loop1: detected capacity change from 0 to 512
==================================================================
BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping

write to 0xffffea00041c8b18 of 8 bytes by task 29998 on cpu 0:
 page_cache_delete_batch mm/filemap.c:310 [inline]
 delete_from_page_cache_batch+0x320/0x760 mm/filemap.c:336
 truncate_inode_pages_range+0x1bd/0x6a0 mm/truncate.c:368
 truncate_inode_pages+0x24/0x30 mm/truncate.c:448
 kill_bdev block/bdev.c:76 [inline]
 set_blocksize+0x26c/0x290 block/bdev.c:152
 sb_set_blocksize block/bdev.c:161 [inline]
 sb_min_blocksize+0x83/0x110 block/bdev.c:177
 ext4_load_super fs/ext4/super.c:5030 [inline]
 __ext4_fill_super fs/ext4/super.c:5227 [inline]
 ext4_fill_super+0x39a/0x3940 fs/ext4/super.c:5703
 get_tree_bdev+0x272/0x300 fs/super.c:1577
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5735
 vfs_get_tree+0x51/0x1b0 fs/super.c:1750
 do_new_mount+0x203/0x660 fs/namespace.c:3335
 path_mount+0x496/0xb30 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffea00041c8b18 of 8 bytes by task 30003 on cpu 1:
 folio_mapping+0x92/0x110 mm/util.c:772
 folio_evictable mm/internal.h:162 [inline]
 lru_add_fn+0x8d/0x440 mm/swap.c:181
 folio_batch_move_lru+0x21e/0x2f0 mm/swap.c:217
 lru_add_drain_cpu+0x77/0x270 mm/swap.c:652
 lru_add_drain mm/swap.c:752 [inline]
 __folio_batch_release+0x5f/0xe0 mm/swap.c:1059
 folio_batch_release include/linux/pagevec.h:83 [inline]
 truncate_inode_pages_range+0x22e/0x6a0 mm/truncate.c:371
 truncate_inode_pages+0x24/0x30 mm/truncate.c:448
 kill_bdev block/bdev.c:76 [inline]
 set_blocksize+0x26c/0x290 block/bdev.c:152
 sb_set_blocksize block/bdev.c:161 [inline]
 sb_min_blocksize+0x83/0x110 block/bdev.c:177
 ext4_load_super fs/ext4/super.c:5030 [inline]
 __ext4_fill_super fs/ext4/super.c:5227 [inline]
 ext4_fill_super+0x39a/0x3940 fs/ext4/super.c:5703
 get_tree_bdev+0x272/0x300 fs/super.c:1577
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5735
 vfs_get_tree+0x51/0x1b0 fs/super.c:1750
 do_new_mount+0x203/0x660 fs/namespace.c:3335
 path_mount+0x496/0xb30 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff888100481e18 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 30003 Comm: syz-executor.1 Not tainted 6.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
==================================================================
EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
EXT4-fs (loop1): feature flags set on rev 0 fs, running e2fsck is recommended
[EXT4 FS bs=4096, gc=1, bpg=3008, ipg=32, mo=4000e018, mo2=0000]
EXT4-fs (loop1): 1 truncate cleaned up