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BUG: KCSAN: data-race in __mark_inode_dirty / redirty_tail_locked

read-write to 0xffff888109dd2380 of 8 bytes by task 5059 on cpu 1:
 redirty_tail_locked+0x56/0x270 fs/fs-writeback.c:1305
 requeue_inode fs/fs-writeback.c:1561 [inline]
 writeback_sb_inodes+0x7b2/0xaa0 fs/fs-writeback.c:1923
 __writeback_inodes_wb+0x9a/0x1a0 fs/fs-writeback.c:1965
 wb_writeback+0x24d/0x6c0 fs/fs-writeback.c:2070
 wb_check_background_flush fs/fs-writeback.c:2136 [inline]
 wb_do_writeback fs/fs-writeback.c:2224 [inline]
 wb_workfn+0x67f/0x8d0 fs/fs-writeback.c:2251
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2405
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2552
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read to 0xffff888109dd2380 of 8 bytes by task 5087 on cpu 0:
 __mark_inode_dirty+0x199/0x7d0 fs/fs-writeback.c:2446
 mark_buffer_dirty+0x165/0x240 fs/buffer.c:1158
 __block_commit_write+0x10a/0x1a0 fs/buffer.c:2138
 block_write_end fs/buffer.c:2217 [inline]
 generic_write_end+0x7f/0x360 fs/buffer.c:2231
 ext4_da_write_end+0x4bd/0x630 fs/ext4/inode.c:3007
 generic_perform_write+0x253/0x3d0 mm/filemap.c:3934
 ext4_buffered_write_iter+0x234/0x3e0 fs/ext4/file.c:289
 ext4_file_write_iter+0xd7/0x10e0
 call_write_iter include/linux/fs.h:1868 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x463/0x760 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 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: 0 PID: 5087 Comm: syz-executor.5 Not tainted 6.3.0-syzkaller-11301-g1ae78a14516b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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