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

write to 0xffffea0004159f98 of 8 bytes by task 21989 on cpu 0:
 page_cache_delete_batch+0x1ab/0x4b0 mm/filemap.c:308
 delete_from_page_cache_batch+0x190/0x2a0 mm/filemap.c:334
 truncate_inode_pages_range+0x3ca/0xae0 mm/truncate.c:370
 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+0x1a04/0x5a00 fs/ext4/super.c:4822
 ext4_fill_super+0x10b/0x2f0 fs/ext4/super.c:5587
 get_tree_bdev+0x2c2/0x3d0 fs/super.c:1292
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1497
 do_new_mount fs/namespace.c:3039 [inline]
 path_mount+0x11cf/0x1c40 fs/namespace.c:3369
 do_mount fs/namespace.c:3382 [inline]
 __do_sys_mount fs/namespace.c:3590 [inline]
 __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3567
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3567
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffea0004159f98 of 8 bytes by task 21990 on cpu 1:
 folio_mapping+0x92/0x120 mm/util.c:766
 folio_evictable mm/internal.h:121 [inline]
 __pagevec_lru_add_fn+0x134/0x520 mm/swap.c:1022
 __pagevec_lru_add+0x1c6/0x320 mm/swap.c:1058
 folio_add_lru+0x115/0x160 mm/swap.c:467
 lru_cache_add+0x3b/0xe0 mm/folio-compat.c:109
 lru_cache_add_inactive_or_unevictable+0x44/0x60 mm/swap.c:488
 wp_page_copy+0x7be/0x1570 mm/memory.c:3076
 do_wp_page+0x53f/0xd50
 handle_pte_fault mm/memory.c:4641 [inline]
 __handle_mm_fault mm/memory.c:4759 [inline]
 handle_mm_fault+0x7f8/0xca0 mm/memory.c:4857
 do_user_addr_fault+0x617/0xb90 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0x91/0x290 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x1e/0x30

value changed: 0xffff888100405530 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21990 Comm: udevd Not tainted 5.17.0-syzkaller-11406-gf82da161ea75-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================