------------[ cut here ]------------
d_inode(dentry) != file_inode(file)
WARNING: ./include/linux/fs.h:1363 at file_dentry include/linux/fs.h:1363 [inline], CPU#0: kworker/u8:17/1455
WARNING: ./include/linux/fs.h:1363 at file_remove_privs_flags+0x556/0x610 fs/inode.c:2378, CPU#0: kworker/u8:17/1455
Modules linked in:
CPU: 0 UID: 0 PID: 1455 Comm: kworker/u8:17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: loop0 loop_workfn
RIP: 0010:file_dentry include/linux/fs.h:1363 [inline]
RIP: 0010:file_remove_privs_flags+0x556/0x610 fs/inode.c:2378
Code: 00 75 4d 44 89 e8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 95 1d 80 ff e9 a5 fe ff ff e8 8b 1d 80 ff 90 <0f> 0b 90 e9 b0 fb ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c d9
RSP: 0018:ffffc900062974a0 EFLAGS: 00010293
RAX: ffffffff82451b45 RBX: ffff888041f9eca0 RCX: ffff888029b95d00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900062975f8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f5ee5f R12: 0000000000000000
R13: 1ffff110083f3d94 R14: 1ffff11007d0e98e R15: 1ffff92000c52ea0
FS:  0000000000000000(0000) GS:ffff888125c4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f27d71456b8 CR3: 000000006033e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 shmem_file_write_iter+0xaa/0x120 mm/shmem.c:3408
 lo_rw_aio+0xc78/0xf30 include/linux/percpu-rwsem.h:-1
 do_req_filebacked drivers/block/loop.c:429 [inline]
 loop_handle_cmd drivers/block/loop.c:1921 [inline]
 loop_process_work+0x638/0x11d0 drivers/block/loop.c:1956
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>