EXT4-fs error (device loop2): ext4_quota_enable:6405: comm syz-executor.2: Bad quota inode # 37
EXT4-fs warning (device loop2): ext4_enable_quotas:6445: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
EXT4-fs (loop2): mount failed
loop2: detected capacity change from 0 to 264192
==================================================================
BUG: KCSAN: data-race in __add_to_page_cache_locked / truncate_inode_pages_range

write to 0xffff8881014ce5f0 of 8 bytes by task 21155 on cpu 0:
 __add_to_page_cache_locked+0x298/0x520 mm/filemap.c:887
 add_to_page_cache_lru+0xa0/0x1b0 mm/filemap.c:940
 page_cache_ra_unbounded+0x272/0x400 mm/readahead.c:222
 do_page_cache_ra mm/readahead.c:267 [inline]
 force_page_cache_ra+0x236/0x270 mm/readahead.c:298
 page_cache_sync_ra+0xb5/0xd0 mm/readahead.c:572
 page_cache_sync_readahead include/linux/pagemap.h:840 [inline]
 filemap_get_pages mm/filemap.c:2375 [inline]
 filemap_read+0x380/0x1210 mm/filemap.c:2458
 generic_file_read_iter+0x84/0x3e0 mm/filemap.c:2609
 blkdev_read_iter+0xb3/0xc0 fs/block_dev.c:1727
 call_read_iter include/linux/fs.h:1971 [inline]
 new_sync_read fs/read_write.c:415 [inline]
 vfs_read+0x565/0x5d0 fs/read_write.c:496
 ksys_read+0xce/0x180 fs/read_write.c:634
 __do_sys_read fs/read_write.c:644 [inline]
 __se_sys_read fs/read_write.c:642 [inline]
 __x64_sys_read+0x3e/0x50 fs/read_write.c:642
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881014ce5f0 of 8 bytes by task 21143 on cpu 1:
 truncate_inode_pages_range+0x40/0xac0 mm/truncate.c:298
 truncate_inode_pages+0x20/0x30 mm/truncate.c:428
 kill_bdev fs/block_dev.c:86 [inline]
 set_blocksize+0x286/0x2a0 fs/block_dev.c:166
 sb_set_blocksize+0x2c/0xa0 fs/block_dev.c:175
 ext4_fill_super+0x20e5/0x7f90 fs/ext4/super.c:4455
 mount_bdev+0x1e8/0x290 fs/super.c:1367
 ext4_mount+0x2d/0x40 fs/ext4/super.c:6605
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:592
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1497
 do_new_mount fs/namespace.c:2903 [inline]
 path_mount+0x11d6/0x1ce0 fs/namespace.c:3233
 do_mount fs/namespace.c:3246 [inline]
 __do_sys_mount fs/namespace.c:3454 [inline]
 __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3431
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3431
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21143 Comm: syz-executor.2 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
EXT4-fs: failed to create workqueue
EXT4-fs (loop2): mount failed