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BUG: KCSAN: data-race in delete_from_page_cache_batch / page_mapping

write to 0xffffea0004b62458 of 8 bytes by task 23825 on cpu 0:
 page_cache_delete_batch mm/filemap.c:327 [inline]
 delete_from_page_cache_batch+0x37b/0x810 mm/filemap.c:358
 truncate_inode_pages_range+0x482/0x10c0 mm/truncate.c:366
 truncate_inode_pages+0x20/0x30 mm/truncate.c:476
 kill_bdev fs/block_dev.c:87 [inline]
 set_blocksize+0x286/0x2a0 fs/block_dev.c:151
 sb_set_blocksize+0x2c/0xa0 fs/block_dev.c:160
 minix_fill_super+0x6b/0xdb0 fs/minix/inode.c:191
 mount_bdev+0x1e2/0x280 fs/super.c:1366
 minix_mount+0x2d/0x40 fs/minix/inode.c:686
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:592
 vfs_get_tree+0x4a/0x190 fs/super.c:1496
 do_new_mount fs/namespace.c:2875 [inline]
 path_mount+0x119d/0x1c10 fs/namespace.c:3205
 do_mount fs/namespace.c:3218 [inline]
 __do_sys_mount fs/namespace.c:3426 [inline]
 __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3403
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3403
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffea0004b62458 of 8 bytes by task 15688 on cpu 1:
 page_mapping+0x13b/0x200 mm/util.c:706
 page_evictable mm/internal.h:84 [inline]
 __pagevec_lru_add_fn+0xb1/0x550 mm/swap.c:996
 __pagevec_lru_add+0x19a/0x280 mm/swap.c:1026
 lru_cache_add+0x102/0x160 mm/swap.c:465
 add_to_page_cache_lru+0x150/0x1b0 mm/filemap.c:955
 page_cache_ra_unbounded+0x272/0x4c0 mm/readahead.c:222
 do_page_cache_ra mm/readahead.c:267 [inline]
 force_page_cache_ra+0x226/0x260 mm/readahead.c:298
 page_cache_sync_ra+0x194/0x1c0 mm/readahead.c:572
 page_cache_sync_readahead include/linux/pagemap.h:839 [inline]
 generic_file_buffered_read_get_pages+0x234/0xaf0 mm/filemap.c:2361
 generic_file_buffered_read+0x27f/0x9a0 mm/filemap.c:2481
 generic_file_read_iter+0x80/0x3d0 mm/filemap.c:2633
 blkdev_read_iter+0xb3/0xc0 fs/block_dev.c:1705
 call_read_iter include/linux/fs.h:1895 [inline]
 new_sync_read fs/read_write.c:415 [inline]
 vfs_read+0x552/0x5c0 fs/read_write.c:496
 ksys_read+0xce/0x180 fs/read_write.c:634
 __do_sys_read fs/read_write.c:644 [inline]
 __se_sys_read fs/read_write.c:642 [inline]
 __x64_sys_read+0x3e/0x50 fs/read_write.c:642
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 15688 Comm: systemd-udevd Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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