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BUG: KCSAN: data-race in write_cache_pages / write_cache_pages

write to 0xffff888100633138 of 8 bytes by task 27311 on cpu 1:
 write_cache_pages+0x6f3/0x740 mm/page-writeback.c:2527
 do_writepages+0x20f/0x340 mm/page-writeback.c:2558
 filemap_fdatawrite_wbc+0xdb/0xf0 mm/filemap.c:387
 __filemap_fdatawrite_range mm/filemap.c:420 [inline]
 filemap_write_and_wait_range+0xe0/0x210 mm/filemap.c:675
 filemap_write_and_wait include/linux/pagemap.h:64 [inline]
 sync_blockdev+0x42/0x50 block/bdev.c:198
 dquot_quota_sync+0xd9/0x340 fs/quota/dquot.c:757
 quota_sync_one+0x83/0xb0 fs/quota/quota.c:60
 iterate_supers+0xa0/0x130 fs/super.c:971
 quota_sync_all fs/quota/quota.c:69 [inline]
 __do_sys_quotactl fs/quota/quota.c:938 [inline]
 __se_sys_quotactl+0x2d3/0x660 fs/quota/quota.c:917
 __x64_sys_quotactl+0x55/0x60 fs/quota/quota.c:917
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

write to 0xffff888100633138 of 8 bytes by task 27308 on cpu 0:
 write_cache_pages+0x6f3/0x740 mm/page-writeback.c:2527
 do_writepages+0x20f/0x340 mm/page-writeback.c:2558
 filemap_fdatawrite_wbc+0xdb/0xf0 mm/filemap.c:387
 __filemap_fdatawrite_range mm/filemap.c:420 [inline]
 filemap_write_and_wait_range+0xe0/0x210 mm/filemap.c:675
 filemap_write_and_wait include/linux/pagemap.h:64 [inline]
 sync_blockdev+0x42/0x50 block/bdev.c:198
 dquot_quota_sync+0xd9/0x340 fs/quota/dquot.c:757
 quota_sync_one+0x83/0xb0 fs/quota/quota.c:60
 iterate_supers+0xa0/0x130 fs/super.c:971
 quota_sync_all fs/quota/quota.c:69 [inline]
 __do_sys_quotactl fs/quota/quota.c:938 [inline]
 __se_sys_quotactl+0x2d3/0x660 fs/quota/quota.c:917
 __x64_sys_quotactl+0x55/0x60 fs/quota/quota.c:917
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x0000000000001d63 -> 0x0000000000001d6b

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 27308 Comm: syz-executor.1 Not tainted 6.7.0-rc4-syzkaller-00111-g5e3f5b81de80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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