------------[ cut here ]------------
WARNING: CPU: 1 PID: 7013 at fs/ext4/inode.c:3725 ext4_iomap_begin+0x16b4/0x18f0 fs/ext4/inode.c:3725
Modules linked in:
CPU: 1 UID: 0 PID: 7013 Comm: syz.5.103 Not tainted 6.16.0-rc6-syzkaller-00002-g155a3c003e55 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ext4_iomap_begin+0x16b4/0x18f0 fs/ext4/inode.c:3725
Code: db 44 0f 45 fb e9 22 ec ff ff e8 97 e9 4e ff 41 bf e4 ff ff ff e9 12 ec ff ff e8 87 e9 4e ff e9 08 ec ff ff e8 7d e9 4e ff 90 <0f> 0b 90 41 bf de ff ff ff 49 be 00 00 00 00 00 fc ff df e9 ed ef
RSP: 0000:ffffc9000b387080 EFLAGS: 00010293
RAX: ffffffff827148d3 RBX: ffff8880581ecfda RCX: ffff88802575da00
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc9000b387218 R08: ffff8880581eccd7 R09: 1ffff1100b03d99a
R10: dffffc0000000000 R11: ffffed100b03d99b R12: ffff8880581ecf18
R13: 1ffff1100b03d9fb R14: 0000000000000000 R15: 00000000000000d4
FS:  00007fa72b3e16c0(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd620860a40 CR3: 000000007b3ac000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 iomap_iter+0x537/0xdf0 fs/iomap/iter.c:109
 __iomap_dio_rw+0xc67/0x1e40 fs/iomap/direct-io.c:733
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:823
 ext4_dio_write_iter fs/ext4/file.c:580 [inline]
 ext4_file_write_iter+0x16a2/0x1bc0 fs/ext4/file.c:721
 iter_file_splice_write+0x937/0x1000 fs/splice.c:738
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1158
 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1227
 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa72a58e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa72b3e1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa72a7b5fa0 RCX: 00007fa72a58e929
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007fa72a610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe86 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa72a7b5fa0 R15: 00007ffc4483fa08
 </TASK>