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BUG: KCSAN: data-race in folio_mapping / page_cache_delete

write to 0xffffea00048c2cd8 of 8 bytes by task 19234 on cpu 0:
 page_cache_delete+0x30d/0x360 mm/filemap.c:143
 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223
 invalidate_complete_folio2 mm/truncate.c:594 [inline]
 invalidate_inode_pages2_range+0x450/0x670 mm/truncate.c:682
 __iomap_dio_rw+0x5e2/0xf80 fs/iomap/direct-io.c:572
 iomap_dio_rw+0x38/0x80 fs/iomap/direct-io.c:681
 ext4_dio_write_iter fs/ext4/file.c:566 [inline]
 ext4_file_write_iter+0x7df/0xdf0 fs/ext4/file.c:677
 do_iter_readv_writev+0x27b/0x300
 do_iter_write+0x16f/0x5c0 fs/read_write.c:852
 vfs_iter_write+0x4c/0x70 fs/read_write.c:893
 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x660 fs/splice.c:891
 do_splice_direct+0xfb/0x180 fs/splice.c:979
 do_sendfile+0x3ad/0x900 fs/read_write.c:1246
 __do_sys_sendfile64 fs/read_write.c:1311 [inline]
 __se_sys_sendfile64 fs/read_write.c:1297 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffea00048c2cd8 of 8 bytes by task 19246 on cpu 1:
 folio_mapping+0x92/0x120 mm/util.c:766
 folio_evictable mm/internal.h:121 [inline]
 __pagevec_lru_add_fn+0x134/0x520 mm/swap.c:1024
 __pagevec_lru_add+0x1c6/0x320 mm/swap.c:1060
 folio_add_lru+0x10d/0x150 mm/swap.c:467
 filemap_add_folio+0xf8/0x150 mm/filemap.c:974
 page_cache_ra_unbounded+0x19e/0x2e0 mm/readahead.c:243
 do_page_cache_ra+0xa7/0xc0 mm/readahead.c:291
 ondemand_readahead+0x65d/0x6e0 mm/readahead.c:638
 page_cache_sync_ra+0x1a4/0x1b0 mm/readahead.c:692
 page_cache_sync_readahead include/linux/pagemap.h:1185 [inline]
 filemap_get_pages mm/filemap.c:2598 [inline]
 filemap_read+0x3e5/0x1400 mm/filemap.c:2685
 generic_file_read_iter+0x72/0x320 mm/filemap.c:2831
 call_read_iter include/linux/fs.h:2044 [inline]
 generic_file_splice_read+0x1de/0x2c0 fs/splice.c:311
 do_splice_to fs/splice.c:796 [inline]
 splice_direct_to_actor+0x2ac/0x660 fs/splice.c:870
 do_splice_direct+0xfb/0x180 fs/splice.c:979
 do_sendfile+0x3ad/0x900 fs/read_write.c:1246
 __do_sys_sendfile64 fs/read_write.c:1311 [inline]
 __se_sys_sendfile64 fs/read_write.c:1297 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0xffff88813f880c80 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19246 Comm: syz-executor.2 Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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