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BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea00052921d8 of 8 bytes by task 25962 on cpu 0:
 page_cache_delete mm/filemap.c:152 [inline]
 __filemap_remove_folio+0x1ac/0x2c0 mm/filemap.c:232
 invalidate_complete_folio2 mm/truncate.c:575 [inline]
 invalidate_inode_pages2_range+0x3f8/0x720 mm/truncate.c:662
 kiocb_invalidate_pages+0x1b1/0x1e0 mm/filemap.c:2714
 __iomap_dio_rw+0x585/0x1090 fs/iomap/direct-io.c:639
 iomap_dio_rw+0x40/0x90 fs/iomap/direct-io.c:749
 ext4_dio_write_iter fs/ext4/file.c:577 [inline]
 ext4_file_write_iter+0xaa4/0xe30 fs/ext4/file.c:696
 call_write_iter include/linux/fs.h:2108 [inline]
 iter_file_splice_write+0x5e6/0x970 fs/splice.c:743
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x16c/0x2c0 fs/splice.c:1164
 splice_direct_to_actor+0x305/0x670 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0xd7/0x150 fs/splice.c:1233
 do_sendfile+0x3b9/0x970 fs/read_write.c:1295
 __do_sys_sendfile64 fs/read_write.c:1362 [inline]
 __se_sys_sendfile64 fs/read_write.c:1348 [inline]
 __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1348
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

read to 0xffffea00052921d8 of 8 bytes by task 25957 on cpu 1:
 folio_mapping+0x96/0x110 mm/util.c:799
 folio_evictable mm/internal.h:256 [inline]
 lru_add_fn+0x8d/0x430 mm/swap.c:197
 folio_batch_move_lru+0x20c/0x2c0 mm/swap.c:233
 folio_batch_add_and_move mm/swap.c:249 [inline]
 folio_add_lru+0xd4/0x130 mm/swap.c:532
 filemap_add_folio+0x103/0x160 mm/filemap.c:962
 page_cache_ra_unbounded+0x15f/0x2e0 mm/readahead.c:250
 do_page_cache_ra mm/readahead.c:299 [inline]
 page_cache_ra_order mm/readahead.c:539 [inline]
 ondemand_readahead+0x549/0x6c0 mm/readahead.c:661
 page_cache_sync_ra+0xe0/0xf0 mm/readahead.c:688
 page_cache_sync_readahead include/linux/pagemap.h:1300 [inline]
 filemap_get_pages+0x252/0xfb0 mm/filemap.c:2505
 filemap_splice_read+0x360/0x920 mm/filemap.c:2870
 ext4_file_splice_read+0x95/0xc0 fs/ext4/file.c:158
 do_splice_read fs/splice.c:985 [inline]
 splice_direct_to_actor+0x26c/0x670 fs/splice.c:1089
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0xd7/0x150 fs/splice.c:1233
 do_sendfile+0x3b9/0x970 fs/read_write.c:1295
 __do_sys_sendfile64 fs/read_write.c:1362 [inline]
 __se_sys_sendfile64 fs/read_write.c:1348 [inline]
 __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1348
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

value changed: 0xffff8881069174d0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 25957 Comm: syz-executor.0 Tainted: G        W          6.9.0-rc2-syzkaller-00193-gc88b9b4cde17 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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