------------[ cut here ]------------ WARNING: CPU: 0 PID: 45 at fs/iomap/iter.c:33 iomap_iter_done fs/iomap/iter.c:35 [inline] WARNING: CPU: 0 PID: 45 at fs/iomap/iter.c:33 iomap_iter+0xa08/0xee0 fs/iomap/iter.c:78 Modules linked in: CPU: 0 PID: 45 Comm: kworker/u4:2 Not tainted 5.18.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: loop0 loop_rootcg_workfn RIP: 0010:iomap_iter_done fs/iomap/iter.c:33 [inline] RIP: 0010:iomap_iter+0xa08/0xee0 fs/iomap/iter.c:78 Code: 48 89 44 24 08 48 89 14 24 e8 44 ec d5 ff 48 8b 44 24 08 48 8b 14 24 e9 cb fb ff ff 0f 0b e9 ac fa ff ff 0f 0b e9 0b fa ff ff <0f> 0b e9 d0 f9 ff ff 0f 0b e9 f1 f9 ff ff e8 65 56 b7 06 85 c0 0f RSP: 0018:ffffc90000d6f6c0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffffc90000d6f858 RCX: 000000000000000c RDX: 1ffff920001adf0c RSI: 1ffff920001adf12 RDI: ffffc90000d6f888 RBP: ffffc90000d6f890 R08: ffffc90000d6f638 R09: ffff88814c39c0c3 R10: ffffed1029873818 R11: 0000000000000005 R12: ffffc90000d6f880 R13: ffffc90000d6f8c8 R14: 00000fff80000000 R15: ffffffff80000000 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd33e93398 CR3: 000000001ab6c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __iomap_dio_rw+0x5dd/0x1750 fs/iomap/direct-io.c:590 iomap_dio_rw+0x5/0x20 fs/iomap/direct-io.c:681 ext4_dio_read_iter fs/ext4/file.c:79 [inline] ext4_file_read_iter+0x35d/0x4f0 fs/ext4/file.c:130 call_read_iter include/linux/fs.h:2044 [inline] lo_rw_aio.isra.0+0x854/0xd80 drivers/block/loop.c:453 do_req_filebacked drivers/block/loop.c:497 [inline] loop_handle_cmd drivers/block/loop.c:1870 [inline] loop_process_work+0x7d9/0x19c0 drivers/block/loop.c:1910 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 worker_thread+0x598/0xec0 kernel/workqueue.c:2436 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298