==================================================================
BUG: KCSAN: data-race in folio_mapping / page_cache_delete

write to 0xffffea0004efd018 of 8 bytes by task 30762 on cpu 1:
 page_cache_delete+0x33e/0x390 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+0x6a6/0x1000 fs/iomap/direct-io.c:583
 iomap_dio_rw+0x3c/0x80 fs/iomap/direct-io.c:690
 ext4_dio_write_iter fs/ext4/file.c:566 [inline]
 ext4_file_write_iter+0xa51/0x1210 fs/ext4/file.c:677
 do_iter_write+0x494/0x750 fs/read_write.c:855
 vfs_iter_write+0x4c/0x70 fs/read_write.c:896
 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:931
 splice_direct_to_actor+0x305/0x620 fs/splice.c:886
 do_splice_direct+0xfb/0x180 fs/splice.c:974
 do_sendfile+0x3bf/0x910 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64 fs/read_write.c:1303 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1303
 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+0x63/0xcd

read to 0xffffea0004efd018 of 8 bytes by task 30764 on cpu 0:
 folio_mapping+0x8e/0x110 mm/util.c:806
 folio_evictable mm/internal.h:136 [inline]
 lru_add_fn+0x12e/0x520 mm/swap.c:210
 folio_batch_move_lru+0x1e1/0x2a0 mm/swap.c:246
 folio_batch_add_and_move mm/swap.c:263 [inline]
 folio_add_lru+0xf1/0x140 mm/swap.c:490
 filemap_add_folio+0xf8/0x150 mm/filemap.c:948
 __filemap_get_folio+0x510/0x6d0 mm/filemap.c:1981
 pagecache_get_page+0x26/0x190 mm/folio-compat.c:104
 grab_cache_page_write_begin+0x2a/0x30 mm/folio-compat.c:116
 ext4_da_write_begin+0x2dd/0x5f0 fs/ext4/inode.c:2988
 generic_perform_write+0x1d4/0x3f0 mm/filemap.c:3738
 ext4_buffered_write_iter+0x235/0x3e0 fs/ext4/file.c:270
 ext4_file_write_iter+0x2e3/0x1210
 do_iter_write+0x494/0x750 fs/read_write.c:855
 vfs_iter_write+0x4c/0x70 fs/read_write.c:896
 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:931
 splice_direct_to_actor+0x305/0x620 fs/splice.c:886
 do_splice_direct+0xfb/0x180 fs/splice.c:974
 do_sendfile+0x3bf/0x910 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64 fs/read_write.c:1303 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1303
 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+0x63/0xcd

value changed: 0xffff8881eb29a3a0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 30764 Comm: syz-executor.3 Not tainted 6.0.0-rc6-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
==================================================================