr_blockdev_pages+0x7f/0xd0 block/bdev.c:522
 si_meminfo+0x3a/0x60 mm/page_alloc.c:5778
 update_defense_level+0x46/0x560 net/netfilter/ipvs/ip_vs_ctl.c:102
 defense_work_handler+0x1b/0x80 net/netfilter/ipvs/ip_vs_ctl.c:236
 process_one_work+0x3fc/0x980 kernel/workqueue.c:2298
 worker_thread+0x616/0xa70 kernel/workqueue.c:2445
 kthread+0x2c7/0x2e0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

value changed: 0x0000000000000000 -> 0x0000000000000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1911 Comm: kworker/1:4 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_long defense_work_handler
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