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BUG: KCSAN: data-race in __delete_from_page_cache / folio_mapping

write to 0xffffea0004c22f18 of 8 bytes by task 3494 on cpu 1:
 page_cache_delete mm/filemap.c:144 [inline]
 __delete_from_page_cache+0x1b7/0x2c0 mm/filemap.c:231
 delete_from_page_cache+0x82/0x140 mm/filemap.c:265
 truncate_inode_page mm/truncate.c:219 [inline]
 truncate_inode_pages_range+0x8d7/0xa00 mm/truncate.c:397
 truncate_inode_pages+0x20/0x30 mm/truncate.c:425
 kill_bdev block/bdev.c:78 [inline]
 set_blocksize+0x24e/0x270 block/bdev.c:158
 sb_set_blocksize+0x2c/0xa0 block/bdev.c:167
 ext4_fill_super+0x2287/0x78f0 fs/ext4/super.c:4334
 mount_bdev+0x1e8/0x290 fs/super.c:1370
 ext4_mount+0x2d/0x40 fs/ext4/super.c:6522
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1500
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x11cf/0x1c40 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffea0004c22f18 of 8 bytes by task 7 on cpu 0:
 folio_mapping+0x92/0x120 mm/util.c:722
 folio_evictable mm/internal.h:112 [inline]
 __pagevec_lru_add_fn+0x81/0x380 mm/swap.c:1042
 __pagevec_lru_add+0x1c3/0x270 mm/swap.c:1070
 lru_add_drain_cpu+0x6a/0x260 mm/swap.c:612
 lru_add_and_bh_lrus_drain mm/swap.c:729 [inline]
 lru_add_drain_per_cpu+0x21/0x60 mm/swap.c:748
 process_one_work+0x3fc/0x980 kernel/workqueue.c:2298
 process_scheduled_works kernel/workqueue.c:2361 [inline]
 worker_thread+0x79f/0xa70 kernel/workqueue.c:2450
 kthread+0x2c7/0x2e0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

value changed: 0xffff88810047e5b8 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: mm_percpu_wq lru_add_drain_per_cpu
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