Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in iomap_iter ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11 at fs/iomap/iter.c:33 iomap_iter_done fs/iomap/iter.c:33 [inline] WARNING: CPU: 1 PID: 11 at fs/iomap/iter.c:33 iomap_iter+0xd8c/0x1100 fs/iomap/iter.c:78 Modules linked in: CPU: 1 PID: 11 Comm: kworker/u4:1 Not tainted 6.0.0-rc1-syzkaller-00067-g573ae4f13f63-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: loop3 loop_workfn RIP: 0010:iomap_iter_done fs/iomap/iter.c:33 [inline] RIP: 0010:iomap_iter+0xd8c/0x1100 fs/iomap/iter.c:78 Code: ff e8 28 60 87 ff 0f 0b e9 f1 f9 ff ff e8 1c 60 87 ff 0f 0b e9 86 f7 ff ff e8 10 60 87 ff 0f 0b e9 5e f7 ff ff e8 04 60 87 ff <0f> 0b e9 1a f7 ff ff e8 f8 5f 87 ff e8 73 b4 8a 07 31 ff 89 c5 89 RSP: 0018:ffffc90000107668 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc90000107800 RCX: 0000000000000000 RDX: ffff888011a9bb00 RSI: ffffffff81f4ab4c RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000 R10: d70e000000000000 R11: 0000000000000004 R12: 0000000000000000 R13: d70e000000000000 R14: ffffc90000107828 R15: ffffc90000107870 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fae015980a0 CR3: 000000007f2cd000 CR4: 0000000000350ee0 Call Trace: <TASK> __iomap_dio_rw+0x6c6/0x1c20 fs/iomap/direct-io.c:601 iomap_dio_rw+0x3c/0xa0 fs/iomap/direct-io.c:690 ext4_dio_read_iter fs/ext4/file.c:79 [inline] ext4_file_read_iter+0x434/0x600 fs/ext4/file.c:130 call_read_iter include/linux/fs.h:2181 [inline] lo_rw_aio.isra.0+0xa54/0xc50 drivers/block/loop.c:454 do_req_filebacked drivers/block/loop.c:498 [inline] loop_handle_cmd drivers/block/loop.c:1859 [inline] loop_process_work+0x969/0x2050 drivers/block/loop.c:1894 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> Tested on: commit: 573ae4f1 tee: add overflow check in register_shm_helpe.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master console output: https://syzkaller.appspot.com/x/log.txt?x=11c4af0d080000 kernel config: https://syzkaller.appspot.com/x/.config?x=d9d854f607a68b32 dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=13ba8e5b080000
