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BUG: KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range

read to 0xffff888128f2f338 of 8 bytes by task 28409 on cpu 1:
 invalidate_inode_pages2_range+0x52/0xbb0 mm/truncate.c:695
 iomap_dio_rw+0x540/0x9a0 fs/iomap/direct-io.c:481
 ext4_dio_read_iter fs/ext4/file.c:77 [inline]
 ext4_file_read_iter fs/ext4/file.c:128 [inline]
 ext4_file_read_iter+0x2e4/0x380 fs/ext4/file.c:113
 call_read_iter include/linux/fs.h:1896 [inline]
 generic_file_splice_read+0x35c/0x500 fs/splice.c:313
 do_splice_to+0xf2/0x130 fs/splice.c:892
 splice_direct_to_actor+0x1b6/0x540 fs/splice.c:971
 do_splice_direct+0x161/0x1e0 fs/splice.c:1080
 do_sendfile+0x384/0x7f0 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1525 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0x12a/0x140 fs/read_write.c:1511
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff888128f2f338 of 8 bytes by task 28419 on cpu 0:
 __add_to_page_cache_locked+0x298/0x780 mm/filemap.c:890
 add_to_page_cache_lru+0xc4/0x260 mm/filemap.c:943
 ext4_mpage_readpages+0x329/0x1580 fs/ext4/readpage.c:247
 ext4_readpages+0x92/0xc0 fs/ext4/inode.c:3244
 read_pages+0xa2/0x2d0 mm/readahead.c:126
 __do_page_cache_readahead+0x353/0x390 mm/readahead.c:212
 ra_submit mm/internal.h:62 [inline]
 ondemand_readahead+0x35d/0x710 mm/readahead.c:492
 page_cache_sync_readahead+0x1ad/0x1e0 mm/readahead.c:527
 generic_file_buffered_read mm/filemap.c:2051 [inline]
 generic_file_read_iter+0xeb6/0x1440 mm/filemap.c:2324
 ext4_file_read_iter fs/ext4/file.c:130 [inline]
 ext4_file_read_iter+0x10c/0x380 fs/ext4/file.c:113
 call_read_iter include/linux/fs.h:1896 [inline]
 new_sync_read+0x389/0x4f0 fs/read_write.c:414
 __vfs_read+0xb1/0xc0 fs/read_write.c:427
 integrity_kernel_read+0xa1/0xe0 security/integrity/iint.c:200
 ima_calc_file_hash_tfm+0x1b5/0x260 security/integrity/ima/ima_crypto.c:360
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:389 [inline]
 ima_calc_file_hash+0x158/0xf30 security/integrity/ima/ima_crypto.c:454
 ima_collect_measurement+0x3b1/0x3e0 security/integrity/ima/ima_api.c:247
 process_measurement+0x9e3/0x1190 security/integrity/ima/ima_main.c:326
 ima_file_check+0x7e/0xb0 security/integrity/ima/ima_main.c:442
 do_last fs/namei.c:3424 [inline]
 path_openat+0xfdb/0x3580 fs/namei.c:3537
 do_filp_open+0x11e/0x1b0 fs/namei.c:3567
 do_sys_open+0x3b3/0x4f0 fs/open.c:1097
 __do_sys_open fs/open.c:1115 [inline]
 __se_sys_open fs/open.c:1110 [inline]
 __x64_sys_open+0x55/0x70 fs/open.c:1110
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 28419 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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