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BUG: KCSAN: data-race in __mark_inode_dirty / redirty_tail_locked

read-write to 0xffff88810a37aca0 of 8 bytes by task 45 on cpu 0:
 redirty_tail_locked+0x56/0x270 fs/fs-writeback.c:1302
 requeue_inode fs/fs-writeback.c:1558 [inline]
 writeback_sb_inodes+0x7b6/0xaa0 fs/fs-writeback.c:1920
 wb_writeback+0x23b/0x6c0 fs/fs-writeback.c:2065
 wb_do_writeback fs/fs-writeback.c:2208 [inline]
 wb_workfn+0x1a8/0x8d0 fs/fs-writeback.c:2248
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2390
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2537
 kthread+0x1a6/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read to 0xffff88810a37aca0 of 8 bytes by task 6353 on cpu 1:
 __mark_inode_dirty+0x58/0x7d0 fs/fs-writeback.c:2403
 mark_inode_dirty include/linux/fs.h:2127 [inline]
 generic_write_end+0x18e/0x360 fs/buffer.c:2227
 ext4_da_write_end+0x4bd/0x630 fs/ext4/inode.c:3174
 generic_perform_write+0x253/0x3d0 mm/filemap.c:3937
 ext4_buffered_write_iter+0x234/0x3e0 fs/ext4/file.c:289
 ext4_file_write_iter+0xd7/0x10e0
 do_iter_write+0x418/0x700 fs/read_write.c:861
 vfs_iter_write+0x50/0x70 fs/read_write.c:902
 iter_file_splice_write+0x456/0x7d0 fs/splice.c:778
 do_splice_from fs/splice.c:856 [inline]
 direct_splice_actor+0x84/0xa0 fs/splice.c:1022
 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:977
 do_splice_direct+0x104/0x180 fs/splice.c:1065
 do_sendfile+0x3b8/0x950 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1309
 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: 0x0000000000020084 -> 0x0000000000000004

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 6353 Comm: syz-executor.3 Not tainted 6.3.0-rc6-syzkaller-00034-ge62252bc55b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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