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

write to 0xffffea0004913b18 of 8 bytes by task 3263 on cpu 0:
 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
 truncate_inode_pages_range+0x832/0xae0 mm/truncate.c:426
 truncate_inode_pages+0x20/0x30 mm/truncate.c:452
 kill_bdev block/bdev.c:77 [inline]
 set_blocksize+0x24e/0x270 block/bdev.c:153
 sb_set_blocksize+0x2c/0xa0 block/bdev.c:162
 __ext4_fill_super fs/ext4/super.c:4829 [inline]
 ext4_fill_super+0x16f7/0x3a90 fs/ext4/super.c:5603
 get_tree_bdev+0x2b4/0x3b0 fs/super.c:1292
 vfs_get_tree+0x49/0x190 fs/super.c:1497
 do_new_mount+0x200/0x650 fs/namespace.c:3040
 path_mount+0x4b1/0xb60 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x281/0x2d0 fs/namespace.c:3568
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3568
 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 0xffffea0004913b18 of 8 bytes by task 3255 on cpu 1:
 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
 lru_add_drain_cpu+0x6a/0x260 mm/swap.c:601
 lru_add_drain+0x21/0x60 mm/swap.c:706
 __pagevec_release+0x3a/0x70 mm/swap.c:997
 pagevec_release include/linux/pagevec.h:82 [inline]
 __filemap_fdatawait_range+0x1f1/0x260 mm/filemap.c:527
 file_write_and_wait_range+0x11e/0x170 mm/filemap.c:783
 ext4_sync_file+0xad/0x560 fs/ext4/fsync.c:151
 vfs_fsync_range+0x107/0x120 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2732 [inline]
 ext4_buffered_write_iter+0x23f/0x280 fs/ext4/file.c:277
 ext4_file_write_iter+0x211/0xdf0
 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:1305 [inline]
 __se_sys_sendfile64 fs/read_write.c:1297 [inline]
 __x64_sys_sendfile64+0xb9/0x150 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: 0xffff888100425b80 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3255 Comm: syz-executor.5 Not tainted 5.18.0-rc5-syzkaller-00128-g64267926e01b-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================