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

write to 0xffffea0004ea2f98 of 8 bytes by task 28055 on cpu 0:
 page_cache_delete+0x33e/0x390 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:75 [inline]
 set_blocksize+0x24e/0x270 block/bdev.c:151
 sb_set_blocksize block/bdev.c:160 [inline]
 sb_min_blocksize+0x92/0x110 block/bdev.c:176
 __ext4_fill_super fs/ext4/super.c:4346 [inline]
 ext4_fill_super+0x3b7/0x5010 fs/ext4/super.c:5517
 get_tree_bdev+0x2b4/0x3b0 fs/super.c:1323
 ext4_get_tree+0x18/0x20 fs/ext4/super.c:5547
 vfs_get_tree+0x49/0x190 fs/super.c:1530
 do_new_mount+0x200/0x650 fs/namespace.c:3040
 path_mount+0x4ad/0xbb0 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+0x63/0xcd

read to 0xffffea0004ea2f98 of 8 bytes by task 1854 on cpu 1:
 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
 lru_add_drain_cpu+0x73/0x250 mm/swap.c:626
 lru_add_drain+0x21/0x60 mm/swap.c:730
 __pagevec_release+0x3a/0x70 mm/swap.c:1029
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 truncate_inode_pages_range+0x442/0xae0 mm/truncate.c:373
 truncate_inode_pages+0x20/0x30 mm/truncate.c:452
 kill_bdev block/bdev.c:75 [inline]
 blkdev_flush_mapping+0xc0/0x1c0 block/bdev.c:661
 blkdev_put_whole block/bdev.c:692 [inline]
 blkdev_put+0x32d/0x420 block/bdev.c:952
 kill_block_super+0x7b/0x90 fs/super.c:1430
 deactivate_locked_super+0x6a/0xb0 fs/super.c:332
 deactivate_super+0x85/0x90 fs/super.c:363
 cleanup_mnt+0x2b6/0x320 fs/namespace.c:1186
 __cleanup_mnt+0x15/0x20 fs/namespace.c:1193
 task_work_run+0x8e/0x110 kernel/task_work.c:177
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x124/0x130 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff8881023b25c8 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1854 Comm: syz-executor.5 Not tainted 6.0.0-rc3-syzkaller-00328-g42cf58c272ee-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
==================================================================
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop5): unmounting filesystem.