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BUG: KCSAN: data-race in __delete_from_page_cache / page_mapping

write to 0xffffea000440f2d8 of 8 bytes by task 29305 on cpu 1:
 page_cache_delete mm/filemap.c:140 [inline]
 __delete_from_page_cache+0x23c/0x390 mm/filemap.c:238
 invalidate_complete_page2+0x126/0x2a0 mm/truncate.c:651
 invalidate_inode_pages2_range+0x465/0x780 mm/truncate.c:744
 iomap_dio_complete+0x20c/0x380 fs/iomap/direct-io.c:113
 iomap_dio_rw+0x874/0x8c0 fs/iomap/direct-io.c:572
 ext4_dio_write_iter fs/ext4/file.c:545 [inline]
 ext4_file_write_iter+0xda4/0x1010 fs/ext4/file.c:653
 call_write_iter include/linux/fs.h:1907 [inline]
 do_iter_readv_writev+0x321/0x3c0 fs/read_write.c:694
 do_iter_write+0x10e/0x470 fs/read_write.c:999
 vfs_iter_write+0x4c/0x70 fs/read_write.c:1040
 iter_file_splice_write+0x41a/0x770 fs/splice.c:750
 do_splice_from fs/splice.c:846 [inline]
 direct_splice_actor+0x95/0x160 fs/splice.c:1016
 splice_direct_to_actor+0x365/0x660 fs/splice.c:971
 do_splice_direct+0xf2/0x170 fs/splice.c:1059
 do_sendfile+0x562/0xb10 fs/read_write.c:1521
 __do_sys_sendfile64 fs/read_write.c:1582 [inline]
 __se_sys_sendfile64 fs/read_write.c:1568 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1568
 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffea000440f2d8 of 8 bytes by task 29318 on cpu 0:
 page_mapping+0x13b/0x200 mm/util.c:693
 page_evictable mm/internal.h:86 [inline]
 __pagevec_lru_add_fn+0xb6/0x570 mm/swap.c:1007
 pagevec_lru_move_fn+0xff/0x190 mm/swap.c:227
 __pagevec_lru_add mm/swap.c:1029 [inline]
 lru_add_drain_cpu+0x75/0x2d0 mm/swap.c:631
 lru_add_drain mm/swap.c:734 [inline]
 __pagevec_release+0x4b/0xc0 mm/swap.c:928
 pagevec_release include/linux/pagevec.h:88 [inline]
 invalidate_inode_pages2_range+0x69f/0x780 mm/truncate.c:752
 iomap_dio_rw+0x3ff/0x8c0 fs/iomap/direct-io.c:484
 ext4_dio_write_iter fs/ext4/file.c:545 [inline]
 ext4_file_write_iter+0xda4/0x1010 fs/ext4/file.c:653
 call_write_iter include/linux/fs.h:1907 [inline]
 do_iter_readv_writev+0x321/0x3c0 fs/read_write.c:694
 do_iter_write+0x10e/0x470 fs/read_write.c:999
 vfs_iter_write+0x4c/0x70 fs/read_write.c:1040
 iter_file_splice_write+0x41a/0x770 fs/splice.c:750
 do_splice_from fs/splice.c:846 [inline]
 direct_splice_actor+0x95/0x160 fs/splice.c:1016
 splice_direct_to_actor+0x365/0x660 fs/splice.c:971
 do_splice_direct+0xf2/0x170 fs/splice.c:1059
 do_sendfile+0x562/0xb10 fs/read_write.c:1521
 __do_sys_sendfile64 fs/read_write.c:1582 [inline]
 __se_sys_sendfile64 fs/read_write.c:1568 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1568
 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 29318 Comm: syz-executor.2 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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