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BUG: KCSAN: data-race in folio_mapping / page_cache_delete

write to 0xffffea00048000d8 of 8 bytes by task 1907 on cpu 1:
 page_cache_delete+0x30d/0x360 mm/filemap.c:143
 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223
 filemap_remove_folio+0x69/0x120 mm/filemap.c:255
 truncate_inode_folio+0x204/0x210 mm/truncate.c:196
 shmem_undo_range+0x3d2/0x1160 mm/shmem.c:952
 shmem_truncate_range mm/shmem.c:1044 [inline]
 shmem_evict_inode+0x141/0x570 mm/shmem.c:1133
 evict+0x1aa/0x410 fs/inode.c:664
 iput_final fs/inode.c:1744 [inline]
 iput+0x3f9/0x580 fs/inode.c:1770
 dentry_unlink_inode+0x22a/0x240 fs/dcache.c:401
 __dentry_kill+0x28b/0x450 fs/dcache.c:607
 dentry_kill+0x8d/0x1e0
 dput+0x11e/0x1f0 fs/dcache.c:913
 do_renameat2+0x6f2/0x9f0 fs/namei.c:4828
 __do_sys_rename fs/namei.c:4872 [inline]
 __se_sys_rename fs/namei.c:4870 [inline]
 __x64_sys_rename+0x58/0x60 fs/namei.c:4870
 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 0xffffea00048000d8 of 8 bytes by task 7452 on cpu 0:
 folio_mapping+0x92/0x120 mm/util.c:773
 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+0x112/0x160 mm/swap.c:467
 filemap_add_folio+0xf8/0x150 mm/filemap.c:974
 __filemap_get_folio+0x4bd/0x680 mm/filemap.c:2003
 pagecache_get_page+0x26/0x190 mm/folio-compat.c:126
 grab_cache_page_write_begin+0x3f/0x50 mm/folio-compat.c:140
 ext4_da_write_begin+0x271/0x530 fs/ext4/inode.c:2967
 generic_perform_write+0x1d6/0x3f0 mm/filemap.c:3787
 ext4_buffered_write_iter+0x199/0x280 fs/ext4/file.c:270
 ext4_file_write_iter+0x211/0xdf0
 call_write_iter include/linux/fs.h:2050 [inline]
 new_sync_write fs/read_write.c:504 [inline]
 vfs_write+0x71c/0x890 fs/read_write.c:591
 ksys_write+0xe8/0x1a0 fs/read_write.c:644
 __do_sys_write fs/read_write.c:656 [inline]
 __se_sys_write fs/read_write.c:653 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:653
 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: 0xffff88813c23e300 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7452 Comm: syz-executor.4 Not tainted 5.18.0-rc5-syzkaller-00006-g9050ba3a61a4-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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