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BUG: KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty

write to 0xffff88814d32b8e8 of 8 bytes by task 16754 on cpu 0:
 __mark_inode_dirty+0x250/0x7d0 fs/fs-writeback.c:2483
 generic_update_time fs/inode.c:1941 [inline]
 inode_update_time fs/inode.c:1954 [inline]
 __file_update_time fs/inode.c:2142 [inline]
 file_update_time+0x122/0x140 fs/inode.c:2172
 shmem_file_write_iter+0x9f/0xe0 mm/shmem.c:2875
 do_iter_write+0x4ad/0x770 fs/read_write.c:860
 vfs_iter_write+0x56/0x70 fs/read_write.c:901
 lo_write_bvec drivers/block/loop.c:249 [inline]
 lo_write_simple drivers/block/loop.c:271 [inline]
 do_req_filebacked drivers/block/loop.c:495 [inline]
 loop_handle_cmd drivers/block/loop.c:1915 [inline]
 loop_process_work+0xd85/0x12e0 drivers/block/loop.c:1950
 loop_workfn+0x31/0x40 drivers/block/loop.c:1974
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2703
 worker_thread+0x525/0x730 kernel/workqueue.c:2784
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

read to 0xffff88814d32b8e8 of 8 bytes by task 16753 on cpu 1:
 __mark_inode_dirty+0x199/0x7d0 fs/fs-writeback.c:2474
 generic_update_time fs/inode.c:1941 [inline]
 inode_update_time fs/inode.c:1954 [inline]
 touch_atime+0x1be/0x2d0 fs/inode.c:2026
 file_accessed include/linux/fs.h:2360 [inline]
 shmem_file_read_iter+0x4b3/0x550 mm/shmem.c:2858
 do_iter_read+0x4af/0x780 fs/read_write.c:795
 vfs_iter_read+0x56/0x70 fs/read_write.c:837
 lo_read_simple drivers/block/loop.c:290 [inline]
 do_req_filebacked drivers/block/loop.c:500 [inline]
 loop_handle_cmd drivers/block/loop.c:1915 [inline]
 loop_process_work+0x98c/0x12e0 drivers/block/loop.c:1950
 loop_rootcg_workfn+0x22/0x30 drivers/block/loop.c:1981
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2703
 worker_thread+0x525/0x730 kernel/workqueue.c:2784
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

value changed: 0x0000000000000000 -> 0x0000000000000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16753 Comm: kworker/u4:11 Not tainted 6.6.0-syzkaller-14142-g90b0c2b2edd1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: loop4 loop_rootcg_workfn
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